AMP10B voltages appear fine....no sound

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Well, I am a little frustrated....

I have finished building the 41hz audio AMP 10b and my 5v section is producing 5v and I am measuring 30v across my bulk capacitors but I am getting no sound. I can't hear the relay clicking, which may be the problem...but I've no idea what to do next and the instructions are next to useless.

Help?!?!?!?!?
 
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