well after about 8 months of use, denon avr 990 overheated and went into protection mode(after about 8 hrs with all 7 channels @ near ref. volume and then about 1-2hr @ ref. followed by 20 mins of +5-+10 above ref.vol. with all channel driven. crazy superbowl party or maybe it was that horrible 1/2 time show) ....which i was not able to reset...lost display on front panel and all sound..
unit has been sent in for repair. i have axiom epic 80 less sub(velo 15") plus 2 more QS 8` for front heights in a 4000-4500 cu ft room....i do like to turn it up above ref. usually +5 or so on weekends for short times never had a problem...but i did just add heights(back in dec 2010) from 5.1.So with these 2 additional channels should i look @ adding a 2 ch. poweramp for the m80`s?anybody else using a 2 ch. power amp and how did it effect your sound(2.1 music and 5.1,7.1 )?headroom?any input/advice would help...thanks in advance and sorry for the long post.

You're damaging your hearing with those absurdly loud volume levels that you described, and instead of taking the warning that the 990 gave you and turning it down a bit, you're looking for another amplifier?

Are you sure the amp overheated? I would have thought the Cops would have shut it down after....say.....3 hours?

Did you ever try to turn the receiver back after letting it cool when it went into protect mode?

You have a huge room which is up to 4500cu/ft. You are asking a lot of that receiver and I am not surprised you were able to shut it down. BTW if you are listening at reference level in that massive room, you won't have any headroom for dynamic peaks in Blu-ray movie soundstracks and are at risking of not only shutting down the receiver but also potentially clipping your speakers. Superbowl audio is not even demanding content.

In this huge room and these crazy volumes, you should definitely look at external amps and maybe for more than 2 ch. The typical contenders for relatively low cost amps are offerings from Emotiva (XPA2, XPA5) and Outlaw (monoblocks).
Enjoy your speakers wile you can cause pretty soon you won't be able to listen to them

yes i tried everything form unplugging unit,all cables removed,micro. reset and also network reset... nothing so unit sent in for repair/replacement
i think you may be right>>>> lack of headroom @ ref. may be the problem ..that and too many beers, in a larger room than this avr is designed for???unit was @ ref or below for superbowl itself,it was post game with some dvd concerts that done it...that and +5 or so above ref.....so will a 2 channel power amp do anything for headroom?? before i do any more damage to my hearing...
and keep in mind it is rare i do go above ref but @ ref i feel i am missing something(i should have paid the extra for the 4310 or 4810)

The 4310 or 4810 would have given you features. If you want power, you need an amp.

I would recommend getting at least a 2 channel amp or a pair of monoblocks for the M80's as bdpf suggested. If you have the VP180 I would also suggest that be used with an external amp.

The extra 10-20 watts wouldn't make any difference. You need an external amp at these kind of levels.

reference is when the dial would be around 0, sounds like your playing it beyond that limit into clipping.

Coming from someone that has lost a lot, I hope you seriously considered John's advice first.

Sure, I have an external amp, but I don't listen at the volumes you do.

I'm not trying to be melodramatic, and I'm not discrediting other people's opinions. But just as I would discourage a friend or family member to listen at the levels you are, I have a moral obligation to do the same to you.

It obviously your choice, but given the possible harm, it's one that merits some serious reconsideration.

Peace, buddy.

I like to crank things up, and you all know I like beer and wine, but dang I like to enjoy the game and my company. Maybe I'm just getting old.

"You're older than you've ever been, and now you're even older."

They Might Be Giants

crap I'm older than my last post...older.....older....older yet...super man please slow down the earth.

Superman didn't make the Earth spin backward. He was flying faster than the speed of light, and thus traveling backward in time. As time reversed the Earth naturally did too.

He was circling the Earth, just out of convenience. He could have flow faster than the speed of light in any direction, but it would have been a waste to go anywhere else.

We stand corrected, Sheldon.

Reeeeet cooooooonnnnnnnnn

Plus, it wouldn't have been dramatic if he was just flying around his apartment really fast.

I'm not sure about that. It seems like it would be a lot easier to travel faster than the speed of light in a straight line instead of in a curve. He should have shot straight out somewhere, then straight back. Unless you meant it was out of convenience for the filmmakers.

Straight out and back is a difficult thing to calculate. The earth would be in a different place in its orbit.

I don't see how going back in time while flying around it would be any easier?

You'd think so, but all Superman would need to do is keep a constant orbit height. With that eyesight, it wouldn't be too hard.

Eyesight doesn't really work at faster than light, though.

He added in a regular infinitesimally small slow blips in his orbits so he could keep track of how far back in time he was going so he'd be able to stop at the right moment.

This is basic stuff, man.

All that while being super-emotionally-motivated? He really is an alien.

If he put his Android phone in his tights and downloaded a GPS app, he'd be fine.

That's a great ad for Google Earth.

GPS actually works because of the speed of light, and time stamps. I would guess that it would issues in this usage case.

this is good reading, specially as i just woke up.
keep on going.

That was uncalled for. Now I'm creeped out for the rest of the day. I must admit that I watched the popcorn trajectory a dozen times before I could look away.

I was always hung up on how he could fly faster than the speed of light to turn back time yet (according to Lex Luthor) he wasn't fast enough to catch the missiles and save Lois, which should have been much easier.

Superman's little known vulnerability: Plot inconsistencies.

Listen, if Superman could really fly that fast, wouldn't he have like major hair loss? or at least an advanced receding hairline?

Not with super uber folicles.

It was proabaly just a toupe held with advanced technology polymer adhesives, like Fred's.

You'd think he could get a few more mph with a shaved cranium though.

Lex took that look first.

You've been talking to my daughter haven't you. Its real, its mine and I'm NOT going bald. Just thinning a little...