SoundBox Connected 12 Gauge 250&rsquo; Speaker Wire 12 Ga Clear Home/ Car 250 Ft. Speaker Cable Spool SoundBox Connected Series 12 Gauge Speaker Cable Extreme Heat Tested- 250 Ft. Spool Grade A- Copper/CCA Speaker Cable Use: Home or Car Double Conductor Easy Wire Identification- 1 Side Brown- Positive (+)/ 1 Side Silver- Negative (-)