DS18 FullComboDual15 Fully Loaded System - DNA 2600.2 Stereo Amplifier, Two 15-Inch W15D Subwoofers, and SB-Kit4 Amp Kit DS18 W15D 2 Subwoofers (each): 1,600 Watts of Max Power and 650 Watts of RMS Power; Sensitivity: 94.4 Decibels, Frequency Response: 25-150 Hertz; Outer Diameter: 15.18 Inches; Mounting Diameter: 13.88 Inches; Depth: 6.44 Inches DS18 DNA-2600.2 Amplifier: 2-Ohm Stable in Stereo Mode, 4-Ohm Bridged Stable Class A/B, with RMS @ 4-Ohms of 2 x 564 Watts, RMS @ 2-Ohms of 2 x 940 Watts, and RMS @ 4-Ohms of 1 x 1560 Watts. Variable Hi Pass 50 Hz - 400 Hz, Variable Low Pass 50 Hz - 400 Hz Sound Breaker SB-KIT4 Amp Wiring Kit: 16FT 4 Gauge Power Cable, 3FT 4 Gauge Ground Cable; 16FT 16GA Speaker Cable, 17FT 2 Channel RCA Cable; 17FT Remote Turn-On Wire, 3 FT Split Loom Tubing; Silver AGU Fuse Holder + 100A AGU Fuse, Silver 4GA Accessories Included in this purchase: Two W15D Subwoofers, One DNA-2600.2 Amplifier, and One SB-KIT4 Amplifier Wiring Kit