HK Audio LINEAR-SUB-4000, 2400 Watt Passive Subwoofer - 2 x 18 Inch ks112 which makes it Airtight and

which makes it Airtight and Watertight

Amp Power: 1200W Peak

The system includes BLX4 tabletop single-channel receiver

while the non-slip rubber strips keep your equipment stable and secure during use

Signal to Noise Ratio: 105 dB at 30 kHz deviation (A-weighted)

HK Audio LINEAR-SUB-4000, 2400 Watt Passive Subwoofer - 2 x 18 Inch ks112 which makes it Airtight andThe HK Audio LINEAR SUB 4000 U, 2400W 18 Inch Passive Dual Vented Subwoofer Black is a powerful 18 inch dual vented bandpass subwoofer that is designed to complement the LINEAR 5 LTS long throw loudspeaker or any other LINEAR 5 mid high loudspeaker. It delivers an impressive low frequency response from 39 to 100 Hz with a maximum SPL of 137 dB. It can also be used as a sub low extension to the existing LINEAR SUB 2000 A subwoofers, delivering powerful