I'm an audio engineer specializing in live sound and touring I just watched your video here sound reinforcement training video because I had to describe to a producer and director how direct boxes work and why we need a better budget in one of these touring productions we're into in order to procure the correct boxes your video was so on Target and helpful I could leave them sitting in front of the video and go and get coffee and a cigarette and come back and have a check in my hand because they finally understand what the hell we're talking about
WOW. A professor grade lecture! Clear. Concise. No nonsense whatsoever: every word is solid information. Contains all the information one EVER needs. The best video on TH-cam on this matter.
+jhon travolta You're welcome, thanks for watching! If you would like to support the channel please consider signing up to become a patron at www.patreon.com/glbproductions?ty=h Every little bit helps!
I fully agree with your explanations about the character of the different options within the scope of DI Boxes. Any musician who follows attentively your words will achieve positive results. I don't just agree with the issue of using adapters XLR-to-JACK due to the fact that it is important for the mixer that the Each input (in Jack format) are preserved in their electromechanical integrity.
The use of adapters increases the possibility of damage in the Jack’s contacts in the event of a sudden unexpected movement in the respective cable, since the total height of the set exceeds what is reasonable for a female panel Jack plug. And, as you know, they are fragile when asking for lateral movements, whether intentional or not. Personally, for a long time I banned the use of direct adapters from my systems and for each situation I have short cables, made by me. That is, I have adapter cables with the same format, usually with 50 cm of cable. It seems safer for use in mixers and any Jack input, particularly if it is installed on vertical panels. Congratulations for your YT channel. Macedo Pinto Portugal
@@GLBProductions Yes, the best i can. I am responsible for maintaining all the equipment. To this day, I have never had to take anything to the factory, nor any workshop. Since 2001, I have my Dynacord XA and other equipment working well, perhaps because I keep everything in good condition myself. It doesn't pass through anyone's hands, except mine. Anyone who is lucky enough to get along with audio electronics is what they should do, I'm sure. Good luck to you and keep up the good work!
Bruno is a legend! I have watched everything this man makes! Just a wealth of audio/video info! I have probably watched this video, more than 50 times!Thank you sir! Well done! 🇨🇦👍🏻
The sound differences (If there were any) are probably due to the fact that the signal has passed through the amp that you have hopefully selected because you like its sonic profile so that's not really a solid disadvantage. When I did sound in a youth center we usually used a DI for the bass and acoustic guitars but mic forelectric guitar because the cab sound is often more crucial to guitarists. Acoustic guitars migh have also gone directly into the multi box on the floor if they had a sufficiently hot signal. To me the the biggest obstacle to good acoustic sound is the piezo pickup though, it often takes alot of work to make them not sound nasal and excessively percussive. My favourite way of setting up acoustics was a pair of sm94's (positioned at the neck and soundhole) blended with the plugged in sound. That method only works if the intrumentalist is sitting down though.
love these vids- concise, engaging, informative, and clear...been plugging into high end boxes for years not completely understanding what the boxes were doing...
Hi Bruno! I've been watching a couple of your vids, and I must comment on your vocal presentation which I find exellent. I can clearly hear every word, and your tempo is right on. Good job :-)
Lazy Avenue Yes, the block diagram can tell you many interesting things about your particular amp, especially the position and routing of the various inputs and outputs. A great thing to look at before buying a new amp!
Thank you sir Your Clear & Precise Explanation made Me understand more about Audio System World where words varies one to the other even among to Expertise I am New to Electric Guitar World, and there especially for DI or Direct Input, there are so much confusion and wrong rumors of this i could not even get close to the concept Thanks again there are not many people like you who knows Exact knowledge that can explain to the other
I just want to know if is it necessary to use DI box between the amp and the electric guitar where most of the guitarists use effects pedals.. How to connect? Because i always place a microphone in front of the amp to get a signal to a mixer.. If you can do a video or just a diagram on this it would be much appreciated.. By the way thanks for this wonderful information 👍👍
DI'ing electric guitar can be quite controversial - I recently posted an article by Peter Janis about this topic on my Facebook page, you can check it out. If using a regular DI you can connect in between the pedal board and the amplifier, or to the amp's line out (NOT speaker out) connector if available. However this will not capture the entire signal chain like a mic does.
Just watched all 3 videos. I have learned a lot, this afternoon. Thank you very much for making these videos and for sharing them. Much appreciated! Regards! Frits (The Netherlands)
LHSTRATUSA60 That's great, thank you very much for letting me know :) Feel free to get in touch on TH-cam or Facebook if you have every have questions about live sound, I'll do my best to answer them.
In most mixers (including the Mackie), the line input goes through an attenuator to the microphone input! (So you don't bypass the microphone amplifier.) Only the more professional mixers use separate circuitry for microphone and line inputs.
Yes you can do that, although there is no real gain to have two DIs in a row. It may be better to find an unbalanced output from the amp (sometimes called a line out) and run that into the DI box instead.
Thanks! Question about the TRS adapter thing: does a line input always have TRS connectors/wiring as well, so the symmetrical, "humbucking" signal is transformed back to normal in the desk?
Hello! this is good video. lml I have a one question, I have a Fractal AX8(professional guitar effector), and Mackie 1402 vlz pro. and my Fractal has Balanced Line level Output(+4dBu) (XLR) When I connected to the mixer's MIC input, and I set to Gain knob at 10 o'clock ( according to Level Set Mode) In this case, is it more appropriate to connect to the mixer's MIC input? Or do I need to connect the Line input of the mixer from Fractal to XLR to TRS?
The 'correct' method in this case would be to connect to the LINE input using an XLR to TRS adapter. However if you are getting a good sound with no distortion then there is no need to change your current set up 😊
GLB Productions I find the answer! Looking at the diagram, and if the Line input bypass the mic-preamp(Like a professional audio system), it should be connected to the line input(XLR to TRS) and if the MIc input and Line input pass through the mic-preamp(like a our Mackie mixer), there is no problem unless clip. Right? :)
I notice your amp line outs were XLR. Some of the amps I’ve used or looked at are instrument jack(TRS). Does this change the way you connect to a mixing desk? I also noticed that you didn’t use the channels that had no XLR inputs that I’ve come to understand are designated for instrument inputs. Why was this?
If the line out from the amplifier is unbalanced quarter-inch (check the manual to be sure) then you would need to connect the output to a DI box, and then the mixer itself. However if the mixer is relatively close to the amp then it may work to just run a standard guitar cable into the mixer's line level input. In the video I used the XLR input simply because the amplifiers had XLR direct outputs.
Absolutely fantastic series of lectures - I'd have saved years of experimentally finding some of these things out the hard way if I'd have come across these earlier! One question: if the +48V phantom power may damage the guitar amp, how do you cope in situations where there is only one button on the mixer for phantom power (i.e. phantom power supplied either to every channel or none)? Such as, where one instrument uses a phantom-powered DI box, and another uses the guitar amp DI out? Thanks again :)
Glad the videos have been helpful! The first thing is to determine whether your amp DI is vulnerable to phantom power - the vast majority are NOT. Write directly to the manufacturer and find out - they will be able to tell you definitively for your model. If your amp is one of those that can be damaged, use the adapter shown in the video to connect to the mixer's LINE input - this will bypass the phantom power and keep your amp safe.
I have all 80’s rack gear there is no FX loop on my Amp nor my preamp I’m trying to figure how to get all this to work I purchased a Di box in hopes to get everything going it’s works but very low sound and it’s a 159 watt amp any suggestions
Your teaching is wonderfully clear. I'm one of those self trained live sound engineers with an MG series yamaha mixer - and yes, I have had seriously hot signals and, until now, I've been baffled by them. I have a question that I hope you can answer- my bass player uses a Hartke active speaker and I have been using the amps built in 'line out' to grab his signal: My stage box has only mic inputs and so I'm unable (due to the distance of the my mixing board to the stage) to access the 'line in' inputs on the board. Until now I have been using the 'pad' feature on the desk to tame his signal - what woud you recommend in this instance?
If the input pad reduces the signal sufficiently then just keep using that :) An alternative would be to use a separate DI box for the bass, which you can then pad as necessary.
Great information thank you! If an amplifier has an external speaker out output does this do the same function or is it to go straight to another speaker? (or does it cut out the sound coming from the amp speaker also?)
No it's intended to go to another speaker - different function :) Whether or not it cuts off the internal speaker depends on the design of the specific amplifier.
@ Robert, If you want to take a line level signal and change it into a instrument level, then get a re-amp module. Radial makes one for $200 - $300. However, it is the wrong way to go about it, if you just want to amplify and EQ a mic. It's not going to sound that great, because the guitar preamp will most like not be clean and the speakers will induce an overdriven sound. I suggest using the preamp and EQ thats built into your mixer and take the mixers line out and sent it to an amplifier that takes in line level only like the ones in a PA amp. You will get more bang for your buck. If you just want to EQ your guitar then get an EQ stomp box and place it in-between your guitar and amp.
Another great video Bruno. Thx, and God bless you. My Q is, can I use an XLR to 1/2 TRS cable from a DI box's out to a line level input of my sub compact mixer to preserve mic channels for mics alone, thus maximizing the mixer's overall inputs. I don't want to lug around another mixer to sub mix to the main. Thx in advance for any inputs on this matter. Happy, and safe New Year everyone.
Happy New Year to you too 😄 Yes you can do that no problem - just be aware that the output level from DI boxes is generally around microphone level, and as such there may not be sufficient gain available if you connect to a LINE level input on your mixer. Try your specific setup and see if it works out. All the best for 2023!
the output from your mixer is going directly into your video camera but how would the sound change if you ran the mixer output to some decent pa speakers, a little different i'm guessing yes, of course depending on the quality of those pa speakers too but is there any sound still coming out of your amp as it's going to mixer via the external DI output ? I'm due to get my acoustic amp in the next day or two so i'm getting ready to try and hook it up to my small pa, Thank you for this video it's so helpful, Peace !
You would need to experiment - typically in a situation such as this the sound coming from the amp is used by the musician to monitor their sound on stage and the sound from the PA speakers is directed at the audience.
Hello GLB productions. I have been watching your tutorial videos regarding DI's and how to use it properly. There's just one detail in your video thats a little bit not clear on me regarding what to use a passive or active external DI when using the built in DI of an amplifier( in my case I will be using a multiple effects guitar pedal-zoom g5 DI out). The problem is the DI out of the said multiple effects pedal seems to overload the pre-amp of my mixer -behringer xenyx 802. For now I am following your suggestion of using an xlr to trs adaptor but I would also like to try using an external DI, so what should I purchase, a passive or an active one? I was thinking its a passive one. Btw, your video tutorials are really professional and not daunting to watch, keep it up! Please also make a video on how to match input and output impedances and how to read input output specs of various equipment such as headphones, amplifier, multiple effects, mixers. There's alot of videos for this topic but I believe that you can explain it better and simpler and more accurate. Thanks alot!
- Hi Marc thanks for getting in touch. The Zoom G5 is an active device so if you choose the go the external DI route you should choose a passive model. Thanks for the excellent video suggestions, I will add them to the list :)
It depends on the amplifier - consult the user manual to be sure. On some amps the headphone output doubles as a line out or direct output, other amps have both a line out as well as a mic-level direct out.
Thanks Bruno! I've learned a lot from your videos tonight. One thing that I'm still unsure about...I am a drummer and have also become the 'unofficial' Sound Engineer for our band, (which I'm actually really enjoying!) The guitarists in our band are constantly trying to ensure that they reproduce the best tone for our audiences. They both play electric guitars with no pre-amps or active pick- ups, they both use effects pedals and neither has a DI output built into their amp. The gigs we are doing are fairly small so at the moment we are able to manage by cranking their amps up. I would like to use DI boxes to run them through the mixer so that we can turn their amps down and reduce stage noise. Would I need active or passive DI's and would the front of house sound represent what the guitarists have painstakingly created, (i.e. including all EQ / effects etc.)? Thanks in advance and I hope you can help. :-)
Dan Thorpe Hi Dan, thanks for getting in touch. The industry standard method for capturing electric guitar for many years was to put a Shure SM57 in front of the amp - this approach may still work for you, and will capture the most realistic sound. The alternative is to use a passive DI at the end of their pedal chain ie between the last pedal and the amp. However, if they use any of the amp effects those will be lost so you need to be careful with this approach. There are also some DIs like the Radial JDX that are designed to be run in parallel with the speaker and which do a very good job indeed, but are not cheap. So have a word with your guitarists and then get back to me :)
Really needed this, Bravo! Question, what do you do if you want to mix your tone on a mixer then send out to the amp? In other words plugging in your mic and guitar into the mixer and go out to the amp, would you need a D.I. box to change the signal on the amp to line level?
- Thanks for watching! In this type of situation the simplest solution is to use an amplifier which has two channels, eg a mic channel and an instrument channel. Alternatively, if you are using a small external mixer, you should be able to plug the output of the mixer directly into the amp's instrument channel - experiment with levels and ensure there is no distortion.
- Hi San, thanks for the question. External mic preamps are generally not necessary for live sound - big touring acts may use one for the lead vocal but that's about it.
Also if you direct out a combo amplifier, i am guessing you cannot use it as a stage monitor because it will bypass the built in speaker and instead the sound will come out into the mixer directly to the PA speakers?
Hi I have a Roland Cube EX which serve as a PA system for my mic and electric guitar, can I still use the amp as it is with my mic and just make a one signal line to a passive DI? Would it affect my mic sound?
Why did you use the active DI when using using with the Hartke amp? The output is an active signal so isn't the general rule is to use the passive DI? Thanks
The mixer (not mixture) settings have no effect on the sound of the amplifier: the signal chain is guitar -> DI -> mixer or guitar -> amp -> mixer. The idea is that the player controls their own sound on stage, you the sound engineer control the sound that the audience hears.
Hey hello, very useful video, but I soon encountered this problem, I want to ask, when at 3:40 min connect the XLR cable this way, can we cause damage to the apm when we do not have a sound box connected to the amplifier itself? Because I use a Tube head "Laney GH100R". Thanks in advance!
In general, tube amplifiers should always be run connected to a load - either a speaker cabinet, load box or something similar. There are some exceptions to this, but check with Laney on your specific model to be sure.
Can I use a di box to connect the sub out of my Tascam model 12 to a Mackie Thump 12a. Reason being that there is a lot of noise and distortion at line level.
Before you do that try turning the input level control down to under 12 o'clock on the mackie - you need to figure out where the distortion is coming from.
+Danilo de Nadai Sícari You can if the distance between the guitar and mixer is less than five meters AND the mixer has a high impedance or instrument input.
Shouldn't there not be a frequency spectrum issue from connecting the DI out from the amplifier into the instrument input of the mixer as you did with the XLR-to-jack connector? I imagined that the low-to-high impedance mismatch from a DI output into the instrument input of the mixer would be similar to a high-to-low impedance mismatch of an instrument signal being input directly into the microphone inputs of a mixer. Could you clarify this? Thank you for this video series.
That's a great question! First of all, just to clarify: the XLR to 1/4" adapter is plugged into the mixer's LINE input - this particular mixer does not actually have a true high impedance (Hi-Z) instrument input. Secondly, when it comes to matching impedance, the rule is that the load (destination) impedance should be at least ten times the source impedance, so going from low to high is always ok - problems only arise when going from high to low, hence the need for DI boxes. In this specific case the amp direct out runs at line level so is an ideal match for the line level input on the mixer.
First of all check to see if the line out is balanced or unbalanced. If balanced it can be run directly into your mixing console using a TRS to TRS cable, or a TRS to XLR male cable if running through an XLR snake. If unbalanced, run the line out into a DI box and from there to the mixer.
The tape output is a copy of the main mix on unbalanced RCA connectors, designed to connect to a tape recorder. On other mixers it's labelled 'REC OUT' or something similar.
@@GLBProductions when you're showing the comparison between the Vox DI and the RADIAL DI. I understand that when you're using the Vox DI the tone is coming from the Vox, but when you're using the Radial DI are you also plugged into the amp in some way or just straight into the sound board with no amp involved at all
Ah yes that part - in the video I am not plugged into the amp because I am just demonstrating the difference between the two DIs. However during a gig you would run another cable from the thru connector on the DI into the amp so that you can hear yourself.
Is it possible to connect a mixer to a guitar amp for the purpose of increasing inputs? I have an AER Accousticube 3. It has Mic, Line & Instrument inputs selectable on its 2 channels. I'm thinking that connecting a line output from the mixer into a channel selected as line input should work ok?
Ah ok - I misunderstood your question: you are actually going mixer -> guitar amp and not the other way around. This can work too, provided the amp has a true line level input: on some amps the quarter-inch input can accept instrument but not line levels, which leads to distortion. Glad it's working out for you :)
@@GLBProductionsYes. I’m going to be leading worship on a midweek meeting but wanted another singer or two and my AER only has 1x mic input. 20 channels on the L20 is over kill but better to have more not less 😊Yes Acousticube 3 has a piezo, line & mic options on each of the 2x channels even though only 1x mic port is available. Both channels are identical in EQ and input selections whereas my previous Acousticube IIa had dedicated instrument channel 1 and dedicated mic channel 2.
Yes I have this challenge as well with my acoustic amps - the way I get around it is by using a small Mackie mixer whose XLR outputs can be switched to mic level - this allows me to use the mic input on the amp for all the mics, and use the guitar input for my guitar. All the best for your meeting, may the Lord Bless your praise and worship 😄
I'm having a serious problem with my new amplifier. I just bought a Blackstar ID260 2X12 combo amplifier and in the front it has a mini usb that runs right to my computer for recording in Reaper software. I'm not happy with its sound of recording. So I wanted to use a better method to record with this amp. 1 choice is micing the amp, and the other would be to use the output on the back on my amp. But there lies the problem. The output on this amp is also part of the effects loop I use for my pedals. How do I get around this to where I can record directly to my PC without having to give up my pedals in the effects loop? Is there a way?
If the mixer has a line level input, could you plug an active instrument straight into the mixer without a DI (assuming it’s a short cable)? Or would you lose audio quality doing that?
Hey m@n do you think i would benefit from a DI box such as the Radial JDI to process the sound of a guitar Tube Preamp (ENGL E530) which i run for now on a Mackie VLZ4 mixer (such as yours) in order to blend the two signals of the regular Line Out & the Mike-Up EQ compensated Out (with a L/R panning) of this preamp N then passed it thru a tube power amp of the same brand ENGL .....IMO i have a pretty good sound right now by using this setup utilizing the 2 Stereo Inputs of the VLZ4802 mixer ....it enables me to process this blended signal to the ALT out (Sub-Mix) going into a ART Pro VLA Dual channel Komp (really good with upgraded tubes!) in order to bring it back to the Stereo Return on the Mackie mixer (therefore the Main-Mix) N record by routing this to my A/I a really Phat Take of my Tube Preamp going thru as well into a 100% Analog Cab-Sim Palmer PGA05 ...N all this in 4CM into my Boss Gt100 multiFX processor !!!!
No, I don't think so - DI boxes like the Radial JDI are not designed as tone modifiers. You might get a tiny increase in warmth due to the transformer but it really would not be worth the money spent, especially as you already have a tube power amp in the signal chain.
@@GLBProductions Ok many thanks 4 the reply ^^ im thinking about this coz im not sure about the Impedance matching in between the Outputs of my Preamp & the Stereo Inputs of the VLZ4 mixer ...what do you think about that ? ive read in the manual they R greater than 17K but ive no idea of the E530 Output Impedance... that's why i was thinking about a DI box (in stereo) but ive read on a forum that the E530 have buffered line outputs with OPamps, so no need for a DI
Email them and ask! Describe your signal chain and ask if they foresee any impedance issues. Any reputable manufacturer will be more than happy to answer this type of customer question :)
@@GLBProductions yeah ive already done that !!! they don't know the real Impedance but anyway i think it is a good setting coz the Output Imp. of the preamp should be much more lower than the Stereo Input Imp. of the Mackie mixer ...actually it sounds good !!!! Thanks again 4 your help
Sounds like you got fobbed off man - any technician worth his multimeter would be able to look that up in an minute. Very disappointing! But yes - preamp line output to mixer line output would almost never be an issue. All the best with your music 😊
hi Bruno ..Myself Ankush .I am asking a question . I am a professional bassist. My instrument is Ibernez SR305 and i will connect it with Bass Pedal Zoom B1. so which DI is need for play in live stages Active or Passive and why?
Mike Odie Simply put, the polarity switch puts the top of your guitar 180 degrees out of phase with the sound coming from the PA system - resonant frequencies thus tend to cancel one another out rather than building up and turning into feedback. This does not always work and it depends on where exactly you are standing relative to the monitor speakers/PA system but it's a useful tool to have.
Mike Odie With acoustic instruments, sound is produced by the strings vibrating the top of the instrument, the soundboard. Sometimes, the soundboard itself can pick up vibrations from the PA system or monitors - this makes the instrument behave in a way that is very similar to a microphone, and is the reason why some acoustic instruments feed back even when using pickup systems. By flipping the polarity switch, you put the vibrations coming from the top of the guitar (when you play it) 180 degrees out of phase with the sound coming from the PA system - this has a tendency to cancel out the resonances that cause feedback. Hope this helps.
yes it does thanks....i am covering induction motors in my class right now and i often refer to speakers and musical instruments as a way to add interest and analogy. we deal with sine waves, magnitude, polarity, induces voltages and all the same theory that is involved in acoustics and sound reinforcement . i am a sound enthusiast and engineer myself and will be honest i never pursued the polarity switch. every time i tried it nothing improved...anyway i've tuned in to your videos and you do a fantastic job at presenting information about your trade. it's informative for beginners and experienced sound techs...thanks and keep up the great work ! and check out my channel for some all original all live and all local music from nova scotia canada...i'm recording with a zoom h4n and video is shot with a canon t3i in full 1080p hd....cheers
Mike Odie Glad to hear that. Using the polarity switch is rather hit and miss because its effectiveness depends on the frequencies that are feeding back as well as your position relative to the main and monitor speakers. There will generally be one position (either normal or reverse polarity) that produces the best results and that's the one you should use. Yes you have lots of interesting content, I had a look at your channel :)
Hi Bruno...a question. If you use a wireless receiver/sender, and plug the receiver into a 1/4 inch channel on the mixer, and plug the sender into your instrument, does that setup negate the need for a D.I Box?
Pretty much - you've reduced the length of the cable run to the distance from the receiver to the mixer. Of course, wireless systems can have other problems that create noise...
I'm an audio engineer specializing in live sound and touring I just watched your video here sound reinforcement training video because I had to describe to a producer and director how direct boxes work and why we need a better budget in one of these touring productions we're into in order to procure the correct boxes your video was so on Target and helpful I could leave them sitting in front of the video and go and get coffee and a cigarette and come back and have a check in my hand because they finally understand what the hell we're talking about
That's awesome Greg, glad you got the money to upgrade your rig 😊
WOW. A professor grade lecture! Clear. Concise. No nonsense whatsoever: every word is solid information. Contains all the information one EVER needs. The best video on TH-cam on this matter.
Very glad the video was helpful!
After 7 years of working with DIs your videos still give me some useful information, thanks!
That's great Michal, thanks for watching!
Your english is very clear , I could understand what you say precisely in this video . Thanks for sharing sir !
+jhon travolta You're welcome, thanks for watching! If you would like to support the channel please consider signing up to become a patron at www.patreon.com/glbproductions?ty=h Every little bit helps!
I fully agree with your explanations about the character of the different options within the scope of DI Boxes.
Any musician who follows attentively your words will achieve positive results.
I don't just agree with the issue of using adapters
XLR-to-JACK due to the fact that it is important for the mixer that the
Each input (in Jack format) are preserved in their electromechanical integrity.
Iv'e become hooked on Brunos engineering tutorials. I'm looking forward to part 4 next. I will need to buy popcorn for the whole series I thing, lol
The use of adapters increases the possibility of damage in the Jack’s contacts in the event of a sudden unexpected movement in the respective cable, since the total height of the set exceeds what is reasonable for a female panel Jack plug. And, as you know, they are fragile when asking for lateral movements, whether intentional or not.
Personally, for a long time I banned the use of direct adapters from my systems and for each situation I have short cables, made by me. That is, I have adapter cables with the same format, usually with 50 cm of cable. It seems safer for use in mixers and any Jack input, particularly if it is installed on vertical panels.
Congratulations for your YT channel.
Macedo Pinto
Portugal
Thanks for your input Macedo, sounds like your equipment was very well looked after 😊
@@GLBProductions Yes, the best i can.
I am responsible for maintaining all the equipment.
To this day, I have never had to take anything to the factory, nor any workshop.
Since 2001, I have my Dynacord XA and other equipment working well, perhaps because I keep everything in good condition myself. It doesn't pass through anyone's hands, except mine.
Anyone who is lucky enough to get along with audio electronics is what they should do, I'm sure.
Good luck to you and keep up the good work!
Bruno is a legend! I have watched everything this man makes! Just a wealth of audio/video info! I have probably watched this video, more than 50 times!Thank you sir! Well done! 🇨🇦👍🏻
Wow 50 times! Thank you so much Fred for the multiple views and encouraging words 😄 You have a great day sir!
I've seen three of your DI box explanation videos so far: they are very informative, well texted and technically very well done: Thank you teacher!
You're welcome, thanks for watching!
The part on signal chain and block diagram was enlightening. I did not realize my tubes were being bypassed. Thanks.
Very clear explanations, love to hear from you about setting up sound system in a church or in a big stage. Thanks and God bless.
Thanks Enrique, I teach those concepts in my face to face classes - too many variables trying to teach it via video.
Thank you for the perfect explanations on all your videos. I was such a novice. God bless you.
You're an amazing instructor and teacher. Just had to say that. Thanks for the great tips and info!
+rjmari You're welcome, thanks for watching!
These are really good videos - you're very knowledgeable!
Thanks for watching, Steve!
I always recommend using the correct cable instead of using any adapters if possible, to reduce potential weak links in the chain.
The sound differences (If there were any) are probably due to the fact that the signal has passed through the amp that you have hopefully selected because you like its sonic profile so that's not really a solid disadvantage. When I did sound in a youth center we usually used a DI for the bass and acoustic guitars but mic forelectric guitar because the cab sound is often more crucial to guitarists. Acoustic guitars migh have also gone directly into the multi box on the floor if they had a sufficiently hot signal. To me the the biggest obstacle to good acoustic sound is the piezo pickup though, it often takes alot of work to make them not sound nasal and excessively percussive. My favourite way of setting up acoustics was a pair of sm94's (positioned at the neck and soundhole) blended with the plugged in sound. That method only works if the intrumentalist is sitting down though.
Thanks for the input!
Bruno, many thanks for your very clear, instructive videos. Without these I would have been at a complete loss when working my sound systems.
You're most welcome Allan, glad the videos have been helpful :)
Also if your mixer has a pad button you use that to cut down the incoming signal if it is too hot and overloading.
+bluetech7753 Thanks for your contribution!
Also you could use attenuator
love these vids- concise, engaging, informative, and clear...been plugging into high end boxes for years not completely understanding what the boxes were doing...
That's great to hear Steve - so important to fully understand the reasons behind what we do!
This series is exceptionally well made--clear and well-coordinated video with the narration. Thank you.
- You're welcome Tom, thanks for watching!
Number three vid for me. I knew absolutely zip before watching these. Wowww. So clear and understandable. Thank you so much.
Part six is coming out soon, on mono vs stereo DI boxes :)
The sound from the JDI was much clearer. I'll have to try this with our guitar amps.
Yes always worth trying a different DI for comparison.
Hi Bruno! I've been watching a couple of your vids, and I must comment on your vocal presentation which I find exellent. I can clearly hear every word, and your tempo is right on. Good job :-)
- Thanks for watching! It could have something to do with the fact that I used to be a school teacher ;)
Thanks so much for the speedy reply 😮
You're welcome :)
Now, I am curious about my numerous amps.. I like to check block diagrams.. Thanks for great video.
Lazy Avenue Yes, the block diagram can tell you many interesting things about your particular amp, especially the position and routing of the various inputs and outputs. A great thing to look at before buying a new amp!
Thanks a lot for great tips!
Lazy Avenue You're welcome! Let me know if you have any other questions.
Thank you so much. These are invaluable vids for a novice like me. Clear, concise & thorough. Cheers!
You're most welcome.
Thank you sir Your Clear & Precise Explanation made Me understand more about
Audio System World where words varies one to the other even among to Expertise
I am New to Electric Guitar World, and there especially for DI or Direct Input,
there are so much confusion and wrong rumors of this i could not even get close to the concept
Thanks again there are not many people like you who knows Exact knowledge that can explain to the other
I just want to know if is it necessary to use DI box between the amp and the electric guitar where most of the guitarists use effects pedals.. How to connect? Because i always place a microphone in front of the amp to get a signal to a mixer.. If you can do a video or just a diagram on this it would be much appreciated.. By the way thanks for this wonderful information 👍👍
DI'ing electric guitar can be quite controversial - I recently posted an article by Peter Janis about this topic on my Facebook page, you can check it out. If using a regular DI you can connect in between the pedal board and the amplifier, or to the amp's line out (NOT speaker out) connector if available. However this will not capture the entire signal chain like a mic does.
Just watched all 3 videos. I have learned a lot, this afternoon. Thank you very much for making these videos and for sharing them. Much appreciated! Regards! Frits (The Netherlands)
LHSTRATUSA60 That's great, thank you very much for letting me know :) Feel free to get in touch on TH-cam or Facebook if you have every have questions about live sound, I'll do my best to answer them.
A late thank you for your DI boxes video series
You're welcome Nic!
Thanks for all your videos I appreciate all the information you've provided! 😎
You're welcome Adrian, thanks for watching :)
Thank you for the great information. I've really learned a lot! Very helpful!
Thank so much GLB Production for this video. It helps me a lot.
+tereso jr juarbal Very glad to hear that, thanks for watching!
In most mixers (including the Mackie), the line input goes through an attenuator to the microphone input!
(So you don't bypass the microphone amplifier.)
Only the more professional mixers use separate circuitry for microphone and line inputs.
Correct! However it is sometimes easier to explain it this way as it prevents people from trying to plug an unbalanced microphone into the line input.
Extremely helpful, easy to understand, and informative!
i have learn a lot from this. question though, i have a guitar amp thas has DI out, can i run the DI out into a passive DI box going to the mixer?
Yes you can do that, although there is no real gain to have two DIs in a row. It may be better to find an unbalanced output from the amp (sometimes called a line out) and run that into the DI box instead.
This video is just what I was looking for. Well done.
shaykemup Thanks for watching :)
DI definitely sounds cleaner to my ears
- Thanks for the response! Glad your findings agree with mine.
Great explanation. Very useful video.
Thanks for watching :)
Very good, solid information. I certainly learnt some useful things. Thank you.
You're welcome David, thanks for watching :)
Thanks! Question about the TRS adapter thing: does a line input always have TRS connectors/wiring as well, so the symmetrical, "humbucking" signal is transformed back to normal in the desk?
Usually but not always - some mixers have unbalanced line inputs which use a female TS connector.
Hello! this is good video. lml
I have a one question, I have a Fractal AX8(professional guitar effector), and Mackie 1402 vlz pro. and my Fractal has Balanced Line level Output(+4dBu) (XLR)
When I connected to the mixer's MIC input, and I set to Gain knob at 10 o'clock (
according to Level Set Mode)
In this case, is it more appropriate to connect to the mixer's MIC input?
Or do I need to connect the Line input of the mixer from Fractal to XLR to TRS?
The 'correct' method in this case would be to connect to the LINE input using an XLR to TRS adapter. However if you are getting a good sound with no distortion then there is no need to change your current set up 😊
@@GLBProductions Can the distortion of sound? (even if No clip in Level Set Mode)
It's possible but unlikely - always important to monitor your audio for any distortion.
GLB Productions I find the answer! Looking at the diagram, and if the Line input bypass the mic-preamp(Like a professional audio system), it should be connected to the line input(XLR to TRS) and if the MIc input and Line input pass through the mic-preamp(like a our Mackie mixer), there is no problem unless clip. Right? :)
Yes - pretty much. On the Mackie the mic and line inputs share the same circuit, it's just that the line input passes through a pad first.
Great tutorial as always! Thank you, Bruno! Your videos are priceless! Lots of regards!
You're very welcome Alex, thanks for watching!
Wow that was a new info for me thanks Bruno!
You're welcome Christopher.
I notice your amp line outs were XLR. Some of the amps I’ve used or looked at are instrument jack(TRS). Does this change the way you connect to a mixing desk? I also noticed that you didn’t use the channels that had no XLR inputs that I’ve come to understand are designated for instrument inputs. Why was this?
If the line out from the amplifier is unbalanced quarter-inch (check the manual to be sure) then you would need to connect the output to a DI box, and then the mixer itself. However if the mixer is relatively close to the amp then it may work to just run a standard guitar cable into the mixer's line level input.
In the video I used the XLR input simply because the amplifiers had XLR direct outputs.
Absolutely fantastic series of lectures - I'd have saved years of experimentally finding some of these things out the hard way if I'd have come across these earlier!
One question: if the +48V phantom power may damage the guitar amp, how do you cope in situations where there is only one button on the mixer for phantom power (i.e. phantom power supplied either to every channel or none)?
Such as, where one instrument uses a phantom-powered DI box, and another uses the guitar amp DI out?
Thanks again :)
Glad the videos have been helpful! The first thing is to determine whether your amp DI is vulnerable to phantom power - the vast majority are NOT. Write directly to the manufacturer and find out - they will be able to tell you definitively for your model. If your amp is one of those that can be damaged, use the adapter shown in the video to connect to the mixer's LINE input - this will bypass the phantom power and keep your amp safe.
@@GLBProductions thank you for the advice and the quick response. And for all your other videos :)
Source to Passive DI to mixer and DI to amp does work.
Very good video, very well explained and detailed. Thank you very much for the information! Hugs from Brazil.
You're welcome Luiz.
Very informative and helpful once again many thanks!
I have all 80’s rack gear there is no FX loop on my Amp nor my preamp I’m trying to figure how to get all this to work I purchased a Di box in hopes to get everything going it’s works but very low sound and it’s a 159 watt amp any suggestions
Chris I've received your email and will get back to you :)
Thank you very much for your DI videos. They helped me a lot.
+computerjantje You're most welcome, thanks for watching and supporting the channel!
I have a question, when I change, for example, the gain of the bass treble and other things on my amplifier, will that sound change on the mix?
It depends on whether the DI output is positioned pre- or post-EQ in the amplifier signal chain. On some amps this is switchable.
Your teaching is wonderfully clear. I'm one of those self trained live sound engineers with an MG series yamaha mixer - and yes, I have had seriously hot signals and, until now, I've been baffled by them.
I have a question that I hope you can answer- my bass player uses a Hartke active speaker and I have been using the amps built in 'line out' to grab his signal: My stage box has only mic inputs and so I'm unable (due to the distance of the my mixing board to the stage) to access the 'line in' inputs on the board. Until now I have been using the 'pad' feature on the desk to tame his signal - what woud you recommend in this instance?
If the input pad reduces the signal sufficiently then just keep using that :) An alternative would be to use a separate DI box for the bass, which you can then pad as necessary.
Thanks for the great video and information!!
You're welcome Baden!
Great information thank you! If an amplifier has an external speaker out output does this do the same function or is it to go straight to another speaker? (or does it cut out the sound coming from the amp speaker also?)
No it's intended to go to another speaker - different function :) Whether or not it cuts off the internal speaker depends on the design of the specific amplifier.
I have a Washburn guitar with both 1/4" and XLR out. Can I run the xlr out to xlr in
Yes you can.
@ Robert, If you want to take a line level signal and change it into a instrument level, then get a re-amp module. Radial makes one for $200 - $300. However, it is the wrong way to go about it, if you just want to amplify and EQ a mic. It's not going to sound that great, because the guitar preamp will most like not be clean and the speakers will induce an overdriven sound. I suggest using the preamp and EQ thats built into your mixer and take the mixers line out and sent it to an amplifier that takes in line level only like the ones in a PA amp. You will get more bang for your buck. If you just want to EQ your guitar then get an EQ stomp box and place it in-between your guitar and amp.
Another great video Bruno. Thx, and God bless you. My Q is, can I use an XLR to 1/2 TRS cable from a DI box's out to a line level input of my sub compact mixer to preserve mic channels for mics alone, thus maximizing the mixer's overall inputs. I don't want to lug around another mixer to sub mix to the main. Thx in advance for any inputs on this matter. Happy, and safe New Year everyone.
Happy New Year to you too 😄 Yes you can do that no problem - just be aware that the output level from DI boxes is generally around microphone level, and as such there may not be sufficient gain available if you connect to a LINE level input on your mixer. Try your specific setup and see if it works out. All the best for 2023!
thank you so much for this well thought out video!
You're welcome Rachel.
How about , Guitar > Multi effects > D.I > Mixer > Speaker Monitor?? Isn't good ?
I'm struggling to mix my tone..
Yes that's fine :)
the output from your mixer is going directly into your video camera but how would the sound change if you ran the mixer output to some decent pa speakers, a little different i'm guessing yes, of course depending on the quality of those pa speakers too but is there any sound still coming out of your amp as it's going to mixer via the external DI output ? I'm due to get my acoustic amp in the next day or two so i'm getting ready to try and hook it up to my small pa, Thank you for this video it's so helpful, Peace !
You would need to experiment - typically in a situation such as this the sound coming from the amp is used by the musician to monitor their sound on stage and the sound from the PA speakers is directed at the audience.
@@GLBProductions ok Thanks I understand, Your videos are Excellent, Peace !
Hello GLB productions. I have been watching your tutorial videos regarding DI's and how to use it properly. There's just one detail in your video thats a little bit not clear on me regarding what to use a passive or active external DI when using the built in DI of an amplifier( in my case I will be using a multiple effects guitar pedal-zoom g5 DI out). The problem is the DI out of the said multiple effects pedal seems to overload the pre-amp of my mixer -behringer xenyx 802. For now I am following your suggestion of using an xlr to trs adaptor but I would also like to try using an external DI, so what should I purchase, a passive or an active one? I was thinking its a passive one.
Btw, your video tutorials are really professional and not daunting to watch, keep it up! Please also make a video on how to match input and output impedances and how to read input output specs of various equipment such as headphones, amplifier, multiple effects, mixers. There's alot of videos for this topic but I believe that you can explain it better and simpler and more accurate. Thanks alot!
- Hi Marc thanks for getting in touch. The Zoom G5 is an active device so if you choose the go the external DI route you should choose a passive model.
Thanks for the excellent video suggestions, I will add them to the list :)
Wow so helpful needs shared to alot of people
Thanks for watching!
Is a "Direct Out" the same as "Line Out", or Phones ?
It depends on the amplifier - consult the user manual to be sure. On some amps the headphone output doubles as a line out or direct output, other amps have both a line out as well as a mic-level direct out.
@@GLBProductions thank you so much! your videos are well explained, and very informative!
Now how do you hook up DI if you don't have a line out on the back of the amp???
You would use a separate external DI box.
Thanks Bruno! I've learned a lot from your videos tonight. One thing that I'm still unsure about...I am a drummer and have also become the 'unofficial' Sound Engineer for our band, (which I'm actually really enjoying!) The guitarists in our band are constantly trying to ensure that they reproduce the best tone for our audiences. They both play electric guitars with no pre-amps or active pick- ups, they both use effects pedals and neither has a DI output built into their amp. The gigs we are doing are fairly small so at the moment we are able to manage by cranking their amps up. I would like to use DI boxes to run them through the mixer so that we can turn their amps down and reduce stage noise. Would I need active or passive DI's and would the front of house sound represent what the guitarists have painstakingly created, (i.e. including all EQ / effects etc.)?
Thanks in advance and I hope you can help. :-)
Dan Thorpe Hi Dan, thanks for getting in touch. The industry standard method for capturing electric guitar for many years was to put a Shure SM57 in front of the amp - this approach may still work for you, and will capture the most realistic sound. The alternative is to use a passive DI at the end of their pedal chain ie between the last pedal and the amp. However, if they use any of the amp effects those will be lost so you need to be careful with this approach. There are also some DIs like the Radial JDX that are designed to be run in parallel with the speaker and which do a very good job indeed, but are not cheap. So have a word with your guitarists and then get back to me :)
Really needed this, Bravo! Question, what do you do if you want to mix your tone on a mixer then send out to the amp? In other words plugging in your mic and guitar into the mixer and go out to the amp, would you need a D.I. box to change the signal on the amp to line level?
- Thanks for watching! In this type of situation the simplest solution is to use an amplifier which has two channels, eg a mic channel and an instrument channel.
Alternatively, if you are using a small external mixer, you should be able to plug the output of the mixer directly into the amp's instrument channel - experiment with levels and ensure there is no distortion.
Hello, Excellent VDO, do we need external MicPre for Vocals in live sound? if we do, can you show us how to use it? looking forward for your VDO
- Hi San, thanks for the question. External mic preamps are generally not necessary for live sound - big touring acts may use one for the lead vocal but that's about it.
Also if you direct out a combo amplifier, i am guessing you cannot use it as a stage monitor because it will bypass the built in speaker and instead the sound will come out into the mixer directly to the PA speakers?
No, connecting to the DI out does not deactivate the internal speaker - it's not like the headphone output on some practice amps.
@@GLBProductions how about line out? will it deactivate the speaker?
Depends on the amplifier but generally no.
@@GLBProductions thank you again! have a nice day
Hi I have a Roland Cube EX which serve as a PA system for my mic and electric guitar, can I still use the amp as it is with my mic and just make a one signal line to a passive DI? Would it affect my mic sound?
Where is your signal line coming from? Your guitar or the amp's line out?
GLB Productions the signal would be coming from the amp, my Eguitar and shure58 mic would be plugged in to my amp (which is my PA for mic and guitar)
Why did you use the active DI when using using with the Hartke amp? The output is an active signal so isn't the general rule is to use the passive DI? Thanks
Oh never mind, I think you have it directly hooked up to the base guitar. sorry, it wasn't clear at 1st.
Hey men! which is better? an audio interface or DI box during live sessions? I'm using a laptop to produce my sound. thanks for the help.
An audio interface, as long as it has a balanced output - you want to avoid using the minijack output on the computer if possible.
Thanks for the video. This was extremely helpful and informative!
phealingood You're welcome, thanks for watching!
I am confused....how the mixture has an affect on the amplifier because the sound of the guitar didn't pass through the mixture..please
The mixer (not mixture) settings have no effect on the sound of the amplifier: the signal chain is guitar -> DI -> mixer or guitar -> amp -> mixer. The idea is that the player controls their own sound on stage, you the sound engineer control the sound that the audience hears.
You did now show the sound coming from the mixer speakers.
Sorry I don't understand your question.
Hey hello, very useful video, but I soon encountered this problem, I want to ask, when at 3:40 min connect the XLR cable this way, can we cause damage to the apm when we do not have a sound box connected to the amplifier itself? Because I use a Tube head "Laney GH100R". Thanks in advance!
In general, tube amplifiers should always be run connected to a load - either a speaker cabinet, load box or something similar. There are some exceptions to this, but check with Laney on your specific model to be sure.
@@GLBProductions Thanks for the quick reply, very accurate and straightforward, I respect that, I'm not sorry to subscribed!
Can I use a di box to connect the sub out of my Tascam model 12 to a Mackie Thump 12a. Reason being that there is a lot of noise and distortion at line level.
Before you do that try turning the input level control down to under 12 o'clock on the mackie - you need to figure out where the distortion is coming from.
@@GLBProductions thanks for that. Will do so accordingly. I think the sound is coming from the usb cable between the computer and the mixer.
Easy to diagnose then 😊
I cant understand, why i cannot input the bass/guittar to the mixer? It have a gain input!
+Danilo de Nadai Sícari You can if the distance between the guitar and mixer is less than five meters AND the mixer has a high impedance or instrument input.
This video helped me a lot. Thanks
Shouldn't there not be a frequency spectrum issue from connecting the DI out from the amplifier into the instrument input of the mixer as you did with the XLR-to-jack connector? I imagined that the low-to-high impedance mismatch from a DI output into the instrument input of the mixer would be similar to a high-to-low impedance mismatch of an instrument signal being input directly into the microphone inputs of a mixer. Could you clarify this? Thank you for this video series.
That's a great question! First of all, just to clarify: the XLR to 1/4" adapter is plugged into the mixer's LINE input - this particular mixer does not actually have a true high impedance (Hi-Z) instrument input.
Secondly, when it comes to matching impedance, the rule is that the load (destination) impedance should be at least ten times the source impedance, so going from low to high is always ok - problems only arise when going from high to low, hence the need for DI boxes. In this specific case the amp direct out runs at line level so is an ideal match for the line level input on the mixer.
I don't have a DI Out at the back of my amp. All I have is 1/4" line out. How do I connect this to my mixer?
First of all check to see if the line out is balanced or unbalanced. If balanced it can be run directly into your mixing console using a TRS to TRS cable, or a TRS to XLR male cable if running through an XLR snake. If unbalanced, run the line out into a DI box and from there to the mixer.
Some preamps have a switch that controls the pre and post EQ/preamp on the line out
Correct, but those are typically only found on higher-priced rigs.
GLB Productions I have one of those higher end models, Demeter bass preamp
hi, may i ask a bit of explanation for the "tape output" in the vid? thanks!
The tape output is a copy of the main mix on unbalanced RCA connectors, designed to connect to a tape recorder. On other mixers it's labelled 'REC OUT' or something similar.
You are amazing! Thank you so much for this valuable information.
You're most welcome Boris 😊
Awesome videos man! Thank you for providing this info!
You're welcome Edgar!
Thank You Very Much, very instructive.
- You're most welcome, thanks for watching.
My question is that when you are using the Radial DI Box are you using the amp at all? And if you're not, then where is the tone coming from? Thanks!
Which exact part of the video are you referring to?
@@GLBProductions when you're showing the comparison between the Vox DI and the RADIAL DI. I understand that when you're using the Vox DI the tone is coming from the Vox, but when you're using the Radial DI are you also plugged into the amp in some way or just straight into the sound board with no amp involved at all
Ah yes that part - in the video I am not plugged into the amp because I am just demonstrating the difference between the two DIs. However during a gig you would run another cable from the thru connector on the DI into the amp so that you can hear yourself.
I like amp DI and external base DI
Thanks for sharing your thoughts...would it be the same to use DI boxes with Digital mixers?
- You're most welcome. Yes, exactly the same setup in terms of connections, although on digital mixers the gain is set slightly differently.
Thanks for your video! I found it really helpful.
You're welcome!
I have a yamaha mixture....do i need DI BOX TO PLAY MUSIC FROM MY PHONE??
It depends - take a look at this video: th-cam.com/video/ge4Iynh4rcc/w-d-xo.html
Is it possible to connect a mixer to a guitar amp for the purpose of increasing inputs? I have an AER Accousticube 3. It has Mic, Line & Instrument inputs selectable on its 2 channels. I'm thinking that connecting a line output from the mixer into a channel selected as line input should work ok?
Yes it is - you are effectively using the amplifier as a sub-mixer to add channels to the main mixer 👍🏻😃
@@GLBProductionsThank you for your reply. I bought a Zoom L20, delivered yesterday. Works great in my AER.
Ah ok - I misunderstood your question: you are actually going mixer -> guitar amp and not the other way around. This can work too, provided the amp has a true line level input: on some amps the quarter-inch input can accept instrument but not line levels, which leads to distortion. Glad it's working out for you :)
@@GLBProductionsYes. I’m going to be leading worship on a midweek meeting but wanted another singer or two and my AER only has 1x mic input. 20 channels on the L20 is over kill but better to have more not less 😊Yes Acousticube 3 has a piezo, line & mic options on each of the 2x channels even though only 1x mic port is available. Both channels are identical in EQ and input selections whereas my previous Acousticube IIa had dedicated instrument channel 1 and dedicated mic channel 2.
Yes I have this challenge as well with my acoustic amps - the way I get around it is by using a small Mackie mixer whose XLR outputs can be switched to mic level - this allows me to use the mic input on the amp for all the mics, and use the guitar input for my guitar. All the best for your meeting, may the Lord Bless your praise and worship 😄
I'm having a serious problem with my new amplifier. I just bought a Blackstar ID260 2X12 combo amplifier and in the front it has a mini usb that runs right to my computer for recording in Reaper software. I'm not happy with its sound of recording. So I wanted to use a better method to record with this amp. 1 choice is micing the amp, and the other would be to use the output on the back on my amp. But there lies the problem. The output on this amp is also part of the effects loop I use for my pedals. How do I get around this to where I can record directly to my PC without having to give up my pedals in the effects loop? Is there a way?
If the mixer has a line level input, could you plug an active instrument straight into the mixer without a DI (assuming it’s a short cable)? Or would you lose audio quality doing that?
Sure no problem doing that.
Hey m@n do you think i would benefit from a DI box such as the Radial JDI to process the sound of a guitar Tube Preamp (ENGL E530) which i run for now on a Mackie VLZ4 mixer (such as yours) in order to blend the two signals of the regular Line Out & the Mike-Up EQ compensated Out (with a L/R panning) of this preamp N then passed it thru a tube power amp of the same brand ENGL .....IMO i have a pretty good sound right now by using this setup utilizing the 2 Stereo Inputs of the VLZ4802 mixer ....it enables me to process this blended signal to the ALT out (Sub-Mix) going into a ART Pro VLA Dual channel Komp (really good with upgraded tubes!) in order to bring it back to the Stereo Return on the Mackie mixer (therefore the Main-Mix) N record by routing this to my A/I a really Phat Take of my Tube Preamp going thru as well into a 100% Analog Cab-Sim Palmer PGA05 ...N all this in 4CM into my Boss Gt100 multiFX processor !!!!
No, I don't think so - DI boxes like the Radial JDI are not designed as tone modifiers. You might get a tiny increase in warmth due to the transformer but it really would not be worth the money spent, especially as you already have a tube power amp in the signal chain.
@@GLBProductions Ok many thanks 4 the reply ^^ im thinking about this coz im not sure about the Impedance matching in between the Outputs of my Preamp & the Stereo Inputs of the VLZ4 mixer ...what do you think about that ? ive read in the manual they R greater than 17K but ive no idea of the E530 Output Impedance... that's why i was thinking about a DI box (in stereo) but ive read on a forum that the E530 have buffered line outputs with OPamps, so no need for a DI
Email them and ask! Describe your signal chain and ask if they foresee any impedance issues. Any reputable manufacturer will be more than happy to answer this type of customer question :)
@@GLBProductions yeah ive already done that !!! they don't know the real Impedance but anyway i think it is a good setting coz the Output Imp. of the preamp should be much more lower than the Stereo Input Imp. of the Mackie mixer ...actually it sounds good !!!! Thanks again 4 your help
Sounds like you got fobbed off man - any technician worth his multimeter would be able to look that up in an minute. Very disappointing! But yes - preamp line output to mixer line output would almost never be an issue. All the best with your music 😊
hi Bruno ..Myself Ankush .I am asking a question . I am a professional bassist. My instrument is Ibernez SR305 and i will connect it with Bass Pedal Zoom B1. so which DI is need for play in live stages Active or Passive and why?
Raj De I would suggest a passive DI box for your set up because the zoom unit being battery powered is an active circuit.
Great videos, thanks a bunch!
You're welcome, thanks for watching!
What if your amp doesn’t have a di xlr? Can I still hook it up to the mixer?
Sure, just use the line out and connect that to a DI box.
great info sir...my question is how does the polarity switch fix the resonance problem.
Mike Odie Simply put, the polarity switch puts the top of your guitar 180 degrees out of phase with the sound coming from the PA system - resonant frequencies thus tend to cancel one another out rather than building up and turning into feedback. This does not always work and it depends on where exactly you are standing relative to the monitor speakers/PA system but it's a useful tool to have.
not sure what you mean by top of guitar...could you explain further
Mike Odie With acoustic instruments, sound is produced by the strings vibrating the top of the instrument, the soundboard. Sometimes, the soundboard itself can pick up vibrations from the PA system or monitors - this makes the instrument behave in a way that is very similar to a microphone, and is the reason why some acoustic instruments feed back even when using pickup systems. By flipping the polarity switch, you put the vibrations coming from the top of the guitar (when you play it) 180 degrees out of phase with the sound coming from the PA system - this has a tendency to cancel out the resonances that cause feedback. Hope this helps.
yes it does thanks....i am covering induction motors in my class right now and i often refer to speakers and musical instruments as a way to add interest and analogy. we deal with sine waves, magnitude, polarity, induces voltages and all the same theory that is involved in acoustics and sound reinforcement . i am a sound enthusiast and engineer myself and will be honest i never pursued the polarity switch. every time i tried it nothing improved...anyway i've tuned in to your videos and you do a fantastic job at presenting information about your trade. it's informative for beginners and experienced sound techs...thanks and keep up the great work ! and check out my channel for some all original all live and all local music from nova scotia canada...i'm recording with a zoom h4n and video is shot with a canon t3i in full 1080p hd....cheers
Mike Odie Glad to hear that. Using the polarity switch is rather hit and miss because its effectiveness depends on the frequencies that are feeding back as well as your position relative to the main and monitor speakers. There will generally be one position (either normal or reverse polarity) that produces the best results and that's the one you should use.
Yes you have lots of interesting content, I had a look at your channel :)
Hi Bruno...a question. If you use a wireless receiver/sender, and plug the receiver into a 1/4 inch channel on the mixer, and plug the sender into your instrument, does that setup negate the need for a D.I Box?
Pretty much - you've reduced the length of the cable run to the distance from the receiver to the mixer. Of course, wireless systems can have other problems that create noise...