I've tried posting this info several times, but keep getting something like "server error 500." So if the info below is posted like 5 times before this post, that's what happened. (I'd apologize, but it's not my fault. ) OK, assuming the server didn't get the info below posted, here it is again:
Here's the BOSS-original SD-1 schematic.
Here's a link to R.G. Keen's 'The Technology of the Tube Screamer' as well, since the TS-808/TS9 use the same feedback loop configuration as the SD-1 and the proposed mod to the Tube 12a.
The proposed configuration is not due to a mistake on a schematic. It's been used successfully in thousands/millions of Tube Screamer clones.
Here's the BOSS-original SD-1 schematic.
Here's a link to R.G. Keen's 'The Technology of the Tube Screamer' as well, since the TS-808/TS9 use the same feedback loop configuration as the SD-1 and the proposed mod to the Tube 12a.
The proposed configuration is not due to a mistake on a schematic. It's been used successfully in thousands/millions of Tube Screamer clones.