Solid State Guitar Amp Forum | DIY Guitar Amplifiers

Solid State Amplifiers => Schematics and Layouts => Topic started by: Mangas on October 11, 2016, 03:00:11 AM

Title: Marshall 2201 ...
Post by: Mangas on October 11, 2016, 03:00:11 AM
I was flipping through my documentation yesterday and found something you might be interested in. Rare Marshall 2201 JMP Lead & Bass 30W 2x12" Combo schematic.

Have fun ...
Title: Re: Marshall 2201 ...
Post by: J M Fahey on October 11, 2016, 06:47:23 AM
Thanks  :tu:
Never thought Marshall would build a tall narrow "monolith"  amp  :o
Title: Re: Marshall 2201 ...
Post by: Enzo on October 11, 2016, 08:45:11 AM
And I suspect, somewhere in front of it were found a group of monkeys banging on things with bones.

(https://mygeekblasphemy.files.wordpress.com/2011/08/file-e1313225499789.jpeg?w=640)
Title: Re: Marshall 2201 ...
Post by: galaxiex on October 11, 2016, 07:51:35 PM
Quote from: Enzo on October 11, 2016, 08:45:11 AM
And I suspect, somewhere in front of it were found a group of monkeys banging on things with bones.

(https://mygeekblasphemy.files.wordpress.com/2011/08/file-e1313225499789.jpeg?w=640)

That's a (very) early Rock group paying homage to the god that is Marshall.  ;)

Cool amp!
Thanks for posting!
Title: Re: Marshall 2201 ...
Post by: J M Fahey on October 12, 2016, 11:18:33 PM
QuoteAnd I suspect, somewhere in front of it were found a group of monkeys banging on things with bones.

A.K.A. "drummers"   :o

The more it changes, the more it stays the same.  :lmao:
Title: Re: Marshall JMP 2201 ...
Post by: jurgyman on May 25, 2017, 04:12:44 PM
Thanks for posting this schematic.
I recently came across one of these amps...
I cant tell from the schematic if I can operate this amp on american 220v power...
havent opened it up yet to see whats up...
Do Marshalls usually have a power source type selector?
Title: Re: Marshall 2201 ...
Post by: J M Fahey on May 26, 2017, 10:34:53 PM
The schematic posted above does not show the power supply or transformer, so it does not help on that.
*Some* marshalls had voltage selectors, some had not; so plan B is to look at the back panel and see whati it shows.

If not clear, take a good gut picture showing power socket wires, fuse holder, switch, and transformer wires, we might see something.

Not sure what you call "220V American power", usual mains voltage available at home outlets is 120V ; although 240V are often available "inside the wall"  they are only connected to special sockets for high power appliances, such as large air conditioners, large washing machines, some ovens, etc.