The KSK92 is KEF's dedicated stacking accessory for the KC92 subwoofer, designed to allow multiple KC92 units to be merged into a single, more powerful configuration without increasing the floor footprint. The kit attaches to the threaded inserts on the KC92's rear plate, creating a secure mechanical connection between units and enabling stable vertical stacking of two or three KC92 subwoofers.
Stacking multiple KC92 subwoofers increases bass output, extension, and dynamic headroom, allowing a paired or triple arrangement to deliver significantly greater low-frequency performance than a single unit. The KSK92's aluminium frames are positioned discreetly at the rear of the stack, preserving the clean aesthetic of the KC92's enclosure when viewed from the front.
One KSK92 kit provides enough hardware for either a dual-subwoofer stack or can be combined with a second kit to accommodate three KC92 units. Soft material layers are included to protect the cabinet surfaces and ensure a firm, rattle-free joint between each unit. All fixings are supplied, and installation uses the factory-fitted threaded inserts on the KC92 rear plate.