[sdiy] Relative merits of various BBD's

[Scott Stites]

.> I tend to not use rare parts for DIY.  That leaves me with the shortest
> available being the reissued 512stage unit, and as much fun as BBDs are, I
> wouldnt run a Matsushita BBD within 25% of its max rated clock unless I
was
> after a distortion effect...

It is not uncommon to find commercial designs that toss the max clock freq
aside and go for the gusto, often with very good results.

The only one now that I can think of offhand is the hugely successful Blacet
Time Machine, which I believe is based off of the MN3005, a 4096 stage
device.  Max clock freq of the MN3005 is 100 kHz, minimum delay of the Time
Machine is 2 ms.

In my own experiments with the MN3207, increased insertion loss doesn't
become overly significant until way past the stated max clock freq of 200
kHz, and within that range, of course you have the advantage of higher
bandwidth.

Cheers,
Scott