Bass Boss Makara-MK3 Double 21″ Subwoofer  your performance demands leviathan low end, it’s time to call upon the BassBoss Makara-MK3. This 5,000-watt powered subwoofer houses dual 21-inch woofers, yielding a cavernous 25 to 90Hz frequency response and a savage 145dB max SPL. Its integrated DSP provides highpass, lowpass, EQ, phase alignment, cardioid processing, and limiting for fine-tuned sound management. It boasts numerous MK3 updates, including a state-of-the-art Class D amplifier and IP65-rated connectors. You also get Control BassBoss software, which supplies you with computer-accessible presets, networked remote control, and streamlined DSP updates. Global power compatibility ensures you can use the Makara-MK3 anywhere in the world. This rugged loudspeaker also brandishes an 18mm birch plywood cabinet with extensive bracing and dado joinery. Finally, a high-pressure, bonded polyurea coating offers roadworthy ruggedness. Available at FM Electronics.