Our new HST-18 mkIII is the result of years of pursuing perfection in the lower octaves of audio reproduction. Playing extremely deep and loud with the ability to sound superb in a very small enclosure is what the HST18 mkIII is all about. A single HST-18 mkIII will shake your theater room floor, walls, and couch with its monumental output capability. And if you throw on your favorite music selection it can be as cool as laid back as required. But let’s be serious here – you’re on this web page to read about our highest capability, longest stroke, king of Xmax, 18″ subwoofer that will smack and shake your entire body with its high-bandwidth high-SPL output.
Our HST-18 mkIII subwoofer reaches a 0.707 alignment in 3.7 ft^3 sealed with a vented alignment suggestion of 8 ft^3 tuned to 18 Hz. For extremely deep reproduction below 20 Hz our new driver has improved modifications which allow for a staggering 38 mm of Klippel verified one-way linear travel. Multiple faraday rings inside the 250 mm diameter motor improve impulse response for the best bass possible.