Highlights: Max Power 1000W Size (inch) (W) 8-3/8" x (H) 2-1/16" x (D) 5-7/8" Variable Low Pass Filter Bass Boost Optional Wired Remote Ready Output Coil with Magnetic Shield Prevents magnetic flux from radiating from the subwoofer's coil resulting in reduced noise and enhanced sound quality. Sliding Terminal Cover Detachable sliding terminal cover offers a sleek design and easier installation. Variable Gain Circuit Improved Signal to Noise Ratio. One-side Connection All terminals and connections are on one side for easier installation and a cleaner look. Speaker Level Input Harness Speaker Level Input Harness is included to connect to speaker wires from factory installed receivers. Optional Wired Level Control Ready The optional KCA-RC01A wired remote level control allows you to easily adjust the subwoofer volume. What's in the Box X502-1 subwoofer amplifier Speaker level input harness Mounting screws Owner's manual Specifications: CTA-2006 Primary Ratings Power Output: 300 Watts RMS x 1 at 4 Ohms and 1%THD N Signal-to-Noise Ratio: 85dBA (Reference: 1Watt into 4Ohms) Maximum Power Output MAX POWER: 1000W Rated Power Output at 14.4V A/B (4 Ohms): - A/B (2 Ohms): - SUB (4 Ohms): 300Watts RMS x 1 (4 Ohms 20-200Hz 0.5% THD) SUB (2 Ohms): 500Watts RMS x 1 (2 Ohms 100Hz 0.5% THD) A/B (Bridged 4Ohms): - Specifications Signal to Noise Ratio: 100dB (Reference: Rated Power into 4Ohms at 14.4V) Frequency Response: 20Hz-200Hz ( 0dB -3dB) Frequency Response: - Input Impedance: 10k ohm Speaker Impedance: 4 (2 to 8 allowable) Bridged Connection: - Audio Section Low-Pass Filter: 50Hz-200Hz -24dB/oct High-Pass Filter: - Bass Boost: 40Hz 0dB - 18dB Infrasonic Filter: 25Hz -24dB RCA Input Sensitivity: 0.2[V] - 5.0 [V] Speaker Level Input Sensitivity: 4.0[V] - 12.0 [V] Terminals Battery Ground: M6 Screw Type Terminal Block Spea