Features:

Kicker 43CWR124 Subwoofer
Best subwoofer in its class
Workhorse woofer with advanced components and superior technology
Large-diameter, progressive-roll spider with high-strength Spiralead tinsel leads
One-piece UniPlate with vented pole piece and bumped back plate
Added voice-coil clearance for full excursion; high-temp coil wire
Quad Venting included vertical and horizontal slots under the cone for ultimate cooling
Injection-molded polypropylene cone and tough Santoprene surround
Full-coverage steel basket with minimized mounting depth
Stamped Steel Basket
Spring-loaded Push Terminals
Dual 4-Ohm high-temperature voice coils
Double Stacked Magnet
Rockville RXD-M3 Amplifier
High-Speed MOSFET Power Supply
Optical Coupler Class "D" Technology
Studio-Grade Bipolar Output Stage Transistors
Phase Control Switch
Full IC-Controlled Protection Circuitry
Remote Dashboard Subwoofer Control
Fully Adjustable 12dB Bass Equalizer
Mute and Delay Soft Start System
RCA Preamp Line Output
8 Volt Preamp Circuitry
Status Mode LED Indicator
Minimum THD at Rated Power: < 0.05%
S / N Ratio: > 100dB
Frequency Response: 10Hz - 500Hz
Damping Factor: > 275 @ 100Hz
120 Amp External In-Line ANL Fuse Block
Dimensions: (W x H x L) 8.5˝ x 1.8˝ x 14.5˝
1 - 17' High Grade Twisted Pair of 100% Copper RCA Cable
17' - 4 Gauge Translucent Blue SuperFlex Power Cables
Rockville RD12 Subwoofer Enclosure