Meyer Sound MICA User Manual

DATA S H E ET

MICA : Compact High-Power Curvilinear Array

Loudspeaker

M S E R IES

MICA™ is a self-powered, three-way loud­speaker 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 high­power 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.

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.

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

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 constant­directivity 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.

All four MICA transducers are designed and
manufactured in-house, and are driven by
an integral, four-channel class AB/H ampli­fier that provides 3020 watts of total out­put power (6000 watts peak). The inte­grated amplifier/processing circuitry includes
TruPower® limiting to protect the drivers
and hold long-term power compression to
less than 1 dB. The field-replaceable elec­tronics module incorporates Meyer Sound’s
Intelligent AC™ power supply, which auto­matically adjusts for any line voltage world-

wide and provides both soft turn-on and
transient protection. The MICA loudspeaker
comes with the RMS™ remote monitoring
system interface installed. RMS offers com­prehensive monitoring of system parameters
on a Windows®-based network.

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 configu­rations. 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.*

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.

*Restrictions apply; see the MG-MICA Assembly Guide for more
information.

Very high power-to-size ratio

Exceptional fidelity and transient
response for intelligibility and high­impact

Seamless integration with MILO

Wide and even horizontal coverage
pattern across the full bandwidth

QuickFly rigging system with new
captive GuideALinks simplifies use in
flown or ground-stacked arrays

applicationsfeatures & benefits

Performing arts centers, theatres,
churches, and other fixed installations

Touring sound reinforcement for mid­sized venues

Sidefill hangs with MILO in very large
venues

Architect Specifications

41.40

[1052mm]

43.88

[1115mm]

13.37

[340mm]

11.58

[294mm]

9.00

[229mm]

6.40

[163mm]

7.30

[185mm]

8.44

[214mm]

11.38

[289mm]

22.80

[579mm]

17.78

[452mm]

1

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220

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Balanced

Loo

pInput

Auto-Voltage Select
95-125V~ 208-235V

~

50-60Hz 50-60H

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2000W

RMS MAX 2000W RMS MAX

Operational

Voltage Range:

Turn

on 85V~ Turn off 134V~

Turn

on 165V~ Turn off 264V~

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Network

Remote

Monitor System

THIS PRODUCT MUST BE GROUNDED

WARNINGS:

TruPower™

MICA

High Ch Limit

Low

Ch Limit

Activ

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Ω

3 -

2 +

Earth/Chassi

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Ω

P

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-

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T

ATENCIÓN:

ACCESO INTERNO SOLO

AUTORIZADO

A PERSONAL TÉCNICO CALIFICADO

ACHTUNG:

GEHÄUSE NICHT ÖFFNEN WARTUNG

UND

REPARATUR NUR DURCH ELEKTROFACHKRÄFTE

ATTENTION:

ENTRETIEN ET REPARATIONS
INTERNES NE SONT AUTORISEES QU'AU
PERSONNEL

TECHNIQUE QUALIFIÉ

UK WARNING:
THIS APPARATUS MUST BE EARTHED.
NO

OPERATOR SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED PERSONNEL:

This surface may reach high temperatures while in use.
To

ensure proper operation, allow at least 6 inches
clearance

from this surface and adequate ventilation.
No

operator serviceable parts inside.
Refer

servicing to qualified personnel.
To reduce the risk of fire or electric shock
do

not expose this appliance to rain or moisture.

Meyer Sound, Berkeley, CA, USA

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1 1

The loudspeaker shall be a self-powered, full-range
unit for deployment in line array systems. The low/
low-mid frequency transducers shall consist of two
10-inch cone drivers, rated to handle 1200 watts AES*
(1800 watts peak). The high-frequency transducers
shall consist of two 3-inch diaphragm, 1.2-inch exit
compression drivers, rated to handle 360 watts AES*
(720 watts peak) coupled via a custom manifold to a
100-degree horizontal constant-directivity horn.

The loudspeaker shall incorporate internal processing
and a four-channel amplifier. Processing functions
shall include equalization, phase correction, driver
protection and signal division for the two frequency
sections. The crossover point shall be 1000 Hz. An
additional low-frequency crossover shall cause the
two low/low-mid frequency transducers to work in
combination between 60 Hz and 320 Hz, with only one
working up to the crossover frequency to maintain
optimal polar characteristics.

Each amplifier channel shall be class AB/H with com­plementary MOSFET output stages. Burst capability
shall be 3020 watts total (6000 watts peak) with two
channels at 950 watts into a nominal 4-ohm load for
the low and low-mid drivers and two channels at
560 watts into a nominal 8-ohm load for the high­frequency drivers. Distortion (THD, IM, TIM) shall
not exceed 0.02%. Protection circuits shall include
TruPower limiting. The audio input shall be electroni­cally balanced with a 10 kOhm impedance and accept
a nominal 0 dBV (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.
CMRR shall be greater than 50 dB (typically 80 dB, 50
Hz – 500 Hz).

Performance specifications for a typical production
unit shall be as follows, measured at 1/3-octave
resolution: Operating frequency range shall be 60 Hz
to 18 kHz. Phase response shall be ±30° from 1 kHz to
16 kHz. Maximum peak SPL shall be 138 dB at 1 meter.
Beamwidth shall be 100 degrees horizontal. Vertical
coverage in multi-cabinet arrays shall be dependent
on system configuration.

The internal power supply shall perform automatic
voltage selection, EMI filtering, soft current turn-on
and surge suppression. Powering requirements shall
be nominal 100, 110, or 230 V AC line current at 50 Hz
or 60 Hz. UL and CE operating voltage range shall be
100 to 230 V AC. Maximum peak current draw during
burst shall be 8.7 A at 115 V AC and 4.3 A at 230 V AC.
Current inrush during soft turn-on shall not exceed
11 A at 115 V AC. AC power connectors shall be lock­ing NEMA L6-20, IEC 309 male, PowerCon or VEAM
all-in-one.

The loudspeaker system shall incorporate the elec­tronics module for Meyer Sound’s RMS remote moni­toring system.

All loudspeaker components shall be mounted in an
enclosure constructed of premium birch plywood with
a hard and damage-resistant black textured finish.
The front protective grille shall be powder-coated,
hex-stamped steel. To build flown or ground-stacked
loudspeaker arrays, linking to the grid and between
cabinets shall be accomplished with QuickFly rigging
hardware using captive GuideALinks allowing 10 rear
splay angles between 0 and 6 degrees, with a two­position front link settable at 0 or 7 degrees.

Dimensions shall be 41.40" wide by 13.37" high (cabinet
front) by 17.78" deep (1052 mm x 340 mm x 452 mm).
Weight shall be 150 lbs (68.04 kg).

The loudspeaker shall be the Meyer Sound MICA.

*Both transducers driven continuously for two hours with band­limited noise signal having a 6 dB peak-average ratio.

Dimensions

41.40" w x 13.37" h x 17.78" d

(1052 mm x 340 mm x 452 mm)

Weight

150 lbs (68.04 kg)

Enclosure

Protective Grille

Rigging

Premium birch plywood

Finish

Black textured

Powder-coated hex-stamped steel

MRF-MICA rigging frame, with captive

GuideALink connectors and quick-

release pins

About the Vertical Directivity Plots

The color images accompanying the upper diagram on the facing page are sound
intensity plots made using the Meyer Sound MAPP Online® acoustical prediction
program, a unique and highly accurate visualization tool for professional sound
system designers.

Using an Internet-connected personal computer, the designer
specifies Meyer Sound loudspeaker models, their locations,
how they are aimed and, optionally, the locations and
composition of walls. This information travels over the Internet
to a powerful server computer at Meyer Sound headquarters
in Berkeley, California. Running a sophisticated algorithm
and using highly accurate measured data that describe each
loudspeaker’s directional characteristics, the server predicts
the sound field that the loudspeakers will produce, forms
a color representation, and sends the result back for the
designer’s computer to display.

In these sound field plots, the color spectrum is used to represent
levels of sound intensity, with red being the loudest and blue
being the softest, as shown in the scale to the immediate right.
These examples illustrate coverage characteristics for an array
whose splay angles have been tailored to the actual venue; a
section view of the venue has been superimposed on the MAPP
Online plots.