Interfacing Roland system 100 with new Moog equipmen --safe?

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1

i have the Roland system 100 101 and a Voyager Electric Blue with VX-351 and CP-251 and MF-102 and MF-103
is it possible to integrate the Roland System 100 101 semimodular with the VX-351 and CP-251
Im worried about voltage differences --if any see detaisl below–I thought I would ask for expert advise before messing around
thanks in advance
David

Roland specs here
http://fa.utfs.org/diy/roland100/
but most important is Roland Specs
CV input and output 1V/oct
Gate input and output + 14V
Synthesizer 101–14 mini-jack sockets for patching with other systems–everything is patchable more or less
This is a self-contained semi-modular synthesizer with a 37-note (F-F) keyboard. It features an ADSR, LFO, Portamento, a VCO (with pulse width modulation and a tuning knob marked in Hz from 10Hz to 10kHz), white or pink noise, an audio mixer (with sliders for VCO, Noise, and External Input), a high-pass filter, a low-pass VCF, and a VCA with input for LFO. There are also buttons for auto-glide and manual-glide and an A-440Hz tuning oscillator. All of this in 21 sliders, five knobs, 14 mini-jack sockets, seven switches, and three 1/4" jacks (for headphone and high and low outputs).




Moog Voyager Specs
10) Control Voltage Inputs

  • Envelope Rate CV (-5V to +5V) Ring-Powered

  • OSC Pitch CV (adj. to 1V/Octave) (-5V to +5V) Ring-Powered

  • OSC Wave CV (all three osc. affected) ( 0V to +5V) Ring-Powered

  • FILTER Cutoff CV (-5V to +5V) Ring-Powered

  • VCA Volume CV ( 0V to +5V) Ring-Powered

  • VCA Pan CV (-2.5V to +2.5V) Ring-Powered

  • LFO Rate CV (-5V to +5V) Ring-Powered

  • MOD Mod1 CV ( 0V to +5V) Ring-Powered

  • MOD Mod2 CV ( 0V to +5V) Ring-Powered

  • S&H CV (-5V to +5V) Ring-Powered


    (4) Gate Inputs

  • ENV Release ON/OFF (0V OFF, +5V ON)

  • ENV Gate Input (0V OFF, +5V ON)

  • LFO Sync ON/OFF (0V OFF, +5V ON)

  • S&H Gate Input (0V OFF, +5V ON) No footswitch input

2

It’s all good! Just be clear about who’s controlling who and keep a few basic concepts in mind: CV outputs to CV inputs, AUDIO outputs to AUDIO inputs, GATE outs to GATE in, etc. You’re obviously going to need a supply of 1/4" to 1/8" patch cords. Experiment and have fun!

Best,

dml

3

The gate out of the roland is 3X the voltage the moog stuff wants. Not sure if it’s a problem or not, but I’d consider attenuating it just to be on the safe side.

4

@jeepo: Not sure if it’s the same for older Moog stuff, but I did find discrepancies when connecting an SH-09 to an MG-1. One’s positive trig and one’s negative trig; can’t remember which is which but i remember that releasing a key on the Roland triggered the Moog. And they’re scaled differently; they were something like a tri-tone apart (!), so I could have a perfect fifth if I tuned the Moog higher. It did however seem perfectly safe, just musically… weird.

5

Jauntimus ~
I don’t know for certain whether the MG-1 uses an ‘S’ (shorting) trigger or not (sure sounds like it though from your description) but the Roland gear definitely uses the more ‘standard’ positive going trigger. There shouldn’t be any problem with patching between a modern Moog (which no longer employs the use of ‘S’ triggers) and the older Roland.

David ~
When you get things patched up, be sure to check back in with a progress report!

Best,

dml