Architectural Specifications
The loudspeaker shall be a self-powered, sub-bass system. The transducer shall consist of one 12-inch cone driver.
The loudspeaker system shall incorporate internal processing electronics and an open-loop, class-D amplifier. Processing functions shall include frequency correction, phase correction and driver protection. Peak output power shall be 1200 W total with 3 Ω nominal impedance. Distortion (THD, IM, TIM) shall not exceed 0.02%.
Performance specifications for a typical production unit shall be as follows: operating frequency range shall be 35–140 Hz; phase response shall be 45–120 Hz ±30°. Linear peak SPL shall be 123 dB with > 10.5 dB crest factor, measured with M-noise, half-space at 4 m referred to 1 m.
For the analog version, the audio input shall be electronically balanced with a 10 kΩ impedance and shall accept a nominal 0 dBV (1 V rms) signal. The connector shall be a XLR 3-pin female with male loop or optionally a XLR 5-pin female with male loop connector to accommodate both balanced audio and RMS signals. On weather-protected AC units, the connectors shall be 3-pin XLR TOP connectors. For the digital version, the audio format shall be Milan1 Certified and the connector shall be an etherCON TOP.
The internal power supply shall perform automatic voltage selection, EMI filtering, soft current turn-on and surge suppression. Powering requirements shall be nominal 100, 115 or 230 V AC line current at 50 or 60 Hz. UL and CE operating voltage range shall be 100–240 V AC.
Maximum peak current draw during burst shall be 3.6 A rms (115 V AC), 1.8 A rms (230 V AC), and 4.1 A rms (100 V AC).
Current inrush during soft turn-on shall not exceed 20 A at 115 V AC. The AC power connector shall be powerCON. For digital and weather-protected analog units, the AC power connector shall be powerCON TRUE1 TOP with loop output.
The loudspeaker system shall provide facilities for installing Meyer Sound’s optional RMS remote monitoring system on the analog version. Remote monitoring via Compass® control software shall be integrated in the digital version.
All loudspeaker components shall be mounted in an acoustically vented trapezoidal enclosure constructed of premium multi-ply birch with a slightly textured black finish. M8 mounting points shall be included on the top and bottom surfaces. The right side shall include an integrated 35 mm pole mount receptacle with M20 threads. The front protective grille shall be powder-coated, round-perforated steel. Dimensions shall be W: 13.5 in (343 mm) x H: 23.5 in (597 mm) x D: 12 in (305 mm).
Weight shall be 45 lb (20 kg).
The model shall be the Meyer Sound USW-112P.
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Digital Version