Understanding Speaker Impedance and Speaker Switches
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- เผยแพร่เมื่อ 4 มิ.ย. 2024
- This video explains how speaker impedance matters, especially when connecting multiple speakers to your HiFi amp. It also demonstrates how speaker selector switches protect your amp from low impedance.
For more details on this and more articles on connecting multiple speakers, please see my website: geoffthegreygeek.com/category/... Questions are generally answered from the webpage only. - วิทยาศาสตร์และเทคโนโลยี
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I spend a great deal of time updating and answering questions from the webpage. If you have a specific question, please read the relevant article on the webpage and post your question there. Rarely do I get to answer questions posted here in TH-cam, although others often help out. geoffthegreygeek.com/category/home-av/connecting-speakers/
Geoff. Here is what I sent you in an email like you asked. Please let me. Know if you received it. Maybe someone else can chime in if they know. You would think as long as I have been playing I would have ran I to this, but this is a first. here it is.
Hey Geoff.
I have a Bugera Vintage V22 Infinium. It is a 22 watt combo amp. On the back is a jack for connecting an extension cab. Where the jacks are for the extension speaker, and the jack, and plug for the speaker in the amp it states
"amplifier output 22watts
4 ohms minimum speaker impedance.
Jacks Paralleled".
(The speaker in the amp is 8 ohms)
Next to the jacks is a switch that has a setting for 4, 8, and 16 ohms.
The extension cab is an Egnater 1x12 and is 16 ohms. If I plug this in to the extension jack, what would I set the impedance switch to? I do not want to damage my amp.
You are the first person I have come across online who seems to know what they are talking about. I hope you can help me with this
dilemma, but I'm sure there are plenty of people on here that have an answer, but I would like to hear all opinions including the Grey haired geek.
Thank you in advance,
Assuming, the connection was done correct. Does multiple speakers connected to one channel affect amps? In other words, do you get the same output from the amp per speakers as you would if you connect one speaker to one channel?
Hi sir, thanks very much for the vdo, this one vdo gave me a clear picture of impedance,Hi I have a small doubt. please give your expertise, what will be the formula for connecting two speaker's of different impedance(say 1 speaker with 8ohms and other with 4ohm) in parallel... i know the calculation for series (10+4=14 ohms),I am planning to build a diy soundbar with 2.0 amplifier board (stereo left n right channel), and I want to add 1 woofer to the amp,(thereby total 3 speaker for a two channel amp).
How i can connect 8 speakers 8 ohm to 1 ohm amplifier (Taramp)
page not found.
If your speakers are rated at 8 ohms, that means impedance will vary from 16ohm and during heavy, complex bass and orchestral music, it will sure drop down to 3.2 ohms. While 4 ohm speakers will drop down to 1, 2 or zero ohms and drain the current from your amplifier severe. The more high current you provide, the more headroom you have, also with high current amplifier you prevent amp and speakers from potential damage - clipping! After trying 4, 6 and 8 ohm speakers, I realized minimum power amp is 100watts per channel into 8 ohms and close to 200watt into 4 ohm, to drive most speakers. As for 4 ohm speakers or connecting 2 pairs of speakers, they require at least 150watt/ch high current amplifier to drive them well. For a year I drove Dynaudio 4 ohm floorstander with 75w/ch high current amp and that power wasn't enough to take control of the bass and soundstage (stereo mode). It was a torture like driving heavy Land Rover with a 75 horse power engine. While minimum requirements for such a beast is 120hp. Hope this helps someone :)
This is hands down the best video for information on impedance. I'm no expert, but thanks to this I was able to wire my subs down to a safe 2 Ohm load.
Learning something new is a wonderful thing, thank you Geoff!
HURRAH...that was the best explanation I've seen so far...now I completely get it..!!!
Thank you 😃👍
Basically, you never want your Ohm rating to be lower than what your amp lists, because less resistance means there is more current going through the amp, and the amp can literally be fried. Too high of an impedance, and your volume will be too low because there is too much resistance.
This video is intended to make one understand what impedance you should be looking for when connecting speakers to an amp, but it doesn't explain the concept of impedance itself.
Oh wow so I really did fry my amp! And I thought the higher the number the better! I was running 16 ohm to my monoblock 4-8ohm amp! Thanks now I know
Hi Geoff, just subscribed. Thank you for all your help! I can now connect 2 speakers to each amp, 4 in total to the stereo's two amps.
disastrous for the poor amp! That made me laugh! Thanks for such a great video, may it live long on TH-cam.
O U T S T A N D I N G ! Excellent info on speaker impedance without getting overly technical. Most obliged G3 sir. Really appreciate your altruistic labor here. All the best.
Best speakers connection tutorial on youtube, congrats!
Awesome video, impedance explained in the simplest way possible.
Very clear and instructive!
An impedance assigned to loudspeakers is essentially a "nominal" impedance. Impedance varies with frequency so there is an "impedance curve" for every loudspeaker or speaker system. For instance my AR-3a speakers have a nominal impedance of 4 ohms, however this speaker's impedance varies from a low of 2.5 ohms at 900 Hz to 22 ohms at about 45 Hz with various settings of the speaker's mid-range and tweeter controls. The overall impedance at most frequencies is close to 4 ohms.
This is something you should know, but in general this video gives excellent advice on how to hook up speakers, but there will be some speakers that deviate from this simple solution.
yea that is the kind of information you would expect to hear given the title.
Thank you. Currently getting to install a whole home audio setup
i want to do the same, but its a little bit confusing at first, trying to get the right gear!
this is excellent! very good video. every day i learn always something useful congratulations and thanks!
Good and simple explanation - gongrats from an electrical Engineer !!!
If you think this video did a good job explaining anything, you're no electrical engineer. You need to ask whatever school you went to for a refund.
Excellently done video the only thing I would add is does going on 4 ohms versus 8 ohms change the actual volume sound
Thanks for this video its very educational, like me who want to know more about speaker matching to amplifier.
thanks alot make more videos!!!!
These loads turned out to be very much the opposite of what thought! This is awesome. Now I can build a bigger and better tower speaker!!!
very helpful indeed! Thank you for your time and sharing this.
Jeff good lookin out and great source for a start to understanding wiring speakers correctly so I can tweak the system correct and most of not blowing amp..I will be in touch after I write down all my ohms on back of my gear
Very clear explanations, thank you, ,,
What I really learnt was how not to go wrong while matching the speakers with the amplifier. But what I wish to know is whether using multiple speakers in parallel or series make any difference in audio quality.
Very clear, now I understand! Thank you much!
Thanks for all your great help Geoff! Jesus Bless Your Life my Friend.👋👋👍✌
im an arsehat coz im old now and sorta thought i knew wat i was doing and ive just learnt i know nothing and need a lot more learning - 'coz optimizing mean beats is funtimes.
thanx for the upload.
Geoff, THX for this very helpful Video. My question is : Does wiring 2 pairs of Bookshelf speakers in Series affect the sound quality ?
thankyou so much. I needed this. more blessings to you
Hi, great video... I have a question... I have an integrated stereo amp with 4-8 ohm and 120 watts and a Bose 301 speaker with 8 ohm impedance at minimum 10 watts and maximum 70 watts. Is the best way to just connect the speaker to one channel on my amp, or is there a way to connect it to both channels to get more out of the speaker?
"now the fun starts" love this part of the video
thanks for this
Sir, thanks it's help me a lot more , waiting for your next tutorial about transformer series & paralal connection .
❤️ From INDIA 🙏
Awesome info thank you so much.
This was amazing. Thank you.
Thank very much for this video clip.now i understance the function of this impedance to the amp n speaker
I see! Thank you!
This makes so much sense thank you so much
I have a 2x12 cabinet and the speakers in the cab are both 8ohm speakers, do I use a head that is 16 ohms or 8ohms? not sure if they are in series or parallel.
I really like your explenation thanks
Thanks for wonderful information.
I want to connect 8 ohms qty-12 speakers in my house. Can I? If possible what will be wiring configuration from speakers to an amplifier
Great video!
Great video. Thank you so much.
Your videos are awesome. I need your help today and I m sure that u r the one who can help me with. I have two speakers of 50W, 8 Ohm each. I want to make a woofer so how to wire these both speakers and what type of amplifier ( Power rating) I have to use. pls explain me about it.
thank you very well explained
thanks...im happy to know that...i thought that the amplifier only support the ohm that recommended..example 4-16ohm for both channel...this video show us that it divided for both channel 1 channel support 4-16ohm.. another channel also 4-16ohm...thank you for sharing
So i ordered 2 subs that came with the box and amp ... im trying to figure out how to wire the subs to the box theyre both 4ohms boss cx122.... i have a 30ft speaker wire how should i wire them?
Most understandable instructions ive watch
You can use a double pole double throw switch to change between two speakers series and parallel. I used a quadruple pole double throw switch on 3 12 volt batteries to switch easily between 36 volts to run an SMSL SA98E amplifier I have and 12 volts for other devices and/or charging. I unfortunately can't show you how to wire it in a youtube comment though.
Impedance (Z) is known as equivalent resistance value of a circuit. A speaker coil has three parameters like coil resistance, coil inductance and coil capacitance, usually known as R, L, C. Impedance (Z) is calculated as R+kL+1/(kC) where K=2*Pie*F (F=frequency & Pie=3.14), R is the coil resistance in ohm, L is inductance value in milli-Henry and C is capacitance value in micro-farad. The unit of Z is ohm. Be remember, standard values of speakers are 4, 8 or 16 ohm.
Here, Mr. Geoff clearly explained how we can obtain desired coil resistance with speaker having different coil resistance, like getting 4 ohm with 2 X 8 ohm speakers, or getting 4 ohm with 4 X 16 ohm speakers etc. to match desired value of output of amplifier.
Do you have a video I can watch? I would totally watch!
why its called impedance not normal resistance , why the change in names
@techmonster2632 because its in AC current
I repair amplifiers. This video is great for my business! Thanks!
Giblet535 me too, letr blo
This shit helped me within the first 2 minutes. Thank you.
And just like that, you became my spirit animal. Wow, thanks for this Geoff!
If I associate speakers with diferent impedance value, respecting the minimum impedance of amplifier, is ok?! For example: Associating a speaker midrange or even a woofer 4 Ohms with a tweeter 6 Ohms in a amplifier 4-16 Ohms is alright?! Thank You!
Hello my Sony davtz145 having 8 ohms amp and speakers also 8ohms,now I .want to increase 2 more spekars in rear channels can I increase?
best vid yet on youtube i have a 600 watt amp (( 4 - 16 ohms )) need to run 4 mid speakers and one 750 watt sub can do it now no need to buy a over priced amp again ,,
This vid is very helpful!
Very informative, im gonna forget in 5 mins but know I can come back and listen again
Hello, i have a 5 channel amplifier my front speakers are 5x7 4 ohm and rears 6x9 4 ohm they take 110w rms and my amplifier produces 110w x4@ 2ohm and only 50w x4 @4 ohm is there a way i could wire it to make the high speakers 2ohm or would this damage the speakers? I feel i am not delivering enough watts to my high speakers
Hi, I would need a little help. I have 2 hifi speakers with 2 speakers in each monitor. 1 x 2W 4ohms high, and 1 x 60W 8ohms bass speaker. The are connected in parallel. For me it would be pretty easy to calculate, that I need a 2 x 62W amplifier with 6ohms (I found a 6 to 18 ohms amplifier). But the thing is, that there is also a capacitor/condenser. The bass speaker was replaced by myself many years ago, but I would like to run it properly now and find a suitable amplifier. Any help would be appreciated :) Thank you, Pete
pls let me know ohms calculation on speakers do i have to consider crossover ohms also.pls advice as i am building a base cover 4ohms 5 speakers with 4 to 8 ohms crossover for each speaker. considering this pls advice my amplifier can handle 2 to 8 ohms , which way i should connect ?
(for home application) if we use an active subwoofer will it still draw power from the amplifier and still have to formulated first or just plug it in into a pairs of the socket (back L & R maybe) since it already have it own power source??
Am I able to use one 6 ohm and one 8 ohm speaker for one output (and the same for the other) of a 6 ohm minimum amp? If so, would I wire in series or parallel?
The back track music completes this video. Well done. What's the track?
thank u very much for making this video.....
thanks on this, very helpful on us beginners like me i understand very well. i have one question. if we install two 8 ohms speakers it says total of 4ohms. is there any possible way to make it 8ohms? or not.
a 4ohms resistor in series with the 4ohms, 2 x 4ohms = 8 ohms in series.
Thanks ....Very clear explanation
I had 2.1speaker,woffer-15w6ohms can I connect an extra woofer to it of 20w4ohms
Helped me.,,, Thank you
Sir, what will happen if you combine 2 channels of 4 ohms each (Left and Right of amplifier) to a 4 ohms speaker? Thanks!
brother @ I wanted to ask if in parallel you put 3 per channel no problem oh yes
Hello Sir , can I ask you if I can connect two different amplifiers to a single pair of speakers . One amplifier I am using for home theater , the other one for stereo music only . I have only 2 speakers and of course I will turned on only one speaker at the time . I am not interested in biwireing or biamping .
I have 6 and 16 ohms output speaker on my amplifier, how many ohms speaker should i use if I conneck 6 speakers per channel? Thank you & more power.
I would like too ask you about my project.
I'm working on my project to build tower speakers using :
1 pc soft dome tweeter 8 ohm
1 pc midrange 8 ohm
2 pcs 10 inch woofer 8 ohm
3 ways crossover system
For each speaker
My question is how to connect those 2 woofer so i they still have 8 ohm impedance as the tweeter and midrange driver.
Thanks a lot...
Hi sir, this is a grear video ever .just a question sir can we apply this to combine the 2 of the same kind home theater 5.1 speakers too? godbless u
Good notes,📝
Thanks Great video channel
Can you please explain about amp with 4 channels A, b output
if i wired my 8 ohms tweer with capacitor to my 8ohms woofer using parallel connection is it still consider as 8 ohms?
5:30 Will you need one transformer *per speaker* or you could use one for each pair?
-> I'm having a really tough time finding impedance matching transformers online, any tips?
Great solution. But while it talks about the impedance ..what about the watts? Suppose I need to connect 4ohm full range (15 watt) + 6 ohm (30 watt) tweeter to an amp which has 100 watt power and 6 ohm Minimum Load Impedance, per channel. Note: 2 speakers will be connected to a single channel (100 Watt/6 Ohm), so total 4 speakers(2 full/2 tweeters). So as per this video, I need to add one 6ohm resistor before connecting 2 speakers in parallel. But then should I also need to match the watts? Or should I go with the lesser watt resistor, say around (30 or 50 watts per channel).
Love your channel. everything easy to understand for the regular man. Q: I have a 100w x2 mini hifi amp that is rated for 4 to 16 ohm speakers. I have two 3ohm 300 watt Panasonic speakers, will the amp be ok if I connect the speakers to it?
It will, but only if you connect them in series. Then the impedance will be 3+3=6 Ohm. In parallel they would have 1,5 Ohm which is not in the range 4-16Ohm
omg this stuff makes my head spin
True that
Useful video 👍👍
I have a 4 Ohms Speaker and a 8 Ohms High-Freq. driver and A 8Ohms 300Wmax 2-way Crossover.. Can I setup with these 2 speakers or do I have to change it to 8-8 Ohms?
hello sir .. it is ok to add resistor to match the impedance ? because i have 800watts 4ohm speaker and i cant use my amplifier 8ohm load ....what resistor i need for my speaker to match the ampli?
In theory you could add a 4 ohm resistor, however in practice you will not find a 4 ohm resistor able to handle 800 watts of power. And if you did, the speaker would only get half the power that the amplifier supplies.
If you need to drive the speaker at its maximum, the better solution is to buy a commercial amplifier capable of working into 4 ohms or even 2 ohms.
Geoff
ok sir thanks ..
Can it be connected a 16 Ohms tweeter (with the filter capacitor) to the 4 Ohms full range driver? What would be any difference in sound? Is it safe for both tweeter and the full range driver? What the method should follow? Kindly explain? Thank you.
ty for this video
Hi, I have a vintage amp and my output is 16 ohms. I have a single woofer ( 16 ohm) and Tweeter (16 ohm) hooked up to the amp through a cross-over.
My tweeter is toast so I bought a new Tweeter from Pyle ( PH-391) but it is only 8 ohms. How do I wire this into my set up.
My cross-over has a 15 ohm and 33 ohm resistor along with a 3.0 uf Capacitor.
Do these new tweeters even need a cross-over ..I am confused. Any help appreciated.
So how this work does the chip detect the value of your speaker not to burn them as if I use a chip that works with 9 & 24V for 50W max & I use a lower speaker like 20W 4ohm I could potential burn the speaker at 24V amplifier
This was great. What about a 3 speaker system? Passive L, R & Base connected to a "two" amplifier system, i.s. amp with single L&R outs.
hi sir! I want the pormula how to compite frompower amp. to speaker wattage
Sir, Im from Philippines.
And i want to ask something. I have 300w amplifier and i want to buy 4 speakers..so in one speaker how many watts do i buy..
And i want to connect in parallel connections..
Thank you sir..
I'm using two pairs of speakers, 6 and 8 ohms connected in parallel series, what's the total impedance for that mix? is it okay?
i need help that I have 3ohm subwoofer and 8 ohm subwoofer but my amplifier is 6 ohm so what should i do? can i attached any one of them or i is harmful to amp? or which one is moor suit to my amp from both ?
Does using a speaker selector work in a live setting like a concert? I have passive speakers and I am running an issue with impedance.
Thanks you for the information . I have an idea how to use ohms...
What If I hook a pair of 6 Ohm (or 4/8 Ohm) satellite speakers in Parallel with a Cambridge Soundworks Ensemble ii module (which has 6 Ohm woofers)? There are only two sets of 5-way Binding posts for both speaker wire and to hook up to the amplifier. No speaker inputs.
Will I damage the amplifier, especially one rated for a load impedance of 2-8 Ohms?
one the two KEF 101 speakers has a crackle sound on one of the speakers, but I don't know if it is the tweeter or the board.
Could you assist/direct me in this matter? Thank you
But I still have one question:
I have a marshall mg100dfx turned in a head.. and this amp has 100w. At the loudspeaker output it only says (use minimum 4ohms) so my question is: I own a marshall 1936 2x12 in parallel so each speaker has 8ohms and 75w... Can I plug my mg100dfx in stereo (in only one speaker) with my joyo bluejay bantamp on another?
The higher resistence (8ohms) of the cabinet will low the voltage of 100w and I won't blow my 75w celestions? Thank you very much!!
Hello I have a set active speakers of 30 kohm each, I would like to buy a set of speaker cable. What is the matching impedance in this case for the cables?
thank you