The loudspeaker shall be a self-powered, full range system; the transducers shall consist of two 4-inch low-frequency cone drivers and one 1-inch high-frequency metal dome tweeter. The loudspeaker system 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. The crossover point shall be 1.5 kHz. Amplifier channels shall be class D. Amplifier output power shall be 500 watts total for all three channels. 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 66 Hz to 18 kHz; phase response shall be ±45 degrees from 360 Hz to 12 kHz; linear peak SPL shall be 117.5 dB measured with M-noise, free field at 4 meters and referred to 1 meter. Coverage shall be 100-degree horizontal by 100-degree vertical.
The loudspeaker shall be equipped with either a Phoenix 5-pin male or EN3 5-pin male connector (three pins for balanced audio and two pins for DC power). The audio input shall be electronically balanced with a 10-kOhm impedance and accept a nominal –2.0 dBV (0.80 V rms) input signal. DC blocking and RF filtering shall be provided, and CMRR shall be greater than 50 dB and typically 80 dB (50 Hz to 500 Hz).
Power requirements for the loudspeaker shall be a Meyer Sound MPS-488HP IntelligentDC power supply capable of delivering 48 V DC. Current draw maximum long-term continuous current draw for the loudspeaker (< 10 s) shall be 1.0 A average at 48 V.
All components shall be mounted in an acoustically vented trapezoidal enclosure constructed of premium birch plywood with a black textured finish. Top and bottom rigging plates shall be available in 3/8”-16 or M10 threads. The front protective grille shall be powder-coated, hex-stamped steel with black mesh screen. Dimensions for the loudspeaker shall be 13.84 inches wide x 5.54 inches high x 5.25 inches deep (352 mm x 141 mm x 133 mm) without mounting bracket. Weight shall be 12.2 lbs (5.5 kg).
The loudspeaker shall be the Meyer Sound UP-4XP.
Keyword: Loudspeaker, Loudspeakers