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Vintage threads from the first ten years

BOSS SD1 to IBanez ts808 mods?

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5/6/2000 10:10 PM
Dave	BOSS SD1 to IBanez ts808 mods? I was wondering are there any mods for the boss super overdrive sd1 pedal to get it to 100% spec of a ibanez ts808 tube screamer? i know the sd 1 is the boss version of a tubescreamer. also any other cool mods/suggestions is great too. thanx

5/7/2000 12:36 AM

Dave,

Funny you should ask...just yesterday I sat was thinking about this, and I sat down with the two schematics and compared them part by part. The SD-1 and TS808 have nearly the identical layout. Depending on how exact you want the conversion to be, there are about 30 changes. Almost all of the changes are simple componant swaps; in a couple of places something either needs to be added or removed entirely. I havent actually looked at how the board's layed out to see what would be involved in the additions but I can't imagine that it would be too triky; the additions are adding a 51pF cap across the clipping diodes, running a connection to ground through a 0.22uF cap just before the tone pot, and connecting +4.5V through a 510k resistor between the level pot and output buffer. If you want all the details either send me an e-mail, or post your e-mail address. I numerically labeled each revision on the schematic for the SD-1, and made a list detailing the revisions by number; I can throw 'em on my scanner and send you a copy. I'm thinking that with all the right parts on hand, it could be done in about an hour. If and when I convert mine, I'm also going to make it true-bypass, so I've also noted those changes on the schematic.

Take it easy

Jeff S.

5/7/2000 4:38 PM
Bob S II	Hey Jeff, Could you send a copy my way? Thanks, =Bob

5/8/2000 12:32 AM
Mitch	Jeff, Could I please have a copy too for my SD-1. Thanks.

5/8/2000 3:12 AM
John S.	jEFF...LOOKS LIKE YOU SHOULD GO INTO BUSINESS ON THIS! ;O) Anything that can be modded over to the TS 808 is where it's at these days.....LOL John S.

5/9/2000 6:12 AM
holo	Re: BOSS SD1 to IBanez ts808 mods? May i have a copy please?

5/9/2000 7:43 PM
Ed Goforth	Hi Jeff, I too would like a copy of that schematic or layout that mentioned here if possible. Thanks Ed: Goforthsound@gotnet.net

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