I went crazy today with tweaks, but did I do good??

Rickfox · Post by **Rickfox** » Thu Apr 28, 2005 10:46 pm

Hey guys! For quite a while now I've been considering tweaks suggested on this and on the PP websites. I took notes and.. went with .047's on the output coupling caps, at the top of the phase inverter changed the silver mica cap from 47 to 100, and went with .2's on the standby; I had .1's. Yeah, the schematics all show the .2's. Lastly, it was suggested that the .68 cap be changed to up to a 330 BC. Was that at V1 or V2?? And, does the resistor(820?) remain? In other words, just swap out the .68 for the 330?? So far, I think I like what I hear, I just need to spend more time with it. So, tell me, did I do good?:)

Rick
P.S. My goal with all of this is to get more grind and saturation.

Dax-The-Ax · Post by **Dax-The-Ax** » Thu Apr 28, 2005 10:56 pm

Yeah, just swap them out. The 330 should yield alot more dirt!!! I think??

Flames1950 · Post by **Flames1950** » Thu Apr 28, 2005 11:56 pm

The 330uF will re-focus the dirt, more than add any -- but it's such a big cap it may give you too much gain in the low frequencies, resulting in muddy bottom end. But give it a shot, it's not a big deal to swap it back.

Billy Batz · Post by **Billy Batz** » Fri Apr 29, 2005 7:31 am

.047 for couplers isnt a bad idea. Ive been meaning to try it. 100p smoothing cap accross the PI plates may be a bit high. It may attenuate too much treble for you. If you feel like the amp sounds a bit too much like the tone knob is rolled down on your guitar and you cant get enough 'cut' then you may want to reduce that a bit. I know its all over PP that EVH used a 100p but I have no doubt thats because he used the resistor accross OT primaries which also makes the tone a bit fizzy which raising that helps to tame. If it sounds ok then its ok. I can only assume the 330 your talking about is on stage 2 on V2. MOre towards the middle of the board then the end. That spot is very tweakable. You can use no bypas cap or you can use .68 for a mid emphasized boost or a 330 for a full range boost which does sound like a bit more gain. I have it set on a swtich so that I can get none-.68-330. After a while I decided to drop the 330 to 5u which helped a lot. 5u is right around full range for guitar without allowing tons of the low end through that a 330 does that only muddies the gain up. Thats the only thing you mentioned to help with gain.

Flames1950 · Post by **Flames1950** » Fri Apr 29, 2005 8:19 am

100p smoothing cap accross the PI plates may be a bit high. It may attenuate too much treble for you. If you feel like the amp sounds a bit too much like the tone knob is rolled down on your guitar and you cant get enough 'cut' then you may want to reduce that a bit.

I didn't have a 100pF handy, so I put a 150pF there on my Super Bass; even the Bass model still has plenty of treble to work with, no problems with "cut" as you put it. I think the 100pF will sound just fine, it's a pretty subtle change at best.

gnugear · Post by **gnugear** » Fri Apr 29, 2005 11:44 am

I installed a switch to toggle between 100pf and 47pf. I usually always keep it at the stock value. I've also tried the 330uf cap but didn't like the grit that it added. I thought the .68 was much more musical.

gnugear · Post by **gnugear** » Fri Apr 29, 2005 11:45 am

double post

Billy Batz · Post by **Billy Batz** » Fri Apr 29, 2005 12:08 pm

gnugear wrote:I installed a switch to toggle between 100pf and 47pf.

Do you find that that switch has merit? In other words does it really make a useful or audible difference?

gnugear · Post by **gnugear** » Sat Apr 30, 2005 11:17 pm

It's subtle but I keep going back to the 47pf because it seems clearer.

5150loveeddie · Post by **5150loveeddie** » Sat Apr 30, 2005 11:41 pm

I like the 100pf in my case!!!