M&K C15S in‑wall subwoofer (Each)

Engineered for behind‑screen or custom‑built installations, the C15S delivers reference‑grade low frequencies from an impressively slim cabinet (≈298 mm deep). Its 15″ ultra‑stiff paper‑pulp woofer—with an aluminum dust cap and shorting ring—provides deep, tight bass that rivals twin‑woofer systems. Mounted in a sealed MDF enclosure reinforced with front‑to‑back bracing and equipped with bass‑brace brackets, the unit minimizes vibration and cabinet resonance.

Each sub pairs with the bespoke VA500 Blue Edition external amplifier, featuring selectable boundary‑compensation EQ presets, 500 W RMS / 800 W peak power, and precise crossover and phase controls. For larger systems, multiples can be stacked using the included coupler, with individual amplifiers ensuring thermal performance remains optimal. The C15S delivers cinema‑level bass impact discreetly and powerfully.