Meyer Sound Portable Speaker MICA User Manual

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  
 
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.  
 
 
 
 
 
2 kHz  
 
4 kHz  
8 kHz  
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  
 
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  
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 VEAMall-in-one  
connector (integrates AC, audio and network)  
10 kdifferential between pins 2 and 3  
Pin 1: Chassis/earth through 220 k, 1000 pF, 15 V clamp network  
to provide virtual ground lift at audiofrequencies  
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 inorder 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 low and mid channels; 8 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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