Specifications
ACOUSTICAL1 | |
Operating Frequency Range2 | 35 Hz – 125 Hz |
Frequency Response3 | 37 Hz – 110 Hz ±4 dB |
Phase Response | 43 Hz – 110 Hz ±30° |
Linear Peak SPL4 | 130.5 dB with crest factor >9 dB (M-noise), 130.5 dB (pink noise), 132 dB (B-noise) |
COVERAGE | |
360° (single unit); varies with number of units and configuration | |
TRANSDUCERS | |
Low Frequency | One 15-inch, dual-coil, long-excursion cone driver; 2 Ω nominal impedance |
AUDIO INPUT | |
Type | Differential, electronically balanced |
Maximum Common Mode Range | ±15 V DC, clamped to earth for voltage transient protection |
Connectors | XLR 3-pin female with male loop. Optional 5-pin connectors to accommodate both balanced audio and RMS signals |
Input Impedance | 10 kΩ differential between pins 2 and 3 |
Wiring5 | Pin 1: Chassis/earth through 1 kΩ, 1000 pF, 15 V clamped network to provide virtual ground lift at audio frequencies Pin 2: Signal (+) Pin 3: Signal (–) Pin 4: RMS Pin 5: RMS Case: Earth ground and chassis |
Nominal Input Sensitivity | 6.0 dBV (2.0 V rms) continuous is typically the onset of limiting for noise and music |
Input Level | Audio source must be capable of producing +20 dBV (10 V rms) into 600 Ω to produce the maximum peak SPL over the operating bandwidth of the loudspeaker |
AMPLIFIER | |
Type | 2-channel, open-loop, class D |
Total Output Power6 | 3100 W peak |
THD, IM, TIM | < 0.02% |
Cooling | Convection |
AC POWER | |
Connectors | powerCON 20 input with loop output |
Automatic Voltage Selection | 90–265 V AC; 50–60 Hz |
Safety Agency Rated Voltage Range | 100–240 V AC, 50–60 Hz |
Turn-on and Turn-off points | Turn-on: 90 V AC; Turn-off: none; internal fuse protection above 265 V AC |
CURRENT DRAW | |
Idle | 0.39 A rms (115 V AC), 0.38 A rms (230 V AC), 0.42 A rms (100 V AC) |
Maximum Long-Term Continuous | 5.3 A rms (115 V AC), 2.7 A rms (230 V AC), 6.2 A rms (100 V AC) |
Burst (<1 sec)7 | 9.2 A rms (115 V AC), 4.4 A rms (230 V AC), 10.7 A rms (100 V AC) |
Maximum Instantaneous Peak | 15.3 A peak (115 V AC), 7.8 A peak (230 V AC), 18 A peak (100 V AC) |
Inrush Current | < 20.0 A peak |
RMS NETWORK (OPTIONAL) | |
Two-conductor, twisted-pair network, capable of reporting all operating parameters of amplifiers to system operator’s host computer. | |
PHYSICAL | |
Dimensions without Rigging | W: 21.80 in (554 mm) x H: 20.30 in (515 mm) x D: 20.88 in (530 mm) |
Dimensions with Rigging | W: 21.55 in (547 mm) x H: 20.43 in (519 mm) x D: 20.88 in (530 mm) |
Weight without Rigging | 89 lbs (40.3 kg) |
Weight with Rigging | 105 lbs (47.6 kg) |
Enclosure | Premium multi-ply birch with slightly textured black finish |
Protective Grille | Powder-coated, hex-stamped steel with acoustical black mesh |
Rigging | Optional MRK-750 rigging kit with end frames and captive GuideALinks secured with 0.25 in x 0.53 in quick release pins that allow 0°, 1.5°, 3.25°, or 4.75° splay angles; detachable side handles. Rigging allows ground-stacked, flown, and cardioid configurations |
Pole Mount | U.S. version: 1.5 in (38 mm) E.U. version: 1.375 in (35 mm and M20 thread at the bottom) |
Notes
Loudspeaker system predictions for coverage and SPL are available in Meyer Sound’s MAPP System Design Tool.
Recommended maximum operating frequency range. Response depends on loading conditions and room acoustics.
Measured in half-space with pink noise at 4 m, 1/3-octave frequency resolution.
Linear Peak SPL is measured in free-field at 4 m referred to 1 m. Loudspeaker SPL compression measured with M-noise at the onset of limiting, 2-hour duration, and 50°C ambient temperature is <2 dB.
M-noise is a full bandwidth, (10Hz–22.5kHz) test signal developed by Meyer Sound to better measure the loudspeaker’s music performance. It has a constant instantaneous peak level in octave bands, a crest factor that increases with frequency, and a full bandwidth Peak to RMS ratio of 18 dB.
Pink noise is a full bandwidth test signal with Peak to RMS ratio of 12.5 dB.
B-noise is a Meyer Sound test signal used to ensure measurements reflect system behavior when reproducing the most common input spectrum, and to verify there is still headroom over pink noise.
Pins 4 and 5 (RMS) only included with XLR 5-pin connector that accommodates both balanced audio and RMS signals.
Peak power based on the maximum unclipped peak voltage the amplifier will produce into the nominal load impedance.
AC power cabling must be of sufficient gauge so that under burst current rms conditions, cable transmission losses do not cause the loudspeaker’s voltage to drop below the specified operating range.