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Topic: Schematic for lil izzy |
Mike Maddux
From:
Cerritos, CA
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Posted 12 Oct 2006 3:14 pm |
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Anyone have the SCHEMATIC AND PARTS LIST for one of these little gems? Izzys had that goop that covered the insides so you cant see whats going on. Has anyone got one ungooped?
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Regular Rig: 60's Versatone Pan-O-Flex Amplifier, '85 Fender Tele Custom, '98 USA Fender Strat, Magnatone G-70, Harmony Steel, Silvertone Steel, Sho-Bud Maverick |
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Jack Stoner
From:
Kansas City, MO
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Posted 13 Oct 2006 1:45 am
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I tried cleaning the "potting" from a Lil Izzy and it was a total failure (and I'm an ex amp tech). But it is a small op amp.
If you want something similar, other than a Goodrich MatchBox, the MXR Microamp will do the same thing - impedence buffering and conversion (will supply a low impedence output) and also adds a volume control. There's schematics around the internet for the MXR and it's not hard to build. |
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Bill Crook
From:
Goodlettsville, TN , Spending my kid's inheritance
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Posted 13 Oct 2006 3:00 pm
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Jack.............
Touch base with Woody Woodall up here in Goodlettsville,TN. He has something in a spray-can that he uses to remove the metal dustcovers from speaker cones. I bet that stuff would also soften up the goop that found on the "Bouteek"  blocks found in some of those "You don't need to know whats in circuit" amps.
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http://home.comcast.net/~crookwf/
http://photobucket.com/albums/v479/billcrook/
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Jack Stoner
From:
Kansas City, MO
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Posted 13 Oct 2006 4:01 pm
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| Bill, I dont' have a Lil Izzy - just passing on info to the original poster. |
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Mike Harmon
From:
Overland, Missouri, USA
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Posted 13 Oct 2006 9:59 pm
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I looked at a Lil' Wonder (in a blue box - I believe it was made by the same guy) for one of Scotty's customers and had to tell the guy that I couldn't help him because of the epoxy potting compound. I heard later that he had tracked down the guy who made it and was going to try to get him to fix it (it had some busted mini switches).
I've heard rumors that in addition to the epoxy potting, the guy who built them also ground off the part numbers from the components. I can't verify this because I've never tried to get the potting compound off.
I think it's a shame that some folks are so paranoid that they will go to such extreme lengths to "protect" their intellectual property, but that's just one man's opinion.
Mike |
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David Mason
From:
Cambridge, MD, USA
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Posted 14 Oct 2006 2:19 am
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| Quote: |
| I think it's a shame that some folks are so paranoid that they will go to such extreme lengths to "protect" their intellectual property.... |
It actually seems to challenge and inspire people to try to clone the darn things - I'm not sure it's so much to "protect" intellectual property, a patent would do that if they had something other than a basic collection of diodes and capacitors and such. Rather, they're trying to add an aura of mystery and "specialness" to their circuits - which seems to be akin to telling a teenager that no, they can't get away with it - yeah right.
Behringer is making an overdrive pedal with the exact same chip and diodes as the "legendary" Tube Screamer (TO800) and selling it for $25, or you can buy a plastic Ibanez "Soundtank" with the right chip for $15 on Ebay and remount it. Yet, there is a thriving industry in re-equipping new Screamers and Boss pedals with the "right" chips and diodes, and reissue pedals selling for $170 to $250. Whatever makes you feel special, I guess.... |
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Jack Stoner
From:
Kansas City, MO
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Posted 14 Oct 2006 2:32 am
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"I think it's a shame that some folks are so paranoid that they will go to such extreme lengths to "protect" their intellectual property, but that's just one man's opinion"
Goodrich does that, too. As an ex amp tech I've run across devices or "modifications to amps" that have had the component ID's obliterated. Whenever you run across something like that the only thing you can do is tell the customer "I can't fix it". |
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