The BES110AS is a subwoofer speaker of the BES series and is the best match to work with the full range speakers for extending bass response. In a speaker surround sound system, combined with the BES5A or BES6, the BES110A will enhance the bass to very deep and low frequencies in order to achieve a precise wide frequency response monitoring system. Featuring XLR input/output connectors, phase reverse switch, variable low pass filter and volume controls makes the BES110AS an excellent subwoofer to meet the critical demands of studios. No matter whether it is in a stereo or a surround sound system, adding a BES110AS subwoofer to the system will enhance the performance of a studio monitoring system.