hi guys,
this is my setup

-Keyboard: Micro KORG
-Amp: Rocktile Scream-15
-Heil Talkbox
-2x 1/4 guitar jack

I have one problem tho, when i plug the talkbox(from amp out side) to the phones output of the amp there is no sound comin from the talkbox, the talkbox works when i plug it into the korg and the phones output works with some speakers.
Do i have to get another cable/amp or am i doing the whole thing wrong?