DATASHEET
M SERIES
MICA : Compact High-Power Curvilinear Array
Loudspeaker
wide and provides both soft turn-on and
transient protection. The MICA loudspeaker
comes with the RMS™ remote monitoring
system interface installed. RMS offers com-
prehensive monitoring of system parameters
on a Windows®-based network.
MICA™ is a self-powered, three-way loud-
speaker designed for vertical curvilinear
arraying. A member of the MILO® family of
high-power curvilinear array loudspeakers,
the MICA loudspeaker is ideal for applications
that do not require quite as much power and
throw distance as MILO and where weight and
size is a concern. The MICA compact high-
power curvilinear array loudspeaker is equally
applicable in a wide variety of applications
such as touring, rental and fixed installations.
MICA provides an excellent complement to a
MILO main system for tours that are playing
a variety of venues, being used as sidefills
for large arenas and sheds and as the main
system for smaller venues.
at lower frequencies to take advantage of
their combined acoustic output, while one
of the drivers rolls off before the crossover
frequency to maintain optimal polar and
frequency response.
The high-frequency section — at the center
between the two cone drivers — consists of
two neodymium magnet compression drivers
with 3-inch diaphragms and 1.2-inch exits.
These newly designed drivers are seamlessly
combined through a custom, patented Meyer
Sound REM™ ribbon emulation manifold,
coupled to a 100-degree horizontal constant-
directivity horn. This horn’s controlled, very
narrow vertical dispersion is ideally suited
for use in curvilinear arrays, allowing minimal
destructive interaction in the high frequencies
between adjacent enclosures. Compared to
other methods, REM produces a smoothly
controlled wavefront with less distortion
and with the far higher output generated by
compression drivers.
MICA systems may be deployed in either
flown or ground-stacked configurations.
Newly designed QuickFly® rigging hardware
uses captive GuideALinks™ contained within
recessed guides in the front and rear corners
of the cabinet. A slot and convenient pinned
handle allow the link to be moved and pinned
for arraying or storage. The rear link permits
10 splay angles between 0 and 6 degrees (in
0.5-degree increments from 0 to 3 degrees,
and in 1-degree increments from 3 to 6
degrees); the two-position front link may be
set to add 7 degrees, adjusting coverage to
miss balcony fronts and other architectural
obstacles. The rigid connections allow easy
adjustment of array tilt, and often eliminate
the need for a pullback strap in flown configu-
rations. A single flown array can include up to
22 MICA loudspeakers with a 7:1 safety factor,
and 25 loudspeakers with a 5:1 safety factor.*
The loudspeaker provides very high acoustic
output, with a single MICA producing a peak
output of 138 dB SPL at one meter. High
output combines with exceptionally flat phase
and frequency response over a wide operating
range of 60 Hz to 18 kHz. MICA’s frequency
response, with its extended high-frequency
characteristics, is quite compatible with MILO
in applications where both loudspeaker types
are used.
All four MICA transducers are designed and
manufactured in-house, and are driven by
an integral, four-channel class AB/H ampli-
fier that provides 3020 watts of total out-
put power (6000 watts peak). The inte-
grated amplifier/processing circuitry includes
TruPower® limiting to protect the drivers
and hold long-term power compression to
less than 1 dB. The field-replaceable elec-
tronics module incorporates Meyer Sound’s
Intelligent AC™ power supply, which auto-
matically adjusts for any line voltage world-
Options for MICA include a weather-protected
version with a rain hood to safeguard the
electronics, and custom color finishes. Top
and transition grids, a caster frame for
transporting stacks of multiple units, and
protective covers are available.
The MICA low/low-mid section features two
high-power, neodymium magnet 10-inch
cone drivers with 2-inch voice coils, especially
designed for the power capability of the
system. Both drivers are housed in separate
vented enclosures within the loudspeaker,
located on the left and right sides. The two
high-power 10-inch drivers work in tandem
*Restrictions apply; see the MG-MICA Assembly Guide for more
information.
features & benefits
applications
Very high power-to-size ratio
Wide and even horizontal coverage
pattern across the full bandwidth
Performing arts centers, theatres,
churches, and other fixed installations
Exceptional fidelity and transient
response for intelligibility and high-
impact
QuickFly rigging system with new
captive GuideALinks simplifies use in
flown or ground-stacked arrays
Touring sound reinforcement for mid-
sized venues
Seamless integration with MILO
Sidefill hangs with MILO in very large
venues
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MICA Vertical Splay and Coverage
125 Hz
250 Hz
500 Hz
1 kHz
These illustrations show how the splay between adjacent cabinets in a MICA
array may be adjusted to tailor coverage for a specific venue. The MAPP
Online plots on the right illustrate the vertical directivity characteristics of the
array on the left, with a section view of an example venue superimposed.
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Signal Flow for a Typical Reinforcement System
MICA loudspeakers permit versatile arrays and are compatible with other Meyer Sound reinforcement loudspeakers, giving sound designers
maximum freedom to customize systems for their needs. This block diagram illustrates the signal flow for a typical sound reinforcement
system using 12 MICA cabinets per side for the main arrays.
(12) MICA
(12) MICA
LD-3
Channel A
Main
Left
IN
SUB OUT
CH 1 OUT
CH 2 OUT
CH 3 OUT
Channel B
Main
IN
SUB OUT
CH 1 OUT
CH 2 OUT
CH 3 OUT
Right
Optional
Subwoofer
Mono
Channel A
INSERTS
IN SUB
SENDS
OUT
Full Range
IN CH 1
IN CH 2
IN CH 3
OUT
Post Array
OUT
Post Array
Post HPF
Channel B
INSERTS
SENDS
IN SUB
OUT
Full Range
IN CH 1
IN CH 2
IN CH 3
OUT
Post Array
OUT
Post Array
Post HPF
(6) 700-HP
(6) 700-HP
Digital Delay
Digital Delay/EQ
2 In x 6 Out
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MICA Specifications
Notes:
Acoustical
1. Recommended maximum operating
frequency range. Response depends
on loading conditions and room
acoustics.
2. Free field, measured with 1/3-octave
frequency resolution at 4 meters.
3. Measured with music referred to 1
meter.
1
Operating Frequency Range
60 Hz - 18 kHz
75 Hz - 17 kHz ±4 dB
1 kHz - 16 kHz ±30°
138 dB
2
Free Field Frequency Response
Phase Response
3
Maximum Peak SPL
Dynamic Range
>110 dB
Coverage
4. At these frequencies, the transducers
produce equal sound pressure levels.
5. Power handling is measured under
AES standard conditions: both
transducers driven continuously for
two hours with band-limited noise
signal having a 6 dB peak-average
ratio.
Horizontal Coverage
Vertical Coverage
100°
Varies, depending on array length and configuration
4
Crossover
1000 Hz
Transducers
6. Peak power handling is measured
with both transducers driven for 100
milliseconds with pink noise signal
having a 12 dB peak-average ratio.
7. The two drivers are coupled to a
100-degree horizontal constant-
directivity horn through a propri-
etary acoustical combining manifold
(REM).
8. Amplifier wattage rating based on
the maximum unclipped burst sine-
wave rms voltage that the amplifier
will produce for at least 0.5 seconds
into the nominal load impedance: 62
V rms low channels and 67 V rms high
channels.
Low/Low-Mid Frequency
Two high-power 10" cone drivers with neodymium magnets
Nominal impedance: 4 Ω
Voice coil size: 2"
Power handling capability: 1200 W (AES)5; 1800 W peak6
7
High Frequency
Two 3" compression drivers
Nominal impedance: 8 Ω
Voice coil size: 3"
Diaphragm size: 3"
Exit size: 1.2"
Power handling capability: 360 W (AES)5; 720 W peak6
Audio Input
9. Peak power based on the maximum
unclipped peak voltage that the
amplifier will produce for at least
100 milliseconds into the nominal
load impedance: 87 V pk low channels
and 95 V pk high channels.
10. AC power cabling must be of suf-
ficient gauge so that under burst
current rms conditions, cable trans-
mission losses do not drop voltage
below specified operating range at
the speaker.
Type
Maximum Common Mode Range
Connectors
Differential, electronically balanced
±15 V DC, clamped to earth for voltage transient protection
Female XLR input with male XLR loop output or VEAMall-in-one
connector (integrates AC, audio and network)
10 kΩ differential between pins 2 and 3
Pin 1: Chassis/earth through 220 kΩ, 1000 pF, 15 V clamp network
to provide virtual ground lift at audiofrequencies
Pin 2: Signal +
Input Impedance
Wiring
Pin 3: Signal -
Case: Earth ground and chassis
DC Blocking
CMRR
None on output, DC blocked through signal processing
>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 dBV (1 V rms, 1.4 V pk) continuous is typically the onset of
limiting for noise and music
Input Level
Audio source must be capable of producing a minimum of +20 dBV
(10 V rms, 14 V pk) into 600 Ω inorder to produce maximum peak
SPL over the operating bandwidth of the loudspeaker
Amplifier
Type
Four-channel complementary MOSFET output stages (class AB/H)
3020 W (four channels; 2 x 950 W, 2 x 560 W)
6000 W peak
8
Output Power
9
Total Output
THD, IM, TIM
Load Capacity
Cooling
<.02%
Made by Meyer Sound Laboratories
Berkeley, California USA
European Office:
4 Ω low and mid channels; 8 Ω high channels
Forced air cooling, four fans (two ultrahigh-speed reserve fans)
Meyer Sound Lab. GmbH
Carl Zeiss Strasse 13
56751 Polch, Germany
AC Power
Connector
250 V AC NEMA L6-20 twistlock, IEC-309 male, PowerCon, or VEAM
Automatic, two ranges, each with high-low voltage tap
(uninterrupted)
Automatic Voltage Selection
Safety Agency Rated Operating Range
Turn-on and Turn-off Points
Current Draw:
95 V AC - 125 V AC; 208 V AC - 235 V AC, 50/60 Hz
85 V AC - 134 V AC; 165 V AC - 264 V AC
MICA — 04.147.004.01 A
Copyright © 2005
Meyer Sound Laboratories Inc.
Idle Current
1.1 A rms (115 V AC); 0.55 A rms (230 V AC); 1.3 A rms (100 V AC)
5.4 A rms (115 V AC); 2.7 A rms (230 V AC); 6.2 A rms (100 V AC)
8.7 A rms (115 V AC), 4.3 A rms (230 V AC), 10.0 A rms (100 V AC)
24.6 A rms (115 V AC), 12.3 A rms (230 V AC), 28.3 A rms (100 V AC)
11 A rms (115 and 100 V AC), 15 A rms (230 V AC)
Max Long-Term Continuous Current (>10 sec)
10
meyer sound laboratories inc.
2832 San Pablo Avenue
Berkeley, CA 94702
Burst Current (<1 sec)
Ultimate Short-Term Peak Current Draw
Inrush Current
RMS Network
T: +1 510 486.1166
F: +1 510 486.8356
Equipped with two-conductor twisted-pair network, reporting
all operating parameters of amplifiers to system operator’s host
computer
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