I’d like to add some supersnappy voyager env to a bass patch on my korg MS20. would that be possible in your opinion?
I’d like to trigger the voyager envelopes pressing a key on my ms20,
but unfortunately MS20 outputs a 5v trig I think and the voyager requires an S-trig signal to work. am I going wrong here?
is there some commercially available converter between various forms of trig signals?
I have the same trig problems when I try to sequence the voyager from my roland MC202 or when I try to play the MC202 with the voyager keyboard.
well, I tried before posting, but unfortunately it did not work.
it seems that ms20 and voyager use different trig signals.
if I connect the trig out from my ms20 to the voyager trig in and then I press a key on the ms20,
the voyager envelope starts as soon as I depress the ms20 key.
key pressed on the ms20=mute on the voyager.
key release on the ms20=voyager envelope starts.
exactly the opposite thing.
if so then it means that it should work well with roland ( as they have opposite trig to korg for sure )
you can change the trigger or at least pretent, you have on the korg by taking the output of be eg1 . when using the inverted/ negative output, it might work,
if not , take the normal/ non inverted output from eg1.
attack release and delay on zero afcourse.
In some devices only gate outputs are available (e.g. Doepfer MAQ16/3, Schaltwerk, Regelwerk, MCV24). This means that a positive voltage (e.g. +5V or +8V) is used to trigger the device controlled by the gate output. Some devices (especially Moog synthesizers) require instead of this a so-called switched trigger or S-trigger. This means that a short circuit (connection to GND) is used to trigger the unit (example: a foot switch making a short circuit when actuated).
A simple electronic circuit made of a 10k resistor and a standard npn transistor is used to convert a gate signal to S-trigger. The sketch below shows this circuit. The resistor and transistor can be built e.g. into the case of the 1/4" jack. If you have problems to assemble yourself the cable described above please ask your local dealer. We offer such a special cable at a price of about Euro 20.00 - 25.00 (depends upon cable length and connector type). Please specify if you need a 3.5 mm or 1/4" jack on the input side and the length of the cable. E.g. for A-100, MAQ16/3, Schaltwerk, Regelwerk or MCV24 outputs 3.5mm jacks are used. For other applications a 1/4" jack on both sides may be required.
The Voyager (UNLIKE the Minimoog Model D) does NOT use an S-trigger (short for Shorting trigger). Instead, it uses a positive voltage gate (5 V). The MS-20 uses a shorting trigger (actually the same as an old Moog, but w/o the Cinch/Jones connector). While it’s possible to convert the gate to a trigger rather easily (plug the Voyager’s gate output into the MS-20’s external signal processor, and use the ESP’s trigger to control the MS-20), I don’t know of a way to covert a shorting trigger to a gate. The Doepfer example would only work w/ the old Moogs, unfortunately… Sadly speaking from experience here (I have a Sig Series Voyager, and an MS-20 I bought in 1980…).
Just wondering : ms-20 trig into CP-251 attenuator, then into mixer with a -5 volt offset and using the inverted output of the mixer into the Voyager env gate?
well the plans i posted earlier is about as budget as you are going to get.
probably <$2 in parts and easy as hell to build.
It come from the doepfer MS-20 faq and specifically addresses the inverted trigger problem.
