Soldano Cold Clipper..

  • Thread starter Thread starter midnightlaundry
  • Start date Start date
midnightlaundry said:
So far, I tried a few things.. The easiest was switching in a 1M resistor with a 470p cap in parralel at R29. This allowed me to turn the gain up to 5.5 and have the same response as 3.5 on the Gain.. But the rollback is still dead like a Boogie Mark.. It's just lifeless.. Cranking the gain on this things is just a woofy, bloated mess.

I'm going to try lowering the bias on the early stages with a 2.2K cathode resistor in thoughts of keeping the overall freq response..

This guy has it all figured out. This page must be old, but it's new to me..
https://robrobinette.com/How_the_Saldano_SLO-100_Works.htm#Long_Tail_Pair_Phase_Inverter
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I did the SLO mods to my JCA100HDM. Now I keep the gain on like 7 or 8, which is less than it had on 4 stock. It cleared up that mushy wooly mess it was stock. Lowering the stock gain pots to 500K, and changing the 1M resistors right after them to 470k cleared up a lot of gain.
 
Yeah man, I was looking back at the GAB threads.. That was a long time ago..
I re recorded that clip.. Things sound different to me at different times of the day. I listened to it on the TV setup and it sounded like shit. LOL
I took the Depth out of it, cut the Mids and turned up the Bass.. I can pretty much get it to sound like anything as long as the feel on the strings is right for me.

 
Lower those preamp filter caps from 22uf to 16uf. You'll dump the flub, and it'll get rid of some fizz too.
 
glpg80 said:
More filtering does make it tighter.

I’ll tell you right now, my 74 Marshall does not use stock filter cap values.
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Not necessarily in every circuit. In Marshals yes I agree, it gets tighter less chewy. In these SLO derived circuits just the opposite, the SLO it's self has 10uf. I've tried 22uf, and 33uf there it just gets flubby, it'll bounce the head off the cab. LOL
 
CrazyNutz said:
Not necessarily in every circuit. In Marshals yes I agree, it gets tighter less chewy. In these SLO derived circuits just the opposite, the SLO it's self has 10uf. I've tried 22uf, and 33uf there it just gets flubby, it'll bounce the head off the cab. LOL
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That’s an issue with too large of coupling caps, not the filter caps. Can’t blame one for the other - a stronger supply will always make an amp tighter. It’s up to the designer to make sure blocking distortion and cutoff frequencies are monitored accordingly.
 
glpg80 said:
That’s an issue with too large of coupling caps, not the filter caps. Can’t blame one for the other - a stronger supply will always make an amp tighter. It’s up to the designer to make sure blocking distortion and cutoff frequencies are monitored accordingly.
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It's not an issue with either, there is more than one way to skin a cat, and because of that a stronger supply does not always make an amp tighter. Just put some 33uf's in a SLO, I promise you'll be turning the bass down by 1/3, and the overall tone will be more muddy. Now that being said you almost can always get tighter with more cap in the screens, and mains.
 
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