Realistic MPA amplifier

[saturated]

Hi everybody

 

I got to thinking I need something to work on.

A friend has lots of stuff but not really any cool guitar amps

I remember seeing a Realistic MPA amp that looked cool I guess it is a mono PA amp

I just wondered if this would be a cool thing to try to get it working if so I can go get it

 

(Maybe there are some unobtanium components idk)

[Tassieviking]

I would find out what the model is first and then see if you can find a schematic for that model, I know ElectroTanya has the REALISTIC MPA-40 schematic so there might be more out there.
There will always be a use for an amplifier on your workbench eventually, I have a tube preamp pedal of the Mesa Boogie Dual Rectifier that might sound great through a PA amp as long as you have a nice speaker cab to play through.

At worst there will be many great parts to salvage from it and most likely a fantastic chassis to build a proper guitar amp in, just make a new faceplate and it can look professional.

[saturated]

Yes sir thanks in fact I was gonna post

"I've been around here long enough to know that the absolute first order of business is to come up with a schematic " 

Seems I recall he had at least two different MPA models I'll have to take a look one had a silver face and one was black face.

[J M Fahey]

Just in your favour;

* being Commercial amps, their schematics are often found in many repositories, service pages, Sams Photofacts and meybe even a Realistic dedicated fan page.
Or Elektrotanya as mentioned above.

* those amps were *robu: a Hotel, Hospital, Supermarket, Auction site, Bus station losing its PA is a far worse event for many more people than a Guitar player missing a rehearsal so they were made long lasting.
Meaning: it´s very possible that amp *electronics* work fine, but you meed to clean pots, switches, connectors, the "mechanicals"
Which does not really require Schematics.

[saturated]

Yes sir thanks 

And...two rusty dusty boat anchors later 

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The cover screws on the MPA-100 were missing not sure what's up with that

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And on the MPA-200 the left volume? knob spins 360 without stopping 

I hoped the plastic knob was slipping on the pot shaft but the metal shaft spins 360 

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Before I got there I was gonna mention kinda like you warned...Realistic and Peavey seem to have a "bad" reputation of being unearthed from a pile of crap and still working 

I'm kinda pumped that one of them is stereo that's kinda cool I guess 

[saturated]

Well decided to  try em on the ol ugly DBT

First up was the MPA-100 and it was dead as a doorknob 
But then I remembered....oh yeah 

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Next up was the MPA-200

And I got a bit of a surprise 

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