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: 32 Hz - 3kHz, Normal (*1): 32 Hz - 150 Hz, Extend (*1): 29 Hz - 150 Hz Coverage area - Floor Monitor Angle - Components LF 18" Cone, 4" Voice Coil, Ferrite magnet HF - Crossover - Power rating NOISE 500 W (EIA 426-A) PGM 1000 W (EIA 426-A) PEAK 2000 W (EIA 426-A) Nominal impedance 8Ω SPL Sensitivity (1W; 1m on axis) 100dB *2 Peak (Calculated) 133 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 550 mm (21.6") H 657 mm (25.9") (with rubber feet) D 720 mm (28.4") Net weight 43.6kg (96.1 lbs) Options Cover: SPCVR-DXS18X, Caster: SPW-1 Others Enclosure Material, Finish, Color: Plywood, Durable Polyurea coating, Black