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Barber Tone Pump schematic?


 
2/11/2001 1:46 AM
Pete Galati
Barber Tone Pump schematic?
Does anyone have a schematic of the Barber Tone Pump on their website? I hear good reports about the Tone Pump, but it costs an arm and a leg.  
 
 
 
Is it a difficult build? Any difficult to find parts in it?  
 
 
 
Thanks.  
 
 
 
Pete
 
2/11/2001 7:43 PM
Ed Rembold

I've seen one, didn't bother tracing.  
 
basic, tuned up TS9.  
 
more bass, more gain, flatter mids,  
 
different opamp (IIRC a JRC 4559)  
 
2 pairs of 4148's, the usual drill.  
 
Ed R.
 
2/11/2001 8:16 PM
Pete Galati

I've seen one, didn't bother tracing.  
 
basic, tuned up TS9.  
 
more bass, more gain, flatter mids,  
 
different opamp (IIRC a JRC 4559)  
 
2 pairs of 4148's, the usual drill.  
 
Ed R.
 
 
 
 
Thanks. I did stumble on a schematic of the Tube Screamer yesterday, and I looked at it and said, well, if the Tone Pump is anything like this, I probably need to hold off on building one.  
 
 
 
I'm kicking around the idea of doing something much more humble and closer to my ability, I figure I could use a LPB-1 circuit to power a Marshall tone stack (per Duncan's TS calculator)   RS claims to have the 2N5088 I'd need, but not in their stores, but...  Small Bear has it!  
 
 
 
Pete
 
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