HK AUDIO LINEAR SUB-4000A 1200w Active 18″ Dual Vented Sub-Woofer
L-SUB 4000A HK AUDIO. Compatible with all LINEAR 5 fullrange speakers and mid/high units, its powerful low end – ranging from 30 to 100 Hertz – is totally and powerfully impressive. L SUB 4000 A can also serve as a sub-low add-on to LINEAR SUB 2000 to beef up the bottom end in the range of 30 to 70 Hertz.