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

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snakepit86
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by snakepit86 » Thu Nov 30, 2017 8:03 pm

great work!

i see you are using the AFD izzy Mix i ulpoeaded

which speaker are you using?

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

Post by BRMSlash » Thu Nov 30, 2017 11:11 pm

sonoman1979 wrote:
Thu Nov 23, 2017 3:06 pm
Hi,
I need to replace a couple of 47uf 450v aluminum electrolytic capacitor on the preamp section. Must be radial and no more than 18mm of diameter. I would like to know if anybody knows which series of Nichicon should be best for this application.
I'm planing to buy this on mouser.
Technical support on mouser told me that I should choose caps that offer more hours of life and high ripple current, is that correct?
Thanks.
From my experience, generally go for the physically largest cap you can get. Looking at what's available from mouser and referencing the Nichicon website, I'd choose the UCA series cap. It has high ripple current, low tangent of loss angle and long life.
https://au.mouser.com/Nichicon/Passive- ... 41Z1ywv0lc
http://www.nichicon.co.jp/english/produ ... agram.html

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

Post by dukeamps » Fri Dec 01, 2017 3:39 am

snakepit86 wrote:
Thu Nov 30, 2017 8:03 pm
great work!

I see you are using the AFD Izzy Mix I uploaded

which speaker are you using?
Cheers :)

Speakers are Scumback M75 65w, the old ones that Weber was making.

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

Post by Prowler » Sat Dec 02, 2017 8:14 am

Here's my #36 clip:

https://www.dropbox.com/s/wj5lso7tfpbty ... 7.mp3?dl=0

I am using Greenback G12M 25W speakers.

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

Post by sonoman1979 » Thu Dec 07, 2017 9:58 am

BRMSlash wrote:
Thu Nov 30, 2017 11:11 pm
sonoman1979 wrote:
Thu Nov 23, 2017 3:06 pm
Hi,
I need to replace a couple of 47uf 450v aluminum electrolytic capacitor on the preamp section. Must be radial and no more than 18mm of diameter. I would like to know if anybody knows which series of Nichicon should be best for this application.
I'm planing to buy this on mouser.
Technical support on mouser told me that I should choose caps that offer more hours of life and high ripple current, is that correct?
Thanks.
From my experience, generally go for the physically largest cap you can get. Looking at what's available from mouser and referencing the Nichicon website, I'd choose the UCA series cap. It has high ripple current, low tangent of loss angle and long life.
https://au.mouser.com/Nichicon/Passive- ... 41Z1ywv0lc
http://www.nichicon.co.jp/english/produ ... agram.html
Thank you BRMSlash, I've already ordered UCS ones, I hope those one to be ok too.

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

Post by Unique » Thu Dec 07, 2017 7:50 pm

Duke this sounds great, I think all of the different speakers you use in your samples are just variant flavors of it. You have definitely nailed the #36 tone! Congrats!

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

Post by dukeamps » Fri Dec 08, 2017 11:05 am

Unique wrote:
Thu Dec 07, 2017 7:50 pm
Duke this sounds great, I think all of the different speakers you use in your samples are just variant flavors of it. You have definitely nailed the #36 tone! Congrats!
Thank you very much for your kind words :)

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

Post by blacklabel » Sun Dec 10, 2017 7:56 am

dukeamps wrote:
Fri Dec 08, 2017 11:05 am
Unique wrote:
Thu Dec 07, 2017 7:50 pm
Duke this sounds great, I think all of the different speakers you use in your samples are just variant flavors of it. You have definitely nailed the #36 tone! Congrats!
Thank you very much for your kind words :)
Dukeamp can you do some clip with these speakers Scumback M75 and Marshall 800 mod #34 ?
do you have a marshall with #34 mod?
i want to listen UYI tone with these greenback's clone :rock:

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

Post by dukeamps » Sun Dec 10, 2017 12:19 pm

.
Last edited by dukeamps on Sun Dec 10, 2017 2:30 pm, edited 1 time in total.

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

Post by dukeamps » Sun Dec 10, 2017 2:33 pm

blacklabel wrote:
Sun Dec 10, 2017 7:56 am
dukeamps wrote:
Fri Dec 08, 2017 11:05 am
Unique wrote:
Thu Dec 07, 2017 7:50 pm


Duke this sounds great, I think all of the different speakers you use in your samples are just variant flavors of it. You have definitely nailed the #36 tone! Congrats!
Thank you very much for your kind words :)
Dukeamp can you do some clip with these speakers Scumback M75 and Marshall 800 mod #34 ?
do you have a marshall with #34 mod?
i want to listen UYI tone with these greenback's clone :rock:
I have made this clip for you, i have never played this song before, but you should get an idea how the greenback clones sound.

BTW i had to use the 36 mod, because the 34 mod didnt have enough gain.

https://soundclick.com/share.cfm?id=13666360


:toast:

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snakepit86
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Re: S.I.R. 100W SuperLead Schematic pt. II

Post by snakepit86 » Fri Dec 15, 2017 10:19 am

[youtube]https://www.youtube.com/watch?v=k3MKiVThA0w&t=217s[/youtube]


i just made that video for the #34 mod with a little changes

Im fully going now for the #36 tone.

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

Post by CoffeeTones » Fri Dec 15, 2017 10:46 am

No offense, but it sounds thin and dry. Not much harmonics. Do you have a schematic to show?

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

Post by framos » Fri Dec 22, 2017 2:28 pm

Hi guys,

Just wanted to thank you all for the "infinite" amount of information regarding SIR 36 and 34 mod collected over the years in this thread. I've been reading it for a while now, and this is my first post here.

As a novice builder, I just did a #34 on top of a Ceriatone 2204 kit, and it sounds great! Will post a clip soon!

For the record, I did not use a hot shield and removed the 1000pf bright cap on the volume pot (against my own will, I love it on the stock 2204). Although it deviated a bit from the original mod spec, with the bright cap on, my amp was oscillating a bit with the preamp past 7. Without it, the oscillation is gone, and as a good side effect, I find the presence and treble controls now much more useable.

Cheers! :rock:

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

Post by jarrodthebobo » Wed Jan 17, 2018 9:21 am

Hey guys, been following this thread for about a month and loving all the information posted and finally decided to sign up to post my little 'adventure'...

I've been meaning to fully build a nice Marshall style amp for a very long time; so why not build one of the most iconic Marshalls known to man?!!? Hah!

It's been a long journey, but its been very fun; and I think I've gotten close to where I want to be on this guy.

It's a nice little combo with sexy wine red tolex. I really want to change the faceplate, as it's a recycled epiphone valve special chasis and quiet ugly atm, but it does its duty.

The preamp is based on the many different #34 circuits that have been posted; but with many extra tweaks, including the second gain control after V1B common to the #36 and #39 mods. I also have cathode switches for each stage; giving me multiple different flavors of tone depending on my mood.

The amp is actually single ended and utilizes a el84 and 6v6 in parallel, which actually yields a VERY nice power tube distortion sound; the fattness of a 6v6 and the bite of an el84; gives a very close 'big bottle' tone, and the amp is one of the loudest amps I've ever heard under 20 watts.

Recently I had just used it at one of my bands shows, and I had to keep it at about 1-2 on the master volume as I was drowning out our drummer, who isn't necessarily quiet. Using this amp through a 4x12 is deafening.

I'll get you guys better clips soon (as my new m-audio 2x2 has finally come in), but in the meantime, take this video and soundcloud clip (which was recorded direct in from the effects send (which was harshly clipping the fast track... whoops)).

https://soundcloud.com/jarrod-beauchemi ... ct-in-test


Since these recordings I've change around some treble peakers, cleaned up some solder joints, and added a 500k for the send volume of the effects loop, so better tones are to come!

The soundcloud clip includes me switching around a bunch of those cathode switches, and then using the second channel (which is a Typical plexi circuit cascaded instead of parallel) towards the end.
Enjoy!

-Jarrod
"I hear you knocking but you can't come in-
I know you've been drinking Gin." -Louis Jordan

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

Post by Unique » Wed Jan 17, 2018 2:01 pm

snakepit86 wrote:
Fri Dec 15, 2017 10:19 am
[youtube]https://www.youtube.com/watch?v=k3MKiVThA0w&t=217s[/youtube]


i just made that video for the #34 mod with a little changes

Im fully going now for the #36 tone.
I think this sounds pretty darn good. The only issue I hear is that maybe the mic was clipping with your camera, or whatever you used to record it some, but the tone itself, and the character of the amp sounds pretty spot on. Nice job snakepit86!

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