Mailman1971
Moderator
Good lord man....
That was so good I am over here laughing!
You always bring the goods Brother.
That was so good I am over here laughing!
You always bring the goods Brother.
Ahh, got it. Thanks! So you swap the coupling caps but leave the cathode RC as-is? Have you tried switching the cathode RC's?MichaelR/T":3nbaeen9 said:SpiderWars":3nbaeen9 said:Could you explain it in more detail? I see the guitar cable into Ch2 Hi and the dummy jack in Ch1 Lo but I'm not understanding what that does. I'm looking at a schematic of 4-holer inputs and it doesn't look like it would do anything. Also not understanding how the jack renders the channels cascaded (cascaded, as in one channel feeds the next channel). Or maybe there is more to this than just sticking a dummy jack into Ch1 Lo?
Sounds amazing, just trying to understand.![]()
Thank you for watching the vid.![]()
I know, some are wondering what the hell I'm talking about.
This video I made should give you an explanation as to what's going on.![]()
King Guitar":fwnc69md said:Badass!
Superunknown":fwnc69md said:Just plain awesome! Great tone, great playing!
Mailman1971":fwnc69md said:Good lord man....
That was so good I am over here laughing!![]()
![]()
You always bring the goods Brother.![]()
SpiderWars":1l2sqcbd said:Ahh, got it. Thanks! So you swap the coupling caps but leave the cathode RC as-is? Have you tried switching the cathode RC's?MichaelR/T":1l2sqcbd said:SpiderWars":1l2sqcbd said:Could you explain it in more detail? I see the guitar cable into Ch2 Hi and the dummy jack in Ch1 Lo but I'm not understanding what that does. I'm looking at a schematic of 4-holer inputs and it doesn't look like it would do anything. Also not understanding how the jack renders the channels cascaded (cascaded, as in one channel feeds the next channel). Or maybe there is more to this than just sticking a dummy jack into Ch1 Lo?
Sounds amazing, just trying to understand.![]()
Thank you for watching the vid.![]()
I know, some are wondering what the hell I'm talking about.
This video I made should give you an explanation as to what's going on.![]()
I recently broke out my first homebrew (about 20 yrs ago), a 50W plexi w/ LarMar PPIMV and I had forgotten how good it sounds as-is. But this is so easy and non-invasive I simply have to try it.
Side note: It would be really interesting to hear any difference once you get it all mustardized. I usually use polyester ODs but my plexi build got Sozos.


Chubtone":216zedeu said:This sounds absolutely FANTASTIC!
You say sheer volume, but how loud was this recorded?
Mailman1971":2909lrul said:Want more Nuno guitar clips!!!
![]()
PBGas":3b0vzwpq said:Beautiful job! Sounds fabulous! I can only imagine how loud that was but oh my, totally worth it!
SpiderWars":11jlsjyk said:Damn dude! Just awesome good tones.
FWIW, I adjust my PPIMV a bazillion times more than I do my Presence control. So I swapped them. If you look at the layout it works pretty easy.

SpiderWars":3b1kdao1 said:I remember hearing about this mod a long time ago but I also read that it didn't sound good so I (mistakenly) never tried it.
After doing a tiny bit of research it's easy to see why. There are several versions of the mod (maybe mistakes, maybe a grapevine thing, I dunno). As you said in your video, some add the 1M resistor to the new wire on the wiper. That seems like an insane amount of gain. The way you did it, the second stage has a grid-to-ground resistance of those two 68k resistors in parallel for 34k to ground. That's really low, throwing away a ton of gain (as most all good high gain amps do). When you plug in the dummy jack that 34k becomes 68k, more gain. Adding the 1M resistor it's now 1.034M to ground (1.068 with dummy). It's not as drastic as it seems because it's all in parallel with the pot but it's still a huge difference. It's way more bassy that way too, probably flub city.
Also, some cascade the Bright channel into the Normal but you cascaded the Normal into the Bright (with cap swap). Intuitively that makes sense. When I play my plexi I use the Bright channel and then boost it, just like this mod.
Since I have split cathodes on mine it might require a tweak. Just need a few parts to arrive in the mail (giving it a little TLC) and the deed will be done.As far as playing, can't touch you man.