Rockford Fosgate RF-HLC4 Enclosed Subwoofers It features a 1" (25mm)

It features a 1" (25mm) PEI dome

At the core of the C1-690x is a proprietary

Replacement packaging for W6v3 Subwoofers

18% Efficiency (1 W / 1 m)** 84

Rockford Fosgate RF-HLC4 Enclosed Subwoofers It features a 1" (25mm)Use the RF HLC4 high to low signal converter to connect 4 channel amplifiers to radios without RCA outputs. The RF HLC4 is a 4 channel high level to low level signal converter designed for factory or aftermarket radios that do not have dedicated low level RCA outputs. The adapter converts high level signal from the radio's speaker line and transforms it into a safer low level audio signal. This allows you to add a 4 channel amplifier to your system