I've built two 420s, two 440s, and a 410 (among many others), and I never
swapped any of those pots. No wonder, I followed the damn instructions and
PCB labeling.
Feeling cheeky, not enough coffee yet, just kidding you, Ken... ;)
David.
> -----Original Message-----
> From: elhardt@... [mailto:elhardt@...]
> Sent: Sunday, January 28, 2001 11:37 PM
> To: motm@yahoogroups.com
> Subject: [motm] Roland 1 volt/oct accuracy / FM1-FM2 swapped
>
>
> I just pulled out my two 420s (one where I swapped FM1 and
> FM2 by accident),
> and popped in my two 440s. They sound great, but I had
> swapped FM1 and FM2
> on both of those too. Geez. No wonder, the damn numbering
> of pots on the
> front panels of those filters is jumbled. 1,3,2 and 5,7,6.
>
> I'm using my Roland SH-7 to control my MOTM using the CV and
> Gate outputs
> (with a mess of alligator clips and resistors to chop down
> the gate level).
> I measured the CV out on the bottom C note and got a reading
> toggling between
> 2.00 and 2.01. Up the octaves I got 3.00, 4.00 and 5.00
> exactly. I had no
> idea that both the synth and my BBC meter were so accurate.
> Both the synth
> and meter would have to be accurate to less than 1/100 of a
> volt for these
> kinds of readings. Amazing.
>
> -Elhardt
>
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