Modded Super Reverb Reissue - HELP

[jayrayjr]

Hey all,

i have been reading and learning so much on this forum but i still have some questions!

I got a Super Reverb Reissue (with 4 WGS Veteran 10's) and i love that amp but from the first day it had a brittle top end, way too much bass and muddy lower mids.

So i started to look into some mods (reading 12h a day almost lol), i cant do them myself yet but i have a good tech thats willing to do whatever i want.

The first thing i did to get rid of the muddy lower mids was to change the .022 to a .047 mid cap as the Twin has, totally did what i wanted it to do.

Regarding the Bass, i changed V2A+B to 2.2uF Cathode Caps and both PI Output caps to .022 which helped so much in the bass department, awesome bass cut but still not tight enough for me.

Regarding the treble, i changed the Treble cap to 330pf SilverMica (dont like 250pf much) but there still was this nasty treble content.

I learned about the 10pf cap at the Mixing Resistor, changed it to 10pf SilverMica which was better but nasty still compared to the noorml channel, so i clipped it and finally was a bit more happy with the treble.
(i might try a 10pf + 330K or 470K Resistor in series after i get the brittle top end sweeter for some sparkle on top)

Then i heared bout the Diaz Mods (just tried 2.7K not .068, wasnt really my thing a little compressed and more bright i find), but i really like the Solid State Rectifier (soldered diodes not plug in).

I also disconneted to Normal Channel and Tremolo completely and put a 20K Mid Pot in instead of the 10K which i really like to get phat mids if i want

Oh and i installed the Lamar/trainwreck typ 2 - 250K Dual Pot PPIMV with 2.2M Resistors. (i just use it to gently bring down voulme sometimes NOT for pre/pi overdrive so it sounds killer)

The amp sounds just awesome but i still desire two things, a more sweet/smooth topend and a tighter bass!

Right now i have 2x70uF Filter caps in, would 2x100uF be enough to make it tight? because i have the fear that it might get too stiff with 2x220uF caps.

And as i really like dumble/two rock cleans (but cant do the tonestack mod due to reissue pcb) would it help to bring my V2 plate voltage from 270V down to say 200V to sweeten up the tone/top end?

Does anyone btw have some other tips to get a more open 3d like tone? (Tubes ar all Nos btw with a GE Blackplate 50's 5751 in V2)

Help is greatly apreciated,

best
Johnny Ray

[Stevem]

Have you tryed out other guitars thru the amp?

What is normal volume setting most used when you play the amp, above 5 or below 4 on the control?

Have you thought about taming the highs and the lows in the guitar?

I have 5 friend on which in there guitars I have added a cap to the neck pick to roll off low end that they never need for anything but clean sounds so I also put a switch across this low cut cap to take it out of the circuit when needed.

There are changes you can do like this within your guitar(s) that can make for a far greater change then what can be within the amp at times, especially if you can't have a amp that has been reworked or built to be a one trick Pony!

[jayrayjr]

Hey man!

Yes i tried other guitars through the amp, my desire for smoother tone and tighter bass didnt change.

At the weekend mostly over 5 (yeah i know about the tone controlls, i dont set them that high with higher volume going on) and on the other days around 3-4.5 on the volume.

No i havent thought about that as ive got beautifull low output vintage 60s pickups wound by a friend which i played through a lot of amps, no problems with the bass or treble they are just sweet sounding pickups.

Thanks for your suggestions though any conversation is apreciated!!

[dpin]

For the treble you can try adding a snubber cap across the PI plates from pin 1 to 6 (snip attached). Anywhere from 10pf up to 100pf could be useable.

For the bass you might try increasing NFB by adding the same value (820 ohm) in parallel across the NFB resistor. It might take going lower with the value to really hear a difference.

Your tech could clip these in for you to try if he's that cooperative. I enjoy this process because you get to see the player's immediate response.

Good luck and have fun!

[jayrayjr]

@dpin Thank you man, i will give it a try!!

[dpin]

Adding NFB can effect the highs also so if you find that the bass tightens up but you don't love the effect it has on the highs you "could" add a cap to the circuit, like in a presence control. Your tech should be able to figure that out.