What You NEED To Know About Speaker Impedance! | Series vs Parallel, Ohms, & Amplifier Matching

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What is speaker impedance? Why is speaker impedance important? How do you calculate speaker impedance in series and parallel? In this video, I'll answer these questions so that you can properly match your speakers and amplifier.
Speaker Impedance Calculator: geoffthegreygeek.com/calculat...
Speaker Specifications Guide: audiouniversityonline.com/spe...
Choosing The Right Speakers: audiouniversityonline.com/cho...
Choosing The Right Amplifier: audiouniversityonline.com/cho...
0:00 - What Is Speaker Impedance?
0:31 - Why Is Speaker Impedance Important?
1:55 - How To Calculate Speaker Impedance (Series vs Parallel)
3:59 - Choosing The Right Speakers & Amplifier
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22 июл 2024

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Комментарии : 83

@nickl2852 Год назад

I was not expecting such a professional tutorial from someone who looks so young. Crystal clear and concise. Excellent job, you have earned my subscription on this video alone simply because I came seeking knowledge and left feeling like I attended a lecture I paid for.

@MostlyTorso 2 года назад

I really needed this video. I've saved it in my favorites, so that when I get to church I can review it and make sure all our equipment (mainly, my guitar amp to cabinet) is hooked up correctly. THANKS! - Jason

@saadalessa 2 года назад

Same 🌹

@comicalguard2697 2 года назад

It is not recommended to mix speakers with different impedance on one channel. Bad bad idea. Always use identical speakers.

@VC27 Год назад

Reached that age when I derive a lot of pleasure in learning from much younger folks. Thank you very much!

@AudioUniversity Год назад

Thanks, veecee27!

@milos600f 2 года назад

Best videos about the topic on the site hands down.

@AudioUniversity 2 года назад

Thank you! I’m glad to hear that!

@drkeyz9286 2 года назад

Thank you very much,I'm a beginner in sound was wondering of you could make the same video on a live PA showing the series and parallel connections ,i get lost on the positive and negatives ,how do I know have done that correctly.

@klaymoon1 Год назад

Great video. When bi-amping, would speaker impedance change? I suppose depending on the speakers, but those where the crossovers are separated, I suppose the effective impedance can be as much as halved? Say a hard to drive 2.8 ohm speaker can be more easily driven by bi-amping?

@HawkFest Год назад

Your channel is underrated. For a noob like me with the "Audiophile" World, it's pure gold, thank you very much! Some amplifiers have banana plugs for both 8Ω and 4Ω. What if my speakers are 6Ω, should I plug them on the 4Ω or the 8Ω, or should I change my speakers? *suggestion* in regard to 1:30 - an example where the amplifier (or the speaker) could indeed get permanent damage would be nice, like a real world consideration beyond Ohm's law: with numbers (deltas or "comfort zone" above the nominal impedance+W). I guess that it would depend on how much voltage or current the different electronic parts are rated for? IDK, but can it be simply detected via the noise getting in as the volume rises up, just by hearing?... How can it actually happen in such context - no need to blow one of your own amp on camera for this, numbers would be sufficient (even though it could spice up your presentation 😉)?

@anthonyfigueroa9289 Год назад

I have a question about ohm matching for my guitar amp and my attenuator. I’m using a fender deville 4x10 amp, with 8 ohm speakers. I also have a tone king attenuator, which has the ability to adjust the omhs for the input coming from my amp and output going to the speakers. When I used a multimeter on the speakers, they read 2 ohms which makes me think the speakers are running in parallel 8/4=2. Since my attenuator output has 4,8, and 16 ohm settings, does that mean I need a 2 ohm setting to match the speakers properly? Or can I can get away with using the 4 ohm?

@vernav6756 2 года назад

My stereo amplifier has two sets of biding posts for each channel. The user manual says that it can drive a pair of 4 ohm speakers if only one set of the binding posts are being used. If I were to use both sets of binding posts, it can drive speakers that are between 8 ohm to 16 ohm. My speakers are rated at 4 ohm and they support bi-wiring. My question is that if I use both sets of the binding posts on my amplifier to bi-wire a pair of 4 ohm speakers, will it cause any issue/damage? Thanks. My amplifier's Power Output 200 W + 200 W (8 Ω) 400 W + 400 W (4 Ω) The speakers are rated at 4 ohm with 90db sensitivity.

@Pashok57 2 года назад

Need a help here anyway to prevent my concerns!:D I have two cabinets: Marshall 1922 (unit impedance: 8Ω mono, 16Ω stereo) and Marshall Code 412 (unit impedance: 8Ω ) Can I connect my Marshall MG100HGFX (speaker min. 4Ω load) by just simply plugging these two cabinets into this amp (8+8) ?)

@SuAmigoElilegal 5 месяцев назад

Questions pls, I have a pair of 12s power loud speakers each 4 ohms. The amp is 2000 peak. Now can i replace those speakers with 8 ohms each .and by bringing those speakers trough out and in to the other one , does that causes less ,more or no chances because they r individuals power speakers.

@bigdawg71leo Год назад

I have a question that I you can help me with.. I had 3 mtx FPR10 .35 OHM (they were sold in 3's). I sold 2. I just bought (2) 4ohm subs. Can the 3 be wire to work together?

@JaakkoAnttonen 2 года назад

Killer. Your videos are clear and to the point. I didn't know how series vs parallel impact total impedance. This is really helpful.

@AudioUniversity 2 года назад

Thanks, Jaakko! I’m glad you enjoyed it!

@hidewong Месяц назад

Hi there, thx for the knowledge sharing of this topic , I would like ask a question and get advise , if I got 6 ohm of passive loudspeaker, can I connect to the loudspeaker power amp which rated supported 8 ohms and 4 ohms ??? Thx

@michaelhering5941 2 месяца назад

I’m looking at having a 2x12 guitar amplifier cabinet built. The speakers I’m looking at are 60 watt speakers and are available in various ohms. The amplifier I’ll be using is a 25 watt amp that defaults to 8 ohms, but is switchable to either 4 or 16 ohms. Question, is there an advantage or disadvantage to having the speakers wired in either parallel or serial? I was thinking of setting it up to run two 8 ohm speakers and setting the amp to 4 ohm.

@coreytalk9684 Год назад

Is it possible to calculate 2 speakers 4ohms each to match a 4ohms amp?.. sounds stupid but needed some advice.. wud I maybe add in additional speakers to meet the ohms rating on the amp?

@calisippweezy2848 Год назад

Best way to wire 2- dual 4ohms 10" cvx. 2ohms or 8ohms? Series or parallel on a Sundown SIA 2500d amp?

@user-wr4vp4mt7e 6 месяцев назад

Thanks!

@kosfriendly_3577 3 месяца назад

quick question, so if I have 2, 35 watt speakers @ 8ohm and run them in series. That means 70watts at 16ohms. Or is there another way to calculate watts is a series. trying to do home entertainment setup with an old stereo reciever.

@cachhomevideo1546 2 года назад

Thank you for this video

@AudioUniversity 2 года назад

Thanks for watching!

@bluntgane3518 Год назад

What if you have daul voice 4Ohm speaker with 2 channel amp?

@360Birdman 8 месяцев назад

🎯 thank you

@besimvm7241 Год назад

I dont understand so much eng but i need to know who is the best for high bass parallel or series help

@mikga45 9 месяцев назад

If 2 speaker on one channel and the first is a midrange 240 watt woofer thats 6.5 inches. Wired in series it is 8 ohms with no capacitor added. The second speaker is a 3" tweeter at 80 watts at wired off of speaker one in parallel with a capacitor of 2.2 uf at 250 volts. Tweeter is rated from 4 to 8 ohms. What will the impedence be and the total wattage per that channel.

@VinylsFinal 3 дня назад

Hello, I enjoyed your video. Thank you, but i still seek your guidance. I have 4 JBL Control 1 Pro speakers. All 4 are rated 4ohms. My amplifier requires 8ohms speakers. I want all 4 of my JBLs to be controlled at the same time by my amplifier. What is the best way you recommend I cannot these 4 JBL Control 1 Pro speakers? Appreciate your guidance. Thanks.

@carrow2250 2 месяца назад

So I’m running a 4-channel amp with two sets of coaxial speakers in parallel but my amp says it can run 100w RMS @ 4-ohm or 2ohm. I should still be ok, right?

@semschaapherder7351 Месяц назад

Hello, what happens with the power usage, if i connect 2x 4ohm of 100W to get a 2 ohm resistance what happens with the wattage?

@ratonlucho Год назад

Can I pair a 50watt speaker with a 75 one? an the capacity would just add? 125?

@alankwellsmsmba Год назад

My question is the effects of a crossover. I have 4 bookshelf speakers I wish to connect in series ( a stereo pair of two each). How will the crossovers affect the setup?

@Shaun.Stephens Месяц назад

I want to know that too. I already knew the basic concepts in this video (it hardly needs a 4 minute video for that).

@growlith6969 Год назад

I would really like to know the science behind why impedance halves itself when speakers are wired in parallel.

@AndrewMellor-darkphoton 7 месяцев назад

It's easier to go through two wires in parallel.

@PampostReturning 2 года назад

Thank you 💖

@AudioUniversity 2 года назад

Thanks for watching!

@angelofulladosa2624 2 месяца назад

I have four 6 1/2 PRV 8ohm speakers, and 1 , 2 ohm amo how would i wire this

@GrimeyyBandit Год назад

As long as I’m in the correct range do I want a higher or lower impedence

@keerthivasanmanu 2 года назад

Thank you

@AudioUniversity 2 года назад

Glad you enjoyed it!

@jdaudiophaltan9101 2 года назад

hay... i have 4 high frequency drivers which haves 8 ohms impedance each.... so i wanted to run all of them on 4 ohms... how it can wired?? pls reply

@truthseeker630 2 года назад

You can wire the 4 in parallel, which brings the total impedance to 2 ohms, then add a 2-ohm power resistor in series to bring the total impedance to 4 ohms. The 4-ohm amp should have a little range, and if so maybe a certain combination can work to give a close value to the 4 ohms, without adding any power resistor.

@YourHaloCreations 2 года назад

So, how would one calculate the power required to drive a load with speakers that vary in nominal impedance, like the example with the 4-ohm & 8-ohm speaker in parallel?

@Trotter2320 Год назад

There is a formula in electronics called the product over the sum for parallel circuits. The product meaning multiplying and the sum meaning adding. So if you have two different ohmic values involving two different speakers in parallel such as combining a 4 ohm speaker with an 8 ohm speaker for the amp output load the total is derived by multiplying 4 x 8 divided by 4 + 8 which equals 2.67 ohms. So 32 ohms divided by 12 ohms equals 2.67 ohms. Another rule of thumb is that in this situation the total ohmic load will always be less than the smallest ohmic value in the equation so 2.67 ohms is less than 4 ohms.

@YourHaloCreations Год назад

@@Trotter2320thanks!

@MrBurakOzel 2 года назад

I thought you'd talk about the sound difference between in-serial and parallel setups. Or is it just no difference?

@AudioUniversity 2 года назад

I’ve not noticed a difference in sound quality. However, I’ll admit that I don’t use parallel connections very often. Most often, I’ll be working with or designing a system that has a few cabinets in parallel.

@arnask7071 11 месяцев назад

Hello, what happens if I run 16ohm speakers on an 4-8ohm rated amplifier? Does it mean that the speakers will receive less power from the amp in comparison, or are there other acoustical issues? Thanks

@Iamhungryforribeye 9 месяцев назад

What little I know is that it would receive less power than what the amp is rated at and it is ok but never go with a speaker or combination of speakers that would reduce the impedance load to below the amplifier’s minimum impedance.

@wally7856 3 месяца назад

You can always go higher then rated on a solid state (modern) amplifier (tube amplifiers you cannot). You would get 1/2 the power then a 8 ohm speaker and 1/4 the power going to a 4 ohm speaker.

@sebzjunior8965 2 года назад

Awesome video bro.. good tutorial but I just wish I could have such equipments which I do love a lot..

@AudioUniversity 2 года назад

Thanks!

@joselitogarcia1337 8 месяцев назад

Hi, does the amplifier impedance rating divided in left and right channel? I have an 8ohms rating amplifier and two 8ohms speaker. If i wire one to the right channel and another to left, will the speaker become 4ohms?

@wally7856 3 месяца назад

No, the amplifier rating is for each channel separately.

@joselitogarcia1337 3 месяца назад

Thanks!

@dewaynejay1032 9 месяцев назад

I have a 4ohm and 8ohm speaker can I run them in parallel? I have a 2 channel amplifier the speakers are 6.5

@Steezy76 9 месяцев назад

I have run 4ohm and 8ohm speakers in parallel (2.76 ohms) on my vintage pioneer sx1080 stereo for years without issue. The speaker output heatsinks get pretty warm so it does put strain on it being rated for 4 to 8 ohms. This only happens at extreme volume at power protect engaging levels. If you have enough high quality power it should be fine but ultimately not recommended. I just got a Hitachi sr2004 which is way more powerful but have decided to wire my speakers in series (12ohms) the Hitachi has a range of 4 to 16ohms. Now as for what order your speakers should be in. 4ohm before 8ohm firstly but, if you cut the 4ohm speakers power rating in half and it is lower than the power rating of the 8ohm speaker, you will then get better sound running the 8ohm speaker then 4ohm. Hope this helps 😁

@Shrek_Holmes 2 года назад

I think the first equation you showed at 3:51 is wrong but you corrected it in the next slide

@AudioUniversity 2 года назад

Thanks. Good catch!

@jimmychua6529 2 года назад

If I have 2 speakers of 4 ohms of 100watts if I connect in series it will became 8 ohms and what will be the wattage it will be 100watts or 200 watts

@y0ni0 Год назад

And did you found your answer? Cause that's almost the same question I have. What happens to the amount of watts depending on parallel or series connection?

@AudioUniversity Год назад

The total power handling capacity of the circuit will increase with multiple speakers. To harness that power, you’ll need an amp powerful enough to provide it. The power capacity of each speaker will remain the same, but the impedance will have an effect on the power rating of the amplifier.

@jairomorales7951 2 года назад

Most people use parallel to protect the amp and is better because each device receives the same amount of current but in total need least Current from the amp.

@ArunKumar-bg8zb 5 месяцев назад

2 speaker connected series, each speaker watts 300 So, what is the total wattage?

@wildbillo68 Год назад

My brain don't work so well after Chemo so...can anyone help me with some old 15" Tube speakers that have different Olms ??? Please..? I have one that is 6 Olms and one that is 4 Olms what should I do? I have a Sansui AU-217 Amplifier...Rated 4 olms to 16 Olms I think... As of now I have (2) 8 olms speakers runnin parallel on each channel so that is ok....but wanna try the old tube speakers ..see how they run on it hahaha

@aayushrai6021 2 года назад

Basically add them simply like you do with any other resistance in your physics class !

@lakshitharathnayake6893 Год назад

❤️❤️👍👍❤️❤️

@amosuragi 6 месяцев назад

How to connect 2 amplifiers 350+250, 1 mixture 4 speakers 120*4=480,2 drive units 6 micks

@yuseffnehru8612 Год назад

☺️

@CrackDaniels 4 месяца назад

why would a 4ohm and 8ohm in parallel be 2.7 ohms instead of 3 ohms?

@wally7856 3 месяца назад

For resistance (R) in parallel the formula is as follows: 1/R=1/r1+1/r2+1/r3+ ... +1/rn So you get 1/R = 1/r1+1/r2 1/R = 1/4 ohms+1/8 ohms 1/R = 0.375 ohms R = 2.7 ohms

@Trotter2320 2 месяца назад

Or you could use the “product over the sum” method meaning multiply 4 x 8 = 32 then divide that amount by the sum meaning add the two values together (4 + 8 = 12) which would equal 2.66666 and after rounding up would be 2.7 ohms. Btw, when using this method you can already know that the result will be lower than the lowest ohmic value.

@wally7856 2 месяца назад

@@Trotter2320 I've been doing these calculations for decades and never even knew that method (product over sum) existed. Totally makes sense knowing math and fractions but I never put the 2 and 2 together. That is waaay faster (especially with just pencil and paper which is my preferred method of doing math, calculators is for sissies). Thanks for sharing that.

@Trotter2320 2 месяца назад

@@wally7856Thanks. Glad it was helpful.