Cool Vintage Marshall Guy

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Re: Cool Vintage Marshall Guy

Postby silverface82 on Sat May 21, 2016 6:57 am

LD50 wrote:They probably did quite a bit of work on the refurb in 68 because they seem to have replaced the OT with an EL34 type (the OT primaries are red and white as used on Drake 784-128 used in 67 or Drake 784-139 used from mid 67 onwards) a 784-103 for KT66s has black and red primaries with brown centre tap. That type of inspection label (particularly with grid lines was unusual in 66 too.
They might have replaced a bent chassis too but the original chassis might have been chemically cleaned when it was restored, it would be interesting to know who did the restoration as they did a fantastic job.

The important thing we seem to forget that the amp sounds great and must be a pleasure to play and I really would not want us 'geeking out' on whether the amp is an original or not to detract from that.
Have you had the amp long?


Thank you,...LD50

It looks like you are right again.
After looking at many amps in the amp archive i have discovered that the output transformer in this amp according to the
color coding of the wires is a 784-139 EL34 type. Although the solder joints still appear to be original this transformer is incorrect for the KT66 type.(784-103) Furthermore the power supply also looks to be an early 1202-118. Not the old 1202-55 that we see in most late jtm45's. Solder joints also look original, especially where the diode circuit taps are.(or would have been if this ever was in an amp that was diode rectified) With the center slots one one each side(looks like the same as the early black flag models).The rest of the circuit including cap values wiring and resistor values seems to be the same or very similar to the jtm45.
:cry:
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Re: Cool Vintage Marshall Guy

Postby silverface82 on Sat May 21, 2016 1:57 pm

Now i see the negative feedback resistor is not on the 16 ohm tap like other jtm45's it is on the 8 ohm tap?
I knew this amp did not like to run on the 16 ohm tap for some reason...
Once again the solder joints appear original. :huh:
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Re: Cool Vintage Marshall Guy

Postby madstrat on Wed Jun 01, 2016 9:58 pm

wow, just read this whole thread....



thanks for the headache
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Re: Cool Vintage Marshall Guy

Postby silverface82 on Sun Jun 05, 2016 4:20 pm

silverface82 wrote:More pics of what i believe to be the clapton amp.
The previous amp overlaid with clap tons.
Image

Image


Ok,

So their have been rumors that no authentic version II blues breakers have ever surfaced.
Well we do know of at least one that existed.
For a fact!
Decca records made this article about the blues breakers that dates to 1969.
I read somewhere that decca records made these recordings in 1966.
The pictures of this amp on these recordings validates the real version II jtm45 bleusbreakers existence.
So instead of saying they are all fake be open minded.
Iknow if i was clapton i definitely would have informed jim that i wanted an extra speaker jack on the back of my blues breaker as well as a ohm selector.
In this case it also suggest that he even wanted a removable power cable?

Image
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Re: Cool Vintage Marshall Guy

Postby silverface82 on Tue Aug 30, 2016 1:47 am

Hello,
All bluesbreaker enthusiast.
Great news....
I am pleased and also exited to tell you that after looking at the type of tolex glue on my original 68' cab.
I now see the same opaque dull yellowish rubber like glue on my model 1962!
This glue seems to bubble and still be somewhat plyable and even stretchy after all these years.
The glue on the top and bottom back panels looks to be black but really it is just the panel die that makes it look that way.
It also is the same stuff. :cheers:
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Re: Cool Vintage Marshall Guy

Postby silverface82 on Wed Jun 07, 2017 6:36 pm

Alright,
So after quite a while no sighn of this tremolo (without the word "tremolo") faceplate until now.
Of all places... the so called "Music Ground".
Top: a distorted image of what was represented to be a repro panel...
I asked what color the back was? and was then told it was pink?
Center: what was represented to be an original panel.
Bottom: this amp., back of the panel is light green.
Image
Last edited by silverface82 on Wed Jun 07, 2017 7:01 pm, edited 1 time in total.
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Re: Cool Vintage Marshall Guy

Postby silverface82 on Wed Jun 07, 2017 6:48 pm

Suspect right,?
Yeah thats what I thought.
Me and my friend talked about cracking and tying to make a new panel look old.
When the original panels age the natural oils dissapate out of the plexi hardening the material making it much more likely to crack.
I still wonder if someone has not already figured out some other advanced formula to use to make the panels harden and crack more quickly?
Although I have seen the so called Music Ground market some 100% original panels some with drills or other damage.
I cant help but speculate.
Getting the green to bleed through the front of the panel would be a whole different story. The clouding however, could be done by just dropping some oil near the drill outs.
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Re: Cool Vintage Marshall Guy

Postby silverface82 on Wed Jun 07, 2017 9:42 pm

Here it is...
Its the money shot.
Notice the way the light made the gold naturally very thin around the bottom 1 input jack washer.
Then it appears some sort of either condensation, or oil either changed the gold to green, or caused it to become transparent allowing the green from the back to show through... this was something that happen'd over time.

Image
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Re: Cool Vintage Marshall Guy

Postby tommie on Sun Jun 11, 2017 8:19 am

Here's a JMP Super PA panel with the green paint on the back. I don't know if there's a particular pattern to which panels are just gold (if I recall all the JTM 45 or 100's I've had were just gold paint), but it's probably related to the suppliers used from time to time.

https://www.ebay.co.uk/itm/332257026428
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Re: Cool Vintage Marshall Guy

Postby silverface82 on Mon Jun 12, 2017 8:13 pm

Thank you tommie, as this panel is a great example of an original panel.
In my humble opinion, it is not valuable enough to be worth faking.
Also a perfect way to help people identify an original panel.


Image


Image
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Re: Cool Vintage Marshall Guy

Postby Banker on Wed Jul 05, 2017 6:51 pm

Man, when's this going to stop?

:dumass:
When only pinstripe will do.
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Re: Cool Vintage Marshall Guy

Postby API on Wed Jul 05, 2017 7:42 pm

I guess never....
1966 JTM45/100, 1967 "1959" Super Lead, 1967 "1961" JMP 4x10" Mk I Bluesbreaker, 1967 "1962" JMP 2x12" Mk I Bluesbreaker, 1967 "1973" Master Reverb 18w combo, 1963 AC30, 1964 AC15 Twin, 1963 Watkins Dominator, 1965 Princetone Reverb, 1957 Gibson GA-40 Les Paul, 1962 Gibson GA-40 LP, 1962 Epiphone Pathfinder
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Re: Cool Vintage Marshall Guy

Postby tommie on Thu Jul 06, 2017 7:25 am

It'll stop when these lashed up pieces have been sold on to the next sucker and the owner can sigh with relief at not being left nursing the loss.
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Re: Cool Vintage Marshall Guy

Postby Banker on Thu Jul 06, 2017 7:56 am

tommie wrote:It'll stop when these lashed up pieces have been sold on to the next sucker and the owner can sigh with relief at not being left nursing the loss.


He's trying Tommie, it's now for sale at $30k.....despite his knowing that it's a fake amp.
When only pinstripe will do.
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Re: Cool Vintage Marshall Guy

Postby chard on Thu Jul 06, 2017 3:34 pm

Can this guy not be kicked off for pedalling counterfeit items?
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