S.I.R. 100W SuperLead Schematic pt. II

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sonoman1979
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by sonoman1979 » Fri Jun 30, 2017 1:07 am

Hi,

I think this is the best I can do with my JTM60 1x12 cab, not excaltly AFD tone but I think I like this:

https://soundclick.com/share.cfm?id=13649102
Last edited by sonoman1979 on Sun Oct 29, 2017 4:14 am, edited 3 times in total.

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by BRMSlash » Tue Jul 18, 2017 6:36 pm

Tightened up the treble by replacing all the silver mica caps with X5F or C0G 1kV ceramics. Also changed all the cathode bypass caps to 250V MKT1813's, except for the 1st stage which is a 100V version. Replaced all the metal film resistors I had in the cathodes, except for one, with carbon films. Cathodes tweaked slightly to 3k3, 2k7, 10k, 1k2 in order from 1st stage to last stage.

http://sclk.co/s83jcl

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by snakepit86 » Fri Aug 04, 2017 7:37 pm

BRMSlash wrote:Tightened up the treble by replacing all the silver mica caps with X5F or C0G 1kV ceramics. Also changed all the cathode bypass caps to 250V MKT1813's, except for the 1st stage which is a 100V version. Replaced all the metal film resistors I had in the cathodes, except for one, with carbon films. Cathodes tweaked slightly to 3k3, 2k7, 10k, 1k2 in order from 1st stage to last stage.

http://sclk.co/s83jcl
about the MF resistors in the cathodes replaced by carbon, what do you want to reach?

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by BRMSlash » Mon Aug 07, 2017 6:20 pm

Too many metal film resistors made the treble too prominent & loose. The carbon films seemed to calm things down and give a more natural tone. I kept one metal film in the 2nd stage cathode partial bypass as it helped to maintain clarity (carbon filmed in this position was a bit thick sounding).

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by CoffeeTones » Mon Aug 07, 2017 11:09 pm

sonoman1979 wrote:
I think this is the best I can do with my JTM60, not excaltly AFD tone but I think I like this:

http://soundclick.com/share.cfm?id=13593454
Man this sounds really good. :thumbsup:

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by Roe » Sun Sep 10, 2017 11:08 am

The CAE3+ lead channel looks surprisingly similar to a #39 preamp: http://www.lordriffenstein.com/images/cae-3+.jpghttp://f.defaut.free.fr/perso/DIY/CAE%203_SE.bmp
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by sonoman1979 » Sun Sep 17, 2017 2:34 am

CoffeeTones wrote:
Mon Aug 07, 2017 11:09 pm
sonoman1979 wrote:
I think this is the best I can do with my JTM60, not excaltly AFD tone but I think I like this:

http://soundclick.com/share.cfm?id=13593454
Man this sounds really good. :thumbsup:
Thanks Duane, but I have to modify the amp again because I found a bad solder joint inside the control of my les paul, and after re-solder that, the pickups were giving more output and the tone of the amp was a mess :palm: . After a few weeks trying different values I think now is ok again, this is a new recording without any post eq or post reverb added, I really think that if I try this on a 4x12 cab will sound much better.



:thumbsup:
Last edited by sonoman1979 on Sun Oct 29, 2017 1:16 pm, edited 1 time in total.

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by CoffeeTones » Sun Sep 17, 2017 10:03 am

Yes, I agree with the 4 x 12 or even a 2 x 12 cab. Overall the sound is fine. It only needs to be thicker in the mids IMO. :thumbsup:

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by sonoman1979 » Tue Sep 19, 2017 3:52 am

CoffeeTones wrote:
Sun Sep 17, 2017 10:03 am
Yes, I agree with the 4 x 12 or even a 2 x 12 cab. Overall the sound is fine. It only needs to be thicker in the mids IMO. :thumbsup:
You're right Duane, do you think this one is better? Maybe I need to rest my ear a couple of days, sometimes fatigue makes hear things different.
Last edited by sonoman1979 on Sun Oct 29, 2017 1:16 pm, edited 1 time in total.

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by CoffeeTones » Tue Sep 19, 2017 11:40 am

Fatigue can definitely get to be an issue.
Last edited by CoffeeTones on Sat Sep 23, 2017 3:17 am, edited 9 times in total.

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by reychapa » Tue Sep 19, 2017 2:13 pm


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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by CoffeeTones » Tue Sep 19, 2017 2:25 pm

reychapa wrote:
Tue Sep 19, 2017 2:13 pm
[youtube]https://www.youtube.com/watch?v=T-jxZbkWVrE[/youtube]

:D
LOL, I remember when you first jumped into this thread. The amp sounds cool.

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by reychapa » Tue Sep 19, 2017 2:42 pm

Thanks too much to you I found my tone, now that I have a better sample of audio, I share with you this video!...

:thumbsup:

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by sonoman1979 » Tue Sep 19, 2017 5:51 pm

CoffeeTones wrote:
Tue Sep 19, 2017 11:40 am
Fatigue can definitely get to be an issue. The mids have lost the right frequency, too squishy plus the gain is not right in that clip. If you could retain the gain and bite from the previous clips and push the mids a little, it would be there. A method I use, is trying many different value caps across the 4th stage 820R cathode. 10uF is great in my amps. 2.2uF works good to tighten bass but looses the mids I like. Below 2.2uF gets too thin for me. That cap increases gain very little but is a sensitive adjustment for tone because like the NFB, it can add or take away some nice character.....
Thanks Duane, I will try some other values then. Thank you :thumbsup:
Last edited by sonoman1979 on Sun Oct 29, 2017 1:18 pm, edited 1 time in total.

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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by Roe » Fri Sep 22, 2017 3:22 am

Roe wrote:
Sun Sep 10, 2017 11:08 am
The CAE3+ lead channel looks surprisingly similar to a #39 preamp: http://www.lordriffenstein.com/images/cae-3+.jpghttp://f.defaut.free.fr/perso/DIY/CAE%203_SE.bmp
Any comments on this? the typology of the CAE is very similar but the voicing may be somewhat different?
Last edited by Roe on Fri Sep 22, 2017 4:06 pm, edited 1 time in total.
http://www.myspace.com/20bonesband" onclick="window.open(this.href);return false;
http://www.myspace.com/prostitutes" onclick="window.open(this.href);return false;
Super 100 amps: 1202-119 & 1202-84
JTM45 RS OT JTM50 JMP50 1959/2203/34/39

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