2. amps-preamps
  3. 1241446280

Proceed AMP-2 & AMP-3 operating temps

Hi gang!

I've had my AMP-2 for 6+ years and love it. I just purchased an AMP-3 on eBay and received it this weekend. This paves the way to upgrade my HK AVR-430 with a Rotel ssp.

With my first couple of days with the AMP-3, I've noticed that it runs significantly hotter than my AMP-2. The 3 is driving center and the rears while the 2 is driving my front L & R. I'll actual temperature readings tonight.

Should I be concerned about this? Are there any Proceed users out there who can give any feedback on how warm or hot their AMP's run?

Thank you!
timjclark

Showing 2 responses by duane

duane
189 posts
 
The bias may be off on the 2 channel amp as these amps do run warm. The higher bias ones should sound a little better so you could use the 3 channel to run the front 3 speakers.
duane
189 posts
 
If anything the Balanced should run warmer only because there would be more gain but that is only if you didn't calibrate the Pre-Pro and gad everything set to the same volume. If it is calibrated then it should not make any difference at all.

What I mean by bias is that all class AB and A amps have a bias to aply voltage to the outputs so that at low listening levels the amp sounds better. If you put your hand on the heat sinks they should all feel the same temperature. If they don't, then the amp should be re-biased for better sound. If they feel the same then the difference is only because you have 3 channels in one and 2 in the ither so the 3 channel will produce 33% more heat overall.
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