Appendix C: Hms-10 Specifications - Meyer Sound HMS-10 Operating Installations

APPENDIX C: HMS-10 SPECIFICATIONS

HMS-10 Specifications
ACOUSTICAL
Operating Frequency Range
Frequency Response
Maximum Peak SPL
Dynamic Range
Phase Response
Coverage
Acoustical Crossover
TRANSDUCERS
Low Frequency
High Frequency
CONNECTOR
Audio/Power Connector
Power Wiring
Audio Wiring
AUDIO INPUT
Type
Maximum Common Mode Range
Input Impedance
DC Blocking
CMRR
RF Filter
TIM Filter
Nominal Input Sensitivity
Input Level
AMPLIFIER
Amplifier Type
55 Hz – 18 kHz
Note: Recommended maximum operating frequency range. Response depends on loading condi-
tions and room acoustics.
58 Hz – 17.5 kHz ±4 dB
Note: Measured free-field with pink noise at 1 meter, 1/3rd octave resolution.
126 dB
Note: Measured free-field with music, referred to 1 meter.
100 dB
Note: Taken from peak SPL, referred to A-wtd noise floor.
290 Hz – 18 kHz ±45°
80° symmetrical
2.5 kHz
Note: At this frequency, the transducers produce equal sound pressure levels.
One 10" low-frequency long excursion cone driver
One 2" high-frequency diaphragm compression driver
Single Phoenix 5-pin male (3 pins for balanced audio, 2 pins for DC power)
Pin 1: 48 V DC –
Pin 2: 48 V DC +
Pin 3: Chassis/earth through 220 kΩ, 1000 pF, 15 V clamp network to provide virtual ground lift at
audio frequencies
Pin 4: Signal –
Pin 5: Signal +
Differential, electronically balanced
±15 V DC, clamped to earth for voltage transient protection
10 kΩ differential between pins 4 (–) and 5 (+)
Differential DC blocking on input up to the maximum common mode voltage
>50 dB, typically 80 dB (50 Hz – 500 Hz)
Common mode: 425 kHz
Differential mode: 142 kHz
<80 kHz, integral to signal processing
6.0 dBV (2.0 V rms, 2.8 V peak) continuous average is typically the onset of limiting for noise and
music
Audio source must be capable of producing +16 dBV (6.3 V rms, 9.0 V peak) into 600 Ω to produce
the maximum peak SPL over the operating bandwidth of the loudspeaker
Two-channel complementary MOSFET output stages (class AB/Bridged)
25