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ACOUSTICAL1
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Operating Frequency Range2
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120 Hz – 18 kHz
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Frequency Response3
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135 Hz – 17 kHz ±4 dB
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Phase Response
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330 Hz – 20 kHz ±45°
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Linear Peak SPL4
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111.5 dB (M-noise), 109 dB (Pink noise), 111 dB (B‑noise)
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COVERAGE
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Hypercardioid response with <10 dB front‑to‑back ratio up to 500 Hz
120° (500 Hz – 4 kHz); 80° (4 kHz – 10 kHz ±10°)
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TRANSDUCERS
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One 4‑inch cone driver; 4 Ω nominal impedance
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AUDIO INPUT
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Type
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Differential, electronically balanced
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Maximum Common Mode Range
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±5 V DC
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Connectors
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SwitchCraft EN3 5‑pin male ( two pins for 48 V DC power, three pins for balanced audio)
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Input Impedance
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10 kΩ electronically balanced
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Wiring
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Pin 1: DC power (–) Pin 2: DC power (+)
Pin 3: Audio shield, chassis/earth Pin 4: Audio (–)
Pin 5: Audio (+)
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Nominal Input Sensitivity
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–2.5 dBV (0.75 V rms) continuous average is typically the onset of limiting for noise and music
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Input Level
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Audio source must be capable of producing +16 dBV (6.3 V rms) into 600 Ω to produce maximum peak SPL over the operating bandwidth of the loudspeaker
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AMPLIFIER
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Type
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Class‑D
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Total Output Power5
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440 W peak
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THD, IM, TIM
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< 0.02%
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Cooling
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Convection
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AC POWER6
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Connector
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SwitchCraft EN3 5‑pin male (two pins for 48 V DC power, three pins for balanced audio)
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Safety Agency Rated Voltage Range7
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48 V DC
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CURRENT DRAW
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Idle Current
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0.16 A rms
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Maximum Long‑Term Continuous Current (>10 sec)
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0.7 A rms
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Burst Current (<1 sec)
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2.2 A rms
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Maximum Instantaneous Peak Current
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2.35 A peak
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Inrush Current
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<7.0 A peak
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PHYSICAL
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Dimensions
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W: 4.04 in (103 mm) x H: 4.04 in (103 mm) x D: 7.95 in (202 mm) D with connector: 10.20 in (259 mm)
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Weight
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5.2 lb (2.4 kg)
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Enclosure
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Extruded aluminum with black anodized finish
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Protective Grille
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Perforated steel
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Mounting
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Two 3/8 in‑16 side inserts; optional MUB‑MM4XPD U‑bracket
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