[sdiy] MN3207 and MN3102 Reissues

[Gavin Muir]

Hi Mike 'n All,

Firstly, Mike... I'd be very curious to pick your brain on the DC-2 
clone.... Been thinking about this one myself, but those usual creepy 
Roland/Boss parts.... Any tips / stories / subs / images / files / 
layouts etc. on this one to help a fellow along?

I have always been curious as to why nobody has tried to clean up the 
"C" given how close you can get aurally to a "D"....

More generally though, I have been eyeing up a few potential 
clone-ables from the Japanese Giants (the DC-2 being one of them; the 
Dimension "D" looks a little too much for me to handle at this 
point!!).

Anyone have some decent tips on substituting parts (ie. standard 
operating procedure for finding a suitable sub?) This would of course 
include both those funky ICs they love so much, as well as the 
trannies.

As an aside, I'd be curious to know what kind of parts substitution was 
done on JH's SDD-320 clone? That would be a bit of a monster! ;-)

Cheers and thanks!

Gav

On 29-Oct-04, at 11:16 AM, mirwin at qouest.net wrote:

> Gregg (and list),
>  Built a modified-clone of the Dimension-"C" last year ( and I believe
>  another list member has built a Dimension "D") ... sounds very
>  nice...note
>  that the circuit uses NE570 companders for noise reduction... and it
>  certainly needs them... which is no surprise for BBD's. The MN3207 was
>  used in many commercially available fx units.. it is a lower voltage
>  unit than the MN3007 and has slightly worse noise specs. BBD circuits
>  are a very popular topic on some of the guitar fx newlists, and there
>  is lots of info around. There are also a number of inexpensive digital
>  delay chips  available nowadays that <may> provide cleaner sound with 
> a
>  simpler  circuit.
>  Mike
>