Polk Audio React Sub

The React Sub’s long-throw, high-excursion woofer moves more air than a traditional sub for a farther reach and deeper bass. Dimensions (L)419mm x (W)218mm x (H)348mm (L)16.5” x (W)8.6” x (H)13.7” 7.5kg / 16.5lbs, Drivers (1) 7” Woofer.