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teetoon · 27th Nov 2020, 10:33 pm

No there's nothing missing Chris, it's just as Trev said, you would expect there to be more transisitors before the drivers but I suppose it is a very basic no frills circuit.
I have a Lyon Forge amp here that just seems too simple to work but it does.

Edit: The outputs are a complimentary pair. I just saw the 2S and the 4 on the end and assumed (wrongly) that they were both the same as is quite common.
David.

27th Nov 2020, 10:33 pm	#23
teetoon Heptode Join Date: Dec 2010 Location: Barnstaple, N.Devon, UK. Posts: 557	Re: Identification of unknown PA amplifier No there's nothing missing Chris, it's just as Trev said, you would expect there to be more transisitors before the drivers but I suppose it is a very basic no frills circuit. I have a Lyon Forge amp here that just seems too simple to work but it does. Edit: The outputs are a complimentary pair. I just saw the 2S and the 4 on the end and assumed (wrongly) that they were both the same as is quite common. David.