HQ Power Spare woofer 8" for VDSG8. System type: 1.0 system, Speaker placement: Floor, Wall-mountable, In-wall/in-ceiling, Woofer size: 203.2 mm (8 "). RMS rated power: 300 W, Frequency range: 35 - 20000 Hz, Impedance: 8 Ом. Connectivity technology: Wired, Speaker interface type: 6.3 mm. Audio output channels: 1.0