Buying a 1971 Super Lead 100

30stringsandblackdog · 11-13-2009, 12:24 PM

I'm new to Marshalls (I have a Reinhardt Fat Albert, a TW Rocket clone, and a Carol-Ann OD2 100), and I have the opportunity to purchase a 1971 PTP Super Lead 100w with laydown transformer. I've attached thumbnails of it; I was wondering why it doesn't have "JMP" on the front panel and was told it was possibly a Canadian version. Can someone take a look at the photos and perhaps either confirm or unconfirm this...Do all 71s have "JMP" on them?
Any help to this newbie is much appreciated. It looks like the real deal, but I want to be sure before I spend the money.

jcmjmp · 11-15-2009, 11:14 AM

That amp was modded, probably with a master volume. Any details on what that pot does on the back panel?

In terms of the JMP identification on the amp, I think that Marshall was somewhat inconsistent over the years,so I wouldn't worry too much about that. Do you have a serial number? Any other markings like CSA?

The laydown PT does suggest that it would be a Canadian model.

For reference, you might want to checkout this page - have a look at the '71 Marshalls.
Amp Archives/Marshall/100 Watt Series 1965-1981/1959 Super Lead 100W

30stringsandblackdog · 11-15-2009, 01:33 PM

Thanks JCMJMP...I got lots of info from various people, including Fred himself at /13. This is a link to my post at vintageamps
Vintage Amps Bulletin Board • View topic - Buying a 1971 Super Lead 100

rockinr0ll · 11-15-2009, 01:42 PM

OP:

I basically was trying to figure out the same thing you are. From what I gathered the polarity switch was used on "export" models and used to change the direction of the 2 prong plug instead of turning off the amp and switching it around.. I would suggest you ground the amp anyway and that switch will become void. I don't think the JMP would fit on the 3 switch models so that is probably why they aren't on there. These amps are old and some need more work than others so use your ears to tell if things should be changed or not. Good luck on finding your tone monster!

11-13-2009, 12:24 PM	#1 (permalink)
30stringsandblackdog Senior Member Join Date: Nov 2009 Location: Where gators roam the back yards..keep your kids and dogs inside!!! Posts: 125	Buying a 1971 Super Lead 100 I'm new to Marshalls (I have a Reinhardt Fat Albert, a TW Rocket clone, and a Carol-Ann OD2 100), and I have the opportunity to purchase a 1971 PTP Super Lead 100w with laydown transformer. I've attached thumbnails of it; I was wondering why it doesn't have "JMP" on the front panel and was told it was possibly a Canadian version. Can someone take a look at the photos and perhaps either confirm or unconfirm this...Do all 71s have "JMP" on them? Any help to this newbie is much appreciated. It looks like the real deal, but I want to be sure before I spend the money.

11-15-2009, 11:14 AM	#2 (permalink)
jcmjmp Senior Member Join Date: Nov 2008 Posts: 2,733	Re: Buying a 1971 Super Lead 100 That amp was modded, probably with a master volume. Any details on what that pot does on the back panel? In terms of the JMP identification on the amp, I think that Marshall was somewhat inconsistent over the years,so I wouldn't worry too much about that. Do you have a serial number? Any other markings like CSA? The laydown PT does suggest that it would be a Canadian model. For reference, you might want to checkout this page - have a look at the '71 Marshalls. Amp Archives/Marshall/100 Watt Series 1965-1981/1959 Super Lead 100W

11-15-2009, 01:33 PM	#3 (permalink)
30stringsandblackdog Senior Member Join Date: Nov 2009 Location: Where gators roam the back yards..keep your kids and dogs inside!!! Posts: 125	Re: Buying a 1971 Super Lead 100 Thanks JCMJMP...I got lots of info from various people, including Fred himself at /13. This is a link to my post at vintageamps Vintage Amps Bulletin Board • View topic - Buying a 1971 Super Lead 100 __________________ The dingo ate my baby! Fender MIA Strat & CIJ Telecaster w/VVG Pickups&Bigsby Gibson: Std Faded LP Honeyburst, CS-336 Vintage Sunburst Taylor 424CE-SL (For Sale) Carol-Ann OD2>Bogner UberKab Reinhardt Fat Albert 50 001(For Sale)Paul Ruby Rocket>Mojo 2x12:Celestion Gold/Scumbag G12H-75 1971 Marshall JMP 50 Tremolo 1971 Marshall SL100> 1960-TV: Blue Dogs&Silver Bells EMMA ReezaFRATzitz, Fulltone GT-500, MXR Carbon Copy, Tremolessence, SkinPimp Mk III Fuzz, Boss DC-2 and TU-2, Line 6 MM4

11-15-2009, 01:42 PM	#4 (permalink)
rockinr0ll Senior Member Join Date: Feb 2009 Posts: 1,602	Re: Buying a 1971 Super Lead 100 OP: I basically was trying to figure out the same thing you are. From what I gathered the polarity switch was used on "export" models and used to change the direction of the 2 prong plug instead of turning off the amp and switching it around.. I would suggest you ground the amp anyway and that switch will become void. I don't think the JMP would fit on the 3 switch models so that is probably why they aren't on there. These amps are old and some need more work than others so use your ears to tell if things should be changed or not. Good luck on finding your tone monster!

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