3 Channel Recto Presence Mod....

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2CDR
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Re: 3 Channel Recto Presence Mod....

Post by 2CDR » Mon May 30, 2011 6:23 am

bump,please?
rev F and rev G 2CDR
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Re: 3 Channel Recto Presence Mod....

Post by fluff191 » Wed Jun 01, 2011 8:10 pm

2CDR wrote:can this be done on the old 2 channel DR?
will it make much of a difference,or not really needed on the 2 channel?
i have a 25k and a 50k pot.
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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2CDR
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Re: 3 Channel Recto Presence Mod....

Post by 2CDR » Thu Jun 02, 2011 12:46 am

fluff191 wrote:
2CDR wrote:can this be done on the old 2 channel DR?
will it make much of a difference,or not really needed on the 2 channel?
i have a 25k and a 50k pot.
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).
Thanks Fluff,ill give it a go and see if how i like it.not like it cant be changed back.
rev F and rev G 2CDR
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Re: 3 Channel Recto Presence Mod....

Post by 2CDR » Mon Jun 06, 2011 6:16 am

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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Re: 3 Channel Recto Presence Mod....

Post by fluff191 » Mon Jun 06, 2011 12:16 pm

Cool glad it worked out!
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Re: 3 Channel Recto Presence Mod....

Post by JCDenton6 » Sun Jun 12, 2011 7:38 pm

2CDR wrote: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.
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 :mrgreen:
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Re: 3 Channel Recto Presence Mod....

Post by 2CDR » Mon Jun 13, 2011 9:43 am

JCDenton6 wrote:
2CDR wrote: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.
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 :mrgreen:
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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Re: 3 Channel Recto Presence Mod....

Post by JCDenton6 » Sun Jun 19, 2011 2:15 am

I gotcha. My 2ch Triple is in the shop as well, should have it back in the coming week.
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Re: 3 Channel Recto Presence Mod....

Post by Nitrobattery » Mon May 28, 2012 5:49 pm

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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Re: 3 Channel Recto Presence Mod....

Post by StaggerLee » Thu Oct 23, 2014 11:27 am

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..

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Re: 3 Channel Recto Presence Mod....

Post by Shemham » Fri Nov 07, 2014 9:27 am

StaggerLee wrote: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.

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Re: 3 Channel Recto Presence Mod....

Post by StaggerLee » Sat Nov 22, 2014 3:06 am

Shemham wrote:
StaggerLee wrote: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.

Image

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Re: 3 Channel Recto Presence Mod....

Post by Shemham » Thu Nov 27, 2014 11:05 am

StaggerLee wrote:
Shemham wrote: 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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Re: 3 Channel Recto Presence Mod....

Post by afu » Sat Feb 07, 2015 8:14 pm

2007 3 Channel Dual Recto w/loop mod

My Humble Music Tech Blog:
Dual Rectifier Index

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Re: 3 Channel Recto Presence Mod....

Post by 3124+ » Thu Feb 26, 2015 2:23 pm

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

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