XPost: alt.engineering.electrical, sci.electronics.design, sci.e   
   ectronics.repair   
   From: spam@spam.com   
      
   On Wed, 26 Oct 2011 11:18:39 -0700, DaveC  wrote:   
      
   >> For that particular circuit with that chip, the caps are necessary   
   >> because those inputs are not at ground potential. If you are feeding   
   >> normal hi fi unit inputs the caps aren't needed. Resistor values   
   >> around 5 to 10 k would be what you need.   
   >   
   >And the value for the potentiometer?   
   >   
   That depends entirely on the input impedance of the subwoofer. You   
   could try a 100k pot and connect it as a normal volume control - one   
   end to the incoming signal, the other end to ground and the slider to   
   the subwoofer.   
      
   d   
      
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