This is a good subwoofer coax cable. I have a 35 foot length for an Energy powered subwoofer with an 8 inch driver. The connection is strong and stable and serves its purpose. If you have RCA connectors on the subwoofer and amp, don't try to use the RCA cables lying around, buy a cable that's rated for the subwoofer, notice the embossed cutouts on the external connector? The cable looks well made and durable enough for years of use. Diameter. Cable and plug were undamaged.
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