What Yamaha has to say:
The CZR Series is a range of passive loudspeakers offering high power handling and outstanding sonic performance in a portable, lightweight, yet rugged design. The CZR is ideal for a range of live performance and installed sound environments— from live bands at outdoor festivals to DJ’s in clubs—these loudspeakers deliver crystal clear, high-quality sound with impressive bass performance. For even more bottom end to round out your sound, adding CXS XLF Series passive subwoofers can extend your system’s low frequency performance dramatically down to a startling 29Hz for throbbing low frequency reproduction capability that’s sure to impress.
Speaker type Subwoofer, Bass-reflex Frequency range (-10dB) Passive: 33 Hz - 3.5kHz, Normal (*1): 35 Hz - 150 Hz, Extend (*1): 33 Hz - 150 Hz Coverage area - Floor Monitor Angle - Components LF 15" Cone, 4" Voice Coil, Ferrite magnet HF - Crossover - Power rating NOISE 400 W (EIA 426-A) PGM 800 W (EIA 426-A) PEAK 1600 W (EIA 426-A) Nominal impedance 8Ω SPL Sensitivity (1W; 1m on axis) 98dB *2 Peak (Calculated) 130 dB *2 I/O connectors SpeakON NL4MP x 3 (Parallel x2, Output x1) Handle Aluminium die-cast, Side x2 Pole socket Φ35 mm (depth 80mm), M20 Threaded (depth 25mm) Rigging - Dimensions W 450 mm (17.7") H 587 mm (23.1") (with rubber feet) D 600 mm (23.6") Net weight 35.6kg (78.5 lbs) Options Cover: SPCVR-DXS15X, Caster: SPW-1 Others Enclosure Material, Finish, Color: Plywood, Durable Polyurea coating, Black