It occurs to me that the following approaches might be considered:
1.- Reverse engineer the trigger pad input circuitry on a Roland TD-20 into the modular format. Paul H has certain reservations aboot some of Roland's stuff, so reverse engineer an Alesis DM5 instead. Or better yet, just offer a conversion kit: I buy a DM5 off of eBay, buy the Stooge conversion kit and away I go! Woo hoo!
2.- Take a completely different approach. Consider that burying the crosstalk trimmers inside a case makes them set'n'forget: this is completely useless to a performance instrument. Every stage set-up will require some tweaking. And given the costs involved in the inevitable module requirements to make this thing fun, it is just as cost effective and more flexible to buy separate stands for each pad (I often use cymbal stands with Gibraltar ball joint tom heads in place of the cymbal arm) to achieve a brute force isolation than to chew up 2U of panel space for each input module with the crosstalk stuff on the front.
Just my thoughts.
I personally would way rather see a 1U with the Tellun small pot format and the crosstalk accessible.
PLL, BFG
On 17-Jan-06, at 10:37 AM, jfm3 wrote:
On Tue, 2006-01-17 at 00:32 -0500, john mahoney wrote:
> Late night, I-should-already-be-asleep thoughts on reducing crosstalk:
>
> Assumptions: For any given drum, there will be 1 or 2 other drums which
> cause the majority of cross-talk. If this is completely wrong, never mind!
> But...
This is basically true, and a useful assumption.
> If my assumption is reasonably correct, then each drum processor need 3
> inputs: One normal input and 2 out-of-phase inputs with pots or trimpots.
> Each drum processor also needs at least 3 outputs, in order to feed a normal
> input and some anti-crosstalk inputs.
>
> The anti-crosstalk stuff could all be behind the front panel, I guess, but
> I'd rather see it up front. Large front panel, I know.
>
> So, would that work?
Yeah, I think it would work. It would probably be sufficient to have
crosstalk connections for each of your two neighbors on the bar you're
bolting the drums to.
I feel it would be very important to keep the front panel 1U though,
since even a small kit must have several of these in order to be useful
(as opposed to, for example, a preamp module that you plug your guitar
into, of which you'd only need one). If you wanted to build a modular
that had enough to reproduce some drum synth, you're looking at a
minimum of four, usually five or six "voices." Each voice would need
one of these piezo->trigger/gate/cv things, an EG, and a filter...
that's already two panels for five voices, and we haven't even
considered noise sources, ring modulators, or stuff for more usual synth
voices. Besides, the only application of the crosstalk negating
connectors/trims would be for eliminating crosstalk. It seems like
you'd have to get way too creative to come up with a more general use
for them, such that you'd want to easily connect them to other modules.
--
(jfm3)
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