Orange or Matamp??

[mac1amps]

I recently received an old Matamp (Orange) in my [Chicago] shop, which had been badley blown-up, and then poorely serviced by some hack, before selling it to it's current owner (via e-bay, of course). I don't know for sure if this is a legitimate Matamp (I've only seen a couple during my 33-years of pro-amp servicing), or an Orange that someone has tried to "pawn-off" as a Matamp (I used to do warranty servicing on Oranges in the 70's, so I've seen plenty of those). After spending many hours cleaning it up, re-installing the [Partidge] transformers, replacing various components, repairing damaged P.C. traces, etc. it still has some strange quirks. I've had to resort to a 70's Orange schematic for MOST of the work, but there are a couple of [un-traditional] controls, not found on Oranges, that aren't working the way [I'm guessing] they should. I imagine it's pretty futile to try to find a Matamp schematic. I am also not certain as to the color code of the output transformer secondaries on this model Partridge, which MAY be damaged (yes, I know I can make D.C. resistance checks to determine the windings, but I don't know for sure whether or not the windings were damaged). I'd sure like to be able to restore this amp as accurately as possible (assuming it is a legitimate Matamp). Anyone possibly know of a source for ANY [technical] info on these??

[Steve Conner]

Matamp are still in business, why not contact them? They look like the kind of people who would be happy to help out.

http://www.matamp.co.uk/

As for pawning an Orange off as a Matamp, I was always under the impression that the Orange guy started out by getting Matamp to make the amps for him. Orange didn't make their own until later on.

[Mars Amp Repair]

you could also join the ORANGE forum ...lots of very knowledgeable Orange fans there...glen http://www.orangeamps.com/forumtest/default.asp

[Chill]

Re a Matamp schematic, the only one I've seen which was close was on Weber's OD120 kit page although I did not see it when rummaging through there today. I believe Chris Winsemus was going to trace a Matamp schemo several years ago but I do not know if it was ever posted.