Specifications
ACOUSTICAL1 | |
Operating Frequency Range2 | 20 Hz - 200 Hz |
Frequency Response3 | 23 Hz - 160 Hz ±4 dB |
Phase Response | 32 Hz to 175 Hz ±30° |
Linear Peak SPL4 | 133 dB (M-noise) with crest factor >12 dB, 133 dB (Pink noise), 137 dB (B-noise) |
COVERAGE | |
360° (single unit); varies with number of units and configuration | |
TRANSDUCERS | |
Low Frequency | Two 18-inch cone drivers; 8 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 input with male loop output |
Input Impedance | 10 kΩ differential between pins 2 and 3 |
Wiring | Pin 1: Chassis/earth through 220 kΩ, 1000 pF, 15 V clamp network to provide virtual ground lift at audio frequencies Pin 2: Signal + Pin 3: Signal – Case: Earth ground and chassis |
Nominal Input Sensitivity | 0 dBV (1.0 V rms) continuous is typically the onset of limiting for noise and music |
Input Level | Audio source must be capable of producing of +20 dBV (10 V rms) into 600 Ω to produce the maximum peak SPL over the operating bandwidth of the loudspeaker. |
AMPLIFIER | |
Type | Two-channel complementary power MOSFET output stages (class AB/H) |
Total Output Power5 | 1240 W peak |
THD, IM, TIM | < 0.02% |
Cooling | Forced air cooling, 2 fans (one ultrahigh-speed reserve fan) |
AC POWER | |
Connector | 250 V AC NEMA L6-20 inlet or IEC 309 male inlet |
Automatic Voltage Selection | Automatic, two ranges, each with high-low voltage tap (uninterrupted) |
Safety Rated Voltage Range | 95 V AC - 125 V AC; 208 V AC - 235 V AC; 50–60 Hz |
Turn-on and Turn-off Points | 85 V AC - 134 V AC; 165 V AC - 264 V AC; 50–60 Hz |
CURRENT DRAW | |
Idle Current | 0.64 A rms (115 V AC); 0.32 A rms (230 V AC); 0.85 A rms (100 V AC) |
Maximum Long-Term Continuous Current (>10 sec) | 8 A rms (115 V AC); 4 A rms (230 V AC); 10 A rms (100 V AC) |
Burst Current (<1 sec)6 | 15 A rms (115 V AC); 8 A rms (230 V AC); 18 A rms (100 V AC) |
Maximum Instantaneous Peak Current | 22 A peak (115 V AC); 11 A peak (230 V AC); 25 A peak (100 V AC) |
Inrush Current | <7 A peak (115 V AC & 230 V AC); 10 A peak (100 V AC) |
RMS NETWORK (OPTIONAL) | |
Type | Two-conductor, twisted-pair network that reports all amplifier operating parameters to host computers |
PHYSICAL | |
Dimensions | W: 31.00 in (787 mm) x H: 40.00 in (1016 mm) x D: 20.5 in (521 mm) |
Weight | 221 lb (100.24 kg) |
Enclosure | Premium multi-ply birch with smooth medium-gloss black finish; optional textured finish |
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 at 4 m, 1/3 octave frequency resolution.
Linear Peak SPL is measured in half-space 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 (10 Hz–22.5 kHz) 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. The presence of a greater-than (>) symbol with regard to crest factor indicates it may be higher depending on EQ and boundary loading.
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.
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.