Focal - Sub Air - Wireless Ultra Flat 8" Subwoofer - High Gloss Black Focal design and sound. Ideal for Home Theater systems. Flexibility of installation / wireless connection. High-gloss finish. Focal's flattest subwoofer. Can be wall-mounted, takes up little floor space. Easy and quick to install. Synchronization button, phase and volume adjustment.. Wireless Transmitter included : LFE and Left/Right Input. Speaker driver (diameter) 8" (21cm). Bass cutoff frequency (-6dB) 35Hz. Frequency response (+/- 3dB) 40Hz 200Hz. Crossover cutoff frequency variable 50 Hz - 200 Hz. Input panel Left Right / LFE. Dimensions (HxWxD) 16.1"x14.2"x6.3". Weight 17 lbs. Wireless Range: 15 meters (in a room) up to 50 feet