The loudspeaker shall be a self‑powered, full‑range system; the transducers shall be a 15 in diameter cone driver and a 4 in diaphragm compression driver on an 80° horizontal x 50° vertical horn. The loudspeaker system shall incorporate internal processing electronics and a two‑channel amplifier, one channel for each driver. Processing functions shall include equalization, phase correction, signal division, and protection for the high‑ and low‑frequency sections.
Each amplifier channel shall be class D. Peak power shall be 2250 W. 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–18 kHz (free‑field, measured with 1/3‑octave resolution at 4 m); phase response shall be from 80 Hz–18 kHz ±45°; linear peak SPL shall be 135.5 dB measured with M‑noise, free‑ field at 4 m referred to 1 m; coverage shall be 80° horizontal x 50° vertical horn at the ‑6 dB points and 100° horizontal x 60° vertical horn at the ‑10 dB points.
The audio input shall be electronically balanced with a 10 kΩ impedance and accept a nominal 0 dBV (1 V rms) signal. Connector shall be XLR 3‑pin female input with male loop output.
The internal power supply shall perform automatic voltage selection, EMI
filtering, soft current turn‑on and surge suppression. Power requirements shall be nominal 100, 110, or 230 V AC line 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 3.7 A rms (115 V AC), 1.9 A rms (230 V AC), and
4.3 A rms (100 V AC). Current inrush during soft turn‑on shall not exceed 20 A. AC power connectors shall be a PowerCON with looping capabilities.
The loudspeaker system shall provide facilities for installing Meyer Sound’s optional RMS remote monitoring system.
All components shall be mounted in an acoustically vented trapezoidal enclosure constructed of premium multi‑ply birch with a slightly textured black finish. The enclosure shall include an integral 1.5 in (38 mm) diameter pole mount receptacle and versatile rigging end plates made of high‑strength, 6061‑T6 aluminum with threaded M10 metric holes for basic eyebolt rigging and shall also accommodate Meyer Sound proprietary rigging hardware. The front protective grille shall be powder‑coated, hex‑ stamped steel with black mesh screen. Dimensions shall be W: 19.00 in (483 mm) x H: 28.15 in (715 mm) x D: 18.18 in (462 mm). Weight shall be 95 lb (43 kg).
The loudspeaker shall be the Meyer Sound UPQ‑D1.
Keyword: Loudspeaker, Loudspeakers