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

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

Post by CoffeeTones » Tue Jun 08, 2021 4:28 pm

Last edited by CoffeeTones on Tue Jun 08, 2021 10:23 pm, edited 1 time in total.

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

Post by gluke » Tue Jun 08, 2021 4:57 pm

That’s his handwritten notes? That is awesome!
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by BRMSlash » Tue Jun 08, 2021 6:11 pm

Thanks for sharing CoffeeTones. There's some good info in there.

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

Post by gluke » Wed Jun 09, 2021 4:35 am

CoffeeTones wrote:
Tue Jun 08, 2021 2:49 pm
So much gain, the amp is choking and sounding un-natural.
That's mostly me just using the same settings as the other spec with all the extra gain available. I didn't have time to play around much with the settings and Duke recommended keeping them quite a bit lower. I got a bit carried way that I got it working, ha ha ha....
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by gluke » Thu Jun 10, 2021 6:41 am

dukeamps wrote:
Mon Jun 07, 2021 10:41 am

So i think its getting a bit out of control but still sounds not too bad, if you want, change the second stage to 5k7 ,22u

PS, before you do the 5k7.22u change, you could parallel a 100k with the NFB resistor to tighten the amp up a bit.
Done! Will try to make some clips later if I get the house to myself.
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by gluke » Thu Jun 10, 2021 9:26 am

Gluke

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

Post by dukeamps » Thu Jun 10, 2021 10:53 am

gluke wrote:
Thu Jun 10, 2021 9:26 am
Daily clipage....

WTTJ:
https://youtu.be/Uo9NZd3oHHc

WTTJ Solo1:
https://youtu.be/zrwMZ1HVh8s
Sounds good, what is the full spec?

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

Post by gluke » Thu Jun 10, 2021 11:01 am

dukeamps wrote:
Thu Jun 10, 2021 10:53 am

Sounds good, what is the full spec?
You’r asking me? I’m trying to follow your directions here 😂

Let’s see if I managed. It should be this now:

2k7/.68/.022/470k+500p/5n/220k on pot

5k6/.22/.022/470k+470p/470k

3k3/.47/.022

820

50k (2x100k) 4 Ohm .68
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by gluke » Thu Jun 10, 2021 11:16 am

It is extremly sensitive to gain settings though. The clips are at 4 and 3,5 and the difference between 3 and 3,5 is very audible.
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by dukeamps » Thu Jun 10, 2021 11:28 am

gluke wrote:
Thu Jun 10, 2021 11:01 am
dukeamps wrote:
Thu Jun 10, 2021 10:53 am

Sounds good, what is the full spec?
You’r asking me? I’m trying to follow your directions here 😂

Let’s see if I managed. It should be this now:

2k7/.68/.022/470k+500p/5n/220k on pot

5k6/.22/.022/470k+470p/470k

3k3/.47/.022

820

50k (2x100k) 4 Ohm .68
I was asking because you were changing things up a bit, and i had sort of lost track, yep you have a lot of gain on tap now. What do you think of this spec compared to the best spec ?

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

Post by dukeamps » Thu Jun 10, 2021 11:30 am

gluke wrote:
Thu Jun 10, 2021 11:16 am
It is extremly sensitive to gain settings though. The clips are at 4 and 3,5 and the difference between 3 and 3,5 is very audible.
you could also put a 220k on the other gain pot to make it a bit more usable.

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

Post by gluke » Thu Jun 10, 2021 12:07 pm

dukeamps wrote:
Thu Jun 10, 2021 11:28 am

I was asking because you were changing things up a bit, and i had sort of lost track, yep you have a lot of gain on tap now. What do you think of this spec compared to the best spec ?
It just took me a while to get the shielded cables right. The first I was using kept shorting out on me.

It’s kinda weird, in some ways that other spec overall sounds «better» and fuller and is much more forgiving, but if you get this one dialed in just right then there is something happening on the intro to WTTJ and SCOM that is more «right» to my ears. It has that combo of chunk and stringyness that I have been chasing.
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by dukeamps » Thu Jun 10, 2021 12:52 pm

gluke wrote:
Thu Jun 10, 2021 12:07 pm
dukeamps wrote:
Thu Jun 10, 2021 11:28 am

I was asking because you were changing things up a bit, and i had sort of lost track, yep you have a lot of gain on tap now. What do you think of this spec compared to the best spec ?
It just took me a while to get the shielded cables right. The first I was using kept shorting out on me.

It’s kinda weird, in some ways that other spec overall sounds «better» and fuller and is much more forgiving, but if you get this one dialed in just right then there is something happening on the intro to WTTJ and SCOM that is more «right» to my ears. It has that combo of chunk and stringyness that I have been chasing.
:toast:

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

Post by snakepit86 » Thu Jun 10, 2021 1:26 pm

Hold on a minute.... where did you get this? this is awesome hehe

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

Post by reychapa » Sun Jun 13, 2021 6:02 pm

Can u see how this values is similar a silver jubilee circuit? :scratch:

It was close Marshall?, also taking Jose into account with clipping diodes options


PD: Thanks CafeeTones!! :thumbsup: :thumbsup:

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