ampage
Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum. New: view Recent Searches.
New: visit Schematic Hell!
The sunn still shines online!

 
Listen to great tunes streaming live right now!

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  
  View Thread

Newcomb Pathfinder build

11/1/2004 7:12 AM
AtomicMassUnit
email
Newcomb Pathfinder build
Just got a Newcomb Pathfinder tube PA head. It has 2xEL84, 5y3, a 12ax7, and a 6BR8 (medium mu triode/sharp cutoff pentode). Any suggestions as to what I can turn this into? No schematic available that I see, but it's really simple true ptp.  
 
One thing I wonder about is the output transformer. It has leads going the speaker outs, 4,8,16 ohms and one labeled 25v. It also has leads going to pins 7 and 9 on the EL84s. What's the pin 9 lead for?  
 
Should I try to just voice the current amp for guitar or gut it and build something else? Would a Matchless spitfire or lightning work here? Or some kind of Vox? I'm open to suggestions.  
 
I saw on the homebrew gallery that F.J.R. made a guitar amp out of one. Anyone know how to get ahold of him? His email bounces.  
 
Atomic

 
Replies:
Steve L That tube setup is fairly close to ... -- 1/2/2005 9:01 PM
Clark I've had a Newcomb Pathfinder 10 wa... -- 2/26/2005 8:49 PM