The QSB118 is an active sub-woofer system that offers extended low frequency performance.

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The QSB118 sub-woofer system offers extended low frequency performance down to 17Hz (room dependent).


The 18” bass driver has a 4” voice coil and triple rear suspension allowing for exceptionally large peak-to-peak movement.


The radial chassis and vented magnet offer much greater cooling of the voice coil compared to conventional drivers. This means less power compression and increased output when running at higher SPL. The QSB118 is the perfect companion to any of the large format Q-Series monitoring systems.