Architectural Specifications
The loudspeaker shall be a self‑powered stage monitor; its transducers shall include two 8‑inch cone drivers and one 3‑inch diaphragm compression driver on a 70° x 50° horn.
The loudspeaker shall incorporate internal processing electronics and a three‑channel amplifier, one channel for each driver. Processing functions shall include equalization, phase correction, signal division, and driver protection. Amplifier channels shall be class D.
Performance specifications, measured at 1/3‑octave resolution, for a typical production unit shall be as follows: operating frequency range, 55 Hz to 18 kHz; phase response, 230 Hz to 16 kHz ±45 degrees. Coverage shall be 70° horizontal by 50° vertical. Linear peak SPL shall be 129 dB with crest factor >16 dB measured with M‑noise, 1 m on axis with typical boundary loading.
Audio connectors shall be XLR 3‑pin or 5‑pin input with male loop output. XLR 5‑pin connectors shall accommodate both balanced audio and RMS signals.
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 current at 50–60 Hz. UL and CE operating voltage range shall be 100–240 V AC at 50–60 Hz. Maximum instantaneous peak current draw shall be 6.0 A peak at 115 V AC, 2.9 A peak at 230 V AC, and 6.9 A peak at 100 V AC. AC power connectors shall be powerCON 20 with loop output. The loudspeaker shall optionally include the RMS remote monitoring system module.
Components shall be mounted in an acoustically‑vented, wedge‑shaped enclosure constructed of premium multi‑ply birch with a slightly textured black finish. The protective grille shall be hex stamped steel with black mesh screen. Dimensions shall be W: 18.68 in (474 mm) x H: 12.68 in (322 mm) x D: 18.60 in (472 mm). Weight shall be 47 lb (21.3 kg). The enclosure’s front angle shall be 35°.
The loudspeaker shall be the Meyer Sound MJF‑208.