Meyer Sound MICA User Manual

Page 2

Architect Specifications

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.

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 com-
plementary 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 high-
frequency drivers. Distortion (THD, IM, TIM) shall
not exceed 0.02%. Protection circuits shall include
TruPower limiting. The audio input shall be electroni-
cally 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 lock-
ing NEMA L6-20, IEC 309 male, PowerCon or VEAM
all-in-one.

The loudspeaker system shall incorporate the elec-
tronics module for Meyer Sound’s RMS remote moni-
toring 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 two-
position 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 band-
limited noise signal having a 6 dB peak-average ratio.

41.40" w x 13.37" h x 17.78" d
(1052 mm x 340 mm x 452 mm)
150 lbs (68.04 kg)
Premium birch plywood
Black textured
Powder-coated hex-stamped steel
MRF-MICA rigging frame, with captive
GuideALink connectors and quick-
release pins

Dimensions

Weight

Enclosure

Finish

Protective Grille

Rigging

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]

Case

220K

ESD

10K

Balanced

Loop

Input

Auto-Voltage Select

95-125V~ 208-235V~

50-60Hz 50-60Hz

2000W RMS MAX 2000W RMS MAX

Operational Voltage Range:

Turn on 85V~ Turn off 134V~

Turn on 165V~ Turn off 264V~

yti

vit

tes

Network

Remote Monitor System

THIS PRODUCT MUST BE GROUNDED

WARNINGS:

TruPower ™

MICA

High Ch Limit

Low Ch Limit

Active

Ω

3 -

2 +

Earth/Chassis

Ω

- CIRK-

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

- CIRK-