Hey guys, I was just wondering if it was possible to run a head (Epi Valve Jr.) into a combo amp's speaker, totally bypassing the pre and power amp in the combo, I just want the speaker output.
it works fine. just make sure you hook it up right (ie. unplug the speaker from the combo and into the head)
^ and make sure you use the right output on the VJ to match the speakers impendance.

but other than that, yeah. I did that for a few weeks before I got a cab, desoldered the wires to the speaker from combo amp, soldered in a 1/4" jack, and put a switch in.