A dedicated subwoofer system with 2x 15-in transducers in a compact vented rectangular enclosure. Each driver is in its own optimally vented sub-enclosure. Available in a portable version (‘R’ with handles and NL4 connectors) or a permanent installation version (‘P’ with mounting/suspension points). The SB250 provides high-output sub-bass response in a compact enclosure. Tuned enclosure venting extends LF response and minimizes driver strain. MX Series processors extend LF response and safeguard against cone excursion damage. Comprehensive mounting/suspension points.