I am left with a few questions does the efficacy and amp draw differ and if so by how much with the same said 1k example from before 1k is a really good example very achievable on a stock electrical
This was a very necessary video to help fill some of the remaining gaps in general understanding of amplifier circuits! You're a master at translating complex functions into layman language!
This channel has become such an incredible resource dude, if they ever do a "Class D for Dummies" book, you'd be the perfect author. Well constructed, easily digestible explanations both verbally and visually!
Nice vid !!!!. Clear and shot to the point !!!. This is the same as BTL config on AB systems of those units where no terminal is ground. There are 2 amps 180 out of phase on each terminal. Probably the confusion (with soun quaility) is that full bridge is more common to class D things topology ?. But the trick is old enough to get more power from low voltage (at the expense of more current), used on Boomboxes from the 80s, since you CANT carry more D cells aways from 12V. The only choice was to lower the ohms of the speakers, use a transformer output (McIntosh !!!!) or use a BTL chip with two amps per channel. Transformer coupled ouput had been around portables in the 70s and were able to "double" the theorical power ouput from the same rail and used just NPN transistors for the stage (PNP were more expensive back then). The transformer is center tapper and this tap is tied to V+. Each endo of the primary is hocked one transitor that works half a cycle on full V+ swing. Of course even when this is the OBVIOUS way to get more power from the same rails (but you will need MORE CURRENT), no one is putting a 500W rated audio transformer. Well not an AF one LOL, too bulky, and too expensive.
That is an awsome explanation. Also helps to understand how those amps are so small compared to older amplifiers designs. Heck a 1000w RMS amp used to be 19"x8"x2" as an example.
Sam you are the best at explaining how amps work, I love your channel man. Your the reason I bought a Taramps and after a year of it in my trunk I love it.
Another great video SAM!! I’m glad to see you finally heed my advice to put out these Bite-size videos that are easier on the editing/filming/writing side of things yet still get more views than the longer repair videos or live streams. Yes, we will miss the in depth repair and niche learning but the mainstream TH-cam viewer will net you more views/interactions/subscriptions. Keep up the great work!! 👏🏼👍🏼👊🏼
Good to see your still around checking comments thanks for all good info. Watched 12v talk with Larry Ferdrickson...the Phenix gold guy, was saying about slits wire just a top interview well worth a watch .
im glad you are the one who explained this instead of some keyboard forum reading loon spreading info that another loon had told because it makes sense to them
Special case... you were barred from joining this chat.... 😂😂😂 In a sense, the war house is rather a different breed as it splits the sine wave, to one carrying 0 -v down and the other 0 + u. So some modulation high switching in between to avoid a strike through. Actually your amp is good for when you want to disturb the neighbors but terrible when you really want to listen to music 😒. The war house is actually a half bridge. The only thing how it puts the sound out. More like an incomplete class AB, where the A transistor takes the high, and the C transistor takes the low. Only this time, they got tired i guess of mashing the circuit up to have a single terminal.
@@Assistingalways Might be better to call the warhorse half of a full bridge amp. If you put two of them in the same case with one wired in reverse phase it would act very similar to a full bridge. Now I just need a second one..
@@NVMDSTEvil good luck getting one. And you wanna do that in a very low current. Yes its like unfinished Full bridge. With a circuit missing for completion.
Also I have a 3000.1 taramps I swapped it out with a half bridge down for sounds 800w and it is louder and hits harder on the subwoofers. Why would that be? Both stubs are 15 in 1200 RMS. I am running the settings as far as gaining filters about the same.
Can someone give me some help I have a boss ch1000 and well when powered on it doesn't turn on and I get no protection or power led lighting and the fuse isn't blow I can't figure out what to check in the amp to rule out any problem, I have the amplifier on a test bench
It is amazing how many arguments I've had with people about this and they REFUSE to acknowledge the facts you spoke of here. What really got people going is when i said full bridge is more complex than half bridge from a circuitry standpoint. People's heads exploded and their ONLY argument was to post internal pics of huge korean half bridges and say, "look!! See!! Moar parts iz more complicated!!" LoL
@@billybubba5251 you clearly did not watch the video. Full bridge while more complex only requires 1/2 the rail voltage to accomplish the same power. Full bridge is to half bridge what EFI was to carburetors....or vvt to non vvt engines.
@@billybubba5251 so JL isnt mainstream? So alpine isnt mainstream? LMFAO!! If you didn't watch the video, then seriously WTF are you doing here other than lowering the collective's IQ level?
@@billybubba5251 seriously full bridge IS mainstream and HAS been for DECADES! Watch the video and he give about a half dozen examples....or are yoy intimidated by those of us that actually understand all aspects of most amplifiers and can repair them on demand?
@@billybubba5251 dude you didn’t even watch the video....are you saying JL slash and alpine MRP(both FULL BRIDGE IDIOT)...the two best selling amps ever are not mainstream
@@billybubba5251 you are probably the guy that buy a $100 Walmart amp and actually believes it will push 2500w. You really sound that idiotic. Full bridge amps have been and are mainstream. One example today is taramps. If they aren't mainstream then how come you can find them everywhere? Powerus amps are an example of a company that isn't mainstream. Matter of fact there are a lot of mainstream companies that actually do make full bridge amps
So as far as voltage goes, you saying I don't need to run crazy amounts of high voltage to the full bridge? Is it fine with steady voltage around 14.4 that doesn't dip so low with a good high output alt?
It's on a after market head unit I am runnin my amp without the remote wire even in it I must have got solder somewhere on the power supply now it's running the amp as soon as it gets power and ground connected please some advice thank you for your help
I dont understand why anyone would give this a thumbs down. It facts, knowledge. Guess always going to be hand full of haters who think they know better. Thank you for the awsome videos keep up the awsome work
I connected my 5ch amp to a speaker to test. Problem is I connected to - on ch2 and - on the sub channel. It started smoking but when I took it apart it looked fine. Why would it smoke combining class a/b negative and class dcnegatibe to one 50w speaker?
I appreciate ya explaining this. I hear so much bad about full bridge, apparently they do not know what they are talking about. Which salt is majority of people in car audio. Thank you for clarification
Awesome vid! I was searching for this difference a few days ago. your explanation is the best in my opinion... Which one is better for subwoofer sound quality-wise from your experience?
Neither, fullbridge and half-bridge make no difference in terms of "subwoofer" abiity or sound quality, as I explained here. It's just whether there's one output or two in push pull.
@@barevids @barevids but dampening factor on the amp and signal to noise ratio specs on amps does change the quaility of sound a amplifier makes isnt this why purist of big ol halfbridge amp guys prefer those 2 feet long korean amps? Also isnt the full bridge design much more rougher dirty signal to the voice coil? Thats the biggest complaint about fullbridge amps ppl call them dirty power can u explain the term dirty power and why brazillian amps have a reputation for being "dirty" power.
@@joshholden8561 You did watch the full bridge amps were what someone like JL Audio and the legendary JBL Crown amp used. Those things were magnificent, the JL Slash amps are legendary. Those are arguably much better sounding than any half bridge he had shown.
I have a power acoustic vertigo 10k and I was on my way home and it started smoking but still working so I shut it off and took it out opened it up and the board ground was burnt in two and melted any ideas on wat happened
Is it the same for class AB? I was going to try and BTL a multi channel receiver, but after thinking about it, I thought that because they have some sine wave overlap being class AB, I would worry that 1 channel would feed a high voltage into the other channel. EG in your example of +45v & -45v, wouldn't sending +45v into channel 2 cause magic smoke? Or is the speaker load enough for it to absorb the energy so that there is no issue? Basically I bought a powerful receiver and I was going to build a unbalanced to balanced converter, sending non-inverted to channel 1 and inverted to channel 2, all I have to worry about is if the speaker negative terminal is ground, which you can test by testing continuity between them all
I actually killed a receiver once, it was hooked up to a pair of speakers and we were about to hook up a power amp to them, the speakers were connected with banana plugs and the + wire of the power amp (that was turned on with no signal) touched the + of the speaker with the receiver still attached (with no signal playing) and poof, roasted the receiver. Totally baffled me, they both should have had 0v on the + line because they both had no signal
One thing I’ve been wondering in regards to this topic: a half bridge amp has a subsonic filter while a full bridge doesn’t, so is it even needed at all?
What? Being half or full bridge makes no difference to it having ssf or not, that just depends how the pre-amp has been designed. All the Brazilians have subsonic filter but it's labeled up as hpf since it has a much higher range.
many brazilian fullbridge is full range operation, that mean his using a high pass filter, actually just a same thing, cut a lower frequency. but taramps bass line is sub amp or low frequency amp, same as most half bridge monoblock. just for subwoofers. taramps bass line have a subsonic filter ☑️
The question I always hear is that they sound different, and don't play as low I have had 2 smart 3ks @ .5 each on my setup did a 153.5 and then I tried an ampere 7500 (wired at 1 and did a 152.5) the smarts were 1db louder but the lows honestly seemed a little bit better from the ampere, but then I then switched to a SFB 13.5k which got me from a 153.5 to a 155 at 35hz and the lows feel pretty strong from that amp but I'm guessing its because of the amp being much larger in power, but does the crossover affect the lows lets say like 30hz and below on fullbridge and you need a bigger amp to compensate for the crossover falling off or is it something else
You just need to set the filters correctly. On the Brazilian design amps all knobs should be at zero other than the level, and you want an active LPF on the head unit or DSP set to 55-65hz 24db.
@@billybubba5251 funny thing is that both the fullbridge definitely were more efficient to I didn't drop voltage as hard but was louder with both of the setups
Had a question for you about my sd8800 .1 I recently hooked it up I stepped on the remote wire and it broke the remote input inside the amp the solder broke so i resoldered it and now it comes on as soon as I plug in the ground and power without the remote wire in it so I have to take out either the ground or power to turn it off now is this ok to run my amp like this or what should I do I dont even know how to fix amps and my warranty already expired on the amp let me know what you think please and thank you
@@barevids hate to bother you, do you think I can continue to run the amp like this without having any issues as long as i unplug the power everytime I am finished listening to the sytem
actually subsonic filter is just a samething with high pass filter, cut a lower frequency. doesn't add any performance on a sub. this filter just protect a sub from damaging from extreme lower frequency. just it
Do they bother with having a split rail supply for full bridge, since they don't need to? I guess it's only a centre tap on the transformer output to have this if it's needed for some reason.
Mr Bare Vid, thank you for this particular video of full-bridge vs half-bridge amplifiers. Now I have to say this, I have i'll feelings towards the guy from EMF Audio. Who did a video somewhat like your video I just watched, explaing the difference between Brazilian and Korean amplifiers. Anyway, I had a problem with his video due to te fact that he was comparing two totally different amps. His amplifier has no High-Pass Filter and the Taramp has a High-Pass Filter. so he was comparing how the taramp was loosing voltage and his amp maintained voltage through it's frequency band. But I wonder why he didn't do a comparision between a bass half-bridge amp and bass full bridge amp, both with no High-Pass Filter. Thanks for your time.
What about the sound quality difference ive always heard about? Ive never ran taramps for example but i want one just been so unsure? Would running a dsp help? Ive been told it wont do much cuz its the amps fault they sound bad
They sound "bad" because they have very basic on onboard crossovers usually crossed over at 90 hz. This allows some vocals through the subs. An inexpensive electronic crossover or dsp will quickly solve that problem. I absolutely love the sound of my Taramps... smooth, deep, crisp and no noise.
@@billybubba5251 Full bridge is main steam gtfoh with that crap hell at slamology 80% of the whole show was running Taramps and is one if the best and fastest selling amps on the market hell the smart 5ks are taking the market by storm, because they redid the crossover section to meet our way of running these amps here in the US and they sound damn good, how about you go troll else where
Starting to make wonder if my newer Infinity is full-bridge. The K1000. Anyone know? I forgot to check before installing. Where it's installed is a pain to get to.
I think the high voltage thing just comes from the fact that there are high Ohm Versions of some fullbridge Amps out there, Taramps HD 4Ohm version for example, they need to provide higher voltages of course…
I love the video! But I have a question out of all Brazilian full bridge amps do you think the banda viking 8001 is a better built amp than the taramps bass 8k and the soundigital 8000.1d. I also would love to see which amp puts out the most RMS watts too! But keep dropping the great videos! Your a great teacher!
@@NightshiftCustom I got 3 taramps smart3 bass 8k and a 4 channel taramp for mids and Highs. I know what they do but was just wondering which is the best
So the wiring would be the same as wiring an half bridge amp just full bridge pulls less voltage? So you can't wire , we'll use sfb 3000 , let's say two dual 4 ohm subs to one + and - for 1ohm load at 1,000 watts And then another same set to the other + and - for another 1,000 ????
You forgot to tell that most, if not all, bridgeable stereo amplifiers are two half-bridge amplifiers working in 180° phase shift, not accounting for differences in left and right channel, and when you bridge them you get a full-bridge amplifier.
These kinds of videos are why I got interested in car audio. I started out interested in Home theater, but home theater guys know nothing about how their systems actually work and get in arguments about cables and stupid snake oil shit that doesn't do anything.
You don't connect anything to ground. You connect the speaker across the two positives. In most amps, the second positive is actually labelled up as "-" and is out of phase at all times, which is a clever way to allow regular and bridged operation without the need of a mode switch.
Is frequency response affected? If so, how/why? You mentioned that sound is not affected but many people claim to notice a significant low end performance difference between the two designs. Can there be a valid reason for this? Thanks!
The Brazilian amps have a preamp section for their audio scene not americas so many cut into what we consider useable frequencies. Not all of them do this but whatever I run active so the amps filtering section doesn’t matter to me
If I used a full-bridge amplifier & set everything on pass & used an external processor to do all filtering, technically I shouldn't have any noticeable difference in my low end response VS. a half-bridge design? Also heard users mention that half-bridge amps are more "musical". Is there any reason why this may be? Or most likely another myth? Keep up the great work bro 👊🏼
@@aaronali8950 people who have money in on you buying halfbridge rebadges say things that make you buy them. i swear brands controlling/moderating forums where people talk about their gear is a big part of why the online car audio scene is a toxic cesspool of nuthuggery and bashing. they only reason it may be more musical is if the filtering/preamp section is set to where it cuts into useable frequencies people swear by jl slash and the old alpine mrpm2000 and many other amps alpine puts out. all fullbridge. i think the big audiopipe amps with 2 1500s in the chassis sound fine thats the same as bridging 2 amps which is the same as a single fullbridge amp. fb vs hb has nothing to do with the sq of an amp there are other factors there
Very thankful for this explanation! Every car audio contest I go to I get off hand comments about my Brazilian Taramps amplifiers being "dirty" and there is so much disinformation out there. They usually stop running their mouth after they get out of my truck though. 🤠 ( I do have one guy however who refuses to get in my truck and he is the loudest mouth...) There is a video: th-cam.com/video/TRvrQIXjEMs/w-d-xo.html that was posted this week showing the Taramps MD8000.1 on an oscilloscope doing some wacky things. I would love to know what your thoughts are on this. Probably oscilloscope user-error. He has lots of problems especially not having enough voltage / amperage available for the amplifier and possibly too high of input preamp voltage. Lots of people watch him (19k subscribers) and I'm worried that he's going to spread even more disinformation because of user error on the Brazilian full bridge amplifier. Thanks again for the explanations! 🔊💥🤪
I know there shouldn’t be any sound quality difference between the the 2 but I bought the Smart3k for running two 12’s at 1 ohm and when the amp quit working I traded it for a Orion XTR2500.1 and it was a noticeable difference in sound quality and speaker control. And the Orion makes less power ? Also noticed the Taramps got much hotter than the Orion amp.
@@barevids I actually used the Alpine head unit crossovers and EQ. I noticed when tuning the Taramps the pots were not very smooth. It was like nothing was happening while turning them and then they would jump. It was kinda difficult dialing them in, so thankfully the head unit being digital was a better option. Even on the Taramps 4X440 mids/highs amps when I was adjusting the gains, one channel was going in and out. These amps make great power, just not good on crossover and gain settings
The first time I heard s full bridge amp (a sounddigital ) it most definitely had a less defined, sloppy sounding bass. Are you saying the difference in sound is solely due to the manufacturer quality and has nothing to do with the amp architecture? If that's the case then the whole belief of full bridge bass sounding bad compared to half bridge is totally a myth?
@@billybubba5251 if full bridged amps sound so bad.. then why does everybody love how my deaf bonce apocalypse 2k "full bridged Brazilian amp" sounds on my sub?
You need to give more credit to MMATS Pro Audio. If you knew your history, back in 1996, MMATS was the first to design, manufacture and deliver to the Car Audio market a Full-bridge Class d Subwoofer amplifier (D100HC). They went on to hold 3 titles over 3 years in the DB Drag race org, Loudest and Deathmatch!! Crossfire (CHung-lam, S. Korea) and Earthquake were the first to copy the topology and Earthquake being an almost direct reverse-engineered piece. The amps from Brazil are built with labor just about the cost of China and unfortunately can come to the USA without tariffs making it very difficult for MMATS to keep building in the USA....but they still do and have quite the following. first quarter 2022 should be very interesting for them.
So a full bridge amp acts similar to how we get 240 volts at most residential housing here in the USA, two legs of power 180 degrees out phase. So if you took a sub and hooked one up to a power than connect the other side to the ground, would it operate and play at that single sides voltage? Obviously not the way your supposed to use the amp, but can you haha.
Sweet vid, I was just going to suggest this. Can you talk a bit about why a full bridge out put wires have current active without any sound? I've had my lines touch the chassis and had some big sparks flying. Also can you chassis mount a full bridge?
Hey man! This is due to the amps only running a single positive rail voltage. In order for for the speakers to "see" positive and negative voltage from only a positive rail, the amplifier generates a floating virtual ground for the speaker, which is exactly half rail voltage, so that the sine wave can swing down to ground and up to rail. So even with nothing playing, the terminals will still have high voltage on them referenced to vehicle ground. It's an easy way to kill these amps.
@@barevids Wooo I geek out when I get a response lol. Yes sir I was aware and also learned the hard way. Had my SFB 1500 die when it touched the amp chassis. I don't think that many people are aware of the dangers of a class D amp especially a full bridge. Maybe you can clarify if you haven't already. I'm trying to catch up on your vids,and a big thanks for what you do. Bass on my friend 🔊✌
Hey man I’m looking for some education on what companies design their own amps I’ve been watching your videos and I know I few companies obviously the big guys JL RF Alpine kicker any others I should know about looking for good options! Assuming Phoenix gold has their own technology too?
@@barevids i ended up watching that Phoenix gold amp video you did! I have a 1200 watt prime not the new one with the c.l.e.a.n. Tech . Was looking to upgrade just not sure what to!
@@billybubba5251 Bro what are you talking about if you're having problems with cone control thats your box not the amp, especially if your subs bottoming out your box is too big or your playing way below tuning
@@billybubba5251 Good for you buddy I run it and love em no problems and got good sound quality even put together 2 brands guys like you bash and show other guys like you that you can get damn good sound from amps and speakers that are so called cheap
@@billybubba5251 sorry buddy, I'm muting you from the channel. This is the third instance of plain misinformation you are spreading on a topic you know absolutely nothing about.
Why? They make 2 or 4 ohm ohm versions don’t always need to wire down to .5 in fact in some cases wiring you voice coils in series might work out better for you But there are the new smart amps that will do .5 fine
I agree, why wire them down into the dirt? Just run them at the rated impedance like the manual says and be happy. If that's not enough power just go up to the next bigger amp. They go up to 30,000 watts. 😁
I got my subs kinda on a wim and they come out to .5 my current amp doesn't care but it means if I upgrade I'll need either 2 amps of another 1/2 bridge that can do it and I really like my subs maybe I'll recone them so I can get 1ohm idk
@@brendangardner7639 Oh, I gotcha. I had similar problems... I ordered dual .5 ohm subs and PSI sent me dual .7 ohms... It screwed me all up and I ended up having to buy a second Bass 30k. Expensive mistake but this is not a cheap hobby. 😁 On another note I have seen a few people run the Taramps Bass series down to .5 ohms. A guy near me does it and his truck absolutely slams. His name is Steve Green and he owns the Knob Koncepts company. His amps get pretty warm when he is hitting 160 db but so far he hasn't blown his Taramps. I myself have run my Taramps MD 8000.1 amps down to .7 ohms for over a month without any issues but I don't really recommend it. Better safe than sorry. 😊
Darn fine video my friend! Easy to understand. Right to the point.
Darn straight...
I am left with a few questions does the efficacy and amp draw differ and if so by how much with the same said 1k example from before 1k is a really good example very achievable on a stock electrical
I have gained more understanding about how amplifiers work by watching him work. Definitely comes across clear.
This was a very necessary video to help fill some of the remaining gaps in general understanding of amplifier circuits!
You're a master at translating complex functions into layman language!
This channel has become such an incredible resource dude, if they ever do a "Class D for Dummies" book, you'd be the perfect author. Well constructed, easily digestible explanations both verbally and visually!
If Sam ever published books on car audio I'd definitely purchase them. He speaks facts regardless of his opinion
@@beardedforlife3740 THIS!!!
Nice vid !!!!. Clear and shot to the point !!!. This is the same as BTL config on AB systems of those units where no terminal is ground. There are 2 amps 180 out of phase on each terminal. Probably the confusion (with soun quaility) is that full bridge is more common to class D things topology ?. But the trick is old enough to get more power from low voltage (at the expense of more current), used on Boomboxes from the 80s, since you CANT carry more D cells aways from 12V. The only choice was to lower the ohms of the speakers, use a transformer output (McIntosh !!!!) or use a BTL chip with two amps per channel.
Transformer coupled ouput had been around portables in the 70s and were able to "double" the theorical power ouput from the same rail and used just NPN transistors for the stage (PNP were more expensive back then). The transformer is center tapper and this tap is tied to V+. Each endo of the primary is hocked one transitor that works half a cycle on full V+ swing.
Of course even when this is the OBVIOUS way to get more power from the same rails (but you will need MORE CURRENT), no one is putting a 500W rated audio transformer. Well not an AF one LOL, too bulky, and too expensive.
That is an awsome explanation. Also helps to understand how those amps are so small compared to older amplifiers designs. Heck a 1000w RMS amp used to be 19"x8"x2" as an example.
Sam you are the best at explaining how amps work, I love your channel man. Your the reason I bought a Taramps and after a year of it in my trunk I love it.
Another great video SAM!! I’m glad to see you finally heed my advice to put out these Bite-size videos that are easier on the editing/filming/writing side of things yet still get more views than the longer repair videos or live streams. Yes, we will miss the in depth repair and niche learning but the mainstream TH-cam viewer will net you more views/interactions/subscriptions. Keep up the great work!! 👏🏼👍🏼👊🏼
Concise, informative and easy to understand. You truly earned my like.
Will there be any discernible difference in current draw on a half bridge vs a full bridge 3000 watt amplifier?
Good to see your still around checking comments thanks for all good info. Watched 12v talk with Larry Ferdrickson...the Phenix gold guy, was saying about slits wire just a top interview well worth a watch .
This simultaneously gives me answers and has also raised more questions
Damn I love your videos!!! always exceptional explanations of how things work and the myths surrounding them.
im glad you are the one who explained this instead of some keyboard forum reading loon spreading info that another loon had told because it makes sense to them
Thank you for that explanation. I'll be waiting for the full explanation video.
Thanks for making a video that saves about 1000 words in Facebook comments. Great vids as always!
*Kicker warhorse walks in “where do I fit in guys”😂
Special case... you were barred from joining this chat.... 😂😂😂
In a sense, the war house is rather a different breed as it splits the sine wave, to one carrying 0 -v down and the other 0 + u. So some modulation high switching in between to avoid a strike through. Actually your amp is good for when you want to disturb the neighbors but terrible when you really want to listen to music 😒. The war house is actually a half bridge. The only thing how it puts the sound out. More like an incomplete class AB, where the A transistor takes the high, and the C transistor takes the low. Only this time, they got tired i guess of mashing the circuit up to have a single terminal.
@@Assistingalways Might be better to call the warhorse half of a full bridge amp. If you put two of them in the same case with one wired in reverse phase it would act very similar to a full bridge. Now I just need a second one..
@@NVMDSTEvil good luck getting one. And you wanna do that in a very low current. Yes its like unfinished Full bridge. With a circuit missing for completion.
Never knew this about half bridge and full bridge. Def learned something today!
This dude is awesome, i love the passion.
Also I have a 3000.1 taramps I swapped it out with a half bridge down for sounds 800w and it is louder and hits harder on the subwoofers. Why would that be? Both stubs are 15 in 1200 RMS. I am running the settings as far as gaining filters about the same.
Can someone give me some help I have a boss ch1000 and well when powered on it doesn't turn on and I get no protection or power led lighting and the fuse isn't blow I can't figure out what to check in the amp to rule out any problem, I have the amplifier on a test bench
It is amazing how many arguments I've had with people about this and they REFUSE to acknowledge the facts you spoke of here.
What really got people going is when i said full bridge is more complex than half bridge from a circuitry standpoint.
People's heads exploded and their ONLY argument was to post internal pics of huge korean half bridges and say, "look!! See!! Moar parts iz more complicated!!" LoL
@@billybubba5251 you clearly did not watch the video. Full bridge while more complex only requires 1/2 the rail voltage to accomplish the same power. Full bridge is to half bridge what EFI was to carburetors....or vvt to non vvt engines.
@@billybubba5251 so JL isnt mainstream? So alpine isnt mainstream?
LMFAO!!
If you didn't watch the video, then seriously WTF are you doing here other than lowering the collective's IQ level?
@@billybubba5251 seriously full bridge IS mainstream and HAS been for DECADES! Watch the video and he give about a half dozen examples....or are yoy intimidated by those of us that actually understand all aspects of most amplifiers and can repair them on demand?
@@billybubba5251 dude you didn’t even watch the video....are you saying JL slash and alpine MRP(both FULL BRIDGE IDIOT)...the two best selling amps ever are not mainstream
@@billybubba5251 you are probably the guy that buy a $100 Walmart amp and actually believes it will push 2500w. You really sound that idiotic. Full bridge amps have been and are mainstream. One example today is taramps. If they aren't mainstream then how come you can find them everywhere? Powerus amps are an example of a company that isn't mainstream. Matter of fact there are a lot of mainstream companies that actually do make full bridge amps
Great video more people need to learn this stuff
You forgot more than I ever learned about that awesome video
Excellent video Sam!
So as far as voltage goes, you saying I don't need to run crazy amounts of high voltage to the full bridge?
Is it fine with steady voltage around 14.4 that doesn't dip so low with a good high output alt?
full bridge is the future! great video
It's on a after market head unit I am runnin my amp without the remote wire even in it I must have got solder somewhere on the power supply now it's running the amp as soon as it gets power and ground connected please some advice thank you for your help
Great video as always barevids!
When I hear full bridge I think differential amplifier. Also often called balanced in the headphone world.
Half bridge is what I call single ended.
Best explanation by far on TH-cam! Love your videos 👍😁💯💨💨💨💨
I dont understand why anyone would give this a thumbs down. It facts, knowledge. Guess always going to be hand full of haters who think they know better. Thank you for the awsome videos keep up the awsome work
I truly enjoy your videos!
So since full bridge amplifiers work in push pull does this mean they have the same characteristic as class A?
Impressive assessment. Thank you!
I connected my 5ch amp to a speaker to test. Problem is I connected to - on ch2 and - on the sub channel. It started smoking but when I took it apart it looked fine. Why would it smoke combining class a/b negative and class dcnegatibe to one 50w speaker?
I appreciate ya explaining this. I hear so much bad about full bridge, apparently they do not know what they are talking about. Which salt is majority of people in car audio. Thank you for clarification
is there any impact on teh amps efficiency?
Excellent video as always!!!
awesome knowledge drop friend! trying to access video of amp that burnt to a crisp but it won't play 🤔
It's back on
@@barevids we want more videos of your dd audio 9915s
Awesome vid! I was searching for this difference a few days ago. your explanation is the best in my opinion... Which one is better for subwoofer sound quality-wise from your experience?
Neither, fullbridge and half-bridge make no difference in terms of "subwoofer" abiity or sound quality, as I explained here. It's just whether there's one output or two in push pull.
@@barevids @barevids but dampening factor on the amp and signal to noise ratio specs on amps does change the quaility of sound a amplifier makes isnt this why purist of big ol halfbridge amp guys prefer those 2 feet long korean amps? Also isnt the full bridge design much more rougher dirty signal to the voice coil? Thats the biggest complaint about fullbridge amps ppl call them dirty power can u explain the term dirty power and why brazillian amps have a reputation for being "dirty" power.
@@joshholden8561 snr on smart 3 is 90 and bass 8k is 95.. what numbers are desired?
@@notyobiz6207 100 or better is prefered
@@joshholden8561 You did watch the full bridge amps were what someone like JL Audio and the legendary JBL Crown amp used. Those things were magnificent, the JL Slash amps are legendary. Those are arguably much better sounding than any half bridge he had shown.
I have a power acoustic vertigo 10k and I was on my way home and it started smoking but still working so I shut it off and took it out opened it up and the board ground was burnt in two and melted any ideas on wat happened
How do we measure half bridge amplifier output watts
Thanks this cleared up a lot of things for me
Very good explanation i would test it but my Ground Zero GZTA-2155x stay in protection mode when turned on
Is it the same for class AB? I was going to try and BTL a multi channel receiver, but after thinking about it, I thought that because they have some sine wave overlap being class AB, I would worry that 1 channel would feed a high voltage into the other channel. EG in your example of +45v & -45v, wouldn't sending +45v into channel 2 cause magic smoke? Or is the speaker load enough for it to absorb the energy so that there is no issue?
Basically I bought a powerful receiver and I was going to build a unbalanced to balanced converter, sending non-inverted to channel 1 and inverted to channel 2, all I have to worry about is if the speaker negative terminal is ground, which you can test by testing continuity between them all
I actually killed a receiver once, it was hooked up to a pair of speakers and we were about to hook up a power amp to them, the speakers were connected with banana plugs and the + wire of the power amp (that was turned on with no signal) touched the + of the speaker with the receiver still attached (with no signal playing) and poof, roasted the receiver. Totally baffled me, they both should have had 0v on the + line because they both had no signal
One thing I’ve been wondering in regards to this topic: a half bridge amp has a subsonic filter while a full bridge doesn’t, so is it even needed at all?
What? Being half or full bridge makes no difference to it having ssf or not, that just depends how the pre-amp has been designed. All the Brazilians have subsonic filter but it's labeled up as hpf since it has a much higher range.
@@barevids Ah okay, didn’t know it was labeled differently.
many brazilian fullbridge is full range operation, that mean his using a high pass filter, actually just a same thing, cut a lower frequency. but taramps bass line is sub amp or low frequency amp, same as most half bridge monoblock. just for subwoofers. taramps bass line have a subsonic filter ☑️
@@MannuhFestIt yeah my full bridged deaf bonce amp says hpf instead of subsonic. I learned that also 🤣🤣🤣
Thank you for this. Learn something new
Great video my guy!
The question I always hear is that they sound different, and don't play as low I have had 2 smart 3ks @ .5 each on my setup did a 153.5 and then I tried an ampere 7500 (wired at 1 and did a 152.5) the smarts were 1db louder but the lows honestly seemed a little bit better from the ampere, but then I then switched to a SFB 13.5k which got me from a 153.5 to a 155 at 35hz and the lows feel pretty strong from that amp but I'm guessing its because of the amp being much larger in power, but does the crossover affect the lows lets say like 30hz and below on fullbridge and you need a bigger amp to compensate for the crossover falling off or is it something else
You just need to set the filters correctly. On the Brazilian design amps all knobs should be at zero other than the level, and you want an active LPF on the head unit or DSP set to 55-65hz 24db.
@@billybubba5251 funny thing is that both the fullbridge definitely were more efficient to I didn't drop voltage as hard but was louder with both of the setups
@@billybubba5251 So you are saying Brazilian amps don't play low frequency well?
Had a question for you about my sd8800 .1 I recently hooked it up I stepped on the remote wire and it broke the remote input inside the amp the solder broke so i resoldered it and now it comes on as soon as I plug in the ground and power without the remote wire in it so I have to take out either the ground or power to turn it off now is this ok to run my amp like this or what should I do I dont even know how to fix amps and my warranty already expired on the amp let me know what you think please and thank you
you will have accidently made a solder bridge from +12 terminal to the remote terminal when you attempted soldering it
@@barevids will it be ok
@@barevids hate to bother you, do you think I can continue to run the amp like this without having any issues as long as i unplug the power everytime I am finished listening to the sytem
Get it fixed properly
@@barevids ok thank you very much your the man
Why does my Soundigital 4k Evo have only one input (left) instead of left and right inputs like other full bridge amps?
Because it's a mono amp. Mono amps only need one input. Most have 2 for absolutely no reason.
Interesting! I now understand why strapping full bridge amps isn't a thing lol.
have to run one amp per coil then gain and phase match them
I like to have the on-board sub-sonic filter. How important is this for sub performance?
actually subsonic filter is just a samething with high pass filter, cut a lower frequency. doesn't add any performance on a sub. this filter just protect a sub from damaging from extreme lower frequency. just it
Do they bother with having a split rail supply for full bridge, since they don't need to? I guess it's only a centre tap on the transformer output to have this if it's needed for some reason.
All of the Brazilian full bridge ones use a single positive rail and a floating midpoint that's present on both speaker terminals at all times.
which one more better on power watts output ?
Mr Bare Vid, thank you for this particular video of full-bridge vs half-bridge amplifiers. Now I have to say this, I have i'll feelings towards the guy from EMF Audio. Who did a video somewhat like your video I just watched, explaing the difference between Brazilian and Korean amplifiers. Anyway, I had a problem with his video due to te fact that he was comparing two totally different amps. His amplifier has no High-Pass Filter and the Taramp has a High-Pass Filter. so he was comparing how the taramp was loosing voltage and his amp maintained voltage through it's frequency band. But I wonder why he didn't do a comparision between a bass half-bridge amp and bass full bridge amp, both with no High-Pass Filter. Thanks for your time.
His videos are nonsense, I recommend not taking any notice of them
What about the sound quality difference ive always heard about? Ive never ran taramps for example but i want one just been so unsure?
Would running a dsp help? Ive been told it wont do much cuz its the amps fault they sound bad
They sound "bad" because they have very basic on onboard crossovers usually crossed over at 90 hz. This allows some vocals through the subs. An inexpensive electronic crossover or dsp will quickly solve that problem. I absolutely love the sound of my Taramps... smooth, deep, crisp and no noise.
yep, thats correct.
@@barevids thanks for clarification for me
@@Widowmaker2828 thank you
@@billybubba5251 Full bridge is main steam gtfoh with that crap hell at slamology 80% of the whole show was running Taramps and is one if the best and fastest selling amps on the market hell the smart 5ks are taking the market by storm, because they redid the crossover section to meet our way of running these amps here in the US and they sound damn good, how about you go troll else where
Starting to make wonder if my newer Infinity is full-bridge. The K1000. Anyone know? I forgot to check before installing. Where it's installed is a pain to get to.
yep, fullbridge.
@@barevids Cool! Thanks Sam. Watching the reply now of the over-toasted Apocalypse... oh my
I think the high voltage thing just comes from the fact that there are high Ohm Versions of some fullbridge Amps out there, Taramps HD 4Ohm version for example, they need to provide higher voltages of course…
I love the video! But I have a question out of all Brazilian full bridge amps do you think the banda viking 8001 is a better built amp than the taramps bass 8k and the soundigital 8000.1d. I also would love to see which amp puts out the most RMS watts too! But keep dropping the great videos! Your a great teacher!
go watch big D wiz new video of the taramps shits crazy
@@NightshiftCustom I got 3 taramps smart3 bass 8k and a 4 channel taramp for mids and Highs. I know what they do but was just wondering which is the best
So what style amp do you prefer to run in your systems @Barevids
I believe he has been running a full bridge Taramps HD 10000. Check out some of his recent vids where he tests a news DD amp... He talks about it.
Is 4 gauge wire big enough for a 2000 watt full bridge?
Probably depending on your impedance rise. But use 50mm if you can.
So the wiring would be the same as wiring an half bridge amp just full bridge pulls less voltage?
So you can't wire , we'll use sfb 3000 , let's say two dual 4 ohm subs to one + and - for 1ohm load at 1,000 watts And then another same set to the other + and - for another 1,000 ????
So in a way Brazilian amps are already strapped?
Full bridge amps are the same as strapped half bridge amps.
Not all full bridge are Brazilian, and not all Brazilian are full bridge.
@@blakebrockhaus347 not all but the ones ppl use are 😂 #Taramps
People use alpine, JBL, JL and Rockford...
@@barevids I wish I had the money to run every single one of em. Are there any other brands in Taramps price range that are as good?
@@barevids also, I wish you fooled around with Lithium batteries 😂 everyone learns so much from your videos. Thank you 🙏
Sam what are your thought on incriminator amps , the good the bad the inbetween ?
What's better for sound quality?😊
He literally said there’s no difference
Do a review on the taramps chipeo 12000
You forgot to tell that most, if not all, bridgeable stereo amplifiers are two half-bridge amplifiers working in 180° phase shift, not accounting for differences in left and right channel, and when you bridge them you get a full-bridge amplifier.
These kinds of videos are why I got interested in car audio. I started out interested in Home theater, but home theater guys know nothing about how their systems actually work and get in arguments about cables and stupid snake oil shit that doesn't do anything.
Holy cow, had no idea the Alpine Mrp series was full bridge!
How does one get a hold of u for amp repairs ?
If you're in the UK, facebook.com/nsvaudio
Maybe I missed it, but would one full bridge 8k be more or less efficient than 2 4k half bridge amps strapped?
I think it wouldnt matter given everything else equal. But I'm not sure. Either it wont matter or full bridge would be better is my take away from it.
Where are you?? Hope everything is good brother basshead. Love your videos!!!
So are full bridge, more efficient?
@@Mr.boxxchevy typically yes
So what about multichannel amps that you can bridge channels together ....how is the extra power gained if the neg is just ground...I'm confused
You don't connect anything to ground. You connect the speaker across the two positives. In most amps, the second positive is actually labelled up as "-" and is out of phase at all times, which is a clever way to allow regular and bridged operation without the need of a mode switch.
Are SounDigital amps any good? They're very inexpensive.
Is frequency response affected? If so, how/why? You mentioned that sound is not affected but many people claim to notice a significant low end performance difference between the two designs. Can there be a valid reason for this? Thanks!
The Brazilian amps have a preamp section for their audio scene not americas so many cut into what we consider useable frequencies. Not all of them do this but whatever I run active so the amps filtering section doesn’t matter to me
The difference in sound comes from the pre-amp section and people not knowing how to set it for Subwoofer application
If I used a full-bridge amplifier & set everything on pass & used an external processor to do all filtering, technically I shouldn't have any noticeable difference in my low end response VS. a half-bridge design? Also heard users mention that half-bridge amps are more "musical". Is there any reason why this may be? Or most likely another myth? Keep up the great work bro 👊🏼
@@aaronali8950 people who have money in on you buying halfbridge rebadges say things that make you buy them. i swear brands controlling/moderating forums where people talk about their gear is a big part of why the online car audio scene is a toxic cesspool of nuthuggery and bashing.
they only reason it may be more musical is if the filtering/preamp section is set to where it cuts into useable frequencies
people swear by jl slash and the old alpine mrpm2000 and many other amps alpine puts out. all fullbridge.
i think the big audiopipe amps with 2 1500s in the chassis sound fine thats the same as bridging 2 amps which is the same as a single fullbridge amp. fb vs hb has nothing to do with the sq of an amp there are other factors there
Can anyone help with a recommendation for a home stereo amp that's full bridge under $500, only need like 100watts RMS
Probably a plate amp off parts express or something
I have the feeling you were just done with the battle between the two so you came on youtube to explain it to everyone
full bridge amplifiers don't even need a negative rail, it's one of the benefits of them as it makes power supply design a bit easier
Are the CAB 45 amps full or half bridge?
cab 22 & 45 is half bridge. korean half bridge design with chines parts
Very thankful for this explanation! Every car audio contest I go to I get off hand comments about my Brazilian Taramps amplifiers being "dirty" and there is so much disinformation out there. They usually stop running their mouth after they get out of my truck though. 🤠 ( I do have one guy however who refuses to get in my truck and he is the loudest mouth...)
There is a video:
th-cam.com/video/TRvrQIXjEMs/w-d-xo.html
that was posted this week showing the Taramps MD8000.1 on an oscilloscope doing some wacky things. I would love to know what your thoughts are on this. Probably oscilloscope user-error. He has lots of problems especially not having enough voltage / amperage available for the amplifier and possibly too high of input preamp voltage. Lots of people watch him (19k subscribers) and I'm worried that he's going to spread even more disinformation because of user error on the Brazilian full bridge amplifier.
Thanks again for the explanations! 🔊💥🤪
I know there shouldn’t be any sound quality difference between the the 2 but I bought the Smart3k for running two 12’s at 1 ohm and when the amp quit working I traded it for a Orion XTR2500.1 and it was a noticeable difference in sound quality and speaker control. And the Orion makes less power ? Also noticed the Taramps got much hotter than the Orion amp.
You had the LPF filters turned up too high on the Taramps. All the knobs on those amps need to be at zero other than the gain/level.
@@barevids I actually used the Alpine head unit crossovers and EQ. I noticed when tuning the Taramps the pots were not very smooth. It was like nothing was happening while turning them and then they would jump. It was kinda difficult dialing them in, so thankfully the head unit being digital was a better option. Even on the Taramps 4X440 mids/highs amps when I was adjusting the gains, one channel was going in and out. These amps make great power, just not good on crossover and gain settings
So full bridge is less amp draw fr the same power??
@@jeezy5270 no, modern circuit design is less current draw than older designs. It just so happens that most new designs are full bridge.
Can you fix two hifonics amps?
Yes...
What happened the amp that went on fire. Missed the end of the stream and now the video is gone. Did you manage to get sound out of it?
Video is back on
hey sam is it worth paying double the amount for an korean like crescendo over an taramp
No
I finally understand what full bridge means...thank you
The first time I heard s full bridge amp (a sounddigital ) it most definitely had a less defined, sloppy sounding bass. Are you saying the difference in sound is solely due to the manufacturer quality and has nothing to do with the amp architecture? If that's the case then the whole belief of full bridge bass sounding bad compared to half bridge is totally a myth?
That's correct. The issue in sound actually comes from the pre-amp circuit design. Not whether they are fullbridge or not.
@@billybubba5251 if full bridge amps sound so great why isnt sundown running 4 sfb13500 instead of 4 salt 12k😂.
@@billybubba5251 if full bridged amps sound so bad.. then why does everybody love how my deaf bonce apocalypse 2k "full bridged Brazilian amp" sounds on my sub?
You need to give more credit to MMATS Pro Audio. If you knew your history, back in 1996, MMATS was the first to design, manufacture and deliver to the Car Audio market a Full-bridge Class d Subwoofer amplifier (D100HC). They went on to hold 3 titles over 3 years in the DB Drag race org, Loudest and Deathmatch!! Crossfire (CHung-lam, S. Korea) and Earthquake were the first to copy the topology and Earthquake being an almost direct reverse-engineered piece. The amps from Brazil are built with labor just about the cost of China and unfortunately can come to the USA without tariffs making it very difficult for MMATS to keep building in the USA....but they still do and have quite the following. first quarter 2022 should be very interesting for them.
what great info, and i love the way you say full :D
well, how you sometimes say full :D
Fool
How could I send you my amps i have 2 amps that needs repair
So a full bridge amp acts similar to how we get 240 volts at most residential housing here in the USA, two legs of power 180 degrees out phase. So if you took a sub and hooked one up to a power than connect the other side to the ground, would it operate and play at that single sides voltage? Obviously not the way your supposed to use the amp, but can you haha.
Cte split phase. Don't think the outputs have a "ground" reference so likley floating.
Sweet vid, I was just going to suggest this. Can you talk a bit about why a full bridge out put wires have current active without any sound? I've had my lines touch the chassis and had some big sparks flying. Also can you chassis mount a full bridge?
Hey man! This is due to the amps only running a single positive rail voltage. In order for for the speakers to "see" positive and negative voltage from only a positive rail, the amplifier generates a floating virtual ground for the speaker, which is exactly half rail voltage, so that the sine wave can swing down to ground and up to rail. So even with nothing playing, the terminals will still have high voltage on them referenced to vehicle ground. It's an easy way to kill these amps.
@@barevids Wooo I geek out when I get a response lol. Yes sir I was aware and also learned the hard way. Had my SFB 1500 die when it touched the amp chassis. I don't think that many people are aware of the dangers of a class D amp especially a full bridge. Maybe you can clarify if you haven't already. I'm trying to catch up on your vids,and a big thanks for what you do. Bass on my friend 🔊✌
@@barevids so not floating. It does ref to ground. Hmm
Hi Sam are you still well or have a tons of work? I hope you are having a good time and still well. Thanks for last teaching video 👍
best explanation ever
Hey man I’m looking for some education on what companies design their own amps I’ve been watching your videos and I know I few companies obviously the big guys JL RF Alpine kicker any others I should know about looking for good options! Assuming Phoenix gold has their own technology too?
No Phoenix gold has been sold off and is now generic Chinese shit.
@@barevids i ended up watching that Phoenix gold amp video you did! I have a 1200 watt prime not the new one with the c.l.e.a.n. Tech . Was looking to upgrade just not sure what to!
Great video and love all your info. Quick question. Someone once told me that Brazilian Amps are bad for voice coils. Is this true?
No, that couldn't be any more false.
@@billybubba5251 Bro what are you talking about if you're having problems with cone control thats your box not the amp, especially if your subs bottoming out your box is too big or your playing way below tuning
@@billybubba5251 Good for you buddy I run it and love em no problems and got good sound quality even put together 2 brands guys like you bash and show other guys like you that you can get damn good sound from amps and speakers that are so called cheap
@@billybubba5251 sorry buddy, I'm muting you from the channel. This is the third instance of plain misinformation you are spreading on a topic you know absolutely nothing about.
Love you videos man just wish they made more .5ohm stable full bridge amps
Why? They make 2 or 4 ohm ohm versions don’t always need to wire down to .5 in fact in some cases wiring you voice coils in series might work out better for you
But there are the new smart amps that will do .5 fine
I agree, why wire them down into the dirt? Just run them at the rated impedance like the manual says and be happy. If that's not enough power just go up to the next bigger amp. They go up to 30,000 watts. 😁
I got my subs kinda on a wim and they come out to .5 my current amp doesn't care but it means if I upgrade I'll need either 2 amps of another 1/2 bridge that can do it and I really like my subs maybe I'll recone them so I can get 1ohm idk
@@brendangardner7639 Oh, I gotcha. I had similar problems... I ordered dual .5 ohm subs and PSI sent me dual .7 ohms... It screwed me all up and I ended up having to buy a second Bass 30k. Expensive mistake but this is not a cheap hobby. 😁 On another note I have seen a few people run the Taramps Bass series down to .5 ohms. A guy near me does it and his truck absolutely slams. His name is Steve Green and he owns the Knob Koncepts company. His amps get pretty warm when he is hitting 160 db but so far he hasn't blown his Taramps. I myself have run my Taramps MD 8000.1 amps down to .7 ohms for over a month without any issues but I don't really recommend it. Better safe than sorry. 😊
@@brendangardner7639 so each dual 2?
that means you can also run at 2 ohm
Couldn’t a full bridge amp used as an inverter if you send a 60hz tone to the amp ?
Any amp can.