Testing an EL8
I picked up a used EL8, and I'd like to test it before going through the pain of installation.
I can connect the Power wire to the battery (fused, of course), and connect the line outs from the HU to the RCA line ins on the tube.
But would it be alright to connect the black wire *directly* to the "-" terminal on the battery? There's a wire to the frame, so electrically that'd be the same as grounding the tube to the frame, right?