Hi stone, just tried that & it sounds good, only had a B500k pot, would you also leave the 68k out? Just have to get some mids, sounds a bit too scooped, i think i will lower that 1000pf see what happens. With that mod the amp is not as loud as the #34 mod which is better, you don't have to use a power soak.

Cheers

Nigel

Hi Nigel

Thanks for the info - I am thinking it over to give it a try and it seems to be worth it.

Regards, Stone

Hi stone, no problem, just tweaking it a bit myself. Changed the 2k7 over so that it come first & then the 10k, sounds a bit more open, before the 500k pot i have put a 470k/500pf. Might put a bright cap on that 500k pot.

Cheers

Nigel

Hi stone, I have took the 470k/500pf out didn't like it. It would be nice if you also tried the mod, then we could both compare our results.

Cheers

Nigel

Hi Nigel

Sorry for answering late - maybe I have a chance to do some recordings and mods this week; got a new idea for better quality recordings and will have a look if it works.

Regards, Stone

Hi Nigel

Sorry for answering late - maybe I have a chance to do some recordings and mods this week; got a new idea for better quality recordings and will have a look if it works.

Regards, Stone

Hi stone, no problem, looking forward to your results.

cheers

Nigel

Hi Stone,
I am glad to see, that you are back in business again.

Tweak on!
Best regards
Holgar

Hello

Thanks, Holgar

@Nigel: sorry, but currently I do not find any time going on and still I do not have done any further recordings. I think it will last some more weeks until working on tube amp circuitry again

Regards, Stone

Here's a 50 Watter I've modded lately - it was completely modded by Finkenhäuser long before (+ clean channel, + loop, + anode-follower-4stages).
The clean and loop are very cool and well made IMO, the 2nd channel just had a bit too much of everything and lacked some dynamics, a pure lead channel, not a heavy cruncher, so . . . .

I've built that back into 3+CF with "my stuff" and a (soft) depth - I was trying to get back the typical Marshall flair, but with more bottom end and a more modern, meaty gain structure.

The clean channel recording hisses - was my fault, the mic pre had the HiZ setting . . .

http://www.youtube.com/watch?v=CcayuqKpI_Q

Input-R: 1K
150k Plate/1k5,2µ2 Cathode/4n7 - 470k+150pF - Gainpot (250klog)
100k Plate/2k7 Cathode/4n7 - 470k/470pF/470k(g)
100k Plate/820R Cathode

Hi Olaf

Sounds good. Interesting detail: I found a 2µF (yes I know you are using 2µ2) across a 1k5 in combination with 150k plate very suitable for an amp of a friend of mine ... it is pretty close to your mod as I have used a 22nF between stage 1 and 2 and used a 2n2 between stage 2 and 3.

From my point of view this adds a bit more meat to the solo sound / lines but the overall sound is a bit more compressed then.

Regards, Stone

Not if you keep the coupling caps' values low and the gain pot's value lower than 500k, Stone

Olaf,

I know, but the aim was to have a certain amount of compression So I decided to use that big one as first coupling cap ... ... and to keep the other values, too (e.g 1M gain).

Regards, Stone

hi,
@ olaf: what values did you use for your "soft depth"?

btw. very interesting thread... again    :bier:
best regards,
tobi

A 4n7 and just a 250k log pot, gives much better (finer) results and makes it easy to add just small amounts of these 100Hz (or so).

Olaf,

concerning depth ... do you remember how much it was dialed in during recording? I know about its function and did use it on 4x00 Marshalls, but I never needed it with the older MVs oder SLPs because I think they 've got enough punch and bottom even with high gain "enabled".

Meanwhile I own a SLO100 clone and the added depth mod on that amp does make pretty much sense, which I did not expect to be necessary, but it is.

Regards, Stone