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

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

Post by gluke » Thu Apr 29, 2021 2:51 am

Unique wrote:
Wed Apr 28, 2021 7:11 pm
That sounds pretty good, and very close, if not there. Like all the samples here, it's hard to determine how close due to hearing them through a computer. But all of the character sounds appear to be there. Congrats!
Thanx!

Yeah, and like you said earlier, AFD was done on 35 year old recording equipment vs clips on an iPhone video.....

Now if we could just get our hands on Mike Clink's notes where his assistant noted and took pictures of all the amp settings for each song. They tracked everything in case they had to go back and redo something.......

It is very similar to what Duke posted on the last page but shoot me a PM if you want the details and thanx so much for lending your ears!
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BRMSlash
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by BRMSlash » Fri Apr 30, 2021 12:24 am

Nice to have some action back in this thread! It's got me back tweaking again. This time I've been mainly trying to tame the harsh/loose highs.

I've changed both 0.1uf's to 200v 225p's. Changed bright cap & adjacent peaker cap to 50v z5u's. Also put all my B+ resistors back to 10k or 18k, which I then needed to change the 1st two 12ax7's to a different type (Electro-Harmonix) due to the lower voltage, to get back some gain & grit. Also changed the 2nd stage to be more like a jubilee with 100k/220k input into the 2nd tube with a 1k5 cathode.

https://soundclick.com/r/s8h7pa

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

Post by gluke » Mon May 10, 2021 10:54 am

Hei, didn't mean to slow down the tread but I had kinda exhausted all the Slash lick I knew so I had to learn some new ones. I keep going back to this spec although I'm not really sure it is the right one 'cause it does'nt quite seem bright enough but it's so fun to play. And I learned my first Slash solo so you can hear what single note stiff sounds like. It was a pain 'cause all the YT'ers are way off with their tab's and stuff and I don't really have time for this shit but damn I keep getting sucked further and further down this rabbit hole...

So fat spec with .022 first stage and .68 presence and now with Alnico II HB in the guitar.

WTTJ
https://www.youtube.com/watch?v=C9VV4fLAmOA

WTTJ Solo
https://www.youtube.com/watch?v=f_iMPRu0XvA
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CoffeeTones
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by CoffeeTones » Mon May 10, 2021 12:20 pm

Solo is fine, the other is smooth and thick. Might try a little more NFB - 56k to 91k @ 4R, or 15k to 22k PI tail, or smaller value presence cap - .1 to .47uF. If you choose to go that far, the 25k presence circuit might do the trick as well. That will definitely take away some tubbiness, give more top end and sizzle.

Don't get me wrong the amp sounds good, just giving you options based on what I hear. Any of the mods above will take the sound in the direction you suggested you might want to go. It's up you you which you prefer. Obviously start with the easier mods first.

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

Post by Unique » Mon May 10, 2021 2:49 pm

Those sound really good, and good playing too!

What pot values do you have in your guitar and where's your pickup height at? Sometimes your amp may be close, or right and it's how you have your guitar set up that's taking something away from the sound. You definitely want 500k pots, around 550k if your using modern CTS pots. CTS pots can sound kind of muddy and peak in the high mids. Slash has DiMarzio rebranded Centralabs in the Derrig and Centralabs are much brighter with less mud and warmer highs than todays modern pots. The mids are slightly lower than how they sound with CTS pots. Just to give you an idea of how Centralabs compare to modern CTS pots, I have some Centralab pots that measured from 494k to 505k that I replaced some CTS made 'RS Guitarworks Superpots' with that measured 551k to 560k and the Centralab pot were much brighter and more open sounding than the CTS pots. Yet the highs were warmer, with a lot less mud in the sound. I quickly learned how much the Centralab pots play an important part in Slash's recorded sound, as well as the late 50's Bursts. Once you hear their sound, you will instantly recognize it.

As far as pickups go, according to Ace, Slash has both pickups in his Derrig set between 4/64" and 6/64". Possibly up to 7/64" with the neck. From looking at pics of the Derrig from back in the day, I'd say he hasn't changed them much. Raising your pickups will brighten up the tone somewhat. I'd start at 4/64" and tweak from there. APH1's are pickups you can have closer to the strings and not worry about them 'woofing' too much. Slash also sets the bridge pickup's screws to the radius of the fretboard with the low E screw setting flush and the high E screw 1/2 turn lower. Adjust the rest to the equal distance as the others, with the G screw setting the highest, maybe two full turns, and D close to it, but slightly lower by a half turn. The A and B screws are about the same height. Raising these will also increase the brightness of the pickup overall and give you pickup more balance.

For how he sets the neck screws, they are much lower, almost flush. He sets the high E the same as his bridge High E, and the low E, only about a quarter turn down from flush, with the D and B screws about the same, 1/2 turn up, and the G screw 1 full turn up. From pics I've looked at, it appears he rarely, if ever, changes how he sets his neck screw heights. They always look the same. Lowering the neck screws will increase the brightness of the pickup as it brings the screw coil closer to the slug coil, and equalizes the sound more evenly between them giving you a brighter neck pickup. Adjusting the screws like this gives you more balance verses having them flush. If you raise the neck screws too high, your pickup will get muddy as your bringing the lower sounding coil up in volume when doing this.

I'm sure you know this, but I just want to put it out there for others to think about if they're close. It always amazes me how much you can tweak your sound through the pickups alone.

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

Post by dukeamps » Mon May 10, 2021 4:29 pm

gluke wrote:
Mon May 10, 2021 10:54 am
Hei, didn't mean to slow down the tread but I had kinda exhausted all the Slash lick I knew so I had to learn some new ones. I keep going back to this spec although I'm not really sure it is the right one 'cause it does'nt quite seem bright enough but it's so fun to play. And I learned my first Slash solo so you can hear what single note stiff sounds like. It was a pain 'cause all the YT'ers are way off with their tab's and stuff and I don't really have time for this shit but damn I keep getting sucked further and further down this rabbit hole...

So fat spec with .022 first stage and .68 presence and now with Alnico II HB in the guitar.

WTTJ
https://www.youtube.com/watch?v=C9VV4fLAmOA

WTTJ Solo
https://www.youtube.com/watch?v=f_iMPRu0XvA


Sounds good. Maybe you could try a GE-7 EQ with a frowny face up front. Levi mentioned one time that Slash used pedals.

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

Post by gluke » Tue May 11, 2021 2:28 am

CoffeeTones wrote:
Mon May 10, 2021 12:20 pm
Solo is fine, the other is smooth and thick. Might try a little more NFB - 56k to 91k @ 4R, or 15k to 22k PI tail, or smaller value presence cap - .1 to .47uF. If you choose to go that far, the 25k presence circuit might do the trick as well. That will definitely take away some tubbiness, give more top end and sizzle.
The .1 has been in and out like 5 times now. But I tell you once you stick the .68 in there it's like crack..... you just go ooooohhhhh that's nice.... Then you put the .1 back in and your brain reminds you on how sweet that .68 was and all goes south from there..... I guess this is the point where a switch would be an idea. I will see if I can get that 25k in there and do some clips with that at one point.
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gluke
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by gluke » Tue May 11, 2021 2:32 am

Unique wrote:
Mon May 10, 2021 2:49 pm
Those sound really good, and good playing too!
Thanx man! Not often I can be bothered to learn a song twice. After I went on YT and saw Slash live I realized I was playing it ass backwards. Vers in open position and chorus up high. He off course plays the vers on the low E and the chorus in open position..... DOH!
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gluke
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by gluke » Tue May 11, 2021 2:41 am

Unique wrote:
Mon May 10, 2021 2:49 pm
I'm sure you know this, but I just want to put it out there for others to think about if they're close. It always amazes me how much you can tweak your sound through the pickups alone.
Actually I don't. As I mentioned earlier I'm an amp guy not a GnR or Slash guy. Everything I know about this I'v learned reading this tread 3 times....

I went back and watched the Seymour Duncan pickup video and I think that shows pretty good what you are talking about so I'll go to work on my guitar but damn that is pretty low strings to the pickup. I had no idea and never have them that close. Unless my fraction off an inch to mm conversion is way off, ha ha ha..... you guys.... but you can see the meter when Seymour is measuring and it's definitely not a big gap on the bridge PU but the neck seems PU quite a bit lower.

https://imgur.com/tz4bUcc
Last edited by gluke on Tue May 11, 2021 3:21 am, edited 4 times in total.
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gluke
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by gluke » Tue May 11, 2021 2:44 am

dukeamps wrote:
Mon May 10, 2021 4:29 pm
Sounds good. Maybe you could try a GE-7 EQ with a frowny face up front. Levi mentioned one time that Slash used pedals.
I would if I had one. I got a GE10 so I'll try that but I fear it will be very noicy.... This is not a quiet amp but on those ISO tracks you can really hear that #36 was not a quiet amp either. There's like open string noice all over the place at times....
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by dukeamps » Tue May 11, 2021 4:06 am

gluke wrote:
Tue May 11, 2021 2:44 am
dukeamps wrote:
Mon May 10, 2021 4:29 pm
Sounds good. Maybe you could try a GE-7 EQ with a frowny face up front. Levi mentioned one time that Slash used pedals.
I would if I had one. I got a GE10 so I'll try that but I fear it will be very noicy.... This is not a quiet amp but on those ISO tracks you can really hear that #36 was not a quiet amp either. There's like open string noice all over the place at times....
Dont use it as a boost, just for the eq, should be ok

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

Post by gluke » Tue May 11, 2021 4:12 am

Unique wrote:
Mon May 10, 2021 2:49 pm
It always amazes me how much you can tweak your sound through the pickups alone.
Here you go! Newly adjusted pickup poles and height.

Nightrain
https://www.youtube.com/watch?v=nzLrCQn-2pQ

WTTJ other solo
https://www.youtube.com/watch?v=kjSD9ZnnUFg
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gluke
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by gluke » Tue May 11, 2021 4:29 am

dukeamps wrote:
Tue May 11, 2021 4:06 am
Dont use it as a boost, just for the eq, should be ok
Ok, I'll give it a go when I'm alone again. It is a bit loud so I try to record when everybody is out of the house..... which is not that often these dayz.
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by dukeamps » Tue May 11, 2021 5:18 am

gluke wrote:
Tue May 11, 2021 4:29 am
dukeamps wrote:
Tue May 11, 2021 4:06 am
Dont use it as a boost, just for the eq, should be ok
Ok, I'll give it a go when I'm alone again. It is a bit loud so I try to record when everybody is out of the house..... which is not that often these dayz.
Yep i know that feeling lol, these amps are so loud its unbelievable. :rock:

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

Post by Unique » Tue May 11, 2021 10:59 am

dukeamps wrote:
Mon May 10, 2021 4:29 pm
Sounds good. Maybe you could try a GE-7 EQ with a frowny face up front. Levi mentioned one time that Slash used pedals.
From what I've learned, Slash never used the GE-7 in the studio, only live, and that was to boost for solo's. In the studio, Slash never used any pedals outside of a wah. So using any pedal with your amp is going to immediately take you down the wrong path if your wanting to nail the #36 or #34 sound.

Funny, I've read that email from Frank that was posted here some time ago where he mentions the Boss GE-7. But what's odd about all that Frank wrote, giving his thoughts on Slash's UYI tone and even claiming he figured out that tone years ago, is the fact that he did not mention his mod in the amp amp Slash used? He mentions a modded Marshall, but says nothing about it being his mod. And, he talks about Slash using Jubilee's for UYI, which never happened. By the time that album was recorded and almost finished, Jubilees were just coming out. After reading his comments, I came to the conclusion that Frank must have not even recognized the sound of his own mod. Surely if he did, he would have cut to the chase and said something like, "Oh yeah, Slash was using an amp I modded to achieve that sound." But not one word was mentioned about his mod and he gives the credit to the UYI sound to EL34 tubes (???), Jubilee's, and a GE-7. It's possible that he also didn't want to brag. But the whole thing is a head scratcher as most of it is off by a wide margin about the UYI sound. Frank knew amps, but he was clueless on Slash UYI tone and most of what he said in that email was internet myth.

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