BK mosfet module upgrade test bed (100w) - diyAudio
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Old 30th August 2013, 08:53 PM   #1
diyAudio Member
 
Join Date: Feb 2006
Location: Essex
Default BK mosfet module upgrade test bed (100w)

Hi

Please find some pics of my BK module upgrade test bed, I have made some mods so just wanted to see if every thing worked before I put into a decent case.

I have removed the mosfets and placed on a L bracket for better servicing etc, I have added decoupling caps across the main res caps. Relocated the bridge rec to the main heat sink plus relocated the gate stopper resistors closer to the mosfets .. plus changed the caps to better quality etc.

I have modded the velleman protection module to use a heavy duty relay and modded the unit from a dual channel to a single channel.

I just wanted to see if I could really make a heavy duty amplifier that would run continuous be abused and be reliable in any situation. I have even made the out put coil with bigger gauge copper. All the tracks have been made with 2oz copper. I have tested tonight and sound really good .. bias is 100ma and the output dc off set is less then 50mv .. I used Nos 2sk174 and 2sj59 mosfets from my old stock.

what do you think?

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