Active Powered Extra Slim MDF Enclosure System
Silent Effect Noise Elimination Circuit Remote Control For Cabin Bass Control
Active Powered Extra Slim MDF Enclosure System   
Silent Effect Noise Elimination Circuit  Remote Control For Cabin Bass Control
High Efficiency DIGITAL Amplifier  Variable Low Pass Filter Crossover
Variable Subwoofer Bass Boost Control  Plastic Reinforced Impact Resistant Grilles
Heat Regulating Aluminium Heat Sink  Sensitivity Synchronization Control
Switchable Speaker Phase Selection  High and Low Level Input Options 
Specifications:  SUB-MA12SSA
Woofer Size: 12"
Woofer Voice Coil:  2"
Woofer Magnet:  40oz
RMS Power:  180W
Frequency Response:  25Hz~250Hz
Signal-to-Noise Ratio::  95dB
Phase Switch:  0-180