Features :

Crunch CR-212A 1000w Dual 12" Powered Loaded Subwoofers+Sub Box Enclosure CR212A
Amplifier Inputs: RCA or Molex - Allows inputs from both standard RCA inputs or High Level (speaker) level, making integration with an OEM (Factory) System easy
Voltage Input: Variable Input - Balance the power of the subwoofer system to the rest of the system
Bass Boost: Switched 0 / +6dB - An additional bass control for system tuning. Especially important in larger vehicles.
Motor: Ferrite Magnet - Creates a strong magnetic field while remaining small enough to fit nearly every application
Basket: Stamped Steel Basket - Very strong and minimal resonance frequencies
​Peak Power Handling (CEA426B): 1000w MAXX Power
Amplifier Inputs: RCA or Molex
Voltage Input: Variable Input
Bass Boost: Switched 0 / +6dB
Adjustable Crossover: Variable from 40Hz - 200Hz
Directional Heatsink: Improves Heat Dissipation
Voice Coils: Dual
Impedance: 4 Ω
Sensitivity (1 watt/1 meter): 90dB System
DC Resistance (Re): 2x4
Product Dimensions: 32 x 12.4 x 16.1 in (81.5 x 31.5 x 41 cm)
Product Weight: 38 lbs (17.2kg)
Rockville RWK81 8 Gauge 2 Channel Car Amplifier Wiring Installation Kit
(1) 17 High Grade Twisted Pair of 100% Copper RCA Cable
17 8 Gauge Translucent Blue SuperFlex Power Cables
17 18 Gauge Blue Remote Cable
17 16 Gauge Clear Speaker Wire
3 8 Gauge SuperFlex Ground Wire
Gold Plated AGU Heat Resistant Fuse Holder
60 Amp AGU Gold Plated Fuse
7 Split Tube Loom
Accessories Included: Wire Ties, Ring Terminals, Butt Connectors, Spades, and Grommets