MarkIIB to IIc conversion mod, any advice??

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iggyward
Bottle Rocket
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MarkIIB to IIc conversion mod, any advice??

Post by iggyward » Thu Jun 22, 2017 3:35 pm

Hi Everybody, I've just found this forum in my search for info on modding my old markIIB to IIc (or C+) specs. Can anyone give me info on how to go about it? I can read a schematic and handle a soldering iron but I'd love to get a detailed "how-to" on the conversion. I got this amp well used 30 years ago and it has been gigging hard all this time, 3-5 gigs every week, had a few falls but never let me down. Any help much appreciated.

Rider1260
Mark I
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Re: MarkIIB to IIc conversion mod, any advice??

Post by Rider1260 » Mon Jun 26, 2017 4:45 pm

From my understanding the parts are no longer available , You used to be able to send them to Mesa for the mod
Mesa MKIIb ( my first in 82 )
Mesa MK V
PRS 2 Channel H
Tonal Insanity Guitar Effects
TC Electronics Nova System
PRS Guitars

gts
Mark IV
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Re: MarkIIB to IIc conversion mod, any advice??

Post by gts » Mon Jul 03, 2017 11:50 am

IIB to IIC (or C+): Can't be done. Requires full pre-amp board swap (among other things) and they are no longer available.

JOEY B.
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Re: MarkIIB to IIc conversion mod, any advice??

Post by JOEY B. » Mon Jul 03, 2017 5:18 pm

The "Post FX Level" mod is going to be as close that you will get. I have played a couple of the IIB amps with this done to them, and they sound mighty fine. You will need to send the amp to Petaluma to get it done, but it's worth every penny.
"One of these days, I'm gonna change my evil ways....... one of these days.

gts
Mark IV
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Re: MarkIIB to IIc conversion mod, any advice??

Post by gts » Tue Jul 18, 2017 11:01 am

JB are the IIB's more Blackface Fender like in the way they sound and respond?

JOEY B.
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Re: MarkIIB to IIc conversion mod, any advice??

Post by JOEY B. » Thu Jul 20, 2017 6:50 pm

gts wrote:JB are the IIB's more Blackface Fender like in the way they sound and respond?
I don't know about "Blackface" as the only one that I have ever used was an old Bassman, and that was over 30 years ago. What I will say is that the rhythm channel on the IIB was very nice, a bit more rounded sounding than the C+. The attack was not as immediate. With the "Post FX Level" mod, the lead channel was nice and smooth, a-la Santana. If you are wanting a heavily disorted lead channel for playing sharp, biting rhythm licks, get a Mark III, and be done with it. We have been down this road before, about the Mark III vs. C+ if I remember correctly. :roll:
"One of these days, I'm gonna change my evil ways....... one of these days.

gts
Mark IV
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Re: MarkIIB to IIc conversion mod, any advice??

Post by gts » Sun Jul 30, 2017 9:21 am

JOEY B. wrote:
gts wrote:If you are wanting a heavily disorted lead channel for playing sharp, biting rhythm licks, get a Mark III, and be done with it. We have been down this road before, about the Mark III vs. C+ if I remember correctly. :roll:
Not with me ;-)

JOEY B.
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Re: MarkIIB to IIc conversion mod, any advice??

Post by JOEY B. » Sun Jul 30, 2017 9:58 am

gts wrote:
JOEY B. wrote:
gts wrote:If you are wanting a heavily disorted lead channel for playing sharp, biting rhythm licks, get a Mark III, and be done with it. We have been down this road before, about the Mark III vs. C+ if I remember correctly. :roll:
Not with me ;-)

Oh, I know, but with a few others. 8)
"One of these days, I'm gonna change my evil ways....... one of these days.

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