Denon 5805- NOT a powerhouse receiver!

[Dan Banquer]

Denon 5805

Hi Buckeye:
Sorry I didn't get back to you sooner but I have been away for the weekend. I think some additional fan cooling for your Denon 3805 might be called for here when you are in "frat party mode". What you need to determine is which way the fans in the 3805 are blowing when they come on. If they are blowing air from the outside into the unit, then try using a small portable fan, approximately 6 inches by 6 inches to move the air above the power amp section. Receivers usually will have a perforated cover above where the power amp section is so the added fan cooling here will move the heated air rising from the heat sinks away quicker than just straight convection. I'm going to assume for the moment that the music will be loud enough in "frat party mode" that the fan noise will not be an issue.
If the fans are blowing the other way so that the fans are drawing air from the inside of the unit out, then mount the fan mentioned above directly above the receiver, where the perforated section is above the heatsinks, so the fan blows air right down on the heat sinks.
Whichever one is called for, you will just be increasing the amount of forced air cooling which should do no harm to the unit.
Years ago someone used my monoblocks for an outdoor party when it was 95 degrees out. I just put a window fan blowing across the heatsinks and the amp ran just fine.
From all of the studies that have been done on heat and it's effect on electronics; the major effect has been on the electrolytic caps. Heat will decrease the life span on electrolytic caps. So keeping the receiver cool in "frat party mode" should help the life span of the unit.
Hope this helps;
d.b.

 

[Buckeyefan 1]

DB,

Great advice. At the moment, I have an actual cpu fan from an AMD Athlon processor chip blowing straight down on the heat sinks. This is a tiny fan - probably 3" x 3", but if it wasn't screwed down, would probably defy gravity. It blows that hard. It's been a life saver and keeps the unit cool. My entertainment "wall" has glass doors where my components are, so when shut, I cannot hear the fan at all. Heck, my DVR with it's constantly running 80gb hard drive is louder. The mfg. of my entertainment "wall" unit wasn't thinking about ventilation issues, so they installed an oak-plywood back. I had to drill several holes just to run the wires through - let alone venting the AVR. Idiot carpenters.

 

[Dan Banquer]

Denon 5805

Is this fan giving you enough coverage for all of the heatsink area?
d.b.

 

[Buckeyefan 1]

I have it positioned in the center of the heat sink, which runs front to back. It produces enough air to come back out on both sides of the heat sink. You'd have to disassemble your pc and see this fan to appreciate the volume of air it produces. It would work better if it were positioned 6" above the center of the heat sink, but I haven't figured out a way to mount it that high...yet.

 

[Dan Banquer]

Denon 5805

Your on the right track, I don't think you will require any more of my input for this issue. Have fun;
d.b.

 

[mtrycrafts]

Was mentioned on thread #25. I still think that's the best deal ($1299) out there for a receiver right now.

Yes, thanks. I realized that when I got to it but too late