MXR series 2000

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
Post Reply
User avatar
Roa
Information
Posts: 33
Joined: 16 May 2008, 15:35
Been thanked: 2 times

Post by Roa »

Hi, last week I recieved a pedal for repairing. It is a mxr distortion+ from 1982-84. It is part of the 2000 series pedals that MXR built withing those years. It seems like somebody has been messing around in the inside of the pedal, as many cables are bad soldered and the chip and transistors seem changed. The IC now is a TI RC4558P ad I believe those units sported the JRC4558.

I have look for schematics through the web but I´m not capable of finding anything about it, just a web where they sold one months ago. This are the guts I found in that web where you can see the original chip, but I can´t tell the transistor type:

Image

I somebody has the schematics or knows the kind of transistors the originals use to have thaht would be very helpfull. Thank you :D

Post Reply