L-Acoustics LA12X Manuel utilisateur
LA12X
product information
PRODUCT SERIAL NUMBER: ___________________________________
Document reference: LA12X product information version 1.0
Distribution date: April 21, 2016
© 2016 L-Acoustics. All rights reserved.
No part of this publication may be reproduced or transmitted in any
form or by any means without the express written consent of the
publisher.
[EN] Safety
3 LA12X product information version 1.0
[EN] Safety
Important safety instructions
Explanation of graphical symbols
The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user
to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of
important operating and maintenance instructions in the literature accompanying the product.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the grounding-type plug. A grounding-type plug has two blades
and a third grounding prong. The third prong is provided for your safety. If the provided plug does not
fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid
injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or
objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.
15. WARNING: To reduce the risk of fire or electric shock, this apparatus should not be exposed to rain
or moisture and objects filled with liquids, such as vases, should not be placed on this apparatus.
[EN] Safety
LA12X product information version 1.0 4
16. To completely disconnect this equipment from the mains, disconnect the power supply cord plug from
the receptacle.
Pour déconnecter complètement l'appareil du secteur, débranchez la prise de la fiche secteur.
17. The main plug of the power supply cord shall remain readily accessible.
La prise principale du cordon d'alimentation doit rester totalement accessible.
Additional important safety instructions
Verify the electrical conformity and compatibility of the mains supply.
Only connect the product to an AC power outlet rated 100-240 V, 50-60 Hz, with the following current values:
100-120 V: 30 A
200-240 V: 16 A
WARNING: The product is of CLASS 1 construction and shall be connected to a mains socket outlet with a
protective connection to earth.
When the product is used in a three-phase circuit, verify the electrical conformity and
compatibility of the three-phase circuit.
Verify that the three phases work, and balance the loads between the three phases.
Verify that the neutral and earth work.
Never try to emulate a 230 V circuit connecting an apparatus to two live wires of a 120 V three-phase circuit.
Never try to emulate a 200 V circuit connecting an apparatus to two live wires of a 100 V three-phase circuit.
Always interconnect a Class C circuit breaker between the product and the mains supply.
The circuit breaker current rating depends on the mains voltage rating, as follows:
100-120 V: 30 A
200-240 V: 16 A
Electrical generator
You must power on the generator before powering on the product.
Verify that the product is turned off before powering on the generator.
Terminals marked with the lightning flash symbol are HAZARDOUS LIVE.
The external wiring connected to these terminals requires installation by an instructed person or
the use of ready-made leads or cords.
Never attempt to touch any exposed speaker wiring while the product is operating: first disconnect the
connector from the product.
Mute all output channels before connecting a speaker to an amplified controller.
Do not connect a speaker output in parallel or series with any output of another amplified controller.
Do not connect the speaker outputs to any other voltage source, such as a battery, power mains, or
power supply, regardless of whether the amplified controller is turned on or off.
Never incorporate equipment or accessories not approved by L-Acoustics.
Read all the related PRODUCT INFORMATION documents shipped with the products before
exploiting the system.
Beware of sound levels.
Do not stay within close proximity of loudspeakers in operation.
Loudspeaker systems are capable of producing very high sound pressure levels (SPL) which can instantaneously
lead to permanent hearing damage to performers, production crew and audience members. Hearing damage
can also occur at moderate level with prolonged exposure to sound.
Check the applicable laws and regulations relating to maximum sound levels and exposure times.
Beware of over power risks.
Only use compatible loudspeakers with appropriate presets to avoid damage to the loudspeakers.
[EN] Safety
5 LA12X product information version 1.0
Inspect the product before operation.
If any sign of defect or damage is detected, immediately withdraw the product from use for maintenance.
This product is intended for use by trained personnel.
Do not use the product outside its operating temperature range.
The product operates at a room temperature between 0° C / 32° F and 50° C / 122° F.
Do not expose the product to direct sun.
Only use the product in a conformed electro-magnetic environment.
Conformed environments are specified in EN55103-2 standards as E1 (residential), E2 (commercial and light
industrial), E3 (urban outdoors), and E4 (controlled EMC environment, ex. TV studio).
Avoid radio interference.
This product has been tested and complies with the limits indicated in the EMC directive (Electro Magnetic
Compatibility). These limits are designed to provide reasonable protection against harmful interference from
electrical equipment, but it cannot be guaranteed that interference will never occur.
Read the USER MANUAL before operating the system.
Strictly follow the installation and operating instructions.
Read the maintenance section of this document before servicing the product.
Shipping
Use the original packaging for shipping the product, unless it is mounted in a rack with the front and rear panels
fixed to the rack, as described in the USER MANUAL.
Maintain this document as an integral part of the product.
Keep this document in a safe place.
Record in this document any maintenance operation performed on the product.
Do not resell the product without this updated document.
Symbols
The following symbols are used in this document:
This symbol indicates a potential risk of harm to an individual or damage to the product.
It can also notify the user about instructions that must be strictly followed to ensure safe installation or operation of
the product.
This symbol indicates a potential risk of electrical injury.
It can also notify the user about instructions that must be strictly followed to ensure safe installation or operation of
the product.
This symbol notifies the user about instructions that must be strictly followed to ensure proper installation or
operation of the product.
This symbol notifies the user about complementary information or optional instructions.
Welcome
LA12X product information version 1.0 6
Welcome
Thank you for purchasing the L-Acoustics LA12X amplified controller. The shipping carton should contain:
— 1 LA12X
— 2 rear rack support brackets
— 1 power cable
Depending on the country of distribution, the cable is fitted with a European CEE 7/7 plug (KC certified), a chinese type
GB1002 GB2099 16 A plug, a North American type NEMA L5-30 plug, or is left with bare ends (international cable).
Importer is required to fit a country specific plug, if necessary.
Each L-Acoustics product is tested and inspected before leaving the factory and should arrive in perfect condition.
After the careful opening of the shipping carton, check for any noticeable damage. If so, notify the shipping company
or the distributor immediately. Only the consignee may initiate a claim with the carrier for damage incurred during
shipping. Be sure to save the carton and packing materials to be inspected by the carrier.
Carefully read this document in order to become familiar with the product and to identify the external documents
containing essential information on installing and operating the product properly and safely. All the documents mentioned
hereafter are freely available on the L-Acoustics web site: www.l-acoustics.com
As part of a continuous evolution of techniques and standards, L-Acoustics reserves the right to
change the specifications of its products and the content of its document without prior notice. Please
check www.l-acoustics.com on a regular basis to download the latest document and software updates.
Manuals and procedures
Using the LA12X
Refer to the LA12X user manual for more information on installation and operation procedures.
Service and maintenance
It is essential to inspect the product on a regular basis to ensure performance and safety.
Any maintenance not recommended by L-Acoustics will void the warranty.
Contact L-Acoustics for any specific maintenance operation or information about the warranty.
Specifications
7 LA12X product information version 1.0
Specifications
All values given in this section are typical values.
General
output power CEA-2006 / 490A (1% THD, 1 kHz, all
channels driven) 4 x 1400 W RMS (at 8 Ω)
4 x 2600 W RMS (at 4 Ω)
4 x 3300 W RMS (at 2.7 Ω)
amplification class Class D
Digital Signal Processor (DSP) 2 x SHARC 32-bit, floating point, 96 kHz sampling rate
frequency response 20 Hz - 20 kHz ± 0.1 dB (at 8 Ω, 60 W output power)
± 0.1 dB (at 4 Ω, 120 W output power)
distortion THD+N (20 Hz - 10 kHz) < 0.05% (at 8 Ω, 60 W output power)
< 0.1% (at 4 Ω, 120 W output power)
output dynamic range (20 Hz - 20 kHz, 8 Ω, A-weighted) > 114 dB
amplification gain 32 dB
noise level (20 Hz - 20 kHz, 8 Ω, A-weighted) < - 72 dBV
channel separation (at 1 kHz , 3 x 120 W, 4 Ω) > 85 dB
damping factor > 400 (1 kHz and below, 8 Ω)
output delay 0 ms to 1000 ms
mains input power and current draw (all channels driven)
maximum output power 4 x 1400 W RMS at 8 Ω 4 x 2600 W RMS at 4 Ω 4 x 3300 W RMS at 2.7 Ω
1/3 output power (-5dB) 10.5 A / 2300 W 19 A / 4200 W 26 A / 5500 W
1/8 output power (-9 dB) 4.8 A / 1050 W 8.1 A / 1850 W 11.5 A / 2400 W
idle 1 A / 160 W 1 A / 160 W 1 A / 160 W
standby 0.6 A / 10 W 0.6 A / 10 W 0.6 A / 10 W
Current values given for mains rated at 230 V. Multiply by:
— 2.3 for 100 V
— 1.9 for 120 V
— 1.15 for 200 V
power supply
model universal Switched Mode Power Supply (SMPS) with
power factor correction (PFC)
power factor > 0.9 (except Standby on all voltages, and Idle on 230 V)
mains rating 100 V - 240 V ~ ±10%, 50-60 Hz
nominal current requirements 30 A for 100-120 V, 16 A for 200-240 V
operating conditions
temperature room temperature (from 0º C / 32º F to +50º C / 122º F)
Specifications
LA12X product information version 1.0 8
protection
mains and power supply over and under voltage
over temperature
overcurrent (fuse protection, and inrush current protection)
power outputs over current
DC
short circuit
rail over and under voltage
over temperature
transducers protection L-DRIVE:
excursion
temperature
over-voltage
cooling system fans with temperature-controlled speed
interface and connections
indicators 3 x LEDs for power, status and L-NET information
For each output: 7 x LEDs for mute, load, signal, levels and
limit/clip information
interface 2 x 24 characters LCD screen
output connectors 2 x 4-point speakON®
1 x 8-point CA-COM
L-NET connectors 2 x 1 Gb/s Ethernet etherCON®
Input Signal distribution
connectors
input 4 Neutrik® female XLR3, IEC 60268-12, ESD protected
link 4 Neutrik® male XLR3, IEC 60268-12, ESD protected
Neutrik, speakON, etherCON and powerCON are registered trademarks of Neutrik AG.
available input connectors vs. input mode
analog AB / analog CD IN A, IN B / IN C, IN D (4 connectors, 4 channels)
analog AB / digital CD IN A, IN B / IN C&D (3 connectors, 4 channels)
digital AB / analog CD IN A&B / IN C, IN D (3 connectors, 4 channels)
digital AB / digital CD IN A&B / IN C&D (2 connectors, 4 channels)
link connectors
analog input mode passively connected
digital input mode electronically buffered, failsafe relay
Specifications
9 LA12X product information version 1.0
Analog Input
input impedance 22 kΩ (balanced)
max. input level 22 dBu (balanced, THD 1%)
A/D conversion 4 cascaded 24-bit analog/digital converters (130 dB
dynamic range)
Digital Input
supported operating mode
standard AES/EBU (AES3)
sampling frequency (Fs) 44.1, 48, 88.2, 96, 176.4 or 192 kHz
word length 16, 18, 20 or 24 bits
synchronization signal resampled to internal clock at 96 kHz
Sample Rate Converter (SRC)
sampling frequency 96 kHz (SRC referenced to the amplified controller internal
clock)
word length 24 bits
dynamic range 140 dB
distortion (THD+N) < -120 dBfs
bandpass ripple ± 0.05 dB (20 Hz - 40 kHz, 96 kHz)
automatic fallback option
mode AB to CD
digital to analog
digital to digital
switchover conditions no clock, loss of lock, CRC error, bipolar encoding error or
data slip
constant delay independent of input Fs
constant level upon user setting of AES/EBU gain, independent of input
Fs
revert to AES/EBU upon manual user selection
input gain
range -12 dB to +12 dB
steps 0.1 dB
Specifications
LA12X product information version 1.0 10
Latency
analog and AES/EBU
in standard operating mode 3.84 ms (independent of the input sampling frequency)
in low latency operating mode 0.76 ms (independent of the input sampling frequency)
Remote control and monitoring
network connection dual-port Ethernet Gigabit interface
L-Acoustics remote control software LA Network Manager 2
third-party management solutions SNMP
Extron®
Crestron®
Extron is a registered trademark of Extron Electronics.
Crestron is a trademark or registered trademark of Crestron Electronics, Inc. in the United States, other countries or both.
Physical data
height 2U
weight 14.5 kg / 32 lb
finish black
protection rating IP2x
433 mm / 17.04 in
419.1 mm / 16.50 in
454.7 mm / 17.87 in
23.6 mm / 0.93 in
483 mm / 19 in
88 mm / 3.5 in
76.20 mm / 3 in
465 mm / 18.3 in
STATUS
LIMIT/CLIP
-5dB
-10dB
-20dB
SIGNAL
LOAD
LA12X
LA12X
L-NET
MENU
ESC OK
INPUTS A ~ DOUT 1 OUT 2 OUT 3 OUT 4POWER
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