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Buying USED Subwoofer? Test & Check THIS!

So you are on a budget but still want to purchase a subwoofer to upgrade the bass performance for your car audio system. A great choice that can have you saving money is to buy used, but if the subwoofer doesn't work you could be left with a paperweight. In this video we explore how to properly test a subwoofer with a multimeter along with other visual and audible tests you can perform to quickly make sure a subwoofer will work.

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