100-watt sub woofer amplifier

[Nico Ras]

I would rather use a VBE multiplier mounted to the heatsink instead of the two diodes. It is difficult to mount diodes snuggly to a heat sink.

 

[Rafael L]

one pair is enough to drive 100watt load

There's more transistors that support 100W, for ex: MJL3281/1302 it are complementary.
2N3773 is difficult of meeting original and also worse than the above model.

 

[comasus]

There's more transistors that support 100W, for ex: MJL3281/1302 it are complementary.
2N3773 is difficult of meeting original and also worse than the above model.

Then you can give me schematics
i wan to make an amplifier for keyboard and guiter
Thank you

 

[sumeshak]

Here is one that will work with your mpsa42's and will be 10 times better that the one you posted. Runs on 40-0-40vdc.
OS

Hi,
Is this schematic finals, I wish to try it.
Thanks