Probably a long shot, as Google hasn't turned up much. I have this little Quantum 20 amp, which was a combo (pic below, not mine) but was separated from its cab/speaker by the previous owner. That "B" jack on the rear panel says "4 ohm minimum" so I'm guessing the original speaker would have been 4 ohm as well? I've found some info on another of their amps called the Terminator 25 that suggested it was a 20 watt amp, so I'm guessing this "20" comes in under that. As far as I can tell, it works, so I've considered building a cab for it and picking up a Celestion eight 15 speaker for it. I'm sure it makes no financial sense, as it'll just be another crappy practice amp, but other than that, any issues people can see with my plan, or recommendations?