Cooling fan for tube amp?

Right. The amp itself needs no cooling fan. Plenty of air flow even with a shelf above it. Which that, if anything, is what could use the fan. The shelf above it. Even then only the bottom of the shelf. Heat dissipates from the shelf, air flows around it all, and the component above just isn't going to get all that much hotter anyway. 

But we live in a world where audiophiles set their system cooling thingamajigs to 77 degrees. I don't have AC, my whole house doesn't stay that cool in summer. My tube amp is just fine. Now me, I could use a fan!

But we live in a world where audiophiles set their system cooling thingamajigs to 77 degrees. I don't have AC, my whole house doesn't stay that cool in summer. My tube amp is just fine. Now me, I could use a fan!

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Think of in the Bay area. I've seen 15-20 days of over 100.  It gets real hot where I live and use to work. (Imperial Valley, Vegas, Bakersfield).

I  use a different amp in the summer. (3 month or so). Just too darn hot.

I can't take the AC, dries me out, too. Basement time. Then I have to put up with background noise. Fans, and blower vents..
Water coolers are the best. But NOT on my stereo gear...Sure help with static, buildup though..

Regards

millercarbon

... the amp itself needs no cooling fan. Plenty of air flow even with a shelf above it.

I don't think 2 inches of vertical clearance is sufficient for any vacuum tube amplifier, even if the rack it's on is open on the back and sides. I have more than that and didn't think it was sufficient for my tube phono preamp, so I put an AC Infinity fan on it. Works great and can't be heard from my listening position. For $50, it pays for itself by extending tube life. After all, heat is the enemy of electronics. 

Great suggestions, but I need a fan to be mounted on the back of the rack to cool the amp.  Just a wee bit of air movement will suffice. 

whitestix

... I need a fan to be mounted on the back of the rack ...

@whitestix why does the fan need to be mounted at the back of the rack? Your 2 inches of vertical clearance will accommodate an AC Infinity unit, which can then exhaust to the back or front of the rack.