Originally Posted by
porschedpm
Before you start investing more money in these I'd first isolate what the problem is. I would take the suspect woofer out and measure the DC Resistance with an ohm meter to see if it falls within range (5.1 to 6.3 ohms). If you don't have an ohm meter, you might try hooking the speaker cable up directly to the input terminals on the suspect 12" woofer, thus bypassing the crossover, to see if the problem persists. If you have a known-good 12" woofer lying around you can plug that in and see if that cures the problem. If the problem persists, maybe its a problem with the crossover, another driver, or the wiring inside.