HK Audio LINEAR SUB 4000 Dual 18" Passive Long-Throw Subwoofer, 2400W, 4 Ohms boss Unique Vocal Filter:

Unique Vocal Filter:

and even the subtle details within each note

Equipped with Nutube

The KMR 82 has a high-pass filter to suppress subsonic interference

HK Audio LINEAR SUB 4000 Dual 18" Passive Long-Throw Subwoofer, 2400W, 4 Ohms boss Unique Vocal Filter:LINEAR SUB 4000 is a powerful 18" dual vented bandpass subwoofer. It is compatible with all LINEAR 5 full range speakers and mid high units and delivers an impressively powerful low frequency response from 30 to 100 Hertz. The subwoofer is the recommended extension to the LINEAR 5 LTS long throw powerhouse. It can be used as a subwoofer extension to the existing LINEAR SUB 2000, delivering powerful low bass with optional frequency separation. Filter