2) Hifonics HFX12D4 12 1600w Car Subwoofers+Sealed Sub Box+Mono Amplifier+Wires

Features:
 

Rockville RXD-M1 2000 Watt Peak/500 Watt Dyno-Certified RMS Mono 1 Ohm Amplifier Car Audio Amp
Dyno Certified RMS Power Ratings: (Certified Dyno Test / Less than 1 % THD) (Use these ratings when comparing with top brands such as Kicker. Rockford Fosgate. etc)
1 Ohm: 500 Watts x 1 Channel <1% THD+N
2 Ohm 350 Watts x 1 Channel <1% THD+N
4 Ohm: 250 Watts x 1 Channel <1% THD+N)
Peak: (Use these ratings when comparing with the top budget brands such as Boss. Power Acoustik. etc)
1 Ohm: 2000 Watts x 1 Channel
2 Ohm 1400 Watts x 1 Channel
4 Ohm: 1000 Watts x 1 Channel
Low Pass Filter: 50 Hz – 250 Hz
Subsonic Filter: 15Hz – 55Hz
Phase Control Switch
Full IC-Controlled Protection Circuitry
Remote Dashboard Subwoofer Control
Status Mode LED Indicator
Minimum THD at Rated Power: < 0.05%
S / N Ratio: > 100dB
Frequency Response: 10 Hz – 500 Hz
Damping Factor: > 220 @ 100 Hz
50 Amp Maxi Fuse
Dimensions (W x H x L): 8.6 x 2.0 x 12.6 inches

Video of RWK41:

• Package Includes: (2) Hifonics 12 Dual 4 Ohm Car Subwoofers. (1) Rockville Dual 12 1.25 cu.ft. 3/4 MDF Sealed Subwoofer Enclosure Sub Box. (1) Rockville RXD-M1 2000w Peak/500w RMS Mono 1 Ohm Amplifier Car Audio Amp. (1) Rockville RWK41 4 Gauge Complete Car Amp Wiring Installation Wire Kit with RCA’s.
• Features of Hifonics Subs: 12 HF Series Dual 4 Ohm Car Subwoofer. Peak Power Handling: 800 watts. RMS Power Handling: 400 watts. Sensitivity: 87.25 dB. Xmax: 6.5 mm. Dual 4 ohm Voice Coils. Final Impedance: Can be configured to run at 2 ohm or 8 ohm
• Features of RD12: Rockville RD12 Dual 12 Sealed Subwoofer Enclosure. Proudly Made In The USA. Using Only The Finest Quality Materials – For The Best Level of Performance From Your Subs!. 3/4 USA Heavy Duty MDF Construction. Machine precision cut mounting holes
• Features of RWK41:  1 ?C 17′ High Grade Twisted Pair of 100% Copper RCA Cable. 17′ ?C 4 Gauge Translucent Blue SuperFlex Power Cables. 17′ ?C 18 Gauge Blue Remote Cable. 17′ ?C 16 Gauge Clear Speaker Wire. 3′ ?C 4 Gauge Clear SuperFlex Ground Wire.
• Features of RXD-M1: Rockville RXD-M1 2000 Watt Peak/500 Watt Dyno-Certified RMS Mono 1 Ohm Amplifier Car Audio Amp. Dyno Certified RMS Power Ratings: (Certified Dyno Test / Less than 1 % THD) (Use these ratings when comparing with top brands such as Kicker. Rockford Fosgate. etc).