JL Audio Single 12" Subwoofer Bass Package - PPJLA14 Package Includes: One - JL Audio 12W1v3-4 12" Subwoofer One - JL Audio JD250/1 Mono Amplifier One - Single 12" Sealed Sub Enclosure JL Audio 12W1v3-4 12" Subwoofer - 4 ohm The 12W1v3 is a lightweight 12-inch driver with excellent performance capabilities at moderate power levels. It features moderate mounting depth with no pole-vent, so the rear of the motor structure can be placed directly against an enclosure boundary. Excellent excursion capability and linearity allow it to reproduce sub-bass with shocking extension and quality. Several of JL Audio's proprietary technologies enhance its performance and reliability. The 12W1v3-4 is best used with amplifier power in the 75W - 300W range and is optimized to operate in a compact 1.10 cu. ft. (31.5 l) sealed enclosure. Detailed enclosure recommendations can be found in the "Specifications" tab. Free Air Resonance (Fs) 26.21 Hz Electrical “Q” (Qes) 0.535 Mechanical “Q” (Qms) 8.2 Total Speaker “Q” (Qts) 0.502 Equivalent Compliance (Vas) 2.706 cu ft / 76.63 L One-Way Linear Excursion (Xmax)* 0.45 in / 11 mm Reference Efficiency (no) 0.2500% Efficiency (1 W / 1 m)** 86.1 dB SPL Effective Piston Area (Sd) 81.426 sq in / 0.0525 sq m DC Resistance (Re) 3.915 Ω * Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.** Efficiency (1 W / 1 m) is not an accurate indicator of a subwoofer’s output capability and should not be used as a comparison to other subwoofers to determine which one is “louder”. Power Continuous Power Handling (RMS) 300 W Recommended RMS Amplifier Power 75 - 300 W Nominal Impedance (Znom) 4 ohm Dimensions Nominal Diameter 12.0 in / 300 mm Overall Diameter (A) 12.5 in / 318 mm Mounting Hole Diameter (B) 11.0625 in / 281 mm Bolt Hole Circle (C) 11.7 in / 297 mm Magnet Diameter (D) 5.25 in / 133 mm Mounting Depth (E) 5.41 in / 137 mm Driver Displacement 0.052 cu ft / 1.47 L Net Weight 12.2 lb / 5.5 kg JL Audio JD250/1 Monoblock Class D Subwoofer 250 Watt Amplifier Designed to produce a healthy 250 watts into 2 ohms (14.4V, 1% THD), the JD250/1 amplifier is a great solution for powering subwoofers in a cost-conscious system. Our proprietary NexD™ switching technology delivers large amounts of real-world power output with excellent efficiency and ultra-low distortion. The JD250/1’s controls are located on the input panel. while the power and speaker connections can be found along the opposite end of its extruded aluminum chassis. Signal processing features include a 12 dB / octave low-pass filter, with continuously variable frequency selection from 50-500 Hz, and a variable bass boost EQ. Dual-range, differential-balanced inputs are also on-hand, capable of accepting line-level and speaker-level signals. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard, along with a set of preamp outputs so you can easily pass signals to another amplifier. The JD250/1 is also equipped with an onboard LED-clipping indicator ring, surrounding the input sensitivity control. This useful feature lets you easily set your amplifier’s input sensitivity, quickly and accurately, without special equipment. With the addition of an RBC-1 remote level control (sold separately), you can control the subwoofer level from the driver’s seat. Specifications Rated Continuous (RMS) Power @ 14.4 V@ 4 Ω: 150 W RMS x 1@ 3 Ω: 200 W RMS x 1@ 2 Ω: 250 W RMS x 1@ 1.5 Ω: N/A Rated Continuous (RMS) Power @ 12.5 V@ 4 Ω: 115 W RMS x 1@ 3 Ω: 150 W RMS x 1@ 2 Ω: 200 W RMS x 1@ 1.5 Ω: N/A General SpecificationsFrequency Response: 7 Hz - 500 Hz (+0, -1dB)S/N Ratio, referred to highest rated power: >80 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)S/N Ratio, referred to 1 W: >60 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)Damping Factor @ 4 Ω: >1000 / 50 HzDamping Factor @ 2 Ω: >500 / 50 HzTHD+N @ Rated Power: <1% @ 2 Ω per Ch.Input Voltage Range @ RCA Inputs: Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High)Min.Copper Power / Ground Wire Gauge: 8 AWG wireFuse Rating: 30 A (AFS, AGU or MaxiFuse™) Signal ProcessingFilter Mode(s): Low-Pass onlyFilter Slope(s): 12 dB/octaveFilter Frequency Range: 50 Hz - 500 HzDetented, Calibrated Filter Freq. Potentiometer: NoFilter Defeat Function: NoInfrasonic Filter: NoBass Boost EQ: YesOutput Polarity Switch: NoRemote Subwoofer Level Control: Optional (RBC-1)Remote Bass EQ Boost Control: NoPass-Through Preamp Output: Buffered Physical SpecificationsHeight (H): 2.10 in / 53 mmWidth (W): 9.50 in / 242 mmDepth (D): 7.50 in / 190 mm