To Hot to Handle?


I have been contemplating the purchase of a tube amp. However, one of my concerns is the possible heat issues associated with running a tube amp (or mono blocs) with 12+ tubes during the summer in the Northeast. I do not have central air in my apartment.

Would it really be unbearable? I would appreciate comments from anyone with such experiences/solutions. Or, are there any 75+ watt tube amps in the under $2500 new/used category that don't run hot?

Thank you in advance,
mattybumpkin

Showing 2 responses by eldartford

If heat generation is a major factor to consider, the obvious solution is a digital amp, which are said to exhibit sonic characteristics similar to tube circuits. My CarverPro ZR1600 (good for 600 wpc into 4 ohms) draws about 45 watts with no signal, and, when driving speakers, has an efficiency (Output power/AC power) around 80 percent. Other digital amps would be similar.
What generates the heat in a tube amp? I know that the tube filiaments, turned on all the time even with no signal, generate a lot of heat. That is their purpose...to "boil off" electrons. The power transformer heat will vary somewhat with signal, as the current draw varies. There are probably a few resistors that dissipate power.

What else generates heat, and what are the relative amounts?