3808 clipping
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Joined: Aug 2009
Posts: 3
newbie
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OP
newbie
Joined: Aug 2009
Posts: 3 |
searched a bit on the forum, didn't find anything relative right away, created account now posting.
My setup: denon 3808, m80s, 150 center, qs8 rears, 2x ep500. i have the m80s bi amped according to seetings on the 3808. Problem: receiver clips when listening to music in 5 ch after about 10-15 minutes at 0.0 to +5.0 db volume level...wtf, my assumption is even more power is required...the receiver is set alone to get adequate cooling, but still seems like it heats up at those volumes then shuts down.
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Re: 3808 clipping
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
Erik, welcome. The first point is that the 3808 can't actually bi-amp speakers, despite the suggestion in the manual. There's only one power supply section, and doing the so-called "bi-amp" procedure can't increase the power available in any amount.
Although you use the term "clipping", it appears that you're instead talking about overheating and shutting down. The volume setting that you mention seems to be a bit high for average use. Do you have an SPL meter to measure the actual sound levels when this is going on? It may simply be that you're listening at too loud a level, which the overheats and endangers the receiver, and much more importantly endangers your hearing.
One additional thought is that sometimes a loose strand of speaker wire can be vibrated into contact at loud levels and cause a shutdown even if overheating hasn't occurred. Very carefully reconnect all the speaker wiring, even if it appears to be okay.
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Enjoy the music, not the equipment.
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Re: 3808 clipping
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Joined: Sep 2008
Posts: 4,116
connoisseur
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connoisseur
Joined: Sep 2008
Posts: 4,116 |
Welcome to the Axiom forum erikskiguy.
How big of a room are you trying to fill? +5 on the Denon is very high volume setting.
I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.
-Max Payne
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Re: 3808 clipping
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Joined: Apr 2007
Posts: 4,877
connoisseur
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connoisseur
Joined: Apr 2007
Posts: 4,877 |
Yeah that is pretty high... I don't think I ever turn my 3808 up that loud. However, my room is small to medium size (2250 cf)
-David
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Re: 3808 clipping
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Joined: Aug 2009
Posts: 3
newbie
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OP
newbie
Joined: Aug 2009
Posts: 3 |
thanks for the replies. I agree, +5 on the 3808 is very loud and I probably should not turn it up that high anymore. I do not have an SPL to verify sound levels, but Denon most likely does not suggest listening this loud. My room size is roughly 2500 cubic feet, so not too big.
Another question on the bi-amping advertised by Denon. Is the only benefit I am getting out of this a pure and seperate signal to the woofers and tweeters? The manual also states if I hook up in bi-amp mode like I am now I cannot hook up 7 channels. With the new 7.1 MA formats I would like to go to 7 channels. Would my best bet be to disconnect the proclaimed bi-amping or add in another amp to power back speakers?
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Re: 3808 clipping
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
you can use the rear channels even if your not listening to MA movies. Using Dobly PLIIx makes use of the rear channels, I used that mode all the time. It could be your problem stems from the way you have the 80's hooked up. I think you should try the good ole fashion way of using the standard l/r front channel jacks, and use the rears for rears. Also, you have not said, but if you have removed the gold bar between the speaker terminals, place it back. This is not true bi-amping.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: 3808 clipping
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
Erik, there's no extra "pure and separate signal" benefit either. The woofers and tweeters always get separate signals because of the division in the crossover. What particular set of output transistors they happen to be connected to doesn't make any difference. So sure, obviously if you want the output transistors for the back surround channels to be doing something that's actually meaningful, connect them to back surround speakers.
-----------------------------------
Enjoy the music, not the equipment.
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Re: 3808 clipping
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Joined: Aug 2009
Posts: 3
newbie
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OP
newbie
Joined: Aug 2009
Posts: 3 |
Thanks, I read the article on bi-amping from your webpage. Makes a lot more sense now. I will replace the gold bar on the m80s and remove the extra wire, then most likely get another set of qs8's to set up as rear speakers.
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