Conference napalm::guitar

2525.0. "Hotrod A Fender Champ (DIY Project)" by RGB::ROST (The Creator has a master plan) Wed May 13 1992 08:35

    Got this off the USENET.  Discusses a DIY project to hotrod a Fender
    Champ.
    
From: [email protected] (Bob Manley)
Subject: Build a Tube Amp
Organization: Hewlett-Packard, Fort Collins, CO, USA
 
      In the latest issue of Glass Audio, V4 #2, there is a "modification"
   article on the Fender Champ; 'The Remaking of a Champ' by Kirk Elliott.
 
      In reality, this is from the ground up a new design with lots of details
   on design trade-offs, etc.  The amp was designed for studio work and 
   claims low noise, stability, and hum-free operation.
 
      The preamp portion has three gain stages (two 12AX7A's) with some fixed
   and variable EQ.  The variable EQ is bass and treble.  In addition, there
   are two volume controls; actually three counting the master volume.
 
      The output stage is a single 6L6GC in a topology designed for long-life
   with lots of overdrive and lots of harmonics.  Power output is claimed
   to be 12.5W into 8ohm.  This is more than a stock Champ.  The recommended
   speaker is the Celestion G8S-50,  but any 8ohm instrument speaker will work.
 
      The article includes construction hints, but remember you are dealing
   with voltages close to 400V and a screw-up could cost you your life.
   Also, Glass Audio is not Heath Kit; you have to know something about
   schematics and construction to fill in the blanks.  Otherwise I can't think
   of a better choice for jumping into the wonderful world of do it yourself
   tubes. 
 
      Regards,
      Bob Manley
 
      For those who are intrigued:
 
         Glass Audio
         PO Box 176
         Peterborough,
         NH 03458
 
         (603) 924-9464
 
         Sample issues $4.00 in US and $5.00 in Canada.  I don't know if you
    can ask for a specific issue as a sample or not.  One year subscription
    is $20.  This is a quarterly and you get the entire year when you sign up.