The iS218-A is the Mobile Low Frequency subwoofer extension of the Clair “i-Series” line array system designed for permanent installations. The cabinet features two 18 in. direct radiating drivers in a tuned dual-chamber, dual-reflex enclosure.

The iS218-A is designed with two complementary transducers and ports that minimize thermal power compression and air flow turbulence. The 18 in. transducers have weather-resilient cones with exceptional linear excursion. The result is a high power handling, high performance subwoofer that provides tightly controlled low-frequency extension.

The iS218-A’s integral three-point rigging system allows several configurations. The iS218-A may be flown above the i212-A line array, providing an aesthetically pleasing alternative to ground stacked subs beneath the array.

Clair Brothers combines amplification and proprietary DSP processing in portable racks for all i-Series systems. Custom cabling for systems is available as well and can be pre-wired, labeled and delivered in road cases. For applications where flown rigging is not possible, the iS218-A can serve as a stacking base for the i212-A line array speakers.

As with all Clair Brothers Speaker products, the iS218-A is constructed with the finest Baltic birch plywood and finished with a rugged exterior black epoxy mastic finish to withstand the most demanding conditions.