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previous: JD Sleep I would like to build a box that I ... -- 2/15/1998 4:18 PM View Thread


2/17/1998 9:24 AM
Jack Orman
I think that you could adapt the Quad Buffer to do all of this. Use one output to drive the amp. Connect a 560 ohm resistor in series with another output driving a small isolation transformer (600:600 ohm)... this would be a balanced line out. A third output could drive a set of headphones. The coils of the 'phones should be wired in series to make a higher impedance load for the IC.  
You should use an LM837 or other quad op-amp that has enough drive for 600 ohm loads.  
I've been thinking of adding some mods like this to the Quad web page... maybe this is a good time, eh?  
regards, Jack

JD Sleep Thanks for the comments, Jack, and ... -- 2/17/1998 4:29 PM
JD Sleep Thanks for the updates to your site... -- 2/19/1998 4:13 PM