My 1972 F7 Dart Swinger

sorry but, what is a slim sub???
One of these. They are low profile so they can more easily be mounted out of sight. I didnt want a huge power hungry amp and box but I wanted the low end to sound nicely rounded out. This thing adds the right amount of bass and is lower power draw.
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My factory radio has been retrofitted with new guts from Aurora Design. Included in the retrofit are sub pre-amp outputs.