(2) Kicker 40CWR154 CompR 15" 2400w Car Subwoofers+Hifonics ZRX3216.1D Amplifier "15"" Car Subwoofer. Power Rating: 1200 Watts Peak / 600 Watts RMS, Impedance: 4-Ohm. Size: 15"", Best subwoofer in its class. Workhorse woofer with advanced components and superior technology, Works best with KICKER KX-Series Amplifiers. Available at 2- or 4-Ohm DVC, but provides installation flexibility with a single pair of push-button wire terminals and convenient impedance-selector slider for changing DVC impedance (2/8 Ohms or 1/4 Ohms, depending upon model) " "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 " "Sensitivity (dB @ 1W, 1m): 89.2. Mounting Depth (in, cm): 7-7/8, 20, Mounting Diameter (in, cm): 13-3/4, 35. Min Sealed Box Vol (cu. ft, L): 1.8, 51, Max Sealed Box Vol (cu. ft, L): 5.2, 147, Min Vented Box Vol (cu. ft, L): 3.0, 85. Max Vented Box Vol (cu. ft, L): 5.0, 142 " "3200 Watts RMS Mono Block Class D Car Amplifier+Bass Remote. Power Output: 3200 Watts x 1 Channel @ 1 ohm, Power Output: 1600 Watts x 1 Channel @ 2 ohms. Power Output: 800 Watts x 1 Channel @ 4 ohms. Illuminated Hifonics badge, Old School Hifonics Heatsink for Superior Heat Dissipation. Military Grade PCB, SPC - Simpatico Coil Design. HSMD - Hifonics Surface Mount Design " "PWM MOSFET Power Supply for Maximum Current Levels. Diagnostic Indicators, DC, Short Circuit, Thermal and Overload Protection. Low Level RCA Inputs and Outputs, Frequency Response: 10Hz-300Hz. Signal to Noise Ratio: &gt;95dB, RCA Input. Fuse: External ANL (250A Recommended), Bass Remote included. Bass Boost: 0-12 dB, THD: % &lt;0.10%. Variable subsonic filter (10-40 Hz), Variable low-pass filter (40-300 Hz). Dimensions: 19.7""L x 2.4""W x 10""H "