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PostPosted: Tue Aug 25, 2009 9:26 pm 
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Dual Recto

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silentrage wrote:
I nominate the Mark III R2 Gain mod.
With that we'd have virtually 3 separate gain controls. One for each channel.


That rolls off the tongue quite easily. Let us see if Andy can come up with the fix. I'm ALL IN, if he can. :D

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PostPosted: Tue Aug 25, 2009 10:44 pm 
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High End Fizz Remover for the 3channel Recto.

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PostPosted: Wed Aug 26, 2009 3:10 am 
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Mark IV
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silentrage wrote:
I nominate the Mark III R2 Gain mod.
With that we'd have virtually 3 separate gain controls. One for each channel.

Maybe more gain at R2 in MK IV.

What about GEQ kit for a non GEQ IIC+ (I have a spare MKIII faceplate)

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PostPosted: Wed Aug 26, 2009 12:04 pm 
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Mark IV
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more gain in R2 would be great for my Mark IV (or a III)

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PostPosted: Wed Aug 26, 2009 8:24 pm 
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Mark V Mod in C+ Mode:

- Push/Pull pots or switches which will allow for the "Pull Shift" (Treble pot), "Pull Shift" (Bass pot), "Pull Deep" (Master 1 pot) as the original C+'s have

- What does the "Bright" switch on the Mark V do, is it the same as the "Pull Bright" (Volume 1 pot) or "Pull Bright" (Lead Master pot)?

- A mod to allow you to use 6L6' and EL34's at the same time. Some say here that you can already do that but I have called Mesa several times and each person has told me that it's either or.

- I understand the circuitry in the Mark V C+ mode is designed after the original "DR" C+ a mod to change it to the circuitry of the "DRG" C+. I understand that there are a few caps which are different (as per the Mark V manual).

- a C++ mod for the Mark V C+ mode

Basically a Mark V C+ mode mod to make it EXACTLY the same circuitry and push pull options with same tube options as the DRG model C+.

Thanks.


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PostPosted: Wed Aug 26, 2009 9:20 pm 
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Dual Recto

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#2121313 wrote:
Basically a Mark V C+ mode mod to make it EXACTLY the same circuitry and push pull options with same tube options as the DRG model C+.

Thanks.


Not to rain on your parade, but if you want a DRG C+, sell your MkV and buy one. Be forewarned, they are definately NOT as user friendly as the MkIV or V. I had the pleasure of playing a MkV last night for a few hours. My favorites were Ch1 Tweed, Ch2 MkI, and Ch3 MkIV. This was with EL-34 power tubes and "substitute" V1,V2 and V3 preamp tubes. I had the MkV opened up for current draw measurement the other day. One look inside the chassis was enough for me. I'm sure it could be modded, but it would not be any fun doing the work. :(

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PostPosted: Thu Aug 27, 2009 1:52 pm 
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Mark II

Joined: Thu Jun 23, 2005 8:01 am
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Location: NW Florida
I'd like to have LESS gain on R2 of my Mark III Blue. I can't switch from clean to R2 without wishing their was less gain (or adjustable gain on R2). I can't get that bluesy/classic crunch without a pedal on R1.


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PostPosted: Sun Aug 30, 2009 8:08 am 
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OK.....so far we have:

Bias Pot (I don't like the idea of external ports because the Plate Voltage and Bias Current really need to both be looked at)

Footswitchable Boost on DC's (I will look into this one on my DC-10 when I find some time)

Facelift: Not sure what can be done about the III. Basically, you would have to switch some components in when the amp is turned to the distortion channel since everything in the clean channel is also in the others. That one might be a bit advanced. I'm thinking fairly simple to install for the 1st set.

Filter Cap replacement kits

1/2 speed switch for the fan (not sure about this one, but I'll look into it)

High end fizz removal on 3 channel Recto

Mark III R2 Gain & Master Volume mods

More gain on Mark IV R2



Some of these, I will need to wait until I can open the amps up and make sure that they work. I may have to start with the amps I own, DC & Heartbreaker. :D Looks like I need more amps! :D

Any other suggestions?
What would make them easy to install? Pictures?



Kiff has some cool midi ideas, you might PM him MJ.

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PostPosted: Sun Aug 30, 2009 12:01 pm 
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Mark III

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Monsta-Tone wrote:

Facelift: Not sure what can be done about the III. Basically, you would have to switch some components in when the amp is turned to the distortion channel since everything in the clean channel is also in the others. That one might be a bit advanced. I'm thinking fairly simple to install for the 1st set.



Not a problem. I was thinking it would be pretty complicated. I will have to call Mesa and see if they know of anything that can be done. I dont know if it would be as easy as having seperate gain controls for each channel considering that it has cascading gain from everything working together. I imagine thats why they went with the Mark IV because this was a nondesirable trait of the mark III.

Its basically the treble knob being turned up high to get the right amount of grit on the leadchannel, which in turn gives a little grit to the clean to as well as volume. Maybe having a seperate treble control for the lead and for clean. I will call and post what Im told.

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PostPosted: Sun Aug 30, 2009 7:21 pm 
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Monsta-Tone wrote:
OK.....so far we have:


Any other suggestions?
What would make them easy to install? Pictures?



DC-5 reverb mod for better reverb

5-way Midrange Sellector switch for channel 2

Footswitchable (adjustable) Solo Boost (works just like the newer models of Mesa amps where you have a Solo button and a pot to adjust the Solo volume)

I'd provide hi-res DC-5 pics if you wanted them.

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PostPosted: Mon Aug 31, 2009 7:00 am 
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The better Reverb is easy enough to do.

The 5-way mid switch is pretty easy to do too, but you need a hole in the chassis or to use an existing hole that is not needed. I usually use the Reverb footswitch jack on amps where it is easily accessible, or the Mix or Slave pot holes.

The Solo boost is tricky. I don't know if it infringes on any patents that Mesa has and I certainly can't afford a lawsuit. The one I do is similar, but not identical to theirs, so I guess I'll have to check.



Looks like I need to get some parts together and figure out what a fair price is for all of them.


I would greatly appreciate some before and after shots.

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PostPosted: Mon Aug 31, 2009 10:38 am 
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Mark II

Joined: Thu Apr 12, 2007 3:48 am
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I'd love to see the "secret" mod Mesa do to Mk-IIA amps that makes the effect loop useble and the Dirty channel more verstile. I'd also love to see a GEQ and/or REV added to amps that don't have it .
Unfortunately, living on the other end of the globe makes sending an amp to mesa cost about as much as another amp ...

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PostPosted: Tue Sep 01, 2009 12:48 am 
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Mark III
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check out FJA mods on youtube..i dug his 5150 mod..he does mesa too..so far just rectifiers i think. (single all the way to the RKII)

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PostPosted: Tue Sep 01, 2009 7:45 am 
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I think I talked to Jerry a long time ago.
Thing is, I want to sell them, not buy them.

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PostPosted: Tue Sep 01, 2009 9:13 am 
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Mark III

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just to make sure i get on any mods you might come up with for the Mark III, as others have mentioned my desires ... it is both great and bad that i can get every single tone i want out of the amp - just not at the same time. but i can get more tones since i did the R2 volume mod. i think i get three ... another gain increase/decrease FOOTSWITCHABLE is my desire. i don;t really care personally whether it's on R1 or R2, although i guess R2 is the best spot to keep R1 "tamed".

as i may have mentioned before ... my playing sucks, but my amp(s) SINGS ...

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