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I was home alone this weekend and decided to really crank the system. My Receiver is not in the best placement for ventilation (only about 1/2" all around). After about 30 minutes of listening with the receiver at 0db (which was probably well over 100db in the room) the red light came on. It was pretty hot to the touch. Called it a night after that!

Everything was fine the next day, the receiver came on with no problems. So, I think I will be in the market sometime this year for a good 3 channel power amp or 3 mono-blocks for the M80s and VP180. I think it may be asking a bit too much for the receiver to drive three 4 ohm loads and four six ohm loads.
And the neighbors?
Originally Posted By: RickF
And the neighbors?


Probably still ducking and covering under their furniture.
Originally Posted By: SRoode
I was home alone this weekend and decided to really crank the system. My Receiver is not in the best placement for ventilation (only about 1/2" all around). After about 30 minutes of listening with the receiver at 0db (which was probably well over 100db in the room) the red light came on. It was pretty hot to the touch. Called it a night after that!

Everything was fine the next day, the receiver came on with no problems. So, I think I will be in the market sometime this year for a good 3 channel power amp or 3 mono-blocks for the M80s and VP180. I think it may be asking a bit too much for the receiver to drive three 4 ohm loads and four six ohm loads.


This is not that surprising since you are running 3, 4 ohm speakers and if you have them crossed at 40hz they will dip a bit below 4 ohms according to the impedance graph. Under most listening conditions you will not have a problem, but if individuals are really looking to crank their systems with the 80's and 180 in a large room, an amp that is stable down to at least 4 ohms would be a good idea. You had that receiver working to hard under those conditions and now know its limits. Running the Denon "hot to the touch" is not good for the longevity of that device. It would have been interesting if you would have taken a temp reading after it shut down.
Although you did mention it’s not well ventilated in my experience Denon’s tend to clip/distort long before they overheat. I’d be careful doing that again.

I had a sparing match at with someone at AVS who blew the tweeters in both his M60s by overdriving his Denon and was blaming Axiom because they make weak speakers that can’t handle the power that they claim. Axiom even replaced his tweeter and he still had his undies in a bundle though I’m still not sure he understands how amp power works.
Turn it down, Steve.
http://www.audiogon.com/cgi-bin/cls.pl?ampsmult&1282675373&/Krell-250a/3-

in my opinion best value at the moment........500WX3 at 4ohm.

Even though John will not agree blush
JohnK will be reaching for the bottle of antacids after reading that dakkon. smile
Originally Posted By: JohnK
Turn it down, Steve.


What?
Originally Posted By: RickF
And the neighbors?


Huh?
Originally Posted By: Dr.House
It would have been interesting if you would have taken a temp reading after it shut down.


If I knew it was going to happen, I would have had my infrared gun ready. Unfortunately, it was up on the top floor in the master bath...

Don't ask.
Or if you were a "Chef" you could use the finger poke test....soft>rare....little bit firm>med well....sets finger on fire>call fire dep't.
Originally Posted By: SRoode
Originally Posted By: JohnK
Turn it down, Steve.


What?


I'm fairly sure he was referring to the volume.... wink
Posted By: Anonymous Re: Finally Did It! Actually Tripped a Denon AVR-3806 - 07/27/10 04:57 AM
Originally Posted By: dakkon
http://www.audiogon.com/cgi-bin/cls.pl?ampsmult&1282675373&/Krell-250a/3-

in my opinion best value at the moment........500WX3 at 4ohm.

Even though John will not agree blush



There is an A1400-8 listed for less though...

http://www.audiogon.com/cgi-bin/cls.pl?ampsmult&1284481129&/Axiom-A1400-8-Digital-Amplifie
Oh, hey, we know that guy. I wonder why he's selling it. I would buy it if I had the cash.
Don't worry Steve, we've all (well... all of us whom like to partay smile ) been there. Recievers are remarkable devices that, all things considered, are in some cases over-achievers. And Denons are one of the top reciever brands on the market. Still, when really pushed you will find it has its limits.

When I first got my Denon and would throw down extended high level listening sessions, my Cerwin Vega towers (almost exclusively the right side) would blow the built-in fuse. Now that I have towers without fuses (at least, I don't think my M80's have fuses???) I've shut down the Denon once, the Sherwood Newcastle once, but never the Emotiva (due to loud volume playback).

Anytime the Emotiva shut down on me it was the exact opposite, it would shut down when I was switching the reciever over from like the CD player to the DVD player. During that split second when there wasn't any signal going to the amp at all, that's when it would trip off for some unknown reason? Anyhow, during high volume boogy down parties, my XPA-3 would stay relatively cool (when placing my hand on it the top would be very warm, but not what I would consider hot) compared to the recievers when they went into protect mode. And just to clarify, I have TONS of ventilation room in both my reciever shelf and my amp shelf.

So I feel as if you are on the right track. Sure 'turn it down' is a viable option to solve your dilema. But if you're like me the peace of mind in not having to worry about setting an egg timer when your really want to jam so's ya know when to turn it back down again is worth the price of admission into the world of separates.

You won't hear any differences at regular volume than you did with your Denon. But once you get up to where the Denon was near or at its power limits, an external amp with more juice will play cleaner since it won't be adding distortion or clipping. You may only play it that loud a couple of times period, but if/when you do, that will be the only time you'd be able to tell a difference in audio quality.

So basically its like what (as I remember it anyway) Wid described purchasing separates as... An insurance policy. Maybe 99% of the time you wouldn't even have needed that extra capacity (or unused headroom as John puts it) that a beefy amp has. But that 1 day when you're all by yourself and you've got a wild hair up your ass to see just how many dishes you can get your Axioms to dump out of the kitchen cabinets... You can push your external amps to drive your system louder and longer than the mighty Denon could ever hope to do.

Oh and I wasn't trying in any way to plug Emotiva there, just mentioning the amp I went with. And good ol Axiom man such as yourself should have an A1400-8 or two (I know how you like duals wink ) kicking around in your HT!


laugh
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