paul gilbert modded marshall
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- Jeremy1283
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paul gilbert modded marshall
He is a Paul Gilbert modded marshall I took photos of awhile ago.. thought you guys would like the pics
http://s1295.photobucket.com/user/jerem ... 1.jpg.html
http://s1295.photobucket.com/user/jerem ... 1.jpg.html
- white noise
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Re: paul gilbert modded marshall
Kinda looks like Lee Jackson's work.
- Jeremy1283
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Re: paul gilbert modded marshall
Im just learning so it all looks the same to me. Lol
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Re: paul gilbert modded marshall
This silicon reminds me of CARR amps... Every part there is just coated with silicon!
- Jeremy1283
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Re: paul gilbert modded marshall
I know. Why do they use so much silicon?
- rgorke
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Re: paul gilbert modded marshall
I am pretty sure Lee Jackson did some, if not all of the work on Paul's amps back in the '80s. I use to work with Lee's girlfriend at the time.white noise wrote:Kinda looks like Lee Jackson's work.
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Re: paul gilbert modded marshall
I see only 3 preamp tubes. One of them must be PI, so it's a 3-gain stage amp with CF+tone stack... Kind of JCM 800 with more gain.
Jeremy1283, I think CARR uses that much silicon because it's holds the parts together + if some part will touch another part it will not conduct. For true point to point wiring I look at "BC Audio" or Audio amps like Jadis. It's an ART to wire them like these guys do...
Jeremy1283, I think CARR uses that much silicon because it's holds the parts together + if some part will touch another part it will not conduct. For true point to point wiring I look at "BC Audio" or Audio amps like Jadis. It's an ART to wire them like these guys do...
- Jeremy1283
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Re: paul gilbert modded marshall
What does a cf tone stack mean? Just the type of resistors.Haze13 wrote:I see only 3 preamp tubes. One of them must be PI, so it's a 3-gain stage amp with CF+tone stack... Kind of JCM 800 with more gain.
Jeremy1283, I think CARR uses that much silicon because it's holds the parts together + if some part will touch another part it will not conduct. For true point to point wiring I look at "BC Audio" or Audio amps like Jadis. It's an ART to wire them like these guys do...
I dont see that glue in any othet amps.. Well I'm learning. Thanks for the input.
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Re: paul gilbert modded marshall
CF - Cathode follower. In the Marshall schematics (Plexi, JCM800, JTM45 and others) it's what comes before the tone controls. Vb2 is the Cathode Follower.
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Re: paul gilbert modded marshall
Yeah, a cathode follower has no voltage gain, it doesn't boost, but it changes the output impedance to better drive the tone stack.Haze13 wrote:CF - Cathode follower. In the Marshall schematics (Plexi, JCM800, JTM45 and others) it's what comes before the tone controls. Vb2 is the Cathode Follower.
Some people mod the CF to a gain stage, to add gain to the amp. There are people who like and dislike this approach.
- Jeremy1283
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Re: paul gilbert modded marshall
I gorcha! Do you loose the plexi tone if you make it a gain stage. Any time i change my 12 series to a 2203 preamp with a master volume it looses that plexi sound. WeirdSteadyEddie wrote:Yeah, a cathode follower has no voltage gain, it doesn't boost, but it changes the output impedance to better drive the tone stack.Haze13 wrote:CF - Cathode follower. In the Marshall schematics (Plexi, JCM800, JTM45 and others) it's what comes before the tone controls. Vb2 is the Cathode Follower.
Some people mod the CF to a gain stage, to add gain to the amp. There are people who like and dislike this approach.
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Re: paul gilbert modded marshall
I never tried the mod. Some hot-rodded plexi-type amps like Splawn and so on (If I'm not mistaken) do this. I'm sure some people will say yes, and some people say no.Jeremy1283 wrote:I gorcha! Do you loose the plexi tone if you make it a gain stage. Any time i change my 12 series to a 2203 preamp with a master volume it looses that plexi sound. WeirdSteadyEddie wrote:Yeah, a cathode follower has no voltage gain, it doesn't boost, but it changes the output impedance to better drive the tone stack.Haze13 wrote:CF - Cathode follower. In the Marshall schematics (Plexi, JCM800, JTM45 and others) it's what comes before the tone controls. Vb2 is the Cathode Follower.
Some people mod the CF to a gain stage, to add gain to the amp. There are people who like and dislike this approach.
- Jeremy1283
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Re: paul gilbert modded marshall
Its a matter of taste.
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Re: paul gilbert modded marshall
Yeah this is for sure a Jackson mod.
Rack Systems / Tone Merchants
5419 Cleon Ave.
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Racksystems@yahoo.com
Tonemerchants.com
5419 Cleon Ave.
North Hollywood, Ca. 91601
[818] 209-4309
Racksystems@yahoo.com
Tonemerchants.com
- joey
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Re: paul gilbert modded marshall
That amp has 4 preamp valves, the fourth is obscured by all the floating components and is between the 2nd and third preamp tube.
The circuit is mostly his m1000 circuit, but has his attenuator circuit as well which is basically another form of ppmiv. (Found on the later ampeg amps)
The circuit is mostly his m1000 circuit, but has his attenuator circuit as well which is basically another form of ppmiv. (Found on the later ampeg amps)