Large amp fan for Classe CAV150

I know i know..  I did a little googling and read a couple of places that it was "Classe approved" to bridge this amp with 4ohm speakers but maybe "approved" doesn't mean smart.

Let me ask you this then.. What is the danger here?  Just heat?  Or am I risking blowing caps/fuses? Killing the amp?

Heat is the danger, but given adequate ventilation and cooling, if the manual states it can handle it, it will handle it.

Classe makes good stuff. Their specs, (and their manuals) mean what they say. 

Happy listening!

A CAV 150 or any amp with 36 output transistors and 28 caps is likely to run warm to begin with, and bridged, well you feel it now. You are on the right path with a good fan if you must. I'd be tempted to run 1/2" spacers on the top cover and blow air across or fab up another topic cover with holes in it to carry hot air up/out faster.

Agree with the comments above with regard to bridging amplifiers. Yes, you increase power output. Unfortunately the amplifier now sees the speaker impedance load cut in half, ouch! 4 ohms is now a 2 ohm load. Considerably increased work for the driving bridged amplifier.

Charles 

I have had good experience with the AC Infinity T9 top fan cooler for my Rogue Stereo 100 amp. You can set the temp that it turns on and off at. It is pretty interesting how fast tube amps heat up. The cooling fans do a nice job.