[basementjack]

I just added some fans to my setup - cost was minimal - about $50.

I bought a 2 amp DC power supply with voltage settings of 1.5/3/6/9/12 volts.
I bought a few 'computer fans'
and bought some connectors so the fans could plug into the power supply.

I started with 2 fans clipped to the back shelving to vent air out of the cabinet, but that didn't seem to help much as the amps were still hot.

So it seems that the way to go is a small fan over the amp.

By the way, if anyone is considering doing this - 12v DC fans are the way to go - I originally bought a 120V fan but returned it becuase my system had a 60hz hum when the fan was nearby.

another comment - 12v fans generally not be powered from the 12v trigger - each fan draws about a quarter amp of current, and the 12v trigger doesn't usually have that kind of current.

in my setup, I've got one of those monster power center things - it has a 12v trigger input, and a handfull of switched outlets - so my 12v supply is plugged into that for automatic operation.