Watts Tube Audio
   
         
 
MARSHALL JCM800 / 50w KIT & REPLACEMENT PARTS
 
 
Watts Tube Audio carries several replacement and DIY parts for the MARSHALL JCM800 including drop in replacement boards (loaded and uloaded),
components kits, chassis upgrade kits, power and output transformers and chassis both blank and punched.
 
         
         
         
         
         
   
   
    New!    
    MARSHALL JCM800 / 50w KIT    
    Includes everything except cabinet, face plates and tubes.    
    Your choice of either Mercury Magnetics or ClassicTone transformers.
Mercury transformer part numbers: P50JM-475, 050JM & MC10H.
Classictone transformer part numbers: 40-18023, 40-18025 & 40-18032.
LAYOUT DIAGRAM
   
   
Transformer option:
   
         
         
         
   
MARSHALL JCM800 / 50w
   
   
REPLACEMENT CIRCUIT BOARD
   
   
Measures 3.125 x 11.75". Matches and mounts perfectly with our JCM chassis below.
Should also mount into original JCM.
   
   



   
   
Board color options    Terminal options
   
   
Starting at only $29.95
 
   
Terminal type
Color
   
         
         
         
   
MARSHALL JCM800 / 50w
   
   
REPLACEMENT COMPONENTS KITS
   
 
Select components including Mallory capacitors, Sprague Atom capacitors,
1 watt carbon film resistors, and JJ 50-50 can capacitors.
Every component needed to complete the JCM 800 circuit.
 
 


 
   
Only $79.95
   
   
   
         
         
         
   
MARSHALL JCM800 / 50w
   
   
LOADED CIRCUIT BOARD
   
   
As shown with quality components. Made to drop right in to our JCM800 chassis.
   
 
Marshall JCM800 circuit board
 
 
Board color options
 
   
Only $195.00
   
   
   
         
         
         
   
MARSHALL JCM800 / 50w
   
   
CHASSIS PARTS UPGRADE KIT
   
 

Parts kits include all hardware, (6) Alpha 3/8" potentiometers, (5) 502 Cliff jacks, (3) can capacitor clamps,
(2)Marshall replacement rocker switches (one lighted), Marshall replacement impdance and voltage selector switches.
Marshall replacement fuse holders, fuses, iec socket, power cord, (6) wire hole grommets, Marshall style knobs,
(6) standoff sets and Belton octal & 9 pin sockets with shields and retainers.
Includes some very expensive parts. All parts mate with our JCM800 chassis.

 
 


 
   
Only $159.95
   
   
   
         
         
         
 
MARSHALL JCM800 / 50w
 
   
REPLACEMENT TRANSFORMERS
   
   
We offer both Mercury Magnetics and Classictone transformers for the JCM800 50w amp.
Classictone transformers sold seperately here
   
    Classictone part numbers: 40-18023, 40-18025, 40-18032.
Mercury Magnetic part numbers: P50J-475, 050JM, MC10H.
   
   
Choose brand
   
         
         
         
   
MARSHALL JCM800 / 50w REPLACEMENT CHASSIS
   
 
Available in blank aluminum or pre punched steel. Both measure 27" x 6.75" x 2.5".
Punched version has welded corners with inserted nuts for head mounting.
Aluminum version is .090 thick and has inserted nuts for head mounting.
 
 
Marshall JCM800 chassis front
Punched steel. Front view.
 
 
Marshall JCM800 chassis back
Punched steel. Back view.
 
 
Marshall JCM800 Chassis blank aluminum
Blank .090 aluminum.
 
         
 
Type
 
   
   
         
         
         
         
         
   
Thank you for choosing Watts Tube Audio!