The CB181sl is a direct-radiating, ultra-slim subwoofer system for cinema applications.Featuring a single 18” long excursion woofer with 4” voicecoil, together with the large bass-reflex vents, the CB181 delivers sustained, fundamental sub-bass output. The Signal Integrity Sensing™ pre-wiring ensures complete cable/connector compensation between the CB181sl and ALC controller-amplifier. Especially with the typical long speaker cables and the subwoofer system’s possible low impedance, the effect of Signal Integrity Sensing is remarkable; Really tight and accurate reproduction for even the lowest octaves. The enclosure design provides for stacking, flying or wall-mounting. The side-oriented reflex vent enables the cabinet to be closely mounted behind the screen without chance of screen resonance. Typical applications for the CB181sl include cinema subwoofer or sub-bass extension of general sound systems, used in multiples depending of low frequency requirements. For full system performance, we recommend using the CB181sl in combination with an ALC amplifier/ controller. Driven by the ALC, the CB181sl not only delivers maximum sound quality and output power, but is also inaudibly protected against over- excursion (SDP circuit), which is a typical challenge for cinema subwoofer systems.