Geofkait-let's agree to disagree...Battery powered fans can work but I would point the fans away from the amp to passively pull air over the amp. I've heard noise from the air blowing. Also, by blowing on the amps you will get dust build up over time.
tube heat
I just built new shelving for my all tube stereo gear; amp, preamp& cd player. I'm now concerned with the heat build up. What's a safe temperature for these components to run at? What's the best method for heat dissipation? Cones, fans, etc. I welcome any responses