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

bennyx · Post by **bennyx** » Tue Oct 13, 2015 7:16 am

i have change bias....tone stack 500pf

https://www.youtube.com/watch?v=bw_S9Dwx-V0

dukeamps · Post by **dukeamps** » Wed Oct 14, 2015 4:23 am

Here is a NT clip from the 1993 Marshall slp 100w amp,

http://soundclick.com/share.cfm?id=13231586

I have also added the scom here again because i have done a new clip with a eq change,

http://soundclick.com/share.cfm?id=13230928

Cheers

alexhangman · Post by **alexhangman** » Wed Oct 14, 2015 8:24 am

dukeamps wrote:Here is a NT clip from the 1993 Marshall slp 100w amp,

http://soundclick.com/share.cfm?id=13231586

I have also added the scom here again because i have done a new clip with a eq change,

http://soundclick.com/share.cfm?id=13230928

Cheers

What are the settings? and especially of the master volume...

dukeamps · Post by **dukeamps** » Wed Oct 14, 2015 12:54 pm

alexhangman wrote:
dukeamps wrote:Here is a NT clip from the 1993 Marshall slp 100w amp,

http://soundclick.com/share.cfm?id=13231586

I have also added the scom here again because i have done a new clip with a eq change,

http://soundclick.com/share.cfm?id=13230928

Cheers
What are the settings? and especially of the master volume...

MV 3 or 4

rockgod212 · Post by **rockgod212** » Wed Oct 14, 2015 2:12 pm

sounds killer duke, seems like your getting some where with the el34's.

dukeamps · Post by **dukeamps** » Thu Oct 15, 2015 3:47 am

rockgod212 wrote:sounds killer duke, seems like your getting some where with the el34's.

Cheers RG, Levi said the 36 amp had el34s in it when he modded it, then shortly after that the AFD was recorded, it probably had a nice set of Mullards in it, those tubes last for years, no need to change them to 6550s.

bennyx · Post by **bennyx** » Thu Oct 15, 2015 9:18 am

Levi said the 36 amp had el34s in it when he modded it, then shortly after that the AFD was recorded, it probably had a nice set of Mullards in it, those tubes last for years, no need to change them to 6550s.

not exactly....Levi have said " 36 was born with el34, on second time are changed with 6550" none know if "the second time" was before or after AFD sessions........Slash said " very bright and louder amp"......so, IMO, on AFD session have 6550......

rockgod212 · Post by **rockgod212** » Thu Oct 15, 2015 10:57 am

yeah I would agree with benny, now that I have my amp wired up with 6550's, that's what I hear. I will post whats in my amp soon, gotta go to work, then band practice tonight. I have never played my amp with the g12-80's with the band, so we will see how it sounds on....its so easy or scom, having issues with my recording daw right now, so clips to come soon. im pretty happy with the spec im using now though, its a bit of a hybrid of the 39 spec with the xtra peaker and a 470k on gain 2- keeps the spiky highs/ mids away, as I believe I have the lead cones on my g12-80's.

dukeamps · Post by **dukeamps** » Thu Oct 15, 2015 12:26 pm

I wouldn't agree or disagree with any of the opinions here, I just try & keep an opened mind,

here is a couple of clips from my 75 JMP 100w stock amp + ppimv, with Mullard el34s, speaker g12h30 heritage, mic sm57, just for a bit of fun

NT

http://soundclick.com/share.cfm?id=13232427

SCOM

http://soundclick.com/share.cfm?id=13232428

PS these clips were not recorded very loud.

giordydiver · Post by **giordydiver** » Thu Oct 15, 2015 12:55 pm

hi, i have finished my 2203 with 6550,zero loss fx, sir 34.
it sound great but I want mod it to a AFD tone without extra tube. So i think to replace c10 to 250p and restore c4 to 500p. what do you thing? the amount of gain with #34 is good for me , i want change only the tone (fatter and darker)

there is my schematic

bennyx · Post by **bennyx** » Thu Oct 15, 2015 2:18 pm

I have change the last things....and i have the tone.....change the second mixer with 470k/2n2, remove 100pf bright and re install 100n on presence....now it's real 36....no way out

giordydiver · Post by **giordydiver** » Thu Oct 15, 2015 4:29 pm

so change c4 to 500p, c8 to 2.2n, c10 to 250p and remore brighcap? the other mods as #34?
I have seen a video about bringcap value and I could hear that it change also the amount of gain

dukeamps · Post by **dukeamps** » Thu Oct 15, 2015 4:55 pm

giordydiver wrote:so change c4 to 500p, c8 to 2.2n, c10 to 250p and remore brighcap? the other mods as #34?
I have seen a video about bringcap value and I could hear that it change also the amount of gain

If you like the 34 but just want it to sound a bit bigger, then put it back to the 34 mod & try this, change the ,47u to .68u, if thats not enough then, change the .1u over the 10k to .22u or .47u, also try .68u on the pres, & maybe change the tail resistor to 10k, hope this helps

giordydiver · Post by **giordydiver** » Thu Oct 15, 2015 5:38 pm

what cap from .47uf to .68uf? changing c4 and c10 what is the difference?

bennyx · Post by **bennyx** » Fri Oct 16, 2015 2:12 am

https://www.youtube.com/watch?v=aVsRMmCvu9I

maybe i come back to 680n presence cap......

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

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