I got a great deal on a Miller and Kreisel V-125 sub, with a Klipsch driver. With everything hooked up correctly, it has no sound. When I try to adjust the volume on the sub, it gets very loud and squeaks just like a mouse! So when I grab the volume knob and try moving it from side to side (not turning it up, but checking for free-play), it cuts in and out and squeaks. With no input wires hooked up from my preamp, it makes the same noises and acts the same. I cleaned the volume knob with an electrical contact cleaner containing lubricants and it made it much easier to turn, but still acting the same, with same noises. I checked the PCB (actually not sure what it's called in audio equipment) and the capacitors looked fine, nothing looked burnt, nothing loose. If it was a power issue, would it do what it's doing or would there just be nothing?
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