Subwoofer Sub Woofer T815-44 (15¡± Dual Subwoofer) T612-44 (12¡± Dual Subwoofer) RTS12-04 (12¡± Single Subwoofer) RTS15-04 (15¡± Single Subwoofer) TN12-04 (12¡± Single Subwoofer) Round Subwoofer Enclosures TNP212D2 (Combo Pack Dual 12¡±) TNP112D (Combo Single 12¡±) RT8PT (Single 8¡± Round Enclosures)