XPost: alt.engineering.electrical, sci.electronics.design, sci.e   
   ectronics.repair   
   From: invalid@invalid.net   
      
   > 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   
      
   The data sheet says that the 2 single-ended inputs (R & L) are 50K impedance.   
   The bridge-tied load ("BTL") input -- used for the sub -- is 25K impedance.   
      
   Does this suggest any change to your recommendation of a 100K pot tied to   
   ground?   
      
   Thanks.   
      
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