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

BRMSlash · Post by **BRMSlash** » Fri Feb 26, 2016 3:54 pm

@ CoffeeTones - Thanks. Yeah, I agree. I did have a 0.47u on there previously. A lower value should help keep the nice mids and provide more note separation and highs. In regards to the NFB, I used a pot to fine tune, but ended up close enough to 100k, so I just kept the standard value. The NFB is on the 4R tap. I'm already using a 1n/470k peaker. Cheers.

@herbvis - Thanks. I've been tweaking the reverb to try and smooth out some of the highs. That's also part of why I increased the snubbers on the 2nd and 3rd stages.

CoffeeTones · Post by **CoffeeTones** » Fri Feb 26, 2016 5:28 pm

I've been around. Things have just been quiet, with no mysteries to solve. Still have not gotten my hands on that modded Marshall I spoke of a while back. The guy still has it though. I need to ask again. He let me look inside his Fargen modded 900 but it wasn't worth the trouble.

herbvis wrote:Where you been coffee. Been a while

herbvis · Post by **herbvis** » Fri Feb 26, 2016 6:47 pm

hope you get a chance to take a peek inside. That would be a great site.

On par with a titty bar.

BRMSlash · Post by **BRMSlash** » Fri Feb 26, 2016 7:34 pm

Just tried a 0.22 and a 0.1 on the 2nd stage cathode. There's a clear improvement in clarity, but I feel I need the in between value as 0.1 is a touch to bright and the 0.22 a touch too thick. Will have to order some 0.15's. I also tried a 1813 cap instead of the 368 that I had on that stage. I'm liking the 1813 more for that spot as it has a nice chime to it.

CoffeeTones · Post by **CoffeeTones** » Fri Feb 26, 2016 8:49 pm

You can parallel a .047uF with a .1uF for testing or till you get a .15uF, It's not hard to get the original Sozo in .15uF, at least in the US. That value works well for the situation you have. 39k slope with the .22uF stage 2, cathode bypass may satisfy you as well.

BRMSlash · Post by **BRMSlash** » Fri Feb 26, 2016 11:41 pm

I didn't think I possessed a 0.047u cap, but low and behold I found a 225p in my stash. So in it goes over the 0.1u 1813:
http://sclk.co/s7xn0a

CoffeeTones · Post by **CoffeeTones** » Sat Feb 27, 2016 1:15 am

Sounds like AFD again. A little fizz. That may be the cap type, 22k PI tail or PPIMV turned down? Otherwise pretty balanced. Are those CL80 speakers?

BRMSlash · Post by **BRMSlash** » Sat Feb 27, 2016 2:16 am

Yeah, I find that foil caps in the cathode can be a little bit fizzy or too much treble. My PPIMV is turned down for the last few clips. My speakers are Scumback H75-PVC's.

BRMSlash · Post by **BRMSlash** » Sat Feb 27, 2016 6:05 am

Put all the snubbers back to previous spec to restore clarity for cleans. Added a 220p snubber to the 4th stage though.
http://sclk.co/s7xn2l

CoffeeTones · Post by **CoffeeTones** » Sat Feb 27, 2016 9:15 am

BRMSlash · Post by **BRMSlash** » Fri Mar 04, 2016 2:12 am

Here's with 150n 1813's on both 2nd and 3rd stages, plus increased the 4th stage snubber to 330p.
http://sclk.co/s7xq9v

aside · Post by **aside** » Sat Mar 05, 2016 5:08 am

BRMSlash wrote:Here's with 150n 1813's on both 2nd and 3rd stages, plus increased the 4th stage snubber to 330p.
http://sclk.co/s7xq9v

Great tone mate

dukeamps · Post by **dukeamps** » Thu Mar 10, 2016 3:11 pm

Clip with Levi 36 mod and 6 band eq before the amp, g12 65w speakers.

http://soundclick.com/share.cfm?id=13335502

rockgod212 · Post by **rockgod212** » Thu Mar 10, 2016 4:00 pm

as if it couldn't get any better..........time to dig out my blue box mxr 6 band eq.........that thing just made it pop some. sounds killer. nicely done.

dukeamps · Post by **dukeamps** » Thu Mar 10, 2016 4:09 pm

rockgod212 wrote:as if it couldn't get any better..........time to dig out my blue box mxr 6 band eq.........that thing just made it pop some. sounds killer. nicely done.

Cheers RG, i think that is the final piece of the puzzle, Frank Levi said Slash used pedals with the 36 amp.

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

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