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

Posted: Tue Jan 14, 2020 12:20 pm
by wdelaney72
Duke....really cool to hear that spec all polished and mastered. Great tune....always love playing that one in my prior cover band that had a female lead vocalist. Really great playing. The #36 is in there for sure!

BRM....you've got it all there. Killer. Raw and perfect with the delay.

Now that I've gotten my #36 where I'm happy with it, I've opted to ditch the Alnico II pickups. They're Slash....they're great...but those pickups are so bright, yet alone the brightness of the #36 spec. I tend to prefer not having to adjust the tone know so much. For me I've settled on the Duncan 59/custom Hybrid. Not as bright but plenty of tightness.

My current cover band, I'm either using my 2 channel #36 or my half super-lead / half soldano SLO clone. I like both for different reasons and just go with whatever my mood is for the day

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

Posted: Tue Jan 14, 2020 1:21 pm
by novosibir
Recently I've accomplished a Marshall mod for a customer in the USA
After reading the description you may imagine, on what this mod is based :D
Check it out:

https://www.facebook.com/permalink.php? ... &__tn__=-R

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

Posted: Tue Jan 14, 2020 1:38 pm
by CoffeeTones
Nice one Larry :toast:

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

Posted: Tue Jan 14, 2020 1:39 pm
by wdelaney72
novosibir wrote:
Tue Jan 14, 2020 1:21 pm
Recently I've accomplished a Marshall mod for a customer in the USA
After reading the description you may imagine, on what this mod is based :D
Check it out:

https://www.facebook.com/permalink.php? ... &__tn__=-R
This proves George Lynch should have recorded with a Les Paul Custom.

Sound perfect.

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

Posted: Wed Jan 15, 2020 4:42 am
by BRMSlash
herbvis wrote:
Sun Jan 05, 2020 10:17 am
Sounds good. Nice and smooth
Thanks. Yeah I think the treble is a lot more controlled now.
wdelaney72 wrote:
Tue Jan 14, 2020 12:20 pm
BRM....you've got it all there. Killer. Raw and perfect with the delay.
Thanks for the kind words. Cheers.

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

Posted: Wed Jan 15, 2020 3:00 pm
by dukeamps
@ wdelaney72

Cheers, i love playing that song too :toast:

@larry great work :) Now give us all the details of the mod lol

:toast:

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

Posted: Wed Jan 15, 2020 9:37 pm
by novosibir
dukeamps wrote:
Wed Jan 15, 2020 3:00 pm
Now give us all the details of the mod lol
My bank details are... :D

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

Posted: Thu Jan 16, 2020 10:40 am
by wdelaney72
Larry,
I'm guessing the mod is 99% close to what's been debated here in the thread.

What's clearly different is how you arranged the board and cleaned up lead dress...something that's a major ingredient to your amps.

I will ask....did you go DC or elevated heaters on pre-amp?

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

Posted: Thu Jan 16, 2020 11:01 am
by CoffeeTones
Larry, have you used any of the Dino heritage in this amp? I believe I hear some ceramic caps affecting the upper mids but those ceramic caps may be stock as well.

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

Posted: Thu Jan 16, 2020 11:06 am
by novosibir
wdelaney72 wrote:
Thu Jan 16, 2020 10:40 am
Larry, I'm guessing the mod is 99% close to what's been debated here in the thread.
S.I.R. #39 mod, altogether 12 components, 2 components w/ another value = 83% :D
input grid stopper = 18K instead of 68K (remarkable hiss reduction)
the SIR voltage divider 470K || 470p / 220K changed to 470K || 470p / 470K
wdelaney72 wrote:
Thu Jan 16, 2020 10:40 am
What's clearly different is how you arranged the board and cleaned up lead dress...something that's a major ingredient to your amps.
I've first accomplished the mod, so I've had a before/after cleaning the lead dress - a remarkable difference
Very important: Have an eye to the violet lead to the Presence pot and keep it away from the tone control leads AND from the OT's primaries :wink:
wdelaney72 wrote:
Thu Jan 16, 2020 10:40 am
I will ask....did you go DC or elevated heaters on pre-amp?
Neither, nor - I even kept the heater's CT at its orig. spot next to the PT

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

Posted: Thu Jan 16, 2020 11:14 am
by novosibir
CoffeeTones wrote:
Thu Jan 16, 2020 11:01 am
I believe I hear some ceramic caps affecting the upper mids...
My photos have answered your question?

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

Posted: Thu Jan 16, 2020 11:22 am
by CoffeeTones
Sure :lol: Thanks Larry. We appreciate your sharing this with us. I see other, unseen things too! :scratch:

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

Posted: Thu Jan 16, 2020 11:29 am
by novosibir
What else can you see, what maybe I didn't see?

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

Posted: Thu Jan 16, 2020 11:47 am
by CoffeeTones
Nothing you didn't see. I was speaking of the lead adjustments. Of coarse this is different in every amp, so no need to try and copy any lead dress.

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

Posted: Thu Jan 16, 2020 2:00 pm
by novosibir
CoffeeTones wrote:
Thu Jan 16, 2020 11:22 am
Thanks Larry. We appreciate your sharing this with us.
Not for this. It wasn't my intellectual property 8)