ADA FLANGER CLONE
Jan 2009 - An outstanding member of the DIYSTOMPBOX community (oldschoolanalog) has managed to come up with a revision for the ADA Flanger circuit that replaces the out-of-production and now nearly impossible to find SAD1024 bucket brigade delay chip with a much easier to find and affordable MN3007.
GO HERE FOR MORE INFO ON THE MN3007 VERSION
Everything below this point applys to SAD1024 versions of the ADA Flanger circuit.
Here is some information for building a circuit based on the A/DA Flanger. The rev.01 PCB layout, below, has been fabricated and verified to work by several members of the DIYstompboxes.com forum. The circuit is exactly the same for rev.02 & rev.3 but the PCB incorporate a few minor tweaks/improvements to the PCB layout.
Building Notes (PCB rev.01 & rev.02)
PCB
Layout (rev.02)
Overlay
Top
Layer
Bottom
Layer
Layout
PCB
Layout (rev.01)
Overlay
Calibration and Bench Test Procedure
Bounce
Mod Diagram (untested)
(drawn by Stephen Giles)
Additional documentation and background info...
Some time ago, the original Rev.3 circuit was adapted by Mike Irwin to replace the out-of-production, obsolete MN3010 with the also out-of-production, but much easier to obtain SAD1024. His modification was then verified with a very impressive strip-board construction that was built by Stephen Giles.
My revised schematic, above, is a hybrid of the original Rev.3 and Rev.4 versions with Mike's SAD1024 adaptation. In addition, my layout includes a transformerless regulated (LM7815) power supply and a number of additional pads to make experimenting with the circuit easier, and to allow for easy implementation of a number of alternative modifications (see Building Notes, above).
I collected the following from files that the very cool members of DIYstompboxes.com posted and sent to me over the years (Bill Bergman, Mike Irwin, Stephen Giles, et al... thanks y'all!). This is most of the background documentation that I used to put together the updated clone circuit, above.
Mike I mod SAD1024 ADA flanger rev3 layout1-1.pdf