Question about Sunfire True Subwoofer Mark IV Subwoofer

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My subwoofer makes loud, sharp popping noises at random intervals when in use. Otherwise, the sound is performing as expected. Any ideas on what the problem is?

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Pull the board out of the cabinet and spray it with "Tuner wash" can be found at any electronics store like Radio Shack etc. make sure you spray it on the volume and crossover point controls. Beware, Tuner wash can eat thru vinyl and any writing on the plastic. Pull off what you can and tape off the rest if necessary. After spraying it down, work it into the controls by turning them up & down. The spray will evaporate quickly. If you still have an issue, post a comment and I will help you troubleshoot further.

Posted on Jan 04, 2011

  • Luis hernandez Feb 13, 2011

    I f you are having problems contact ECP Electronics in Eagleville, PA, they can rebuilt the power amplifier and signal processor boards all the capacitors in this sets are going bad due to age but is dangerous to do it your seft beacause the power storage in the big capacitors in the power supply.

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