XPost: alt.engineering.electrical, sci.electronics.design, sci.e   
   ectronics.repair   
   From: spam@spam.com   
      
   On Wed, 26 Oct 2011 11:52:49 -0700, DaveC  wrote:   
      
   >> 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.   
      
   No, that would be about right.   
      
   d   
      
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