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Meyer Sound Documentation

Architectural Specifications
In this section:
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The loudspeaker shall be a self-powered, full-range system. The transducers shall consist of two 8-inch cone drivers and one 3-inch diaphragm compression driver connected to rotatable horns with 2 models. The wide coverage model shall have a 110° x 50° horn and the controlled coverage model shall have a 70° x 50° horn.

The loudspeaker system shall incorporate internal processing electronics and a three-channel, class D amplifier. Processing functions shall include equalization, phase correction, signal division and protection for the high and low-frequency sections. Peak output power shall be 1950 W total with 8 Ω nominal impedance for the high-frequency channel and 4 Ω nominal impedance for the low-frequency channels. 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 55 Hz – 19.5 kHz; phase response shall be 90 Hz – 19.5 kHz ±45°. Maximum SPL shall be 138 dB for the ULTRA-X40 and 140 dB for the ULTRA-X42, measured in free-field at 4 m referred to 1 m using noise. Linear peak SPL for the wide coverage version shall be 132.5 dB with 18 dB crest factor, measured with M-noise, free-field at 4 m referred to 1 m, and its coverage pattern (–6 dB points) shall be 110° by 50°, horizontal or vertical dependent on horn orientation. Linear peak SPL for the controlled coverage version shall be 134 dB with 18.5 dB crest factor, measured with M-noise, free-field at 4 m referred to 1 m, and its coverage pattern (–6 dB points) shall be 70° by 50°, horizontal or vertical dependent on horn orientation.

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.

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 3.1 A rms (115 V AC), 1.5 A rms (230 V AC), and 3.4 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.

The loudspeaker system shall provide facilities for installing Meyer Sound’s optional RMS remote monitoring system.

All loudspeaker components shall be mounted in an acoustically vented trapezoidal enclosure constructed of premium multi-ply birch with a slightly textured black finish. The front protective grille shall be powder-coated, round-perforated steel. Dimensions shall be W: 12.51 in (318 mm) x H: 22.31 in (567 mm) x D: 14 in (356 mm) or 15.38 in (391 mm) with handles.

Weight shall be 52 lb (23.6 kg).

The wide coverage loudspeaker model shall be the Meyer Sound ULTRA-X40 and the controlled coverage loudspeaker model shall be the Meyer Sound ULTRA-X42.