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Hammond ao 70

bevador

Active Member
Does anyone have any experience modifying A Hammond AO 70 to home use? I think it is possible but wort it I don't know. What i find intriguing is the 2 7591 coupled with four el84s. I think this has potential to sound SWEET.
 
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That's the amplifier from the H-100/200/300 series consoles. Two stereo channels running EL84's with a pair of 7591's for the bass channel. Not very useful apart from being a source for output iron without the separate power supply chassis, which has a large PT and two 5AR4 rectifiers.

Never heard of one being adapted for hi-fi...I'm sure someone's used the iron in them for something. That's probably the best way to make use of an AO-70 in a hi-fi project...harvest the iron from it and use it for a scratch build. Gutting the un-needed circuits and tube sockets from the chassis will have that thing looking like Frankenstein's Swiss cheese...

TP
 
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