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APPENDIX B: SPECIFICATIONS
NOTE: Loudspeaker system predictions for coverage and SPL are available in Meyer Sound’s MAPP predic-
tion software.
LEO-M Specifications
ACOUSTICAL
Operating Frequency Range 55 Hz – 16.5 kHz
Note: Recommended maximum operating frequency range. Response depends on load-
ing conditions and room acoustics.
Phase Response 375 Hz to 14 kHz ±30 degrees
TRANSDUCERS
Low Frequency Two 15-inch long-excursion cone drivers
High Frequency Two 4-inch compression drivers coupled to a constant-directivity horn through a patented
REM
®
manifold
AUDIO INPUT
Type Differential, electronically balanced
Maximum Common Mode Range ±15 V DC, clamped to earth for voltage transient protection
Connectors XLR 5-pin female input
XLR 5-pin male loop output
Input Impedance 10 kOhm differential between pins 2 and 3
Wiring Pin 1: Chassis/earth through 1 kOhm, 1000 pF, 15 V clamped network to provide virtual
ground lift at audio frequencies
Pin 2: Signal (+)
Pin 3: Signal (–)
Pin 4: RMS (polarity insensitive)
Pin 5: RMS (polarity insensitive)
Case: Earth ground and chassis
DC Blocking Differential DC blocking up to the maximum common mode voltage
CMRR >50 dB, typically 80 dB (50 Hz – 500 Hz)
RF Filter Common mode: 425 kHz
Differential mode: 142 kHz
TIM Filter Integral to signal processing (<80 kHz)
Nominal Input Sensitivity 0.0 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 +20 dBV (10 V rms, 14 V peak) into
600 ohms to produce the maximum peak SPL over the operating bandwidth of the loud-
speaker
AMPLIFIER
Type 3-channel, complementary MOSFET output stages (class AB/H bridged)
Cooling Two ultrahigh-speed primary fans, two ultrahigh-speed reserve fans
AC POWER
Connector powerCON 32 input
Safety Rated Voltage Range 208–235 V AC, 50–60 Hz
Turn-on/off Points Turn-on: 165 V AC; Turn-off: 264 V AC
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