The Boogie Board

bump,please?

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rev F and rev G 2CDR
Randall T2

Sure you could do it. Not sure it is needed, although changing to a lower value would cut down on some of the presence (would wouldn't be such a bad thing).

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Schecter Guitars | Kemper Profiling Amplifier | Superior Drummer | REAPER

Videos: http://www.youtube.com/fluff191
Tunes: http://www.blackmetalbicycle.com

Thanks Fluff,ill give it a go and see if how i like it.not like it cant be changed back.

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rev F and rev G 2CDR
Randall T2

well,i went ahead and changed the pot on my revG and i gotta say,its a night and day difference.it appears (to me at least) to have made the red channel ,say bigger in tone and sound?the other guitarist in our band described it as WAY ANGRIER than it was .really,the orange channel now sounds dull compared to the red.

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rev F and rev G 2CDR
Randall T2

Cool glad it worked out!

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Schecter Guitars | Kemper Profiling Amplifier | Superior Drummer | REAPER

Videos: http://www.youtube.com/fluff191
Tunes: http://www.blackmetalbicycle.com

Were you able to record before/after clips of it? Really interested in hearing the difference!

What size pot did you use? Sounds like I should try this out

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B.C Rich Guitars
Mesa Amps/Cabs

no,nothing before or after.wont be for some time as the amp has shat it self in a major way.
i used a 25K pot.tech assures me it was nothing i did that made it die.its had a few problems for awhile now.
new cap job,new socket job or two to come and a few other issues .not sure when ill get it back.

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rev F and rev G 2CDR
Randall T2

I gotcha. My 2ch Triple is in the shop as well, should have it back in the coming week.

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B.C Rich Guitars
Mesa Amps/Cabs

Left a few messages with Mesa/Boogie during the past week or so...have yet to hear anything back. Was going to give this a whirl in my Tremoverb. Anyone know where else I can get the pot they use? I'm guessing it's not a standard 25k pot?

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https://www.youtube.com/user/BoyntonProAudio/videos <--- Fun Gear Demos

I was just in touch with Mesa Boogie about this presence mod.

They told me that I should also change bass pot to get closer to orange channel with my red.

part numbers they gave me:

presence control pot part # 593737
Bass pot part # 593739

I will order them and later tell you all how it sounds


edit. manual says they already have same bass pot.. weird.

edit2. It seems that new reborn have different bass pots in channel 2 and 3. and perhaps that's why he told me to change it too..

I had to check the bass pot values from the Reborn recto. They both were 590739 and both their in circuit values were around 850kohm. It seems the bass pot value difference was strictly original 3-channel thing.

BTW, both presence pots were dual ganged 22k/100k pots.

This is weird cause if you look from manual the difference in bass pot is in new reborn mode and old 3-channel had same ones.
No idea what is truth then But manual says that you should have different bass pot in orange channel..

Btw. I just got great deal and I traded my old 3chan recto to new reborn model.. I love it.

I don't know what's the deal with the manual, but this is what I found inside the actual amp:

http://postimg.org/image/swdk1anb3/
http://postimg.org/image/inl2vgz9b/

The pots above the dual-ganged pots are the bass pots on 2nd and 3rd channels.

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2007 3 Channel Dual Recto w/loop mod

My Humble Music Tech Blog:
Dual Rectifier Index

When comparing the presence pot values, are you guys using vintage mode, or modern?