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L-Acoustics LA4 User Manual - page 20
LA4
LA4
LA4
LA4
Amplified Controller
Amplified Controller
Amplified Controller
Amplified Controller
USER MANUAL
USER MANUAL
USER MANUAL
USER MANUAL
VERSION 1.3.0.32A
LA4_UM_EN_1.3.0.32a
w w w . l - a c o u s t i c s . c o m
18
18
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18
6.5
Wiring
6.5.1
XLR input connectors
Two 3 pin male XLR input connectors are provided for channel A & B respectively as well as two 3 pin female XLR
input link connectors wired in parallel on channel A & B (see Figure 9).
XLR Input connectors are active balanced and wired according to IEC 268 as below:
Pin 1 Ground (Shield)
Pin 2 Hot (pos. signal)
Pin 3 Cold (neg. signal)
Figure 9: Input XLR connectors cabling
The input impedance is high enough (22 kΩ, balanced) to allow daisy-chaining or multiple parallel input connections.
To daisy chain amplified controllers use the male XLR connector (‘‘Link’’) to feed the input signal to the next unit in the
signal chain.
The headroom of the input circuits is high enough to accept the maximum output level from virtually any line level signal
source (up to 22 dBu).
Note: Symmetrical (balanced) shielded cables are highly recommended as balanced signals are less sensitive to AC hum
and radio interference. Unbalanced lines may result in noise especially over long cable runs.
Summary of LA4
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La la la la4 4 4 4 amplified controller amplified controller amplified controller amplified controller user ma user ma user ma user manual nual nual nual version 1.3. Version 1.3. Version 1.3. Version 1.3.0 0 0 0.32 .32 .32 .32a a a a w w w . L - a c o u s t i c s . C o m.
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W w w . L - a c o u s t i c s . C o m la4 la4 la4 la4 controleur amplifie controleur amplifie controleur amplifie controleur amplifie.
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 1 1 1 1 1 1 1 1 safety warnings safety warnings safety warnings safety warnings all information hereafter detailed applies for the l-acoustics ® la4 amplified controller, designated in this section as ‘‘the product’’. 1.1 symbol description 1...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 2 2 2 2 1.2 important safety instructions 1. Read this manual 2. Heed all sa...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 3 3 3 3 12. Interconnections when connecting the product to other equipment, turn off the power and unplug all of the equipment from the supply source. Failure to do so may cause an electric shock and serious personal injury. Read the user ma...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 4 4 4 4 20. Conditions which require immediate service refer all servicing t...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 5 5 5 5 1.3 ec declaration of conformity l-acoustics ® 13 rue levacher cintrat parc de la fontaine de jouvence 91462 marcoussis cedex france state that the following product: amplified controller, la4 is in conformity with the provisions of: ...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 6 6 6 6 2 2 2 2 contents contents contents contents 1 safety warnings 1 1.1 ...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 7 7 7 7 7.3.6 clear group parameters ........................................................................................................29 7.3.7 options .......................................................................................
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 8 8 8 8 3 3 3 3 introduction introduction introduction introduction 3.1 welc...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 9 9 9 9 4 4 4 4 system system system system approach approach approach approach 4.1 presentation the l-acoustics ® la4 amplified controller is at the heart of the l-acoustics ® integrated system approach. It offers cutting edge loudspeaker am...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 10 10 10 10 the la4 onboard factory preset library covers l-acoustics ® loud...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 11 11 11 11 5 5 5 5 la4 amplified controller la4 amplified controller la4 amplified controller la4 amplified controller 5.1 front and rear panels figure 3: la4 amplified controller front & rear panels 1 on/off switch 2 anti-dust cover 3 input...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 12 12 12 12 5.2 main features 5.2.1 simplified block diagram the la4 combine...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 13 13 13 13 figure 5: dsp architecture 5.2.3 a/d converters the la4 amplified controller is fitted with two cascaded 24 bit a/d converters with a sampling rate of 96 khz allowing a ground-breaking encoding dynamic of 130 db. 5.2.4 amplifier s...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 14 14 14 14 5.2.5 user interface the front panel user interface features qui...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 15 15 15 15 6 6 6 6 installation installation installation installation 6.1 mounting the la4 is two rack units high (2u) that can be mounted in an eia-standard 19’’ rack (figure 6). Four mount points are provided on the controller front panel...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 16 16 16 16 6.2 cooling the amplified controller uses a forced air cooling s...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 17 17 17 17 changing the plug must be done by qualified personnel only. The specific safety regulations of the country of use must be strictly applied. The plug must be approved for the specific voltage and current rating given in table 1. Th...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 18 18 18 18 6.5 wiring 6.5.1 xlr input connectors two 3 pin male xlr input c...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 19 19 19 19 6.5.2 speakon ® output connectors four 4-point speakon ® connectors, located at the back of the la4 controller, are for loudspeaker connection and are wired as follows: top left: pin 1+ out 1+ pin 1- out 1- pin 2+ out 2 + pin 2- o...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 20 20 20 20 6.5.3 l-net wiring the la4 can be connected to a network of seve...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 21 21 21 21 7 7 7 7 operation operation operation operation 7.1 quick access the la4 offers 3 quick access functions: mute, gain, and front panel locking. 7.1.1 output channel mute control tapping (less than 0.3 sec between clicks) one of the...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 22 22 22 22 7.1.2 input & output gain control gain control is also available...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 23 23 23 23 1. Preset allocation (1 to 99) 11 to 99: allocated oem memory locations for l-acoustics ® factory presets. 1 to 10: allocated memory locations for user presets (initialized from a factory preset). The store preset function (see se...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 24 24 24 24 7.3 user interface menu 7.3.1 introduction the user interface gi...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 25 25 25 25 arrows cursor convention and menu control to facilitate the navigation through menu control screens the lcd displays 2 types of arrow cursors: the position cursor (top left) and the selection cursor (top right). Position cursors: ...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 26 26 26 26 * if the controller is assigned to a group (see section 7.3.6) t...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 27 27 27 27 7.3.4 delete preset (user memories 1 to 10) the delete preset menu is for erasing a user preset previously saved in one of the 10 available user memory locations. To erase a user preset, select the delete preset menu and follow th...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 28 28 28 28 7.3.5 preset parameters the preset parameters menu is for settin...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 29 29 29 29 7.3.6 clear group parameters the clear group parameter function is for resetting to their nominal values all group parameters (name, gain, delay, and contour eq) set in the la network manager software (see the ‘‘la network manager...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 30 30 30 30 7.3.7 options the options menu is for setting the la4 ip address...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 31 31 31 31 network address menu page it is possible to connect up to 253 la4 or la8 amplified controllers in multiple network topologies via the proprietary l-net network. Each controller has to be identified within the network by its ip add...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 32 32 32 32 out rms voltage menu page the out rms voltage menu page displays...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 33 33 33 33 7.4 on screen messages in this section are listed all the messages that can be displayed on the controller lcd screen. The display mode (standing or blinking) depends on the message type. 7.4.1 start-up sequence when switched on, ...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 34 34 34 34 7.4.4 malfunctions malfunctions not leading to controller stop: ...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 35 35 35 35 7.5 led display 7.5.1 output signal display four bargraph displays are located on the front panel above the lcd screen (see figure 24). By default they monitor the state of each of the 4 amplifier output channels via 6 different l...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 36 36 36 36 7.5.3 routing and input signal display the four bargraph display...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 37 37 37 37 7.6 amplified controller protection systems most of the protection systems that insure the integrity of the unit’s electronic vital parts are managed by the operating system (os). This allows real-time monitoring and optimal perfo...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 38 38 38 38 7.7 l-drive: transducer protection system the new l-drive protec...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 39 39 39 39 8 8 8 8 care and maintenance care and maintenance care and maintenance care and maintenance 8.1 maintenance information l-acoustics ® amplified controllers are quality units and should provide years of trouble-free services when o...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 40 40 40 40 figure 28: la4 filter assembly 8.3 troubleshooting this section ...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 41 41 41 41 8.3.1 no power, no sound, or sound level too low lcd screen lit? Main screen displayed? Signal led blinking? Outputs muted? Signal input presence? ** output gain too low? * screen displayed message on screen? Speaker cables connec...
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La4 la4 la4 la4 amplified controller amplified controller amplified controller amplified controller user manual user manual user manual user manual version 1.3.0.32a la4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 42 42 42 42 8.3.2 poor sound quality 8.3.3 overheating overheating controlle...
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La4_um_en_1.3.0.32a w w w . L - a c o u s t i c s . C o m 43 43 43 43 9 9 9 9 specifications specifications specifications specifications output power eia (1 % thd, 1 khz, all channels driven) 4 x 800 w @ 8 Ω (4 x 930 w peak) / 4 x 1000 w @ 4 Ω (4 x 1600 w peak) max output voltage 125 v (peak voltag...
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W w w . L - a c o u s t i c s . C o m la4 la4 la4 la4 controleur amplifie controleur amplifie controleur amplifie controleur amplifie.
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W w w . L - a c o u s t i c s . C o m.
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W w w . L - a c o u s t i c s . C o m document reference: la4_um_en_1.3.0.32a _________________ © copyright 2009 by l-acoustics ® parc de la fontaine de jouvence, 91462 marcoussis cedex, france _________________ distribution date: august 26 th , 2009 p ri n te d o n r e c y cl e d p a p e r.