Ok, I have been useing a Peavey MINX 110 for a long time now. Its a good amp but I know I would be better off with a 15 inch speaker in a band situation. I have a chance to aquire the cabinet of a peavey TNT, the head died due to a student not knowing how to use it I believe. It's sort of a "name your own price" thing so I figured it wouldn't help to pick it up, even when I can't run it on anything at the moment. My amps output was mad for 8 ohm speakers I think (8 ohm combo, 8 ohm cabinet=4 ohm, maximum load) and the TNT cab is a 4 ohm I think... Here's the thing. My teacher offered to add a jack on the outside of my combo: attach a quarter inch jack to the wire going to the speaker, so I could plug the internal speaker into this jack for band situations, unplug the internal speaker and plug in the cab if in a band situation. I know I will pick up this cabinet either way, it is far too good of a deal and any money I spend on it is donated to the schools music program. However, is this second jack idea just asking to end in disaster? I can always expect helpful responses from this place, you guys are the best out there Thanks!