Active Powered Bass Tube System
Silent Effect Noise Elimination Circuit Remote Control For Cabin Bass Control
Active Powered Bass Tube System   
Silent Effect Noise Elimination Circuit  Remote Control For Cabin Bass Control 
High Efficiency MOSFET Amplifier  Variable Low Pass Filter Crossover 
Variable Subwoofer Bass Boost Control  Sensitivity Synchronization Control 
Heat Regulating Aluminium Heat Sink  High and Low Level Input Options 
Specifications:  SUB-MA12TA
Woofer Size:  12"
Woofer Voice Coil:  2"
Woofer Magnet: 40oz
RMS Power:  180W
Frequency Response:  25Hz~250Hz
Signal-to-Noise Ratio:  95dB