Yamaha 2500 - Exhaust fan

[bubslewis]

I recently bought a Yamah 2500 A/V receiver. I have noticed that occasionally the internal 2 stage exhaust fan (no mention of this in the user manual) engages, particularly when I'm using the 7 channel stereo mode for music. I would assume that the unit would run a bit hotter when all 7 channels are driving speakers. I use the 7 channel mode for music sometimes, and I tend to play it a bit louder than when I'm watching a movie and employing any of the various other 7 channel options the receiver offers.

I kinda imagined that the Yamaha felt a bit warmer than my previous receivers, even when sitting idle, but I wasn't overly concerned. Is the receiver warning me when the exhaust fan kicks in? How concerned should I be? ( I assume that if theYamaha people put an internal fan in the unit that they must have felt that it was important enough to warrant having one in there.)

thanks,
Bill

[GMichael]

I recently bought a Yamah 2500 A/V receiver. I have noticed that occasionally the internal 2 stage exhaust fan (no mention of this in the user manual) engages, particularly when I'm using the 7 channel stereo mode for music. I would assume that the unit would run a bit hotter when all 7 channels are driving speakers. I use the 7 channel mode for music sometimes, and I tend to play it a bit louder than when I'm watching a movie and employing any of the various other 7 channel options the receiver offers.

I kinda imagined that the Yamaha felt a bit warmer than my previous receivers, even when sitting idle, but I wasn't overly concerned. Is the receiver warning me when the exhaust fan kicks in? How concerned should I be? ( I assume that if theYamaha people put an internal fan in the unit that they must have felt that it was important enough to warrant having one in there.)

thanks,
Bill

I have had my 2500 for about a year now. I have never heard the fan come on at all no matter how loud I played it. What kind of speakers are you driving?

[kexodusc]

I have had my 2500 for about a year now. I have never heard the fan come on at all no matter how loud I played it. What kind of speakers are you driving?

Hmm, my RX-V1400 and 5890 made no mention of it..and I don't believe I saw one in there when I cracked it open.
Generally the manual makes mention of the fan in the front pages somewhere.

If the fan is engaging, don't worry. Not the end of the world. I use to push my old rx-v795a hard enough to trip the fan on. It did fine. Might not be a bad idea to cut back on the volume though.
Are you using 4 ohm speakers by chance?

[bubslewis]

All 4 surround speakers and center channel spkr are 8 ohm. BUT... front speakers are 4 ohms. I had wired 4 ohm resistors in line with them, but was given several logical reasons (from some forum members) that that was not a particularly good idea so I took them off.

Bill

[kexodusc]

All 4 surround speakers and center channel spkr are 8 ohm. BUT... front speakers are 4 ohms. I had wired 4 ohm resistors in line with them, but was given several logical reasons (from some forum members) that that was not a particularly good idea so I took them off.

Bill

yeah, you'd trade of efficiency for impedance, and could possibly mess up the acoustic slope of the crossover (though I doubt it).
Well, the 4 ohms shouldn't hurt, I drove 4 ohm speakers with it. But if you have 4 ohm mains and 5 other speakers going at decent volumes, well, that's a lot of juice making a lot of heat.

Just make sure the receiver is well ventilated. And do you really need 7 speakers going at once?

If you haven't already, set the speakers to "small" and let the sub handle the bass frequencies...this will relieve the receiver of a tremendous burden. At the very least, the surrounds could be set to small...

I use power amps with my receiver (which has the same power supply as yours). An investment of $100-$150 in a used Adcom, Rotel, NAD, etc amp for the front mains might not be a bad idea for you.

[Geoffcin]

I use power amps with my receiver (which has the same power supply as yours). An investment of $100-$150 in a used Adcom, Rotel, NAD, etc amp for the front mains might not be a bad idea for you.

I also use a power amp in my HT to drive my mains. It can make a world of difference, especially if the mains are 4ohm and/or have lower sensitivity.