TE OPZ to Bug query

[seeasound]

Hey all, trying to connect my opZ using the oplab into my bug system using toms adapter cables....

My issue is I am getting a high pitched whine out of the opz with the ground jack connected to the bug frame...Im actually connecting the opz audio into the racked drm2. So im wondering if there a need to connect the ground jack at all as the opz is battery powered

[T. Jervell]

Have you tried with just audio (not using the oplab), if yes, still noisy?
Also have you tried to use a splitter on the opz audio out? Sending one of the mono outs from the splitter to the DRM?

[seeasound]

Yes once the ground jack is removed the noise is gone.

[T. Jervell]

Hmm... that’s strange. Well I don’t own a OP-Z, so can’t compare. But I guess sending CV from the OPLab will work as long as they share common ground when you plug audio out from OP-Z to DRM2 audio in, which I think they do. Hope you’ll resolve it!