Meyer Sound Amie-Sub, Operating Instructions Manual

Page: 27 / 32

27
APPENDIX A: AMIE-SUB SPECIFICATIONS
ACOUSTICAL
Operating Frequency Range 22–160 Hz
Note: Recommended maximum operating frequency range. Response depends on loading
conditions and room acoustics.
Frequency Response 25–145 Hz ±4 dB
Note: Measured in half-space with 1/3 octave frequency resolution at 4 meters.
Phase Response 33–145 Hz ±30°
Linear Peak SPL 124.5 dB with crest factor >11.5 dB (M-noise) , 124.5 dB (Pink Noise), 126 dB (B-noise)
Note: 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.
COVERAGE
360° (single unit); varies with number of units and configuration
TRANSDUCERS
Low Frequency One 15-inch cone driver; 3

nominal impedance
AUDIO INPUT
Type Differential, electronically balanced
Maximum Common Mode Range ±15 V DC, clamped to earth for voltage transient protection
Input Impedance 10 k

differential between and Signal -
Nominal Input Sensitivity 6 dBV (2 V rms) continuous average is typically the onset of limiting for noise and music
Input Level Audio source must be capable of pro20 dBV (10 V rms) into 600

to produce maximum
peak SPL over the operating bandwidth of the loudspeaker
XLR Wiring Pin 1: Chassis/earth through 1 k  , 1000 pF, 15 V clamp network to provide virtual ground lift at audio
frequencies
Pin 2:
Pin 3: Signal – (optional polarity reversal switch)
Case: Earth ground and chassis
Looping Input Module Connectors XLR 3-pin female with male loop output
2:1 Integration Module Connectors XLR 3-pin female inputs (channels 1, 2 and LFE)
XLR 3-pin male loop outputs (channels 1 and 3)
7:1 Integration Module Connectors DB-25 female connector inputs (channels 1 to 7 and LFE)
DB-25 female connector outputs (channels 1 to 7 and LFE + bass management)
Note: The DB-25 multi-pin connectors are wired to an analog pinout that has become the standard in
the audio industry; it is sometimes referred to as the Tascam® DTRS pinout