Metropoulos Forum

bmf5150 wrote:i have never tried a darkbusrt,how do you like it?mark is tha man for the cascade,love the tone he is getting with it.i have never tried the the 2203 with any other filtering than stock.sound like its a big part of gettin the amp not to be so shrill.

For ED it's the best I've gotten into so far. It's a toss up between that and the Motor City Balckbelt II. I think the BBII is wax potted so it sounds a little different. But not in a bad way. Specs are very close. A SD '59 is close as well but with the amount of wax and uniform wind, they don't sound the same to me. Drop your filtering down and it seems to be how that shrillness disappears. I think Mark is using a 32u PI cap and 16u, 50u on the screens/mains respectively.

vanhalen5150 wrote:I think Mark is using a 32u PI cap and 16u, 50u on the screens/mains respectively.

Not sure if Mark is talking about the mod5 in the first page of this thread but...

Rockstah wrote: ...2203 spec with low filtering, (40u mains, 16u screens, 16u PI, dual 32u preamp.) a PPIMV. gain and preamp dimed.... simple as that.

so if you take a stock 12 series and cascade the first two stages u end up with a 2203. adding a 10k on the second stage instead of the 330u/820 that was there when it was a two channel amp.
now there is gain thats always missing from a 1959 circuit...

I think I was thinking that he was doing that filtering from a different post.

yeah,se i have not tried that circuit with lowered filtering.the shrill highs are why i allways hated that circuit.i think in the first few pages he said he had a .68uf on the v2a as well.

mark you around?any advice?

what low filtering values do you think will work on a 50 watter 2204?

Just want to know is it 33k slope and what settings on the amp dials? I have a 100 watt slp I have been tweaking for months and it is really close to that type tone maybe a little heavier using a JBw/A2

bmf5150 wrote:what low filtering values do you think will work on a 50 watter 2204?

I'm certainly not sure but I'd think it would be the same. I could check a 50w Variplex this weekend if that would help? I guess every amp will be a bit different due to characteristics of that amp itself.

Maverick wrote:Just want to know is it 33k slope and what settings on the amp dials? I have a 100 watt slp I have been tweaking for months and it is really close to that type tone maybe a little heavier using a JBw/A2

JBw/A2 - interesting. do you happen to know the resistance on that? is the JB a 16 ohm thing?

i think rs settled in with a 33k slope a long time ago and i remember him posting with much vim and vigor that 33k is the way to go.

i always thought that the 33k was just a tiny step toward "generic" and that the 68 tone stack 56k/250 had a little more character and allowed for the sound of the player's technique to come through a little more. fwiw. no argument with the fact that rs gets killer tones all the way around - i'm just adding 2c on tone stackness.

The JB I never measured, I know what everything sounds like now after all the trials but the JB is staying in my korina strat with floyd because it was a little too thin with the 59/a5 or dimarzio paf, so I am building something new but want a tad less output but with same dynamics and harmonics as the JB!

On the slope I tweaked 47k (in soldano territory) and I lost some of the marshall kerrang that I wanted so 33k went back!

After I finalized the thing I done the OOOMPH mod, .0047uf on the tap and that was the icing on the cake!

Maverick wrote: After I finalized the thing I done the OOOMPH mod, .0047uf on the tap and that was the icing on the cake!

on the tap - meaning the final output couplers?

rgalpin wrote:

Maverick wrote: After I finalized the thing I done the OOOMPH mod, .0047uf on the tap and that was the icing on the cake!

on the tap - meaning the final output couplers?

NO~just a resonance mod

vanhalen5150 wrote:

bmf5150 wrote:what low filtering values do you think will work on a 50 watter 2204?

I'm certainly not sure but I'd think it would be the same. I could check a 50w Variplex this weekend if that would help? I guess every amp will be a bit different due to characteristics of that amp itself.

That would be great.I'm curious what the 50 Watt variplex uses...

bmf5150 wrote:

vanhalen5150 wrote:

bmf5150 wrote:what low filtering values do you think will work on a 50 watter 2204?

I'm certainly not sure but I'd think it would be the same. I could check a 50w Variplex this weekend if that would help? I guess every amp will be a bit different due to characteristics of that amp itself.

That would be great.I'm curious what the 50 Watt variplex uses...

Here they are from the back.

Hey Mark killer sound!
Would that be JJ EL34 or EL34L? What are you using for pre amp tubes?



TJB