TMB tremolo part deux

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zaphod_phil
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Re: TMB tremolo part deux

Post by zaphod_phil »

Bieworm wrote: ↑
Fri 05/29/20 12:49 pm
I was experimenting with the amp with 12at7 and 5751 in V2. The OD on low volume disappears. Do you have a suggestion what types and brands I should definitely try?
If you put low gain tubes in the V2 position, it's no longer a Marshall 18W, but some other amp, as that change totally changes the preamp gain structure. Definitely try a re-issue Mullard ECC83 (made by New Sensor) for some really beautiful tone. :D
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Re: TMB tremolo part deux

Post by Bieworm »

zaphod_phil wrote: ↑
Mon 06/01/20 7:04 pm
Bieworm wrote: ↑
Fri 05/29/20 12:49 pm
I was experimenting with the amp with 12at7 and 5751 in V2. The OD on low volume disappears. Do you have a suggestion what types and brands I should definitely try?
If you put low gain tubes in the V2 position, it's no longer a Marshall 18W, but some other amp, as that change totally changes the preamp gain structure. Definitely try a re-issue Mullard ECC83 (made by New Sensor) for some really beautiful tone. :D
Noted!!!πŸ˜‰
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Re: TMB tremolo part deux

Post by Bieworm »

JMPGuitars wrote: ↑
Wed 04/22/20 5:16 pm
Bieworm wrote: ↑
Wed 04/22/20 1:47 pm
New voltage chart..after the PR mod. 15V zeners + UF diodes
The fizz is 99% gone. Did recording before and after. Full blast ...

Before PR mod:
https://www.dropbox.com/s/sh56wppb87ti6 ... 3.m4a?dl=0

After PR mod:
https://www.dropbox.com/s/sh56wppb87ti6 ... 3.m4a?dl=0
Ha, both sound great. I admit I didn't listen all the way through on either, but I didn't find it that noticeable before, and not at all after. Did you still hear it somewhere?
Did you see my post about the lamington reverb? I would appreciate your opinion about it...and I'm somewhat confused about the power trannie. How do you see that?
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Re: TMB tremolo part deux

Post by Bieworm »

i found out that in an other amp I had some very nice tubes hiding inside that I forgot about...
1 gold pin EHX 12AX7EH
1 tung sol 12AX7

So after some playing around I found the EHX in V1 and the TS in V2 were absolutely amazing AND much less hiss..
So I put the JJ's in the box :)

The EHX and TS are a very big improvement!!! Though the JJ's were nice too..

Had a 12AT7 groove tubes in the other amp too, but in V1 it sounded really great, but the tremolo started thumping.. no go!!
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Re: TMB tremolo part deux

Post by roadshow »

Bieworm wrote: ↑
Tue 04/21/20 9:46 pm
JMPGuitars wrote: ↑
Tue 04/21/20 6:23 pm
Very nice...but where's the logo? ;)
Nice remark!!.. The glue was curing overnight
;)
Did you build the cabinet?

The one I did last year is similar for that 18W build:
viewtopic.php?f=4&t=25367

I just don't like the controls at the top back, inconvenient. Then again, the thing I HATE about my Fender Twin Reverb is the switches in the back. But, they had to put the logo somewhere, I guess...
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Re: TMB tremolo part deux

Post by Bieworm »

roadshow wrote: ↑
Tue 06/09/20 4:10 pm
Bieworm wrote: ↑
Tue 04/21/20 9:46 pm
JMPGuitars wrote: ↑
Tue 04/21/20 6:23 pm
Very nice...but where's the logo? ;)
Nice remark!!.. The glue was curing overnight
;)
Did you build the cabinet?

The one I did last year is similar for that 18W build:
viewtopic.php?f=4&t=25367

I just don't like the controls at the top back, inconvenient. Then again, the thing I HATE about my Fender Twin Reverb is the switches in the back. But, they had to put the logo somewhere, I guess...

Yep I built them both from scratch. The cut-outs even done by hand. My TMB tremolo has the standard top control and my classic is front controlled.
You're right about switches on fenders. The thing that bothers me most is that they don't have a standard spot for those switches. It depends on the type...
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Re: TMB tremolo part deux

Post by roadshow »

Nice work,

Along with the 18W BB I copied the link in my last reply, here's the Marshall 4x12 slant I built:
viewtopic.php?f=7&t=25652
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Re: TMB tremolo part deux

Post by Bieworm »

roadshow wrote: ↑
Tue 06/09/20 10:04 pm
Nice work,

Along with the 18W BB I copied the link in my last reply, here's the Marshall 4x12 slant I built:
viewtopic.php?f=7&t=25652
Nice man!!!
The hardest part is getting a straight and tight grill cloth... oh man that's a sweat job!!!

The coolest combo I made was building a 3x10 combo for my vibrolux reverb.
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Re: TMB tremolo part deux

Post by Bieworm »

for the record.. after 2 band practices I decided I wanted a little more preamp dirt. I changed the 2.2K resistor over the .68uf cap to 1.88k (1.5K + 470R in series) I will have the next practice next thursday.. will report back after that. Eventually I will put a 1.5K with a 680R in series with a switch to lift/bypass the 680R.

Edit: heck!!! Did it just now anyway!!! It's promising :)
15927585078767220445013808822157.jpg
15927585336596330126238314799309.jpg
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Re: TMB tremolo part deux

Post by TheCoda »

Bieworm wrote: ↑
Wed 04/22/20 1:47 pm
New voltage chart..after the PR mod. 15V zeners + UF diodes
The fizz is 99% gone. Did recording before and after. Full blast ...

Before PR mod:
https://www.dropbox.com/s/sh56wppb87ti6 ... 3.m4a?dl=0

After PR mod:
https://www.dropbox.com/s/sh56wppb87ti6 ... 3.m4a?dl=0
I'm reading through the thread and listening to your clips. Are you aware the two links above are the same? :D
Nice playing and a great sound BTW.
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Re: TMB tremolo part deux

Post by Bieworm »

TheCoda wrote: ↑
Sat 10/24/20 8:45 am
Bieworm wrote: ↑
Wed 04/22/20 1:47 pm
New voltage chart..after the PR mod. 15V zeners + UF diodes
The fizz is 99% gone. Did recording before and after. Full blast ...

Before PR mod:
https://www.dropbox.com/s/sh56wppb87ti6 ... 3.m4a?dl=0

After PR mod:
https://www.dropbox.com/s/sh56wppb87ti6 ... 3.m4a?dl=0
I'm reading through the thread and listening to your clips. Are you aware the two links above are the same? :D
Nice playing and a great sound BTW.
Thx!! I left the amp like that .. very fine piece of equipment πŸ˜€
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