Appendix E: Specifications - Meyer Sound LINA Operating Instructions Manual

APPENDIX E: SPECIFICATIONS

LINA loudspeaker system predictions for coverage and SPL are available in Meyer Sound's MAPP System Design Tool,
which can be found on the Meyer Sound website: http://www.meyersound.com.
ACOUSTICAL
Operating Frequency Range
Phase Response
Linear Peak SPL
COVERAGE
Horizontal Coverage
Vertical Coverage
TRANSDUCERS
Low Frequency
High Frequency
AUDIO INPUT
Type
Maximum Common Mode Range ±15 V DC, clamped to earth for voltage transient protection
Connectors
Input Impedance
Wiring
Nominal Input Sensitivity
Input Level
65 Hz – 18 kHz
Note: Recommended maximum operating frequency range. Response depends on load-
ing conditions and room acoustics.
°
100 Hz – 18 kHz ±45
132 dB with 19 dB crest factor (M-noise), 128 dB (Pink-noise), 130 dB (B-noise)
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-hr 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 band-
width 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.
100°
Varies, depending on array length and configuration
Two 6.5-inch long-excursion cone drivers; 4 Ω nominal impedance
One 3-inch diaphragm compression driver coupled to a constant-directivity horn through
a patented REM® manifold; 8 Ω nominal impedance
Differential, electronically balanced
XLR 3-pin female input with male loop output
Optional XLR 5-pin connector accommodates both balanced audio and RMS signals
10 kΩ differential between pins 2 and 3
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
Note: Pins 4 and 5 (included only with XLR 5-pin connector) are for balanced audio and
RMS signals.
0 dBV (1.0 V rms) continuous is typically the onset of limiting for noise and music.
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.
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