Can AV Receivers Handle 4 Ohm Speakers?

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Hellfire94

Audioholic Intern
Hello. I'm planning to get the M&K Sound M-5 Satellite speakers for my home theater. The only problem is that they're 4 ohm speakers. My current Wharfedale Diamond 220 speakers are 8 ohm and paired with the Denon avr-x2300w. I will sell that receiver and get a new one. Probably a 9.2ch avr. My only options are the Denon avr-x4500h and the Yamaha rx-a2080. Will those receivers be able to handle the M&K M-5 speakers in a 7.1 or 9.1 setup? The M-5 technical specs states that it needs 25 - 80 watts of power and the sensitivity is 84.5 dB. If I have the extra money then I might get the M-7 for the front LCR and the M-5 for my side and rear surrounds and perhaps front height if I want to do a 9.1 Dolby Atmos setup. There are no multichannel amplifiers available at my local store so I won't be able to use an external amp.
 
WaynePflughaupt

WaynePflughaupt

Audioholic Field Marshall
Unfortunately, with the advent of more and more amplifier channels in an AVR, the ability to drive difficult loads is greatly reduced. It’s highly doubtful that either of the AVRs you’re considering will be able to handle a full complement of M5s.

Your best bet would be to go with another speaker, or get one or two multichannel amplifiers. You don’t have to get the amps from a local store – there are no shortage of on-line sources.

Regards,
Wayne A. Pflughaupt
 
lovinthehd

lovinthehd

Seriously, I have no life.
Why are you getting those speakers particularly?
 
KEW

KEW

Audioholic Overlord
I just want to make the point that you don't have to go "all or none" on this. For example, I listen to stereo music 95% of the time that I "make my system work" (listening to standard TV without the type of emphasis on sound quality that many movies have - say news or a show like Seinfield at normal levels does not "make my system work). So for me, I'd almost always figure on adding a stereo amp for the R&L speakers. For 4 ohm surround speakers, I would probably get something like the Marantz below (which I consider roughly equivalent to the AVR's amp section) and run 3 or 4 speakers off of it and the others off of the actual AVR (it should be fine with 3 or 4 normal 4 ohm speakers)
 
H

Hellfire94

Audioholic Intern
Unfortunately, with the advent of more and more amplifier channels in an AVR, the ability to drive difficult loads is greatly reduced. It’s highly doubtful that either of the AVRs you’re considering will be able to handle a full complement of M5s.

Your best bet would be to go with another speaker, or get one or two multichannel amplifiers. You don’t have to get the amps from a local store – there are no shortage of on-line sources.

Regards,
Wayne A. Pflughaupt
I live in Fiji and it'll be too expensive to import an amplifier from an overseas online website. Most don't ship to Fiji. The cost would be over $1000 for the amp and the customs here charge a lot as well. Then there's the problem of the warranty and if I get a malfunctioning unit then there'll be even more hassle.
 
Auditor55

Auditor55

Audioholic Chief
I live in Fiji and it'll be too expensive to import an amplifier from an overseas online website. Most don't ship to Fiji. The cost would be over $1000 for the amp and the customs here charge a lot as well. Then there's the problem of the warranty and if I get a malfunctioning unit then there'll be even more hassle.
Go to the used market like Ebay for an external amp.
 
H

Hellfire94

Audioholic Intern
Why are you getting those speakers particularly?
I've been doing some research and M&K have a really good reputation for making good quality home cinema speakers. I can't afford their higher end speakers so I thought I'd settle for the M-5. I was also considering the Klipsch RP speakers but M&K speakers are said to sound like studio monitors and are perfect for movies.
 
lovinthehd

lovinthehd

Seriously, I have no life.
I've been doing some research and M&K have a really good reputation for making good quality home cinema speakers. I can't afford their higher end speakers so I thought I'd settle for the M-5. I was also considering the Klipsch RP speakers but M&K speakers are said to sound like studio monitors and are perfect for movies.
The M&K speakers from their original era do have a good reputation, generally though don't know about these particularly, are they from the "newer" MK Sound instead? I don't see much about them at all in a search. How much are they? Have you heard them? The sensitivity, low impedance and max rating of 80w for low sensitivity speakers isn't encouraging in any case....plus they're awfully small. How far away do you sit from the speakers and how loud do you want to play?
 
KEW

KEW

Audioholic Overlord
I've been doing some research and M&K have a really good reputation for making good quality home cinema speakers. I can't afford their higher end speakers so I thought I'd settle for the M-5. I was also considering the Klipsch RP speakers but M&K speakers are said to sound like studio monitors and are perfect for movies.
Why not just get an actual studio monitor like theJBL LSR 305's?
 
H

Hellfire94

Audioholic Intern
The M&K speakers from their original era do have a good reputation, generally though don't know about these particularly, are they from the "newer" MK Sound instead? I don't see much about them at all in a search. How much are they? Have you heard them? The sensitivity, low impedance and max rating of 80w for low sensitivity speakers isn't encouraging in any case....plus they're awfully small. How far away do you sit from the speakers and how loud do you want to play?
I think the M-5 speakers are from the old M&K. I have not heard them. I'm getting my relative to buy them from a home theater store in Australia. My relative will check if the speakers are working and stuff and then ship them to me. Each M-5 speaker costs AU$549. I'll probably start of with 2 or 3 first. Like I said, I would like the S150s but they're way too expensive. That's why I'm settling for the M-5s. But one thing that's bothering me is that I've seen a few videos on YouTube where people are using the LCR750 and 950 speakers with just 7.2 avrs. No external amp. Even one of the reviewers from AVForums told me that he was using a Marantz and Yamaha avr to power their reference M&K S150 Dolby Atmos setup without any external amp. He said he tested them for nearly a month and that the av receivers could handle the 4 ohm load without any issues. Those S150s are a beast compared to the M-5.
 
AcuDefTechGuy

AcuDefTechGuy

Audioholic Jedi
Hello. I'm planning to get the M&K Sound M-5 Satellite speakers for my home theater. The only problem is that they're 4 ohm speakers. My current Wharfedale Diamond 220 speakers are 8 ohm and paired with the Denon avr-x2300w. I will sell that receiver and get a new one. Probably a 9.2ch avr. My only options are the Denon avr-x4500h and the Yamaha rx-a2080.

Will those receivers be able to handle the M&K M-5 speakers in a 7.1 or 9.1 setup?
The answer is always, "It depends". :D

But I would say that for most cases, the Yamaha A2080 and Denon X4500 will be able to do just fine in 9.1 with 4-ohm speakers.

The salient fact is that in real life, your AVR will usually never be forced to handle ALL CHANNELS DRIVEN. In real life, the AVR is usually forced to handle 2CH (Front Left and Right) or 3CH (Front 3) DRIVEN. The rest of the Surrounds require significantly less power.

So bottom line is to look at the 2CH DRIVEN measurement of the AVR. In this case, both the Denon and Yamaha will have plenty of power.

For example, the Yamaha A2080 can output 260 Watts x 2CH in 4 ohms, which is plenty of power.
 
P

Paul Mohr

Audioholic Intern
If someone is going to buy your speakers and send them to you I assume this means you are not forced to get those particular speakers. Just for whatever reason you heard they were good and want them. The question is how were those speakers being driven at the time? They sound like fairly power hungry speakers, low ohm, low SPL rating ect. My guess is they were not being driven by the receivers you are limited to using and may not sound that great for you. Something to consider.

I would suggest having your relative find a different set speakers with better specs that would work with well with those receivers. There are a LOT of really good speakers on the market right now. It shouldn't be hard to find some that make you happy and will work well. I can't find any M-5 speakers from them, do you mean the M-50 on wall speakers? If you are spending 550 a speaker on them I honestly think you could get a better speaker for that kind of money, or less. Or keep your Wharfedale Diamond's. It's not like those are crappy speakers lol.
 

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