Re: Is my sub blown up or repairable??
^^^^ to elaborate on what this guy said, just because it is turned up halfway doesn't mean you are only getting half the wattage. The gain knob is just that, a gain knob, not a volume knob. It is used to set with the rest of your amps, and is dependent on H/U voltage, etc. It looks fried. You could try splicing a little wire or something in there, but it may be time for an upgrade.
Head unit: Pioneer 880prs
Sub: IDmax 12
Comps: Alpine Type X
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