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Hotbox volume questions


 :
5/9/1999 6:02 AM
Ed
 Hotbox volume questions
I've built a Hotbox clone and have a question. The schematic is exactly the same as a Vox Top Boost design. You can find it on this site in the schematics section. The output of the treble pot then goes through a 100K resisitor and then to a 100KA pot. The wiper of this pot is the output of the effect.  
 
I am very happy withe the gain and amount of distortion this effect produces. The problem is with the output/volume. With the output knob turned only a tiny fraction of the way up, the volume is so high as to overdrive the amp it's plugged in to. Any suggetions on how to build in a more usable output control? I've tried increasing the 100K resistor mentioned above to a 470K one, but with no real improvement. Is there some way to attentenuate the output voltage? Thanks a lot in advance,  
 
Ed
  
5/9/1999 6:52 AM
Jack Orman
quote:
"The output of the treble pot then goes through a 100K resisitor and then to a 100KA pot. The wiper of this pot is the output of the effect."
 
 
If you increase the value of the resistor in series with the output pot you will decrease the total volume that is available. Make it 470k with a 100k pot and see if that isn't better.  
 
regards, Jack
  
5/9/1999 9:47 AM
Ed
Hi Jack,  
 
I actually already did increase it, first to 470K, then to 1M. It really didn't do a whole lot. I'm getting a HUGE amount of volume out of this effect! I tried taking the 2nd gain stage out of the circuit, and it definitely lowered to volume to a good value. Unfortunately it also drastically reduced the gain. Not what I want to do particularly.  
 
Any other suggestions?  
 
Ed
  
5/9/1999 1:38 PM
Jack Orman
quote:
"I actually already did increase it, first to 470K, then to 1M. It really didn't do a whole lot. I'm getting a HUGE amount of volume out of this effect! "
 
 
I must have misread your post, I thought you were changing the pot value.  
 
Something's strange if you increased the series resistor to 1M and it didn't decrease the output by a lot. Change the output pot to 10k-A and see if that helps - leave the series resistor at 470k or even 1M.  
 
-Jack
  

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