[sdiy] Bass synth update... sorta.

[Kyle Stephens]

Changing the caps can alter the freq response, which of course can be good or bad depending on your ear and choice of op amps I suppose. It's always an interesting game of limiting bandwidth somewhere in the circuit and letting it breathe elsewhere.

The OBD-3 kinda looks like a Boss Hyperfuzz, with the differential FET pairs in there, good stuff. Mine got stolen a few years back unfortunately :/

I otherwise have far too many fuzzes, distortions, etc., so maybe a good move would be to just have an external FX send for max flexibility. Again, I like the idea of arbitrary placement in the signal chain - something like pre-VCA keeps it quiet between notes, or post lets it brzaaaaah on and on in fuzzy glory.

Hope we're not swamping you Ian :)


_Kyle


--- On Mon, 1/16/12, Dave Magnuson <kingravine at comcast.net> wrote:

> From: Dave Magnuson <kingravine at comcast.net>
> Subject: RE: [sdiy] Bass synth update... sorta.
> To: "'Kyle Stephens'" <lightburnx at yahoo.com>, "'Ian Smith'" <taciturn_unquiet at hotmail.com>
> Cc: synth-diy at dropmix.xs4all.nl
> Date: Monday, January 16, 2012, 11:49 AM
> 
> 
> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl
> [mailto:synth-diy-bounces at dropmix.xs4all.nl]
> On Behalf Of Kyle Stephens
> Sent: Monday, January 16, 2012 2:16 PM
> To: Ian Smith
> Cc: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Bass synth update... sorta.
> 
> Saw phase shifter. It's a dual op amp and 4 resistors, you
> can't afford not
> to add it -
> http://blog.gg8.se/wordpress/2011/01/31/module-4-magnus-danielson-sawtooth-p
> hase-shifter/.
> 
> I like the idea of distortion thrown in there too,
> something that could be
> placed/patched either pre or post VCF/VCA. I'm working on a
> synth-ified
> ProCo Rat if you're interested.
> 
> Rats love synths and vice versa: http://www.youtube.com/watch?v=8rYF3W01Zms
> 
> 
> _Kyle
> 
> 
> I have a ProCo Rat II, and I think it's OK on
> synths.   My favorite by far
> is the Boss OBD-3 (bass overdrive).   The
> low end is ridiculous in
> comparison to the Rat (which sounds a bit thin on really
> low end stuff).
> The Rat is great for an edgy high-end lead, though.
> 
> http://www.indyguitarist.com/schematics1/boss/boss%20odb-3%20schematic.jpg
> 
> My favorite combo is the Crumar Spirit -> OBD-3 ->
> Ampeg SVT II preamp - >
> Mixer.  BOOM
> 
> Dave Magnuson
> 
> 
>