[dukeamps]

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

[Stone]

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

[dukeamps]

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

[dukeamps]

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

[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

[dukeamps]

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

[holgar]

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

Tweak on!
Best regards
Holgar

[Stone]

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

[Duesentrieb]

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

[Stone]

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

[Duesentrieb]

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

[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

[Räuberpistole]

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

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

[Duesentrieb]

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).

[Stone]

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