I bought a used Miller and Kreisel V-125 sub, with a Cerwin Vega driver in it. Unhooked my Polk Audio sub, which was working great, but the M&K at first had no sound. So I turned up the volume knob on the sub and it started thumping pretty hard, but then cut out. As it was doing this, there was also a squealing sound, exactly like a mouse and it would cut out everytime I touched the volume knob. I'm guessing there is a short in the volume control knob, but will that cause the squeaking? Could it be the Cerwin Vega driver is not suitable as a sub driver? I'm just getting back into listening to music the right way after over 30 years of having nothing more than a little radio. So I'm trying to learn everything again, plus all the new stuff I can. Thanks in advance!