'69 100w Super Lead between SL/A10500 thru SL/A10800 ?

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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby Tazin on Sun Apr 07, 2013 3:47 pm

plexi69 wrote:How does the numbering of the metal panel amps coincide with the numbering of the plexi panel amps? I have two metal panel amps. #100--A and #52--A. I have thought the #52--A might be a late 1969 make and #100--A a late 1970 model. They both have 4 inputs on the back. Did Marshall run both panel types together in the same numbering sequence or is there a cutoff number for plexi panels and a # 1 starting point for metal panels? Thank you.


Like Gooch pointed out, the numbering scheme of the metal panel amps and the plexi panel amps are not related but there is some overlap production wise. The final run for the 100w plexi panels (excuding the odd balls) would be SL/A10000 thru SL/A10999 (covering roughly late 68 thru spring of 69). The 69-70 100w metal panel numbering would be SL/A1000A thru like SL/A10xxxA.

cedarchoper58 wrote:still does not prove its the same amp as the one in my pic. Its pointless lets drop it I was trying to help and we disagree


I know you were trying to help and I appreciate it. All I was trying to do was clear up the misconception about that picture. I'll PM you and send you a boat load of pictures of SL/A10836.
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby cedarchoper58 on Sun Apr 07, 2013 6:33 pm

Tazin wrote:
I know you were trying to help and I appreciate it. All I was trying to do was clear up the misconception about that picture. I'll PM you and send you a boat load of pictures of SL/A10836.


I got your pm but for some reason I cant pm you back.
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby Tazin on Sun Apr 07, 2013 8:29 pm

cedarchoper58 wrote:I got your pm but for some reason I cant pm you back.


That's weird.....I know my Inbox isn't over loaded so that's not the problem. I'll PM you my e-mail address then.
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby appetite4distortion on Mon Apr 08, 2013 12:47 pm

-sorry- not strictly in the range you asked for, but I saw the last supposed Hendrix pics and I thought actually somebody stole my amp 8) it's spot-on identical!
Here's some pics of my 10086 (T2562 laydown PT - later filtering w/Hunts). So I guess the wima signal caps is strictly early '69 feature for a couple of months or so!

Image

Image

Image

Image



Image

Are there pictures of 10032 available to compare?
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby Tazin on Mon Apr 08, 2013 2:13 pm

appetite4distortion wrote:-sorry- not strictly in the range you asked for, but I saw the last supposed Hendrix pics and I thought actually somebody stole my amp 8) it's spot-on identical!
Here's some pics of my 10086 (T2562 laydown PT - later filtering w/Hunts). So I guess the wima signal caps is strictly early '69 feature for a couple of months or so!

Are there pictures of 10032 available to compare?


It appears that the WIMA signal caps along with the WIMA 0.68uF/100v bypass caps seems to be a early 1969 thing for the most part. Do you remember what the mains and screens filter caps (the four caps grouped in between the transformers) are on your amp?

As far as I know there isn't any inner chassis (circuitry) pictures floating around of SL/A10032, but I was told by a few sources that it has the same components (brand names, and values) as your amp.
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby cedarchoper58 on Mon Apr 08, 2013 2:41 pm

cedarchoper58 wrote:
Tazin wrote:
I know you were trying to help and I appreciate it. All I was trying to do was clear up the misconception about that picture. I'll PM you and send you a boat load of pictures of SL/A10836.


I got your pm but for some reason I cant pm you back.


why not just post them here :D
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby Tazin on Mon Apr 08, 2013 3:05 pm

cedarchoper58 wrote:why not just post them here :D


Well, there's too many pictures (and too large) for doing attachments through the vintageamps server, therefore I'd have have to upload them to a storage site such as photobucket and link the images.....I'll look into it. Secondly, I didn't want to take this thread on such a tangent by deviating from the main topic more so then it has already.
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby Tazin on Mon Apr 08, 2013 3:45 pm

I know I'm poluting my own thread but here's another amp (formerly Ted B's amp SL/A10838) which has the same WIMA components and such as SL/A10086 with a Test date of Feb. 27, 1969.
Image
Last edited by Tazin on Thu Apr 11, 2013 1:59 pm, edited 1 time in total.
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby cedarchoper58 on Mon Apr 08, 2013 5:21 pm

Tazin wrote:I know I'm poluting my own thread but here's another amp (formerly Ted B's amp SL/A10838) which has the same WIMA components and such as SL/A10086 with a Test date of Feb. 27, 1969.
Image


That is clearly not the same amp as the pic I provided of a Hendrix amp you claim is the same. Look at the cap on the right end of the board. Yours is black mine is whites grey and the resistor above the bias bar is brown on mine and yellow on yours. The screan wires on yours are blue and orange with wire ties all over them. In mine they are black and red with no wire ties. Mine is the Hendrix amp.
Image

I just reread the thread and you are claiming my picture is of a 10836 and you have pictures to prove it and I ask you to post them but you keep not posting and posting other amps.
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby Tazin on Mon Apr 08, 2013 5:39 pm

cedarchoper58 wrote:I just reread the thread and you are claiming my picture is of a 10836 and you have pictures to prove it and I ask you to post them but you keep not posting and posting other amps.


I was getting to it but ran into some problems uploading the pics into its own album....Ok, here's the pictures of SL/A10836.
http://s1293.photobucket.com/user/TAZIN6CA7/library/
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby appetite4distortion on Mon Apr 08, 2013 7:26 pm

Tazin wrote:
It appears that the WIMA signal caps along with the WIMA 0.68uF/100v bypass caps seems to be a early 1969 thing for the most part. Do you remember what the mains and screens filter caps (the four caps grouped in between the transformers) are on your amp?



I'm too off topic now....if you think it's better to open a different thread, just do so.

All filter caps of mine are Hunts, including the quad array, 50+50uf. Needless to say, amp sounds great. With a fuzzface and bridged channels + big headstock strat seems spot on.
I had another September 69 very early metal panel, which was circuitally totally identical, and with same layout, but it had mustards and a couple of Cornell Dubilier blue caps. Still T2562. Filter caps were Erie io. Hunts, but with the same identical "double-dark/bright blue" colour, different from 1970s on (all Erie/daly in dark blue). Also it did not had the rectifier block but the 4 diodes on the right of the board metal panel style and the brown board i.o paxolin. It sounded quite different, but I guess the biggest difference soundwise was due to split cathode 2.7k/0.68 arrangement. The plexi still has the earlier split combo 820/0.68 and sounds warmer.
By the way, the carbon comps resistors of 10086 have drifted quite a lot if it's interesting for you to know..V1 combo of bass channel jumped to 1,1K i.o. 820ohm, bright channel 1k, and V2A (the one under the second 0,68 wima) is 1,5K, which is nearly double the nominal value! Somebody was claiming similar thing about evh amp..I honestly don't think it's that difference.

By the way, the "Hendrix situation" seems now very clear to me: what we have here is some amps with very distant serial number, but despite this, most likely all of them were produced in the first quarter of 1969, April at latest, all with identical combo of caps/resistor brands. Bias caps of SL/A10838 are replaced of course. Original ones of this particular combo were Grey hunts 8uf/160v.
10086, 10838, and 10836 all have two speaker outputs.
12361 possibly was a Hendrix amp, with a mod of tied cathods and V2 bypass cap changed (nobody knows if this came during Hendrix era or later by different owners).
10032 - we have no pics around, but it is supposed to be another Hendrix amp with same arrangement as these. This could be the amp shown at page 116 of Doyle's book (with 4 speaker outputs)?
Am I right?
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby cedarchoper58 on Mon Apr 08, 2013 7:38 pm

Tazin wrote:
cedarchoper58 wrote:I just reread the thread and you are claiming my picture is of a 10836 and you have pictures to prove it and I ask you to post them but you keep not posting and posting other amps.


I was getting to it but ran into some problems uploading the pics into its own album....Ok, here's the pictures of SL/A10836.
http://s1293.photobucket.com/user/TAZIN6CA7/library/


I guess that guy selling the Hendrix amp was using fraudulent pictures. So where did you get your pictures from
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby Tazin on Mon Apr 08, 2013 7:45 pm

cedarchoper58 wrote:I guess that guy selling the Hendrix amp was using fraudulent pictures. So where did you get your pictures from


I got the pictures from the owner of the amp.
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby Tazin on Mon Apr 08, 2013 9:50 pm

appetite4distortion wrote:I'm too off topic now....if you think it's better to open a different thread, just do so.

All filter caps of mine are Hunts, including the quad array, 50+50uf. Needless to say, amp sounds great. With a fuzzface and bridged channels + big headstock strat seems spot on.
I had another September 69 very early metal panel, which was circuitally totally identical, and with same layout, but it had mustards and a couple of Cornell Dubilier blue caps. Still T2562. Filter caps were Erie io. Hunts, but with the same identical "double-dark/bright blue" colour, different from 1970s on (all Erie/daly in dark blue). Also it did not had the rectifier block but the 4 diodes on the right of the board metal panel style and the brown board i.o paxolin. It sounded quite different, but I guess the biggest difference soundwise was due to split cathode 2.7k/0.68 arrangement. The plexi still has the earlier split combo 820/0.68 and sounds warmer.
By the way, the carbon comps resistors of 10086 have drifted quite a lot if it's interesting for you to know..V1 combo of bass channel jumped to 1,1K i.o. 820ohm, bright channel 1k, and V2A (the one under the second 0,68 wima) is 1,5K, which is nearly double the nominal value! Somebody was claiming similar thing about evh amp..I honestly don't think it's that difference.

By the way, the "Hendrix situation" seems now very clear to me: what we have here is some amps with very distant serial number, but despite this, most likely all of them were produced in the first quarter of 1969, April at latest, all with identical combo of caps/resistor brands. Bias caps of SL/A10838 are replaced of course. Original ones of this particular combo were Grey hunts 8uf/160v.
10086, 10838, and 10836 all have two speaker outputs.
12361 possibly was a Hendrix amp, with a mod of tied cathods and V2 bypass cap changed (nobody knows if this came during Hendrix era or later by different owners).
10032 - we have no pics around, but it is supposed to be another Hendrix amp with same arrangement as these. This could be the amp shown at page 116 of Doyle's book (with 4 speaker outputs)?
Am I right?


Don't worry about the topic steering off coarse....These things happen. I asked about the mains and screens filter caps in your amp just to see if they happened to be the same values as in SL/A10734 thats all....I was just curious. While I on the subject of Filter caps....It appears Marshall had a odd practice when it came to purchasing filter caps for the early 1969 100w heads. I've seen all different values and brand names used in these amps. It's almost like they would stop at the store in the morning a pick up a handfull like they were buying smokes for a couple of days. The same weird practice holds true for the 68 100w amps but it's the bridge rectifier in that case. Anyhow, I've seen R.S. 32+32uF/450v, HUNTS 32+32uF/450v, ERIE 32+32uF/450v, HUNTS 32+32uF/500v, HUNTS 50+50uF/450v, HUNTS 50uF/500v, ERIE 50+50uF/450v, MARCON 40+40uF/450v, Dubilier of England 50+50uF/450v for the pre-amp and Phase inverter filtering. For the mains and screens filter caps I've seen HUNTS 50+50uF/450v, HUNTS 100uF/350v, HUNTS 200uF/350v, ERIE 50+50uF/450v, MARCON 100uF/350v, Dubilier of England 100uF/450v, Dubilier of England 50+50uF/450v.

Very typical for the carbon comp resistors to drift upwards in value....Main cause is from heat.

Yep, SL/A10032 should be the one shown at page 116 of Doyle's book which was owned by Tony Brown.
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Re: '69 100w Super Lead between SL/A10500 thru SL/A10800 ?

Postby shakti on Wed Apr 10, 2013 7:58 am

Appetite,
Are you saying your 10086 has a 820R along with the .68 on V1? I can't tell from the photos, and that resistor is obscured in most amps I've seen photos of. I had heard they switched to 2k7 at the end of the 12 series amps? I tend to prefer 2k7 myself.
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