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|10/17/2000 6:49 PM|
||Dating 70's Marshall amps|
I have an early 70's MkII 50 watt head. The serial#6945F
Where can I go to find out the age of this amp. Also
when did Marshall stop wiring point to point.
|10/17/2000 8:20 PM|
Well, I had a '73 hat the serial ended in "e" so with yoru sbeing an "f" it would be a 1974 amp.. open the back and look for a label on the top of the chassis with a more accurate date (mine was dated 11-1-73, which meant Jan. 11, 1973). It was sometime in 1973 tha tthey switched over to PCB from the tagboard construction of the ol plexi's... I had one of the pre-pcb models. hope that helps!
|10/17/2000 8:22 PM|
Dating info is in Michael Doyle's history of Marshall book. Yours looks to be a 1974 model. I believe ptp stopped in '72. I'm sure someone has a definitive date for this.
|10/17/2000 8:33 PM|
it was defintiely in '73 when they stopped PTP wiring... mine was an early '73 and it was still PTP
|10/18/2000 3:06 PM|
I wasn't sure, and we poted replies at the same time as each other. Wasn't trying to contradict you (of all people).
|10/18/2000 3:24 PM|
heh, no problem man. I've done that many times!
Ironically... I wish I wouldnt have sold my 100watter. but ya know how we all do things we later regret *laugh*
|10/17/2000 8:51 PM|
According to the chart in Pitman's book, the letter F indicates it is from 1974.
The prefix of your serial number should probably be S/A.
I don't know what year Marshall stopped using PTP, maybe Trace, Rebel, or one of the other Marshall guys might be able to help.
P.S. Here's one for you. I've got a 100W Super Lead that I can't easily date. Someone changed the face plates from the gold metal panels to a dull silver/aluminum metal panel, silkscreened in gold all of the markings for the controls & jacks. However they silkscreened the serial # on the back panel without the letter.
I've talked to a few people about it and the best we can come up with is ~1973. This amp has a small lettering, white logo on the box, 2" laydown PT (500V on the plates), 6 50/50 LCR caps (not caps inside the chassis), metal toggle switches for power & standby not plastic rockers, and holes for 4 speaker jacks.
PLEASE don't think that I did this to this amp. When I bought it it had an unwired pot beside the toggle switches and above it the panel is labled Pre-Vol. It also had an active effects loop installed with level controls in two of the speaker jack holes. I've since brought it back to the stock 1959 circuit.
Any takers on dating this amp?
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