Moog Sonic Six Gate Signal

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1

hi folks,

did somebody know on which from the 6 accessory port pins the gate signal is present?
i remember a diagram with all the six pins discribed, but i can not find it in the net anymore :-/

2

Hi,

I was positive I had this information somewhere, but when searching through my hard drives I couldn’t find it.
I found this in the AH archives though;

(about the Cinch Jones plug)
the pin diagram on the mini version is pin 1 +10vdc, pin2 ground, pin 3
-10vdc, all output. the rest are n/c. on the sonic its the same, but
at 15 volts, and 4 is pitch and 6 is trigger.

My (early version, serial 144) Sonic Six had a 5v/oct cv input for the vcos. I had a tech modify it to 1V/oct.

Hope that helps,
Nils

3

Looking at the Sonic Six Schematics ( avilable on synthfool.com, thanks Kevin) it appears the pin codeis
Pin 1 + 15 volts
Pin 2 ground
Pin 3 - 15 volts
pin 4 Pitch
Pin 5 n/c
Pin 6 trigger

4

Thanks for the corrections :slight_smile:

5

sorry to bother, but one more question remains…

can anyone tell me which pin is which ??


is it like this (the holes on the moog sonic 6 socket, ready to accept the plug…)

1 3 5
2 4 6

or is it

5 3 1
6 4 2

thanks for any help…

6

Use a meter to check which pins have the +/- 15 and ground… that should identify the order.

7

ofcourse, good idea. i’ll dig up the meter…
thanks.

8

Are there no numbers on the inside of the plug ?
Checking with a voltmeter is always wise

9

i have already solved this, thanks. i sold the sonic 6 :wink:

10

it stands on the plug

11

Hi there, my sonic six seems to have a constant sustain from when you press the very first note. It will track pitch when you press another key but just keeps sustaining on and on… any ideas how I can identify the issue? Regards G

12

According to the service manual the VCA is IC 21, a standard CA3080 OTA. Unlimited sustain means the VCA is kept open. IC21 is controlled by a current sink(Q3) which is controlled by an envelope around IC23 and IC24.
I would check first whether the voltage at PIN 5 of IC21 is going to zero. If yes, replace IC21. If not, check whether the output of IC24 goes zero. If not, you must replace IC23 and or IC24 probably.
Unfortunately I don’t have any information about IC23.

Hope that helps…