Package Includes:. (2) Kicker L7S154 15" 2000 Watt Solobaric L7S Car Subwoofer Solo-Baric 44L7S15-4. (1) Rockville KRYPTON M4 6000w Peak/1500w RMS Mono 1 Ohm Car Amplifier Amp+Remote. (1) Rockville RWK0CU 0 AWG Gauge 100% Copper Complete Amp Installation Wire Kit OFC. (1) Rockville Dual 15" Vented Subwoofer Enclosure Kicker Solo Baric L7S L7R Sub Box. (1) Dual Sub Box Enclosure Installation Kit: Speaker Wire, Screws, Spade Terminals Features of L7S154: Kicker L7S154 15" 2000 Watt Solobaric L7S Car Subwoofer Solo-Baric 44L7S15-4 . Dual Four-Ohm Voice Coils. Injection-Molded Polypropylene Cone. Patented Corner Ribs Minimize Distortion. SoloKon� 360-Degree Back Bracing. Ribbed Santoprene Surround With Blue Surround Stitching. UniPlate� Back Plate And Pole Piece, Plus Perimeter Venting For Excellent Thermal Management. Thick Tinsel Leads Specifications of RBL15SQ:. 2 hole 15" Vented w/Square Holes. Finished with Durable Bed Liner . 3/4" MDF. High Quality Spring Loaded Terminals. Air Space: 2.3 Cubic Feet (per sub) . Height: 16.25". Width: 38". Depth: 18". Tuning Frequency: 39HZ. Complete Dual Subwoofer Enclosure Installation Kit!. Includes:. 20 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal). 20 Feet of 14 AWG Blue Speaker Wire. 4 Spade Terminals Features of Krypton-M4: Rockville Krypton-M4 6000 Watt Peak / 1500w Dyno-Certified RMS Mono 1 Ohm Car Amplifier Amp. Dyno Certified RMS Power Ratings: (Certified Dyno Test / Less than 1 % THD) (Use these ratings when comparing with top brands such as Kicker, RF Fosgate, etc). 1 Ohm: 1500 Watts x 1 Channel <1% THD+N (76% efficient). 2 Ohm: 1000 Watts x 1 Channel <1% THD+N (86% efficient). 4 Ohm: 550 Watts x 1 Channel <1% THD+N (89% efficient). Amplifier Kit Key Features of RWK0CU: 0 Gauge Power Amplifier Installation Kit. Designed specifically for car audio systems over 1000 watts RMS to 3000 Watts. Made from silver-tinned 100% virgin copper for a pure uninterrupted transfer of power and signal. The solid brass gold plated ANL Fuse Holder offers ideal protection for high powered systems. Strand Count: 4704. BC-5W2 Compliant. Kit includes:. 17 ft. Frosted Blue 0 gauge power wire with seamless crimp ring terminal. 3 ft. Description of KRYPTON M4: The Krypton series of amplifiers by Rockville are engineered to have the best reliability and features. Whether you are a car audio competitor or just like to enjoy loud music. We engineered and designed these amps from the ground up to give you great sound quality and great features. You will notice the cool battery voltage display meter which looks great but also serves as a tool for you to know if your battery voltage is dropping which would affect your systems performance. We designed the amps to be able to last for many years even if you are playing them at max volume before clipping for extended periods of time