ampage
Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum.

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  

 

previous: Ian Anderson I have a Marshall JTM60 combo, but ... -- 4/23/2000 4:39 PM view thread

Re: Marshall f/sw wiring help...

4/24/2000 1:44 PM
Ray Ivers
Re: Marshall f/sw wiring help...
Ian,  
 
Maybe you've sold the thing already, and it doesn't matter, but...  
 
I just downloaded the JTM60 schematic from the Marshall amp schematic page (schematics.cjb.net) and I have to agree with Wailin - there's no footswitchable reverb function in this amp. There is an MS201 switching op-amp that's used to toggle the two reverb controls - one for each channel, evidently - when the channels are switched, but it appears the jack's 'ring' connection is unused and shorted to ground. The Marshall literature I have here mentions the P801 footswitch for this amp, "single footswitch w/lead".  
 
The new owner can always order a new switch from Korg (part number PED801, price 35.00 - their number is (516) 333-9100). Marshall says the proper footswitch is the P801, same price, without the LED; but it seems clear to me from the print that if an LED were present it would work - you make the call.  
 
Ray Ivers

 
Replies:
Ian Anderson Thanks one and all!... -- 4/24/2000 4:54 PM