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#307535 - 05/21/10 03:17 PM will my avr788 power the m80 and m60
2packer Offline
buff

Registered: 07/05/09
Posts: 56
Loc: Wisconsin
I currently have a Denon avr788. I think it's the same as the 1708 just a different model number based on what store was selling it.

Looking to get either a set of M80's or M60's. Wondering if that receiver is enough or will I need to upgrade?

my room is 22 x 26 and I was at merchman's home listening to his M80's and at about 8' away it was at 85db and was about 78ish at 16' back. His room is smaller so the measurement was from the adjoining open room to get an idea of what level I'll be listening to them at. Needs to be about that level due to the noise of my eliptical machine and the fan on it. Plus who exercises to music at low levels.

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#307545 - 05/21/10 04:17 PM Re: will my avr788 power the m80 and m60 [Re: 2packer]
jakewash Offline
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Registered: 12/26/03
Posts: 10415
Loc: Calgary, Alberta
It will with out a problem, but you may find if you want to listen louder than it is capable of going the internal amps might clip or distort the sound, but I wouldn't worry about till after you have bought the speakers, that little Denon will reach loud levels easily as the Axiom's you are looking at are very easy to drive.
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#307547 - 05/21/10 04:19 PM Re: will my avr788 power the m80 and m60 [Re: 2packer]
RickF Offline
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Registered: 02/26/05
Posts: 5210
Loc: Vero Beach, Florida
I'm not a Denon owner but from what I've read, that AVR should power the 60s or 80s without any issues. I've got an older H/K AVR635 that's rated at 75 watts and it will and has driven my 80s to some very loud levels for long periods of time without a hitch, although I do have a Rotel amp pre-outed from the AVR to power the 80s ... an option your Denon doesn't seem to have?
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#307551 - 05/21/10 04:47 PM Re: will my avr788 power the m80 and m60 [Re: RickF]
Adrian Offline
axiomite

Registered: 12/27/08
Posts: 6890
Loc: It's all about the location.
It doesn't look like the 788 has pre-outs, but as Rick and Jay stated, I doubt if you'll have any problems driving the M80s unless your listening level is beyond the capabilities of the amp(very loud).
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#307552 - 05/21/10 04:48 PM Re: will my avr788 power the m80 and m60 [Re: RickF]
SirQuack Offline
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Registered: 01/29/04
Posts: 13576
Loc: Iowa
not a problem, I've driven my 60's and 80's with Denon 2805 and Denon 3808 models with no issues to crazy loud levels.
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#307579 - 05/21/10 06:22 PM Re: will my avr788 power the m80 and m60 [Re: SirQuack]
2packer Offline
buff

Registered: 07/05/09
Posts: 56
Loc: Wisconsin
thanks for the help guys. I'm glad at this point I don't need to factor in the cost of a new avr if I go the M80 route.

Jakewash, I was reading the following thread.
http://www.axiomaudio.com/boards/ubbthreads.php?ubb=showflat&Number=177520&fpart=1

I see it's now a couple years old. Did you upgrade to the M80's? Think keeping the M22's on top the M60's is better or just go with the M80 alone?


Edited by 2packer (05/21/10 06:23 PM)

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#307584 - 05/21/10 06:37 PM Re: will my avr788 power the m80 and m60 [Re: 2packer]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7786
Loc: Canada
I took a quick look at the specs for the 788. You get 90w @ 8 Ohms and probably in the range of 140w @ 4 Ohms.

A quick check with a power calculator tells us that at 80db listening levels AND with 15db of headroom for dynamics, you will need a whopping 19w. At 85db you are looking at about 60w. Push that up to an ear damaging 90db and you will need as much as 160W, slightly beyond the capabilities of the 788 into 4 Ohms (M80s).

Note: this includes all the power you will need for dynamic peaks in your favourite classical music pieces. For the most part you will be using much less power, probably in the range of 2-20w.

The 788 should be just fine.
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#307593 - 05/21/10 06:56 PM Re: will my avr788 power the m80 and m60 [Re: fredk]
2packer Offline
buff

Registered: 07/05/09
Posts: 56
Loc: Wisconsin
That's a pretty cool calculator. I book marked it. Thanks fredk.

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#307597 - 05/21/10 07:58 PM Re: will my avr788 power the m80 and m60 [Re: 2packer]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7786
Loc: Canada
My pleasure. It does come in handy. The only thing to keep in mind is that it is meant for pro sound applications and does not take room gain into account. Its easy enough to adjust the headroom down by 5 db (so if you want 15db of headroom, put in 10)to account for room gain, you just have to remember to do it.
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Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!

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#307617 - 05/21/10 10:04 PM Re: will my avr788 power the m80 and m60 [Re: 2packer]
jakewash Offline
shareholder in the making

Registered: 12/26/03
Posts: 10415
Loc: Calgary, Alberta
 Originally Posted By: 2packer

Jakewash, I was reading the following thread.
http://www.axiomaudio.com/boards/ubbthreads.php?ubb=showflat&Number=177520&fpart=1

I see it's now a couple years old. Did you upgrade to the M80's? Think keeping the M22's on top the M60's is better or just go with the M80 alone?
I did upgrade to the M80s, the M22/60 combo is just too unstable for my liking as I have kids running around.


Here are a couple of pics of my current set up





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