I have the older 350 rumble combo and got a gig this weekend, so I need to config my combo to run my ampeg 4x10 .so I want to disconnect the combo 2x10s and make a connector for the 4x10. Drilling a hole in the back and putting a 1/4 inch connector on the combo. So when I just want to use it just plug it in same way but when I need the head for my 4x10 I can unplug it from the 2x10 and plug it into the ampeg. Question can this work? I just until I can purchase a proper head for my 4x10.