Architectural Specifications
The loudspeaker shall be a self-powered, sub-bass system. The transducers shall consist of two 10-inch cone drivers. The loudspeaker shall incorporate internal processing electronics and a two-channel amplifier, one channel for each driver. Processing functions shall include driver protection, and frequency and phase correction. Amplifier channels shall be class D. Amplifier output power shall be 1800 W peak total. Distortion (THD, IM, TIM) shall not exceed 0.02%.
Performance specifications for a typical production unit shall be as follows, measured at 1/3-octave resolution: operating frequency range shall be 30 Hz – 140 Hz; phase response shall be 40 Hz – 123 Hz ±30°; linear peak SPL shall be 126 dB with crest factor >11.5 dB, measured in half-space with M-noise at 4 m referred to 1 m. The coverage shall be 360° (single unit).
The loudspeaker shall be equipped with an XLR 3-pin female connector with male loop output. The audio input shall be differential and electronically balanced with 10 kΩ impedance, and a continuous 0 dBV (1 V rms) input signal shall typically drive the speaker to the onset of limiting for noise and music.
Power requirements for the loudspeaker shall be 100–240 V AC, 50-60 Hz. Maximum long-term continuous current draw for the loudspeaker (>10 sec) shall be 1.4 A rms (115 V AC), 0.7 A rms (230 V AC), or 1.6 A rms (100 V AC). The power supply shall provide automatic voltage selection, EMI filtering, soft current turn-on, and surge suppression.
The loudspeaker shall optionally include the RMS remote monitoring system module.
All components shall be mounted in an acoustically vented, box-shaped enclosure constructed of premium birch plywood coated with a durable, black-textured finish. Top and bottom shall incorporate M8 threads. The front protective grille shall be powder-coated, stamped steel.
Dimensions for the loudspeaker shall be W: 12.00 in (304.8 mm) x H: 41.33 in (1049.8 mm) x D: 12.00 in (304.8 mm) without mounting bracket. Weight shall be 56 lb (25.40 kg).
The loudspeaker shall be the Meyer Sound USW-210P.