M V COLLECTION SUBWOOFER LOW PASS FILTER WITH GAIN AND FREQUENCY ADJUSTABLE CONTROLL HIGH QUALITY FOR AMPLIFIER BOARDS ( WORKING VOLTAGE 0-12 AC ) Electronic Components Electronic Hobby Kit Price in India -
Amazon.com: Sound Town Class-D Plate Amplifier for PA DJ Subwoofer Cabinets, 700W RMS, w/High-Pass Filter Outputs (STPAS-G800) : Musical Instruments
Subwoofer Low Pass Filter Board
Subwoofer High Quality LowPass Filter Freq.40Hz~400Hz+B-Boost+Phase SUB-2/SMD | eBay
Low Pass, High Pass and Band Pass Filters - Simple Explanation -