[sdiy] universal drum machine interface

rsdio at audiobanshee.com rsdio at audiobanshee.com
Sun Nov 4 22:35:54 CET 2018

I’m also curious about the specific circuit changes.

It’s potentially “dangerous” to inject an external voltage on the wrong side of those diodes. It really depends upon the output circuit on the device being added, as well as the input circuit on the vintage equipment.

You might not have a failure right away, but over time your CR-8000 might die a premature death due to skipping past the diodes. Circuit bending can be dangerous if done without the research to back it up.

I don’t doubt that you got better results, it’s just possible that the final result might be less than desired.

Brian Willoughby
Sound Consulting

On Nov 4, 2018, at 1:27 PM, Tony Kalomiris <weplar at gmail.com> wrote:
> Hi Adam, would you care to elaborate on the specifics?
> I for one am curious about which voice in the CR-8000 it was and where you injected the trigger pulse.
> Do all those trigger pulse shapes seem to make a difference in your opinion, subjective and otherwise?
> Specifically curious about that one that goes high-impedance (guessing to avoid interacting with the machines own trigger pulse.)
> TK
> From: Adam Inglis <21pointy at tpg.com.au>
>> Date: Sun, 4 Nov 2018 12:56:06 +1000
>> I tried a few different points to find the most musical results - just moving them to the other side of a diode and changing the polarity made noticeable differences in the resulting voice.

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