The QSC KW181 is a compact, high-output active subwoofer designed to add weight, punch and headroom to portable PA systems. Its optimised 18-inch driver is powered by efficient Class-D amplification to deliver tight, musical low end with a maximum SPL up to 135 dB, while usable response from around 37 Hz ensures solid extension for modern program material. A rugged birch cabinet, integrated M20 pole mount and ergonomic handles make it a dependable, tour-ready partner for pairing with full-range tops and for fast, tidy setups in the field.
This certified pre-owned unit has been fully tested by our technicians and is supplied with a 3‑month warranty for peace of mind. It comes with the original cover to protect the cabinet during storage and transport. Please note: units are sold in pairs only, with the price shown per unit.
Ideal for mobile DJs, corporate AV, live bands and rental fleets seeking reliable, authoritative low-frequency reinforcement without excessive size or weight.
Includes
- Original cover
STAGE21.1.100.049