The chassis is your friend.
It sounds like the MOSFET drivers would only be a minor contributor to your heat load. They put out less heat than a 6SN7 would.
It sounds like the MOSFET drivers would only be a minor contributor to your heat load. They put out less heat than a 6SN7 would.
10 to 15 watts could be dissipated in one of the heat sinks liberated from an old pentium chip.
My 845SE requires a big heatsink because I have 10 or so (X2) watts dissipated on each mosfet, another 10 or so watts (X2) in the source resistors (Caddock TO220), and 8 watts (X2) from the CCS chips. This adds up to over 50 watts. All of these devices are mounted to the same (big) heatsink. It gets slightly warm.
My 845SE requires a big heatsink because I have 10 or so (X2) watts dissipated on each mosfet, another 10 or so watts (X2) in the source resistors (Caddock TO220), and 8 watts (X2) from the CCS chips. This adds up to over 50 watts. All of these devices are mounted to the same (big) heatsink. It gets slightly warm.
tubelab.com said:
Thank you!
However, the problem is: does it get too hot if I place the heatsink UNDER the top plate? do I have to put it necessarily in open air?
I don't know. The amp hasn't been built yet, and I'm still in the design process.
I just wanted some ideas about the heat. A slower turning fan could be useful, maybe making an hole in the rear of the amp, to make it invisible to the user.
Thank you!
I just wanted some ideas about the heat. A slower turning fan could be useful, maybe making an hole in the rear of the amp, to make it invisible to the user.
Thank you!
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