Author Topic: Boss OC3 bass/guitar mod  (Read 336 times)

ghiekorg

Boss OC3 bass/guitar mod
« on: October 09, 2020, 08:29:30 AM »
Hello everyone,
Yesterday i realized a small box with 3 jack inputs and 3 jacks coming out of it. My idea was to use it as IN/OUT for the whole pedalboard and but placing an OC3 as first pedal with both input jack plugged in. This to avoid pluggin the bass or guitar in a different hole everytime. Maybe a pic would help understand.



Problem is: when both jacks are plugged into the OC3, the bass one doesn't work. Do you think is there a way to mod it so that one doen't cut off the other? I couldn't find any OC3 schematics, though...

Thanks :)


antonis

Re: Boss OC3 bass/guitar mod
« Reply #1 on: October 09, 2020, 08:38:35 AM »
Could you post a pic of the OC3 IN jacks..??  :icon_wink:
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

ghiekorg

Re: Boss OC3 bass/guitar mod
« Reply #2 on: October 09, 2020, 08:42:34 AM »

antonis

Re: Boss OC3 bass/guitar mod
« Reply #3 on: October 09, 2020, 08:51:23 AM »
Νο...  :icon_smile:

I mean your particular box jacks & wiring..
( I suspect Bass signal GND is somehow interrupted..)
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

ghiekorg

Re: Boss OC3 bass/guitar mod
« Reply #4 on: October 09, 2020, 09:08:07 AM »
aah sorry, misunderstood.
No the problem is not in the wiring i guess. I really tried to just have a bass plugged in together with a random jack inside the guitar IN and no sound came out until i just removed the jack from the guitar IN. I think the guitar input cuts off the bass one (?). But if you still wanna see my box i can send you a pic when home :)

antonis

Re: Boss OC3 bass/guitar mod
« Reply #5 on: October 09, 2020, 09:19:52 AM »
If so, then OC3 pedal has selectable inputs, in the mean of it utilizes only one at a time..

In such a case, you'll need a mixing circuit inside your box with only one jack out..
(but I'm not sure for the audible result..)  :icon_lol:
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

11-90-an

Re: Boss OC3 bass/guitar mod
« Reply #6 on: October 09, 2020, 09:21:28 AM »
I have a feeling the guitar in jack is stereo and it switches the bass input off when it's plugged... maybe you would have to cut a trace... :icon_eek:
flip flop flip flop flip

ghiekorg

Re: Boss OC3 bass/guitar mod
« Reply #7 on: October 09, 2020, 01:24:52 PM »
Here is what happens
https://www.youtube.com/watch?v=FPN2gY2A5so&ab_channel=ghiekorg

So i guess it's not an easy fix here :D