Thanks for the advice. I figured as much with the ridiculous tones I was getting. The only reason I'm trying this out is because I'm without a cab at the moment but figured I'd give it a shot. (Came home from college for the summer, brought my head, left the cab with a friend.) After that I realized it probably wasn't a smart thing to have tried...
Actually... I was just looking at my head and my monitors (M-Audio BX5a) and got an idea

. (I have some time on my hands and am trying to understand my gear and how it all really works) Is it possible/advisable to use those as a cab?
On the back of the monitors it reads:
LF Amp. Power:40W/HF. Amp. Power:30W
Input Imp.: 20K ohms Bal./10K ohms Unbal.
The outputs for my amp read:
Ext. Series / Main Speaker / Ext. Parallel
and then an impedance selector with 4, 8, and 16 ohms...
Anyway, not meaning to be a bother! I'm not going to try anything else until I study up/read/research. Thanks again!
Cheers!