Specifications - Meyer Sound M1D Datasheet

M1D-Sub specifications
1
Acoustical
Operating Frequency Range
Coverage
Transducers
Audio Input
Maximum Common Mode Range
Amplifiers
AC Power
Automatic Voltage Selection
Safety Agency Rated Operating Range
Turn-on and Turn-off Points
Max Long-Term Continuous Current (>10 sec)
Ultimate Short-Term Peak Current Draw
RMS Network
architect specifications
The loudspeaker shall be a self-powered, sub-bass system
that may be deployed as part of a flown array or placed sepa-
rately in proximity to the mid-high M1D array. The transducers
shall consist of two 10-inch cone drivers (2-inch voice coil)
each rated to handle 400 AES* watts.
The loudspeaker shall incorporate internal processing elec-
tronics and a two-channel amplifier. Each amplifier channel
shall be class AB/bridged with complementary MOSFET output
stages. Burst capability shall be 450 watts total with nominal
4-ohm resistive load on each channel. Distortion (THD, IM,
TIM) shall not exceed 0.02%. Protection circuits shall include
peak and rms limiting. The audio input shall be electronically
balanced with a 10 kOhm impedance and accept a nominal 0
dBu (1 V rms, 1.4 V pk) signal (+20 dBV to produce maximum
SPL). Connectors shall be XLR (A-3) type male and female. RF
filtering shall be provided, and CMRR shall be greater than 50
dB (80 dB 50 – 500 Hz).
2 32 Hz - 180 Hz
3 35 Hz - 160 Hz ±4 dB
Frequency Response
50 Hz - 120 Hz ±45°
Phase Response
4 130 dB
Maximum Peak SPL
>110 dB
Dynamic Range
360°
Horizontal Coverage
Varies, depending on array length and configuration
Vertical Coverage
Two 10" cone drivers with neodymium magnets
Low Frequency
Nominal impedance: 4
Voice coil size: 2"
Power-handling capability: 400 W (AES)
Differential, electronically balanced
Type
±15 V DC, clamped to earth for voltage transient protection
Female XLR input with male XLR loop output
Connectors
Ω
10 k
Input Impedance
Pin 1: Chassis/earth through 220 k
Wiring
provide virtual ground lift at audiofrequencies
Pin 2: Signal +
Pin 3: Signal -
Case: Earth ground and chassis
Differential DC blocking up to maximum common mode voltage
DC Blocking
>50 dB, typically 80 dB (50 Hz - 500 Hz)
CMRR
Common mode: 425 kHz
RF Filter
Differential mode: 142 kHz
Integral to signal processing (<80 kHz)
TIM Filter
0 dB V (1 V rms, 1.4 V pk) continuous is typically the onset of limiting
Nominal Input Sensitivity
for noise and music
Audio source must be capable of producing a minimum of +20 dB V (10
Input Level
V rms, 14 V pk) into 600
the operating bandwidth of the loudspeaker

Two-channel complementary MOSFET output stages (class AB/bridged)
Type
6 450 W total
Output Power
<.02 %
THD, IM, TIM
Ω
4 each channel
Load Capacity
Forced air cooling over amplifier heatsink
Cooling
PowerCon with looping output
Connector
Automatic
100 - 240 V AC; 50/60 Hz
7 Continuous 90 - 264 V AC; 50/60 Hz
8
Current Draw :
0.41 A rms (115 V AC); 0.33 A rms (230 V AC); 0.42 A rms (100 V AC)
Idle Current
3.2 A rms (115 V AC); 1.6 A rms (230 V AC); 3.7 A rms (100 V AC)
5.0 A rms (115 V AC); 2.5 A rms (230 V AC); 5.8 A rms (100 V AC)
Burst Current (<1 sec)
17 A pk (115 V AC); 8.5 A pk (230 V AC); 20 A pk (100 V AC)
15 A pk (115 V AC); 13 A pk (230 V AC); 15 A pk (100 V AC)
Inrush Current
Equipped for two conductor twisted-pair network, reporting all
operating parameters ofamplifiers to system operator's host computer.
Performance specifications for a typical production unit shall
be as follows, measured at 1/3 octave resolution: Operating
frequency range shall be 32 Hz to 180 Hz. Phase response shall
be ±45° from 35 Hz to 160 Hz. Maximum SPL shall be 130 dB
at 1 meter. Coverage shall be 360° horizontal. (Vertical varies
with array configuration.)
The internal power supply shall perform automatic voltage
selection, EMI filtering, soft current turn-on and surge sup-
pression. Powering requirements shall be 90 to 264 V AC line
current at 50 Hz or 60 Hz. UL and CE operating voltage range
shall be 100 V AC to 240 V AC. Current draw during burst shall
be 5 A at 115 V AC and 2.5 A at 230 V AC. Inrush current during
turn-on shall not exceed 15 A at 115 V. AC power connectors
shall be locking PowerCon with loop output.
Ω
5

differential between pins 2 and 3
Ω
, 1000 pF, 15 V clamp network to
Ω
inorder to produce maximum peak SPL over
Notes:
1. The low-frequency power response
of the system will increase according
to the length of the array.
2. Recommended maximum operating
frequency range. Response depends
on loading conditions and room
acoustics.
3. Free field, measured with 1/3 octave
frequency resolution at 4 meters.
4. Measured with music at 1 meter.
5. Power handling is measured under
AES standard conditions: transducer
driven continuously for two hours
with band-limited noise signal
having a 6 dB peak-average ratio.
6. Amplifier wattage rating based on
the maximum unclipped burst sine-
wave rms voltage that the amplifier
will produce into the nominal load
impedance. Both channels: 30 V rms
(42 V pk).
7. No automatic turn-off voltages.
Voltages above 264 V AC are fuse
protected but may cause permanent
damage to the power supply.
Voltages below 90 V AC may result in
intermittent operation.
8. Current draw for a single
loudspeaker. Loop out not used.
Made by Meyer Sound, Berkeley, CA, USA
European Office:
Meyer Sound Germany
GmbH
Carl Zeiss Strasse 13
56751 Polch, Germany
M1D-SUB - 04.116.001.01 C
meyer sound laboratories inc.
2832 San Pablo Avenue
Berkeley, CA 94702
T: +1 510 486.1166
F: +1 510 486.8356
techsupport@meyersound.com
www.meyersound.com
Copyright © 2006
Meyer Sound Laboratories Inc.
All rights reserved
The loudspeaker system shall incorporate the electronics
module for Meyer Sound's RMS remote monitoring and
control system.
All loudspeaker components shall be mounted in an
enclosure constructed of multi-ply hardwood with a black
textured finish. The front protective grille shall be pow-
der-coated, hex stamped steel. Dimensions shall be 22.62"
wide x 13" high x 17.50" deep (575 mm x 330 mm x 445 mm).
Weight shall be 70 lbs (31.75 kg).
The loudspeaker shall be the Meyer Sound Model M1D-
Sub.
*Driven continuously for two hours with band-limited noise
signal having a 6 dB peak-average ratio.