Sony SS-TX7S

The Sony SS-TX7S center speaker is a two-way, bass-reflex system with two 12cm (4 3/4 inch) glass fiber cone woofers and a 2.5cm (1 inch) glass fiber dome tweeter. It features a bass-reflex enclosure, a rated impedance of 8 ohms, and a maximum input power of 200W. The speaker's dimensions are approximately 190 x 450 x 260 mm (7 1/2 x 17 3/4 x 10 1/4 inches). 

Speaker System: Two-way, bass-reflex, three-speaker design.
Woofers: Two 12 cm (4 3/4 inch) glass fiber cone units.
Tweeter: One 2.5 cm (1 inch) glass fiber dome unit.
Rated Impedance: 8 ohms.
Maximum Input Power: 200W.
Characteristic Sensitivity Level: 87 dB (1 W, 1 m).
Effective Frequency Range: 50-25,000 Hz.
Dimensions (with grille): Approx. 190 x 450 x 260 mm (7 1/2 x 17 3/4 x 10 1/4 inches).
Mass: Approx. 7.6 kg (16 lb 12 oz).