Hi guys, I've bread-boarded the following circuit, but its not playing
audio. I get only DC current at the base of the 2N4401. I've had it
playing audio briefly while screwing around. For example if I remove
the 0.01uF cap from the non-inverting input of the left-most opamp and
plug it back in, I hear a distorted version of the song I am playing
as input for about half a second (actually the cap value is polar
47uF). Then silence, DC voltage. Could it be because I am using
electrolytics for these two caps? I can't find any "103" bipolar lying
around, or even close to it. I tried a 0.47uF bipolar but I only hear
about 0.05 seconds of audio when I plug/unplug that one. Have double
checked all the wiring twice.

Circuit below:

http://www.techlib.com/electronics/graphics/audioa14.gif

Cheers,
Ryan
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