Philips CSP650/51, 2-way, 240 W, 50 W, 4 Ω, 90 dB, 36 - 3500 Hz Philips CSP650/51. Speaker type: 2-way, Peak power: 240 W, Rated power: 50 W. Mounting depth: 6.13 cm, Width: 172 mm, Depth: 172 mm. Woofer magnet type: Ferrite. Quantity per pack: 4 pc(s)