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LA8 AMPLIFIED CONTROLLER

1. Exception If the Auto MDI MDIX functionality is not available on a switch used to build a star or hybrid topology use a crossover cable between the switch and each controller Network and cable specifications The L NET network is rated at 100 Mbps A straight through cable has pin of one side connected to pin of the other side pin 2 to pin 2 etc A crossover cable has pin pairs 1 2 and 3 6 crossed The type of a cable can be directly identified comparing the wire colors between its two RJ45 connectors CAT5e U FTP stands for a category 5 unshielded cable with foiled twisted pairs Using lower category cables or CAT5e patch cables will result in connection issues The maximum length for a typical CAT5e U FTP cable is 100 m 328 ft This value is indicative and can vary depending on the quality of the cable LAS UM EN 7 0 WWW L ACDUSTICS COM 21 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 5 OPERATION 5 1 Powering on powering off standby mode P Press the power switch up to power the LA8 on see Figure 13 The LA8 goes through a 9 second start up sequence coming with Initializing Controller displayed on the LCD screen and all LED lit for test The LA8 will be ready for use when the main screen is displayed refer to section 5 3 2 Initializina Controller power switch up Figure 13 Start up sequence P Press the power switch down to power the LAB off see Figure 4 The LA8 goes throu
2. The circuit breaker current rating depends on the mains voltage rating as follows 16 A for 230 V or 30 A for 120 V LA8 LA8US 15 A for 200 V or 30 A for 100 V LA8JP LAB UM EN 7 0 WwWwW L ACDUSTICS COM 15 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 4 3 4 Electrical generator You must power on the generator before powering on the amplified controllers Verify that the amplified controllers are turned off before powering the generator on Planning the power of the generator in kVA Take the nominal values of the LA8 and U Look for the cos of the generator and its recommended operating range Then apply the following formula x U cos x range For instance for LA8 in Europe 16 A and U 230 V With a typical generator cos 0 8 and range 70 96 Then the generator must be capable of delivering 16 x 230 0 8 x 0 70 6 5 kVA 4 3 5 Power plug e The LAS is supplied with a CEE 7 7 power plug 16 A 250 V grounded e The LA8US is supplied with a NEMA L5 30P power plug 30 A 125 V grounded e The LA8JP is supplied with the power plug selected by the Japanese distributor Plug connection A Strictly apply the specific safety regulations of the country of use Verify that the plug conforms to the specific voltage and current rating given in Table Do not disable the ground connection of the supplied AC power cord using an adaptor or any other methods A new fixed power panel with larger gau
3. LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 WWW L ACOUSTICS COM LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 SAFETY INSTRUCTIONS 2 3 4 Read this manual Follow all SAFETY INSTRUCTIONS as well as DANGER and OBLIGATION warnings Never incorporate equipment or accessories not approved by L ACOUSTICS Read all the related PRODUCT INFORMATION documents before exploiting the system The product information document is included in the shipping carton of the related system component Environments Use the product only in El E2 E3 or E4 environments according to EN55103 2 standard Radio interference A sample of this product has been tested and complies with the limits for the EMC Electro Magnetic Compatibility directive These limits are designed to provide reasonable protection against harmful interference from electrical equipment However there is no guarantee that interference will not occur in a particular installation Power cord caution Do not use the product if the power cord is broken or frayed Protect the power cord from being walked upon or pinched particularly at the plugs and the point where the power cord exits from the apparatus Mains supply Only connect the LA8 CE type or LA8US US type to an AC power outlet rated 230 V 16 A 50 60 Hz or 120 V 30 A 50 60 Hz Only connect the LA8JP Japan model to an AC power outlet rated 100 V 30 A 50 60 Hz or 200 V 15 A 50 60 Hz T
4. LAS UM EN 7 0 WWW L AGOUSTIOGS GUM 8 3 LAS AMPLIFIED CONTROLLER 3 1 Main features 3 1 1 Front and rear panels I 2 c 4 B E J E H 8 s P d AB d i H v LE H ol Li HE NA pace Pi a Figure 2 LA8 front and rear panels LED meters 7 input selection menu keys See 8 output selection keys audio level 25 10 5 dB ee y SIGNAL presence 9 analog audio IN LINK connectors XLR udn oed IO L NET network IN OUT connectors RJ45 L NET network control LED l digital audio IN LINK connectors XLR LCD screen 12 SpeakON output connectors nav edit encoder wheel 13 CA COM output connector ower switch P I4 ventilation grill E ue e ues ventilation foam filter 15 A C power cord LAS UM EN 7 0 WWW L ACQUSTICS COM e LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 3 1 2 Simplified block diagram The core of the LA8 is a DSP engine driving four channels of amplification from two inputs The LA8 also features a flash memory for preset storage and management high performance A D D A converters for audio signals an auto sensing SMPS Switched Mode Power Supply a front panel user interface and a Fast Ethernet device for network remote control Figure 3 LA8 simplified block diagram 3 2 Signal processing and amplification 3 2 1 Analog input The LA8 can be fed with two balanced analog audio signals using the appropriate XLR input ports see Figure 2 Each of the ana
5. LA NETWORK MANAGER refer to the LA NETWORK MANAGER video tutorial Table 5 Functionalities locked or protected by PIN code Locked PIN code protected When the protection is enabled each time one tries to use a protected functionality the LCD screen displays ACCESS LOCKED or ENTER PIN see Figure 24 ENTER PIN Figure 24 Lock and PIN code protection messages In the first case the functionality cannot be accessed Press the ESC key to abort In the second case access the functionality entering the PIN code as follows see Figure 25 Press and hold the OUTI key or press the ESC key to abort Turn the encoder wheel to select the first digit of the PIN code Release the OUTI key Repeat the procedure for keys OUT2 to OUT4 and their associated digits Press the OK key If the controller displays ENTER PIN it means that the PIN code is wrong Repeat the procedure to make corrections or press the ESC key to abort Else the functionality is displayed and can be accessed until you leave the current menu press OUTI VVVV V ENTER PIN Figure 25 Entering a PIN code n Disabling the protection The lock PIN code protection can only be disabled from LA NETWORK MANAGER by entering the password defined for the specific amplified controller refer to the LA NETWORK MANAGER video tutorial LAS UM EN 7 O WWW L ACOUSTIC S C OM 29 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 54 LOAD PST
6. nominal voltages of 120 230 V 4 10 96 LA8 LA8US or 100 200 V 4 10 96 LA8 P The mains voltage is continuously monitored for under and over voltage as well as for failure in alternating cycles If the mains voltage reaches a value 30 96 below nominal or 10 96 above nominal or if it skips about two cycles the SMPS is switched off and the outputs are muted The controller displays Waiting SMPS see the figure on the right A soft start sequence will automatically be engaged as soon as the mains voltage returns to nominal state If the mains voltage reaches a value between 30 96 and 20 96 below nominal the outputs are muted and the controller displays Fuseprotect see the figure on the right Normal operation will resume as soon as the mains voltage returns to nominal state Mains current The SMPS is continuously monitored for current peaks and over current The average mains current can peak temporarily at values several times higher than the nominal value supported by the internal fuse of the controller If the current peaks too frequently the amplitude of the output signals are attenuated by to 6 dB in order to prevent the SMPS fuse from blowing The controller displays Fuseprotect see the figure on the right The protection will automatically be disengaged as soon as the mains current returns to supported conditions If an over current is detected the SMPS is switched off and the controller displays Waiting SMPS see
7. 28 gt From the main menu select DELETE PRESET If the controller displays NO PRESETS AVAILABLE it means that all user memories are empty Press the ESC key to abort END Else continue the procedure Turn the encoder wheel to scroll through the user presets Press the OK key or the encoder wheel to select a preset or ESC to abort The controller displays ARE YOU SURE P Press the OK key or the encoder wheel to validate or ESC to abort If the main screen is displayed it means that the selected preset has been deleted If the controller displays CANNOT DELETE THE CURRENT PRESET it means that the selected preset is the current preset thus it is not possible to delete it Press the ESC key to abort vv 128 0 0 M USER PRESET DELEITE USER PRESET BB1 MY 5628 60 ARE YOU SURE DELETE USER FRESET ala KI Figure 28 Deleting a user preset 5 7 PRESET PARAMETERS The preset parameters gain delay polarity and routing of the current preset can be set individually for each output channel or channel set see the following INFORMATION note nm Channel set In certain presets some channels are interdependent and form what is called a channel set Within a channel set the user preset parameters are common to all channels On the LCD screen the channel sets are indicated by brackets displayed above the corresponding output channel keys For example Figure 29 shows on the left a preset composed of two channel sets LF H
8. 37 Setting the AES EBU GAIN LAS UM EN 7 0 WWW L ACOUS TICS C OM 37 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 5 10 MONITORING amp INFO This menu provides real time measurements to monitor the output channels and provides the versions of embedded software In more details the MONITORING AND INFO menu allows to e Display in real time the RMS output voltage and output temperature for each output channel The output voltage is given in percentage of the maximum value supported by the particular transducer section connected The temperature is given in percentage of the operating range e Display the firmware and factory preset library versions e Display the controller s MAC address Figure 38 shows all pages of the MONITORING AND INFO menu Each one is detailed in sections from 5 10 1 to 5 10 5 LSPK HA TOUT CH TEMP dd 44 42 FFIRMWARE U2 1 6 TPRESET LIBRARY Ud a tMAC ADD MMS ies Si Figure 38 MONITORING amp INFO menu page 5 10 1 SPK HANDLING This page displays the RMS voltage measured at each individual amplifier circuit output as a percentage of the maximum voltage supported by the particular speaker section connected to it For example in Figure 38 the RMS voltage of channels OUT to OUT 4 is respectively 12 10 13 and I 9 of the maximum values 5 10 2 OUT CH TEMP This page displays the temperature of each individual amplifier channel circuit as a percentage of the
9. FACTORY DEFAULT SETTINGS siese nee eis ese bis ee es DER ewe Ese E See Ge eN es KLANG ANNA GANAN APPENDIX A PROTECTION SYSTEMS APPENDIX B APPROVALS APPENDIX C SPECIFICATIONS LAS UM EN 7 0 WWW L AGOUSTIGS GUM 6 22 22 23 23 24 24 25 25 28 29 30 3l 32 32 34 35 35 36 37 38 38 38 38 39 39 39 40 40 41 4l 42 44 45 1 PRESENTATION At the heart of the L ACOUSTICS integrated system approach the LA4 and LA8 amplified controllers offer cutting edge loudspeaker amplification DSP network control and comprehensive system protection in a single ergonomic package Based on similar platforms the exceptional and ground breaking performance level delivered by the LA4 and LA8 units allow full optimization of the resources of all L ACOUSTICS systems and deliver outstanding audio quality combined with the best possible transducer protection The LA4 and LAG share the following characteristics e A 2U lightweight format for high amplified density e A four channel high efficiency amplifier section fed by two inputs e ADSP section featuring advanced filter algorithms and an exclusive L DRIVE protection system for the transducers allowing optimum system performance e Anon board preset library to cover all the principal L ACOUSTICS loudspeaker system configurations e An intuitive and ergonomic user interface fully accessible from the front panel for standalone operation e Two I O Ethernet ports f
10. OE esa M PLN OE OMM 9 3 1 1 PCIE ande panel ae ESE EE Si DE OE ER Ee Re AA 9 3 1 2 Simplified rore dia i e IER sis EE ER E TO OO ED SE GR EE DR Ee O01 EM 10 3 2 Signal processing and alm el ie ses oes sea EE TT 10 3 2 1 ANOS MAD De EE oo EE EE AA AA EN 10 3 2 2 AES BEd Fe N ie EE OE E E E EE EE E E 3 2 3 Biggs resp 12 3 2 4 Amplifier section and power supply iese de AE ee GR ee ee GR AA ee GANG GR ed ee ee ee ee ee de ee ee ee 13 3 2 5 oes deel ell AR AE EE EE OE a AA OE 13 3 3 Monitoring and COMET Ol RE Ed OE Ee EE EE AA EE EE AA 13 3 3 1 dos Eed e TT T 13 3 3 2 L NET and remote control network iss sesse ees ees see ee ede ee Gee Ge Ge Ge ee NLANG AA AGE AG AG ee ee ee 13 4 INSTALLATION 14 4 Mee EE OE RA EE OR AA 14 dad S A EE EO OR OE EE 15 4 3 Boedel BE AA 15 4 3 AC mains SPE CIC ALIONS foes oe tana ER 15 4 3 2 TAKEN El ENE sai AN D ance ee QUT 15 4 3 3 AA ON 15 4 3 4 Reg a AN l6 4 3 5 mios zia Ui tT ER OR EA ET EE l6 4 3 6 KON COIS ATI IO IN sessie NE n l6 4 3 7 Example or de ei on EE OE N EI EA du mut at UM Es SUI UE RN EA e vane l6 LAB UM EN 7 0 WWwW L ACDQDUSTICS COM 5 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 44 A dioandnetw rk ebline is sie EE Eoo 0M 4 4 1 Connection ane CA GR 4 4 2 Analog audio cabling EE OE NC Em 4 4 3 AES EBU digital audio cabling sissies 4 4 4 Loud peake DINGE NAA AA E E AA EG err
11. OUT 3 and OUT 4 respectively from left to right see Figure 22 input level input selection input mode and status output group assignation Figure 22 Pressing ESC or OK The LED SIGNAL to CLIP indicate the level of the signal on the corresponding input channel For example in Figure 22 the signal of channel IN A has a level of 10 dB and the signal of channel IN B has a level of 20 dB nm Input voltage values The SIGNAL LED is lit when the input voltage reaches 38 dBu analog audio source or 60 dBfs digital audio source The CLIP LED is lit when the input voltage reaches 22 dBu analog audio source or 0 1 dBfs digital audio source Reminder 38 dBu 10 mV and 22 dBu 9 8 V The LOAD LED is lit if the corresponding input channel is part of the input selection of at least one output channel see also section 5 2 1 For example in Figure 22 both channel IN A and IN B are selected The top line of the LCD screen indicates the input mode and status of the input channels see also section 5 9 1 For example in Figure 22 IN A and IN B receive an AES EBU signal of 44 1 kHz The bottom line of the LCD screen indicates the group assignation of the corresponding output channel see also section 5 8 For example in Figure 22 channels OUT and OUT 2 are linked by brackets it means that they are assigned to the same group or set of groups if an output channel is assigned to several groups the group name is mult
12. YOU SURE E P HL 2S3 ESCIO LOAD PRESET x 148 FLAT LHE CLEAR GROUP PARAN OK OUTPUTS MUTED 58 SBZ8 6 116 SB H SE SB_E group parameters still active Figure 26 Loading a preset example with a factory preset nm Complements about the LOAD screen The upper line of the screen displays the preset family allowing coarse selection while the bottom line displays the preset name allowing preset selection within a family If the name of the displayed preset has been modified user presets only P Press and hold the encoder wheel to display the original name When returning to the main screen the preset names containing more than characters are not fully displayed and are followed by ellipsis P Turn the encoder wheel to display the full name for 2 seconds LAS UM EN 7 0 WWW L ACOUSTICS COM 30 5 5 STORE PRESET The current preset and the possible setting modifications can be stored to a user memory 1 10 Modifications flag The modifications of the preset parameters are indicated by a star sign on the top right corner of the LCD screen until the preset has been stored to a user memory or set to its initial settings There is a risk of loosing the preset parameter modifications Preset parameter modifications refer to section 5 7 are not automatically saved to the current preset they will be lost if the preset is reloaded prior to storing it e g while the star
13. analog level value so as to ensure seamless fallback switch from AES EBU to analog inputs in case of fallback mode activation refer to section 5 9 2 The AES EBU GAIN must be set according to the analog audio source s calibration based on manufacturer s specs or user measurements and the amplified controller s analog inputs calibration 0 dBfs for an input signal of 22 dBu The three following examples illustrate the most common cases e If the analog audio source is calibrated at 18 dBu for O dBfs set the AES EBU GAIN to 4 dB e If the analog audio source is calibrated at 24 dBu for O dBfs set the AES EBU GAIN to 2 dB e If the analog audio source is calibrated at 22 dBu for O dBfs or if the fallback option is disabled set the AES EBU GAIN to 0 dB To set the AES EBU GAIN follow these steps see Figure 37 gt gt gt TRES EBU GAIN From the main menu select INPUT SETTINGS and press the OK key or the encoder wheel or ESC to abort Turn the encoder wheel to select AES EBU GAIN While holding the ESC OK or OUTI key turn the encoder wheel to select an input gain value and release the key The setting applies in real time when turning the encoder wheel Value setting resolution gt Turn the encoder wheel to obtain a O l step resolution D Press and turn the encoder wheel to obtain a step resolution hold OUTI YN release 5 tRES EBU GAIN HES EBU GHIN 0 BdB 47 AdE 2 HE Figure
14. delay unit follow these steps From the main menu select OPTIONS and press the OK key or the encoder wheel or ESC to abort Turn the encoder wheel to select DELAY UNIT Press the OK key or the encoder wheel to enter the page or ESC to abort Turn the encoder wheel to select the chosen setting vvvvyv Press the OK key or the encoder wheel to validate the setting or ESC to abort For example in Figure 39 the delay unit has been modified from ms to METERS LAS UM EN 7 0 WWW L AGOUSTIGS GUM 40 5 11 3 SCREEN CONTRAST gt vv vV wv To set the LCD screen contrast follow these steps From the main menu select OPTIONS and press the OK key or the encoder wheel or ESC to abort Turn the encoder wheel to selecc SCREEN CONTRAST Press the OK key or the encoder wheel to enter the page or ESC to abort Turn the encoder wheel to select a value between 0 and 100 96 Press the OK key or the encoder wheel to validate the setting or ESC to abort For example in Figure 39 the screen contrast has been modified from 100 96 to 30 96 5 11 4 RESET TO FACTORY DEFAULT SETTINGS To reset the amplified controller to its factory default settings follow these steps see Figure 39 From the main menu select OPTIONS and press the OK key or the encoder wheel or ESC to abort Turn the encoder wheel to select RESET TO FACT ORY DEFAULT SETTINGS The controller displays RESET AMP TO FACTORY ARE YOU SURE Press the OK key
15. grp OUT 3 is not assigned to any group and OUT 4 is assigned to a group named All LAS UM EN 7 0 WWW L ACDOLSTICS GOM 27 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 5 3 2 Main menu The main menu gives access to the pages described in the following table Please refer to the appropriate sections for detailed instructions LA NETWORK MANAGER software All parameters in each amplified controller can also be set from LA NETWORK MANAGER software refer to the LA NETWORK MANAGER video tutorial Table 4 Main menu description LOAD PST USER load a user preset memories 1 10 LOAD PST FACTORY load a factory preset memories 11 199 STORE PRESET save the current preset including the current settings as a user preset memories 1 10 DELETE PRESET delete a user preset memories 1 10 PRESET PARAMETERS set the gain delay polarity and routing parameters CLEAR GRP PARAMS remove the group parameters defined in LA NETWORK MANAGER software name gain delay and contour EQ INPUT SETTINGS set the input mode fallback mode and AES EBU gain display real time measured values RMS output voltage and output temperature in percentage of the maximum values MONITORING amp INFO f i display the firmware and factory preset library versions display the controller s MAC address set the controller s IP address OPTIONS set the delay unit and LCD screen contrast reset all parameters to factory defaults To select a menu page
16. is not allowed since the controller is driven by LA NETWORK MANAGER Press the ESC key to abort END If the controller displays NO GROUP DEFINED CANNOT CLEAR it means that the operation is not possible as no group is defined Press the ESC key to abort END If the controller displays ARE YOU SURE OUTPUTS MUTED it means that the operation can be continued and that all outputs will be muted in the process Continue the procedure P Press the OK key or the encoder wheel or ESC to abort If the main screen is displayed it means that all group parameters are now reset and all outputs are muted TCLEHRE GRP PHRAMS ARE YOU SURE OPTIONS OUTPUTS MUTED Figure 31 Clearing the group parameters Group parameters persistence The group parameters remain active even if the controller is disconnected from the computer running LA NETWORK MANAGER controller in the standalone mode and they are not preset dependent they will remain the same even if a new preset is loaded Therefore when getting a controller for a standalone application that has been previously used within a network L ACOUSTICS recommends using the CLEAR GRP PARAM function to clear all group parameters as they cannot be seen and accessed via the front panel user interface nm Group information It is possible to verify if a controller is part of a group and to identify its name pressing and holding the IN A or IN B key from the main screen refer to secti
17. maximum operating temperature 85 C 100 For example in Figure 38 the temperature of channels OUT to OUT 4 is respectively 44 42 43 and 42 96 5 10 3 FIRMWARE This page displays the version of LA8 firmware in use in the controller For example Figure 38 shows LA8 firmware version 2 1 0 0 Network Always ensure that all LA8 amplified controllers used in a given network run the same firmware version LAS UM_EN_7 0 WWW L AGUOUSTICGS C OM 38 5 10 4 PRESET LIBRARY This page displays the version of the preset library in use in the controller For example Figure 38 shows preset library version 4 0 nm PRESET LIBRARY description Refer to the PRESET GUIDE for full description of the factory presets 5 10 5 MAC ADDRESS This page displays the MAC Media Access Control address of the amplified controller This address unique to each controller is the equivalent of a serial number and identifies the controller internationally It is set by the manufacturer and cannot be modified For example in Figure 38 the MAC address is 00 1B 92 01 02 1B 5 11 OPTIONS This menu allows setting the amplified controller s general parameters These parameters are the following e IP address e delay unit ms meters feet or samples e LCD screen contrast An additional function allows resetting the amplified controller to its factory default state Figure 39 shows all pages of the OPTIONS menu Each one is detailed in s
18. or the encoder wheel to confirm or ESC to abort The start up sequence is launched refer to section 5 1 When complete the main screen is displayed with the default preset memory 011 and IP address 100 indicating that the amplified controller has returned to its factory default settings and that all user memories have been deleted nm Disconnect the controller from LA NETWORK MANAGER It is recommended to disconnect the controller from LA NETWORK MANAGER before using the RESET TO FACTORY DEFAULT SETTINGS function In the contrary case if a virtual unit is present in the workspace at IP address 00 with a preset of same family as preset Ol I its parameters will automatically be loaded to the controller after reset and restart LAS UM EN 7 0 WWW L ACOUSTIC S C OM 41 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 APPENDIX A PROTECTION SYSTEMS The LA8 electronic vital parts are continuously monitored by the embedded operating system to optimize the power resources while ensuring safety even under extreme conditions Each time a protection system is activated a warning message blinks on screen and the L NET LED also blinks in red nm Remote monitoring In LA NETWORK MANAGER the activation of a protection system is indicated by an Event Message refer to the LA NETWORK MANAGER video tutorial Mains Mains voltage The LA8 amplified controller uses an auto sensing SMPS Switched Mode Power Supply compatible with mains input
19. sign is displayed However the current state is saved when the controller is shut down To store a preset follow these steps see Figure 27 gt From the main menu select STORE PRESET gt Turn the encoder wheel to scroll through the user memories gt Press the OK key or the encoder wheel to select a user memory or ESC to abort If the controller displays OVERWRITE it means that a preset is already stored in the selected user memory v Press the OK key or the encoder wheel to validate or ESC to abort P If necessary enter a new preset name 16 characters max as follows a Turn the encoder wheel to select the first character b Press the encoder wheel to go to the next character c Repeat these steps until the new name has been entered n Pressing the encoder wheel from the 16 character makes the cursor return to the first character so that it is possible to apply the procedure a new time for possible corrections P Press the OK key to validate or ESC to abort The preset is stored and the main screen is displayed ENTER PRESET NAME ENTER PRESET NAME Hi s SEZS BA Hills MY SBPSO 6b STORE USER PRESET OUEFLUEITE His KI ENTER PRESET NAME 8 PRESET NAME Hits SES BA Figure 27 Storing a preset LAS UM EN 7 0 WWW L ACDUSTICS COM 31 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 5 6 DELETE PRESET A user preset contained in a user memory 1 10 can be deleted following these steps see Figure
20. signal running at Fs 48 kHz LAS UM EN 7 0 WWW L ACOUS TICS C OM 11 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 3 2 3 DSP architecture The proprietary algorithms allow optimum performance and protection of each individual transducer of the L ACOUSTICS systems for an even more natural transparent and realistic sound experience e The DSP engine is a 32 bit floating point DSP at 96 kHz sampling rate offering an enhanced dynamic range since it does not generate calculation clips like a fixed point DSP e A dedicated engineering approach combining IIR and FIR filters generates perfectly linearized phase curves and significantly improved impulse responses e The 2 x 4 matrix architecture offers flexibility for various system configurations e The L DRIVE transducer protection system offers advanced protection by monitoring both excursion and temperature of the transducer e With a complete factory preset library and the possibility of creating additional user presets the flash memory offers a quick access to all the usual L ACOUSTICS speaker system configurations refer to the LA PRESET GUIDE Ji pe RERE 1 i N ENT E H i ji Array Morphing multi band EQ m Array Morphing multi band EQ IN A IN B Array Morphing multi band EQ Array Morphing multi band EQ LL aas X M X X A X mm XM N I B ca
21. the figure on the right ay A soft start sequence will automatically be engaged when the SMPS returns to nominal state LAS UM EN 7 0 WWW L AGOUSTIGS GUM 42 Output channels Output channel temperature The fans associated to the heat sinks operate permanently but as long as the temperature remains below 40 C they run at their slowest speed and can hardly be heard The highest detected temperature controls the speed of the fans Above 40 C the speed is increased until it reaches its maximum value If a temperature of more than 85 C is detected at output channel x the signal delivered at this output channel is attenuated and the controller displays High Temperature see the figure on the right Hish Temrerature Chx Channel Attenuated If the temperature exceeds 96 C channel x is muted and the controller displays Over Temperature see the figure on the right Over Temperature Chx In both cases the protection will automatically be disengaged when the temperature Channel Muter returns to nominal state Output channel DC voltage The output channels are continuously monitored for sustained presence of DC voltage above a threshold of 3 V If a sporadic DC voltage is detected at output channel x this channel is muted and the controller displays DC see the figure on the right The channel will automatically be unmuted when returning to nominal state DC on Channel Channel Mutec If a persistent DC voltage is detec
22. 00 8 225 W leading to a total power of 4 x 225 900 W for the LAG According to Table 2 the LA8 power consumption is 1500 W the heat power produced is then 1500 900 600 W difference between power consumption and output power LAS UM EN 7 0 WWW L AGOUSTIGS GUM 16 4 4 Audio and network cabling 4 4 Connection panels The LA8 rear side features four connection panels see Figure 7 ANALOG for analog audio distribution AES EBU for digital audio distribution SPEAKER output and L NET for remote control with LA NETWORK MANAGER software Figure 7 LA8 rear connection panels 4 4 2 Analog audio cabling The analog XLR connectors on the LA8 are wired according to IEC 268 pin shield pin 2 signal pin 3 signal Two 3 point female XLR input connectors IN A and IN B are provided for the LA8 to receive two analog signals 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 In a daisy chain layout two 3 point male XLR connectors LINK A and LINK B feed the input signals to the next unit in the signal chain see Figure 8 Both LINK connectors are passively wired in parallel on channels A and B see Figure 9 The input impedance is high enough 22 kQ balanced to allow multiple parallel input connections analog audio source Figure 8 Daisy chaining analog audio LAS UM EN 7 0 LAS AMPLIFIED CONTROLLER USE
23. 50 60 Hz or 120 V 30 A 50 60 Hz Only connect the LA8JP Japan type to an AC power outlet rated 100 V 30 A 50 60 Hz or 200 V 15 A 50 60 Hz To plug the controller to a mains only use an outlet fitted with a pin tied to ground Do not defeat the ground pin of the outlet as it connects the controller to earth If the local mains does not conform to the power requirements or is unsure consult an electrician The following table gives the LA8 power data in nominal use 4 Q 1 8 of maximum output power see section 4 3 6 Table LA8 Power supply data in nominal use Voltage V Frequency Hz Current A 120 230 LA8 LA8US 50 60 21 1I 1500 100 200 LA8JP 50 60 25 13 1500 If the mains voltage value increases up to more than 142 V the amplified controller will automatically switch to the 230 or 200 V mode If the mains voltage value decreases down to less than 32 V the amplified controller will automatically switch to the 120 or 100 V mode 4 3 2 Three phase circuit Verify that each phase works in particular the neutral one Balance the loads between the three phases Never try to reproduce a 230 V circuit connecting an LA8 or LA8US to two live wires of a 120 V three phase circuit Never try to reproduce a 200 V circuit connecting an LA8 P to two live wires of a 100 V three phase circuit 4 3 3 Circuit breaker P Always interconnect a thermal circuit breaker between the controller and the mains
24. A preset can be loaded from the following menu pages Table 6 LOAD PST pages Page Memory range Contens LOAD PST USER 10 read and write User presets stored by the user refer to section 5 5 Factory preset library created by L ACOUSTICS and LOAD PST FACTORY 11 199 read only automatically installed during firmware update refer to the LA NETWORK MANAGER video tutorial To load a preset follow these steps see Figure 26 gt From the main menu select LOAD PST USER or LOAD PST FACTORY If the controller displays NO PRESETS AVAILABLE when you select LOAD PST USER it means that all user memories are empty Press the ESC key to abort END Else continue the procedure gt Turn the encoder wheel to scroll through the presets P Press the OK key or the encoder wheel to select a preset or ESC to abort The controller displays ARE YOU SURE P Press the OK key or the encoder wheel to validate or ESC to abort If the controller is not assigned to a group refer to section 5 8 or is connected to L NET refer to section 5 2 3 the preset is activated and the main screen is displayed If the controller displays CLEAR GROUP PARAM it means that it has been assigned to a group refer to section 5 8 but it is no longer connected to L NET refer to section 5 2 3 Press the OK key to clear the group parameters or press the ESC key to keep the group parameters active LOAD PRESET Ki all ki OK LORD PRESET ARE
25. COUSTIC S C OM 7 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 2 SYSTEM COMPONENTS The system approach developed by L ACOUSTICS consists in offering a global solution that guarantees the highest and most predictable level of performance at any step of loudspeaker system deployment modeling installation and operation A complete L ACOUSTICS system includes enclosures amplified controllers cables rigging system and software applications The main components of an L ACOUSTICS system that includes the LA8 are the following 2 1 Powering and driving system LA8 Amplified controller with DSP preset library and networking capabilities LA RAK Touring rack containing three LA8 for power audio and network distribution 2 2 Loudspeaker enclosures and cables Refer to the user manuals of the loudspeaker systems for detailed instructions about the enclosures and their connection to the LA amplified controllers 2 3 Rigging element Refer to the rigging manuals of the loudspeaker systems for detailed instructions about the rigging of the enclosures 24 Software application SOUNDVISION Proprietary acoustical and mechanical 3D modeling software LA NETWORK MANAGER Remote control and monitoring of amplified controllers nm Using L ACOUSTICS software Refer to the SOUNDVISION user manual and the LA NETWORK MANAGER tutorial LA NETWORK MANAGER Figure 1 Main components involved in loudspeaker system design and drive
26. F LF HF for 2 way active loudspeakers and on the right a preset composed of one 4 channel set SR SB SB SB for 4 subwoofers in cardioid configuration J4GBHIH dE LHGHIH amp dB L HA if MI L H Two 2 channel sets One d channel set LF HF LF HF SR SB SB SB Figure 29 Channel sets To set the preset parameters follow these steps see Figure 30 From the main menu select PRESET PARAMETERS Turn the encoder wheel to select a preset parameter Press and hold the chosen output key or any output key of a channel set and turn the encoder wheel to select a value or press ESC to abort Release the key Repeat the procedure for each value to be set Press ESC to return to the main menu vvv www LAS UM EN 7 O WWW L AGUOUSTICGS CGUM 32 If necessary all preset parameters including the preset name can be reset to default values following these steps see Figure 30 B Turn the encoder wheel to select RESET PRESET P Press the OK key or the encoder wheel two times or ESC to abort hold Er FPULARITY T x same sequence as for GAIN FINPUT SELECTION H PRESET ha ARE YOU SURE OUTPUTS MUTED Figure 30 Setting the preset parameters nm Value ranges Gain values are adjustable between 60 dB and 15 dB Delay values are adjustable from 0 to 680 ms 65280 samples 233 5 m 765 9 ft at 20 C Refer to section 5 11 2 for delay unit setting Value setting res
27. PUT MODE LINPUT MODE IN AN FBACK LOCK 44ki HES EBU LOCK 44k 1 AES EBU LOCK 44k1 Figure 35 Reactivating the AES EBU IN input 5 9 2 FALLBACK MODE An automatic fallback option can be enabled or disabled When enabled and when the AES EBU input mode is selected the amplified controller will automatically switch from digital to analog input in case of digital signal failure no clock loss of lock CRC error bipolar encoding error data slip This option prevents sound cut After the digital signal has returned to normal state reverting to digital input is not automatic and must be done manually by the user This can be done simultaneously for all concerned amplified controllers from LA NETWORK MANAGER software Precautions for using the automatic fallback option Before enabling the automatic fallback option some precautions have to be taken in order to avoid sound cut or level differences in case of switch from digital to analog input e The ANALOG inputs must be connected to an audio source playing the same program as the digital audio source connected to the AES EBU input e The level of the digital audio source connected to the AES EBU input must be aligned to the level of the analog audio source using the AES EBU GAIN control see section 5 9 3 Two FALLBACK MODE settings are available as described in the following table Table 7 FALLBACK MODE settings Automatic fallback option disabled The sound will be cut off i
28. R MANUAL VERSION 7 0 Input A Input B Link A In A Link B In B Figure 9 Analog input panel wiring nm Balanced cables Symmetrical balanced shielded cables are highly recommended as balanced signals are less sensitive to AC hum and radio interference Unbalanced lines may add noise especially over long cable runs 4 4 3 AES EBU digital audio cabling Both AES EBU XLR connectors on the LA8 are transformer balanced and wired according to IEC 268 The 3 point female XLR input connector IN is provided for the amplifier to receive one AES EBU AES3 or coaxial S PDIF IEC 60958 Type II signal In a daisy chain layout the 3 point male XLR connector LINK feeds the input signals to the next unit in the signal chain see Figure 10 The LINK connector is electronically buffered to allow daisy chaining any number of amplified controllers It also features a failsafe relay to ensure wiring continuity in case of amplified controller shutdown see Figure nm Cables for AES EBU digital audio The quality required for the XLR cables will depend on the cable length and the signal sampling frequency As a starting point a standard balanced microphone cable of maximum length of 50 m 150 ft can be used to transport a signal of maximum sampling frequency of 48 kHz Higher sampling frequencies may require reducing the cable length since the signal attenuation in cables increases with the sampling frequency As AES EBU certified cables p
29. and prevent unintentional operation press and hold the IN A and IN B keys simultaneously until Display Locked is displayed on the LCD screen P To unlock press and hold the IN A and IN B keys simultaneously until Display Unlocked is displayed on the LCD screen Mute control P Tap one of the four output keys holding it less than 0 3 sec to mute or unmute the corresponding output channel The MUTE OUT page is displayed for 2 seconds The quick access mute control is available at all times and positions in the menu tree The key is lit in blue when the MUTE OUT i corresponding output channel is muted and not lit when OFF ON ON unmuted i Outputs are muted in all factory presets The gain can be set before unmuting Gain control Gain can be controlled in quick access mode simultaneously for all output channels fed by the same input following these steps P From the main screen press and hold the chosen output key The LCD displays the gain values of all channels having the same routing as the selected channel P Turn the encoder wheel to set the gain values and simply release the key to return to the main screen Figure 19 Setting the OUT 3 gain LAS UM EN 7 0 WWW L ACDOLSTICS GOM 25 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 Additional information about gain control Quick access gain control is only available from the main screen Gain values can be set at 0 1 dB resolution B simply turn the encod
30. as a format supported by the controller s digital audio card and no loss or fault is being detected during data transfer If these conditions are not fulfilled the status will turn to LOCK WARN or UNLOCK The LOCK WARN status see Figure 33 left indicates that the incoming digital signal has a sampling frequency out of the nominal range that does not lead to sound cut On the contrary the UNLOCK status see Figure 33 right indicates a faulty digital signal leading to sound cut INPUT MODE INPUT MODE e2 HES EBU LULK WHRN HES EBU UNLOCK Figure 33 LOCK WARN and UNLOCK statuses Sound cut can be avoided using the FALLBACK MODE on the AES EBU IN input and a backup audio source connected to the ANALOG inputs refer to section 5 9 2 In case of UNLOCK status the ANALOG input will automatically be selected leading to one of the screens of Figure 34 AN FBACK indicates that the amplified controller has switched to analog fallback The text displayed on the right UNLOCK LOCK WARN or LOCK 44k1 informs the user about the status of the AES EBU audio source LIMPFUTI MODE Na LINPUT MODE e3 LINPUT MODE e HN FBEHCK HH FBERHCK LOCK WARN HH FERCK LOCK 44k1 Figure 34 FALLBACK statuses LAS UM EN 7 O WWW L ACOUS TICS C OM 35 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 When the LOCK status has been recovered the user can manually reactivate the AES EBU input applying the sequence described in Figure 35 LINPUT MODE c3 IN
31. dent of the input sampling frequency Sampling frequency 96 kHz SRC referenced to the amplified controller internal clock Sample Rate Word length 24 bits Converter Dynamic range 140 dB SRC Distortion THD N 20 dBfs Bandpass ripple 0 05 dB 20 Hz 40 kHz 96 kHz no clock Switchover conditions oo AES EBU to CRC error ANALOG bipolar encoding error or data slip fallback Constant delay yes upon user selection independent of input Fs Constant level yes upon user setting of AES EBU in gain independent of input Fs Revert to AES EBU manual user selection PHYSICAL DATA Dimensions H x W x D 88 2U x 483 x 420 mm 3 5 2U x 19 x 16 5 in 433 mm 17 in 76 mm 3 in 483 mm 19 in 88 mm 3 5 in 420 mm 16 5 in 406 mm 16 in 390 mm 15 4 in 76 mm 3 in 7 6 mm 0 3 in 465 mm 18 3 in Weight 12 2 kg 26 9 Ib Finish black and anthracite gray LAS UM EN 7 0 WWW L ACOUSTICS COM 46 Document reference LA8 UM EN 7 0 Distribution date February 18 2014 2014 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 WWW L ACOUSTICS COM
32. duct near any heat source such as radiators or other devices Water and moisture To prevent fire or shock hazard do not expose the product to rain or moisture Do not use the product near water Do not operate the product while wet Interference with external objects and or liquids Never push objects of any kind into the product through openings as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock Never spill liquid of any kind on the product Cleaning Unplug the product from the mains before cleaning Do not use liquid or aerosol cleaners Clean only with dry cloth Mounting instructions Do not place the product on an unstable cart stand tripod bracket or table The product may fall and be seriously damaged and may cause serious human injury Any mounting of the product should follow the manufacturer s instructions given in this manual and should use accessories recommended by the manufacturer Conditions which require immediate service Refer all servicing to qualified service personnel Servicing is required when the product has been damaged in any way such as e Power supply cord or plug is damaged e Liquid has been spilled or an object has fallen into the product e The product has been exposed to rain or moisture e The product was dropped or the housing is damaged e The product does not operate normally Servicing and replacement parts Do not attempt to service th
33. e possible by the integration of the L NET Ethernet based network Thanks to its high speed data transfer protocol of 100 Mbit sec up to 253 units LA4 and LA8 can be controlled and monitored in real time from LA NETWORK MANAGER software Multiple network topologies such as daisy chain star and hybrid are quickly and easily configurable for full flexibility in the required system architecture The computer running LA NETWORK MANAGER and the units are connected to each other using industry standard CAT5e U FTP cables or higher category fitted with RJ45 connectors Each amplified controller connects to the network via the I O Ethernet sockets located on its rear panel nm Operating instructions Refer to the LA NETWORK MANAGER video tutorial for detailed operating instructions LAB UM EN 7 0 WwWwW L ACDUSTICS COM 13 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 4 INSTALLATION 4 1 Mounting The LA8 is two rack units high 2U and can be mounted in an ElA standard 19 rack see Figure 5 The four points on the front panel are for rack mounting Use four screws and washers to mount the controller to the rack front rails 433 mm 17 in 76 mm 3 in 483 mm 19 in m ir 88 mm 3 5 in 406 mm 16 in 390 mm 15 4 in 420 mm 16 5 in 76 mm 3 in 7 6 mm 0 3 in 465 mm 18 3 in Figure 5 LA8 dimensions There is a risk of damaging the controllers during transport During transport
34. ected to support a wide range of input formats 16 24 bits 44 1 192 kHz It converts any of them to the 24 bits 96 kHz internal format used by the amplified controller The SRC is a high quality hardware component 140 dB dynamic range THD N lt 120 dBfs strong input jitter attenuation and provides constant propagation delay regardless of the input sampling frequency There is no external synchronization mode The amplified controller s clock always runs using its high precision internal quartz at 96 kHz It ensures low jitter and high audio quality while preventing phase shift as required for line source systems nm Digital domain benefits Keeping the signal in the digital domain using the LA AES3 board will provide the following benefits with any digital mixing desk or any audio network compared to the analog signal distribution e Better audio quality by removing one D A A D cycle e Better dynamics thanks to the digital links immunity to ground loops e Optimized level chain by removing the risk of level misalignment between console and amplified controllers e Possibility to reduce the amplified controller propagation delay by 0 5 ms e Digital signal refreshed at each amplified controller in a daisy chain e Improved maximum cable length The LA AES3 has been tested with up to 305 m 1000 ft of 3 models of AES EBU rated cables Belden 1696A Klotz Cables OT234H and Sommer Cable SC BINARY 234 single cuts digital source
35. ections from 5 11 1 to 5 11 4 4METWURK HUURESS NETWORK ADDRESS THE TW 122 100 1 119 Loca kOe 1242S 192 1 RK ADDRESS SE l i DELAY UNIT z DELAY UNIT DELAY UNIT mz METERS METERS FSLREEN LUNIRHS 7 SCREEN CONTRAST TSCREEN CONTRAST 7 G r 1587 gt SHA TRESET TO FACTORY 7 RESET AMF TO FACTORY DEFAULT SETTINGS ARE YOU SURE Figure 39 OPTIONS menu page LAS UM EN 7 O WWW L ACOUS TICS C OM 39 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 5 11 1 NETWORK ADDRESS Remote control of amplified controllers requires setting up a private local area Ethernet network to interconnect up to 253 units with a single control computer and possible additional devices such as Ethernet switches It is called L NET and uses a proprietary communication protocol based on TCP IPv4 called L COM The IP addresses on the units are class C addresses and must be set manually The default subnet for L NET is 192 168 1 0 IP address setting Each unit must be given an IP address that is not already in use by another device on the network For practical reasons it is suggested to start numbering the units at 192 168 1 1 and then 192 168 1 2 192 168 1 3 etc and manually set the control computer on 192 168 1 254 nm An IP address is a unique identifier for a network device on a given IP network In IPv4 networking it is made of 4 bytes In class C private local area IP subnets the three first bytes are the netwo
36. er wheel or dB resolution B simultaneously press and turn the encoder wheel Examples of output channels routed to the same input see Figure 20 e Pressing OUTI will select OUTI OUT3 and OUTA containing A e Pressing OUT2 will select OUT2 OUT3 and OUT4 containing B FINPUT SEE HI OH ua H HE H E e Pressing OUT3 or OUT4 will select all channels containing A and B Individual gain settings are available from the PRESET PARAMETERS menu see section 5 7 Figure 20 Multiple routings Identification If the controller is online with LA NETWORK MANAGER it can be identified among other units in the workspace refer to the LA NETWORK MANAGER video tutorial P Press and hold the encoder wheel from the main screen to launch the Identification function The controller flashes in yellow in LA NETWORK MANAGER While pressing the L NET LED and the output keys flash The controller also displays IDENTIFICATION and the IP address of the unit see Figure 21 Figure 21 Launching the Identification function LAS UM_EN_7 0 WWW L AGUOUSTICGS C OM 26 Input level input selection input mode and group information P Press and hold the ESC or OK key from the main screen The LED meter and the top line of the LCD screen display information about input channek IN A and IN B respectively from left to right see Figure 22 The bottom line of the LCD screen indicates the group assignation of output channels OUT I OUT 2
37. follow these steps see Figure 23 P Press and release the encoder wheel gt Turn the encoder wheel clockwise or counterclockwise to scroll through the page names gt Press the OK key or the encoder wheel to select a page or press the ESC key to return to the main screen n On the LCD screen two types of arrow cursors indicate how to navigate through the menus see Figure 23 e Position cursors on the left LALUHU PST USER 4 Start of a menu Other functionalities can be displayed turning the LOAD FST FACTORY encoder wheel clockwise ASA HG N TSTORE PRESET t Middle of a menu Other functionalities can be displayed turning the DELETE PRESET encoder wheel clockwise or counterclockwise ionaliti PRESET PARAMETERS T End of a menu Other functionalities can be displayed turning the CLEAR GRP PARAMS encoder wheel counterclockwise INPUT SETTINGS Selection cursors on the right MONITORING amp INFO Another menu level or function can be accessed pressing the OK key OP TIONS or the encoder wheel Press the ESC key to return to the previous menu No additional menu level or function exist Figure 23 Main menu Turn the encoder wheel to access another menu or press the ESC key to return to the previous menu LAS UM EN 7 0 WWW L AGOUSTIGS GUM 28 5 3 3 Access rights PIN code The functionalities indicated in the following table can be locked or protected by a 4 digit PIN code defined from
38. ge wiring is quite often required to connect the LA8US so as to meet the 30 A specification If the power plug does not match the local power outlet it can be cut off and wired to a suitable plug refer to the LA8 maintenance manual level I 4 3 6 Power consumption The LA8 power requirements depend on the load impedance and the signal level as indicated in the following table Table 2 LA8 mains input power and current draw Maximum output power Mains input power and current draw Number of Power per 1 3 sp 1 8 SP 40 4 J 1800 Ww 22 A 3100W ITA 1500 W 05A 0 1A 80 4 J I1I00W I5 A 1950 W IOA 1300 W 115 W 12 W The current values are given for a mains rated at 230 V Multiply by 2 for 120 V 1 15 for 200 V and 2 3 for 100 V If the voltage outsides a plus or minus 10 96 range the maximum power is no longer guaranteed Output power references A third of the maximum output power corresponds to the worst case scenario of a program source using highly compressed music or pink noise with amplifier driven to clip level An eighth of the maximum output power corresponds to a loud music program with a small dynamic range and 9 dB of headroom IEC standard power rating 4 3 7 Example of heat calculation Connect a 4 Q load to each output channel of the LA8 each channel can now deliver a power of up to 1800 W Consider a standard use at 1 8 of full power 9 dB headroom the power delivered per channel is then 18
39. gh a shutdown sequence coming with Waiting SMPS displayed on the LCD screen and the four LOAD LED lit until complete shutdown power switch down Figure 14 Shutdown sequence nm Power loss If the power has been lost the controller will shut down but all parameters will be restored to same state as before shutting down when the controller switches on again Disconnection from mains The On Off switch does not disconnect the amplified controller from mains i Standby mode To reduce the electrical consumption and lock the front panel interface the controller can be put in standby mode from LA NETWORK MANAGER refer to the LA NETWORK MANAGER video tutorial Standby Mode will be displayed on the LCD screen while the controller is in standby mode lt is possible to cancel the standby mode from LA NETWORK MANAGER or from the LA8 front panel interface BP push and hold the encoder wheel for one second LAB UM EN 7 0 WWW L ACOUSTICS COM 22 5 2 Display 5 2 1 Main screen Once the start up sequence has fully cycled refer to section 5 1 the LCD displays the main screen I 2 3 4 Figure 15 Main screen I Preset memory number to 255 Memory space containing the current preset The preset can be a user preset or come from an on board preset library refer to section 5 3 3 2 Preset name Copied from a preset library or entered by the user if prior stored as a user preset 3 Last number in the IP addre
40. green LOAD LED is lit when a load is connected and when the output module delivers a minimum of 0 8 A SIGNAL The green SIGNAL LED is lit when a signal is detected at the corresponding output of the amplified controller and when the output voltage reaches 100 mV dB The green 25 dB 10 dB and 5 dB LED are lit when the output voltage reaches respectively 25 dB 10 dB and 5 dB below the maximum level CLIP The red CLIP LED is lit when the output voltage reaches the maximum level 5 2 3 L NET LED The L NET LED is lit in green see Figure 17 when the LA8 is part of a network of controllers and driven by LA NETWORK MANAGER software refer to the LA NETWORK MANAGER video tutorial i Front panel commands The front panel commands remain accessible if the L NET LED is lit Figure 7 L NET LED lit in green i The L NET LED can also be lit in red or orange e Red to indicate that a protection system is activated refer to APPENDIX A PROTECTION SYSTEMS e Orange during the start up sequence refer to section 5 1 to test the two possible colors at once green red orange LAS UM EN 7 0 WWW L ACOUSTICS COM 24 5 3 User interface 5 3 1 Quick access The LA8 offers quick access functions for control front panel locking mute and gain identification and monitoring display of input level input selection input mode and group information Lock Unlock control P To lock the front panel even the mute function
41. hree phase circuit Verify that each phase works in particular the neutral one Balance the loads between the three phases Never try to reproduce a 230 V circuit connecting an LA8 or an LA8US to two live wires of a 120 V three phase circuit Never try to reproduce a 200 V circuit connecting an LA8JP to two live wires of a 100 V three phase circuit Electrical generator You must power on the generator before powering on the amplified controllers Verify that the amplified controllers are turned off before powering on the generator Thermal circuit breaker Always interconnect a thermal circuit breaker between the product and the mains The circuit breaker current rating depends on the mains voltage rating as follows 16 A for 230 V or 30 A for 120 V LA8 or LA8US 15 A for 200 V or 30 A for 100 V LA8JP Grounding To plug the controller to mains only use an outlet fitted with a pin tied to ground Do not defeat the ground pin of the outlet as it connects the controller to earth If the local outlet is obsolete consult an electrician The product is fitted with a grounding type plug Do not defeat the ground wire connecting the plug s female contact to the product s chassis Plug replacement If the AC plug on the power supply cord of this product does not match the local outlet it must be replaced by an appropriate one This operation should only be performed by qualified service personnel Verify that the cut off plug is withdra
42. ial 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 OBLIGATION This symbol notifies the user about instructions that must be strictly followed to ensure proper installation or operation of the product EQUIPMENT This symbol indicates the equipment tools and spare parts required to perform a procedure m INFORMATION This symbol notifies the user about complementary information or optional instructions LAS UM EN 7 0 WWW L AGOUSTIOGS GUM 4 WELCOME TO L ACOUSTICS Thank you for choosing the L ACOUSTICS LA8 amplified controller This document contains essential information on using the product properly Carefully read this document in order to become familiar with the product 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 the L ACOUSTICS web site on a regular basis to download the latest document and software updates www l acoustics com CONTENTS I PRESENTATION 7 2 SYSTEM COMPONENTS 8 2 1 Pe werine aid GPIVING stele EE EE EE EE Lm 8 2 2 Loudspeaker enclosures and Cables iie EER NAAAGNAS AINA NA Ge UU Sane CS Ge GE 8 2 3 PRINS eleme EE N N IE N EE tiem an ME OE OO OE IE 8 2 4 a a SD elle AA EE 8 3 LA8 AMPLIFIED CONTROLLER 9 3 1 Paa EE AE EO AO OR
43. is product as removing covers may expose to dangerous voltage or other hazards The use of unauthorized replacement parts may result in injury and or damage through fire electric shock or other electricity related hazards All service and repair work must be carried out by an L ACOUSTICS authorized dealer 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 this manual LAB UM EN 7 0 WWwW L ACDUSTICS COM 3 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 SYMBOLS INDICATED ON THE PRODUCT The product is potentially life threatening if open Never attempt to remove the back cover CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN The lightning flashes symbols next to the SpeakON and CA COM connectors indicate that the product can generate high output voltages that are potentially life threatening Always use ready made leads to connect the product to speakers Never touch any exposed speaker wires while the product is operating without first disconnecting the wires from the product SYMBOLS The following symbols are used in this document DANGER 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 Anon HAZARD This symbol indicates a potent
44. log input ports is ESD protected and equipped with one XLR3 female connector The analog input panel also features two XLR link ports passively connected to the input ports It allows transmitting the input signals to daisy chained amplified controllers Each of the analog link ports is ESD protected and equipped with one XLR3 male connector To be processed by the DSP the analog signal needs to be converted into a digital signal For this purpose the LA8 amplified controller is fitted with two cascaded 24 bit A D converters with a sampling rate of 96 kHz allowing an encoding dynamic range of 30 dB LAB UM EN 7 0 WWW L ACOUSTICS COM 10 3 2 2 AES EBU digital input The LA8 can be fed with one AES EBU digital audio signal carrying two audio channels thanks to the LA AES3 card The card features an XLR input port see Figure 2 an active XLR link port and a Sample Rate Converter SRC The AES EBU input port is ESD protected and equipped with one XLR3 female connector transformer balanced It allows the LA8 to receive two digital audio channels coming from a digital mixing desk or a digital audio network bridge compliant with the AES EBU AES3 or coaxial S PDIF IEC 60958 Type Il digital audio standards The AES EBU link port is ESD protected and equipped with one XLR3 male connector transformer balanced It allows transmitting the input signal to daisy chained amplified controllers The SRC embedded in the LA AES3 board has been sel
45. n be set from LA NETWORK MANAGER only 3 can be set from LA NETWORK MANAGER and the LAB interface N L locked s can be managed by groups L ACOUSTICS parameters IIR filters Bessel BTW LR Over excursion Thermal protection protection FIR filters zero phase shift Figure 4 Audio path parameters LAS UM EN 7 0 WWW L AGOUSTIGS GUM 12 3 2 4 Amplifier section and power supply The LA8 amplifier section uses a Class D technology supporting the very wide dynamic range found in live audio productions The 4 channels can deliver up to 4 x 1800 watt into 4 or 2 7 ohm yielding perfect power matching to each individual L ACOUSTICS loudspeaker system The auto sensing SMPS Switched Mode Power Supply offers better stability by associating two symmetrical power supplies 3 2 5 Speaker output The LA8 features two 4 point SpeakON and one 8 point CA COM connector for loudspeaker outputs 3 3 Monitoring and control 3 3 1 User interface The front panel user interface provides see Figure 2 e Real time monitoring functionalities via the LED display signals presence and level and the LCD screen system parameters e Instant access to navigation and parameters control using the encoder wheel and the six keys for the 2 input and 4 output channels nm Operating instructions Refer to section 5 for detailed operating instructions 3 3 2 L NET and remote control network The design of complex systems is mad
46. n case of digital signal failure but it will automatically be recovered when the signal has returned to normal state Automatic fallback option enabled The ANALOG inputs will automatically be selected in case of digital signal failure on the AES EBU inputs Revert to AES EBU is not automatic and must be done manually by the user To select the fallback mode follow these steps see Figure 36 P From the main menu select INPUT SETTINGS and press the OK key or the encoder wheel or ESC to abort Turn the encoder wheel to select FALLBACK MODE Press the OK key or the encoder wheel to enter the page or ESC to abort Turn the encoder wheel to select the chosen setting vv w v Press the OK key or the encoder wheel to validate the setting or ESC to abort pum y Y TFHLLBEHUCK MODE e FALLBACK MODE TFHLLERCK MODE OFF OFF ON Figure 36 Selecting the fallback mode i Invalid audio validity bit A validity bit at non audio value will not trigger the automatic fallback Instead the signal will be muted LAS UM EN 7 0 WWW L AGOUSTIOGS GUM 36 5 9 3 AES EBU GAIN The AES EBU input ports include a gain module common to all ports which can be set from 12 dB to 12 dB by 0 1 dB steps It must be used when the fallback mode is enabled a digital audio source is connected to AES EBU input and an analog audio source is connected to the ANALOG inputs The AES EBU GAIN allows aligning the digital audio source level to the
47. of each individual transducer LAS UM EN 7 0 WWW L ACDOLSTICS GOM 43 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 APPENDIX B APPROVALS EC declaration of conformity L ACOUSTICS 13 rue Levacher Cintrat Parc de la Fontaine de Jouvence 91462 Marcoussis Cedex France States that the following product Established at Marcoussis France LA8 amplified controller October 22 2009 Is in conformity with the provisions of 2006 95 EC Low Voltage Directive 2004 108 EC Electro Magnetic Compatibility Directive Applied rules and standards Christophe PIGNON EN60065 Safety requirements for audio video and similar Research amp Development Director electronic apparatus EN55103 1 Electromagnetic Interference Emission EN55103 2 Electromagnetic Susceptibility Immunity Additional approvals The LA8 amplified controller has been CB CCC and cTUVus certified It also complies with EMC and RoHS directives The main standards tested were Safety requirements IEC 60065 2001 7 Edition Al 2005 EN 60065 2002 Al 2006 09 09 2008 UL 60065 2003 RI 1 06 CSA C22 2 60065 2003 A1 06 K60065 GB8898 2001 CE EN 55103 1 1996 E1 E5 and EN 55103 2 1996 El E5 FCC FCC 47 CFR Ch I Part 15 Korea EN 55013 2001 Al 2003 A2 2006 K 00013 2006 EN 55020 2002 AI 2003 K 00020 2003 China GB17625 1 2003 and GB 1 3837 2003 The original certificates are available upon request RoHS Direc
48. olution P Turnthe encoder wheel to obtain fine resolution last digit b Press and turn the encoder wheel to obtain coarse resolution second to last digit Total delay m The total delay is the sum of the group delays set in LA NETWORK MANAGER and the output channel delay The total delay cannot exceed 680 ms nm Preset parameters saving Preset parameter modifications apply immediately but are not automatically saved to the current preset they will be lost if the preset is reloaded Use the STORE PRESET function to save the current preset along with settings to a user memory refer to section 5 5 LAS UM EN 7 0 WWW L ACDOLSTICS GOM 33 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 5 8 CLEAR GRP PARAMS The group parameters name gain delay and contour EQ defined in LA NETWORK MANAGER refer to the LA NETWORK MANAGER video tutorial can be cleared n Group and preset parameters The group parameters apply to a set of amplified controllers that are part of a group while the preset parameters apply to a single amplified controller refer to section 5 7 The CLEAR GRP PARAMS function only clears the group parameters and does not clear the preset parameters To clear the group parameters follow these steps see Figure 31 gt From the main menu select CLEAR GRP PARAMS gt Press the OK key or the encoder wheel or ESC to abort If the controller displays L NET ACTIVE CANNOT CLEAR it means that the operation
49. on 5 3 1 LAS UM EN 7 0 WWW L AGOUSTIGS GUM 34 5 9 INPUT SETTINGS 5 9 1 INPUT MODE This function allows selecting the physical input connector according to the audio source feeding the amplified controller e An analog audio source connects to the IN A and or IN B inputs of the ANALOG panel see Figure 7 In this case activate the analog inputs selecting the ANALOG input mode e Adigital audio source connects to the AES EBU IN input of the AES EBU panel see Figure 7 In this case activate the digital inputs selecting the AES EBU input mode To select the input mode follow these steps see Figure 32 gt From the main menu select INPUT SETTINGS and press the OK key or the encoder wheel gt Turn the encoder wheel to select INPUT MODE and press the OK key or the encoder wheel gt Turn the encoder wheel to select ANALOG or AES EBU gt Press the OK key or the encoder wheel to validate the setting or ESC to abort D e tINPUT MODE a INFUT MODE 1NFUT MODE e ANALOG gt ANALOG lt HES EBU LOCK 44k1 Figure 32 Selecting the input mode In Figure 32 the AES EBU input mode has been enabled LOCK 44kI is a status message indicating that the AES EBU input mode is active and that the digital audio source provides signals of sampling frequency of 44 1 kHz The LOCK status is obtained under the following conditions a digital audio source is connected to the AES EBU input the signal delivered by the source h
50. or networking up to 253 LA4 and LAB units remote monitored by LA NETWORK MANAGER software Windows compatible And the specific features of each unit are the following e The LA4 delivers up to 4 x 1000 watt into 4 ohm e The LA8 delivers up to 4 x 1800 watt into 4 or 2 7 ohm e An AES EBU input card is integrated to the LAG for digital audio implementation This feature is available as an option on the LA4 e The LA8 includes all current factory presets while the LA4 only includes presets of LA4 type e The output connectors are Speak ON for the LA4 and CA COM SpeakON for the LAS The unique ensemble of on board features and the addition of peripherals are all offered in a secured and standardized environment This approach simplifies system setting and operation with the benefit of superior and predictable audio results across the entire product range Driving four amplified output channels through a DSP offers a wide range of options when it comes to sound system configuration The LA4 and LA8 on board preset libraries allow the sound engineer a high degree of flexibility in choosing the enclosure models and the system configuration for a specified application The factory preset libraries are derived from 6 basic system templates e 3 way active mono quad amplified e cardioid subwoofer mono e 2 way active stereo e passive stereo e hybrid active subwoofer mono e hybrid passive subwoofer stereo LAS UM EN 7 0 WWW L A
51. or while on tour it is essential that the controllers are rear supported in addition to the front panel mounting Use the rear rack support brackets provided with the controller as shown in Figure 6 Any mechanical damage to the controllers used in portable applications without rear support will not be covered by warranty 400 mm 15 7 in Max 486 mm 19 1 in Figure 6 LA8 with rear rack support brackets LA RAK touring rack The L ACOUSTICS LA RAK touring rack is available for three LA8 with all power and signal connection facilities refer to the LA RAK user manual or spec sheets LAS UM EN 7 0 WWW L AGOUSTIGS GUM 14 4 2 Cooling To maintain a low and even operating temperature the LA8 contains two fans providing front to rear airflow A Instructions for proper ventilation Do not block the front and rear ventilation grills on a controller Ensure that the front filter is clean and dust free If the controller is rack mounted e Do not block the ventilation grills with front or back panels or doors If not possible use a forced ventilation system and verify that the open area at the back is at least of 140 cm per controller e When stacking more than one controller in a rack mount them directly on top of each other or close any open space in the rack with blank panels 4 3 Connecting to AC mains 4 3 AC mains specifications Only connect the LA8 CE type or LA8US US type to an AC power outlet rated 230 V 16 A
52. r 4 4 5 PINE PCa eo AAR EE RR AA AA N E E E T E AA 5 OPERATION 5 1 Powering on powering off standby mode iese ee ee ee EA ee AA ee ee de ee GANG AR ee dd Aa tee de ee AR ee ee ee 5 2 Re AE 5 2 1 Mil TES ER LETT OOo TE 5 2 2 LED AO EO RE ER EER E 5 2 3 LE T LED paanan erm 5 3 GALE RERO TO AA m 5 3 1 a SC AA eae 5 3 2 AA 5 3 3 ACCESS PICO ER EE RE RE OE o N 5 4 Ze sis ME AA TOE ER OE EE AT EE EE OE N N ie ER EE EE RE OE EO EE EE OR EE ee c DELETE PRESET ce ere ct ee ee Se ng ede ie ee oe ete Ge it seve eed see oe os Sept ee Gee ie ee Ee Ee AA S PRESET PARAMETERS oe oe ie Sa AN AA ee ee ee AA 50 CLEAR ORP PARADISE ee AT ee eel eS AA eee eee ee URINE 5 9 INE E SEI TING NE EG EE OE OE N pew EE N EE OE ROER 5 9 ly uS NND P p ee 5 9 2 Ed es 46b EO EE OE AA EL EE EE 5 9 3 les ede ER EO AO EE AE NE Salo MONITORING SINO ME EE EO EE EE OT OE RT ORE SPREFANPANG IE is ae ce gene esa NANANA NAA AA AA ee Blog DUCT TEE 6 ie E ee ee eee AA AA ee B03 RENEE OE OE NE N OE EE OE N N EE RE ER EE EE DH or PRESET LIBRAR In n de ee GE GA RO Re EG EO Ee EE GE SOS er pP icc EE E NE OE N OR AE EE HIERO Ue EE ER EE OE RE EA AA OE HEN MIE NEDYOR ADDRES RR EE OE OE EE EE N EE Ee IN EO GE GO OE RE EL EE EE EE EE NE EN Belles N oe dee ide EE EE EE ness 6 114 RESET TO
53. re monitoring of transformers and heat sinks inrush current limitation Circuits protection mains supply failure and over voltage detection output DC protection output over current protection Transducers protection L DRIVE thermal and over excursion protection Fans 2 fans temperature controlled speed 4 meters including Load Signal Level and Clip LED Indicators L NET presence LED 4 mute LED 2 x 4 point SpeakON OUT 1 2 and OUT3 4 a ENE sers x Hon CA COM OUTI to OUT4 L NET connectors 2 x Fast Ethernet RJ45 in out LAB UM EN 7 0 WwWwW L ACDUSTICS COM 45 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 ANALOG INPUT Connector Input 2 Neutrik female XLR3 IEC 268 ESD protected Link 2 Neutrik male XLR3 IEC 268 ESD protected ipus 22 kQ balanced impedance Max input level 22 dBu balanced THD 9 Latency 3 9 ms Digital A two cascaded 24 bit A D converters 130 dB dynamic range conversion DIGITAL INPUT Input Neutrik female XLR3 IEC 268 ESD protected Neutrik male XLR3 IEC 268 ESD protected electronically EDE ets xii buffered failsafe relay USB Mini B type female USB reserved for future applications Supported Standard AES EBU AES3 or coaxial S PDIF IEC 60958 Type Il input formats Sampling frequency Fs 44 1 48 64 88 2 96 128 176 4 or 192 kHz Word length 16 18 20 or 24 bits Input gain Adjustable from 12 dB to 12 dB by 0 1 dB steps Latency 3 84 ms upon user selection indepen
54. rk prefix and the last byte is the device identifier on the subnet Regarding device identifiers two numbers are reserved 0 for designating the subnet and 255 to communicate with all devices of the subnet aka the IP broadcast address To select the IP address of a controller follow these steps gt From the main menu select OPTIONS and press the OK key or the encoder wheel or ESC to abort P Press the OK key or the encoder wheel to enter the NETWORK ADDRESS page or ESC to abort gt Turn the encoder wheel to select a value for the last byte Value setting resolution gt Turn the encoder wheel to obtain a step resolution D Press and turn the encoder wheel to obtain a O step resolution P Press the OK key to validate the setting or ESC to abort For example in Figure 39 the IP address has been modified from 192 168 1 110 to 192 168 1 123 nm Subnet modification According to the network administration requirements the default subnet 192 168 1 0 can be modified entering new values for the three first bytes as follows P Long click on the key located just below the number to modify until it is selected gt Turn the encoder wheel to select a new value and press the OK key to validate P Repeat the procedure for all numbers to modify 5 11 2 DELAY UNIT Delay values can be displayed in ms milliseconds SAMPLES METERS or FEET The values in meters or feet are given for a temperature of 20 C To select the
55. rovide smaller attenuation length ratio it is highly recommended to use them in installations requiring long cable runs or high sampling frequency signals It is recommended to use single cuts of cable Using several pieces will reduce performances In case an amplified controller shutdowns the failsafe relay makes a passive connection between the AES EBU IN port and the LINK port to maintain continuity However the signal is no longer refreshed for the next amplified controller so that the input cable and the link cable must be considered as a unique input cable with regard to the maximum supported length In case of transmission losses try to reduce the sampling frequency of the digital audio source Moreover as a general rule avoid using sources rated beyond 96 kHz as the maximum possible cable length will be reduced while the additional information will anyway be cancelled by SRC to 96 kHz LAS UM EN 7 0 WWW L AGOUSTIGS GUM 18 LAS UM EN 7 0 AES EBU Rx amp SRC Figure 1 Digital input panel wiring LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 4 4 4 Loudspeaker cabling There is a risk of damaging the speakers The DO2W DOFILL and DOSUB PA COM cables are not compatible with the LAS All other L ACOUSTICS PA COM cables can be used Refer to the LA8 PACOM CABLES technical bulletin for more details Loudspeaker system connection Before connecting a loudspeaker system refer to the applicable user man
56. ss I to 254 Identifies the controller within the L NET network refer to section 5 2 3 4 Star sign Indicates that parameters have been modified after the preset was last stored refer to section 5 5 5 Output name and routing Label placed above each output key written in the xx x format where e The first two characters indicate the type of transducer section or enclosure to be connected to the output channel LF low frequency transducer section part of a 2 or 3 way loudspeaker enclosure MF mid frequency transducer section part of a 3 way loudspeaker enclosure HF high frequency transducer section part of a 2 or 3 way loudspeaker enclosure PA passive loudspeaker enclosure SB subwoofer enclosure installed with front face pointing towards the audience SR subwoofer enclosure installed with front face pointing towards the direction opposite from the audience part of a cardioid configuration e The last character indicates which input channel or input channel combination is selected to drive the output channel INA IN B sum of IN A and IN B A B difference between IN A and IN B A B WwW D gt LAS UM EN 7 0 WWW L ACOUS TICS C OM 23 LAS AMPLIFIED CONTROLLER USER MANUAL VERSION 7 0 5 2 2 LED meters Four LED meters are located on the front panel above the LCD screen see Figure 16 Figure 16 The four LED meters By default the LED meters monitor the state of the four output channels via six LED LOAD The
57. ted at output channel x this channel is disabled and the controller displays DC see the figure on the right DC on Channel After the issue has been solved the controller must be restarted manually to re Channel Disabled activate channel x Output channel current The output channels are continuously monitored for unexpected current values error If an external error is detected at output channel x typically due to a short circuit in a cable this channel is muted and the controller displays Error see the figure on Error on Channel the right Channel Mutec The channel will automatically be unmuted as soon as the issue is solved If an internal error is detected at output channel x typically due to a cross conduct in the power stage this channel is disabled and the controller displays Error see the E Ci R Mas as ER ala lS x Ngure on Ee Tene Channel Disabled For safety reasons all other channels are also disabled The controller must be sent to an L ACOUSTICS representative for maintenance Speakers The L DRIVE transducer protection system provides a dual analysis of both signal intensity and voltage in real time and RMS Under extreme conditions when component membranes reach the over excursion zone or if the coil ensemble temperature reaches a critical point L DRIVE is activated and acts as a power regulator As a result the amount of power delivered at any channel is adjusted to the dynamic and thermal capacity
58. tive EU 2002 95 EC LAS UM EN 7 0 WWW L ACOUSTICS COM 4 4 APPENDIX C SPECIFICATIONS GENERAL Output power 8 Q 4x 1100 W RMS 4 x 1300 W peak EIA 196 THD I kHz all channels driven 4 or 2 7 4x 1800 W RMS 4 x 2500 W peak Max output voltage 150 V Peak voltage no load Circuitry Class D Digital Signal Processor DSP SHARC 32 bit floating point 96 kHz sampling rate Frequency range 20 Hz 20 kHz 0 15 dB at 8 O Distortion THD N lt 0 05 96 20 Hz 10 kHz 8 Q I dB below rated power Output dynamic range 107 dB 20 Hz 20 kHz 8 Q A weighted Amplification gain 32 dB Noise level 67 dBV 20 Hz 20 kHz 8 Q A weighted Channel separation gt 85 dB at kHz Damping factor gt 600 8 Q kHz and below Maximum output power Mains input power and current draw Nb of driven BONN 1 3 Output 8 Output Mains input power poe channels per Mak 5 dB ba 9 dB EE diy channel and current draw all channels driven 40 I800W 22A 3100W II A 1500W 0 5A lt 0 1A 8Q II100W I5A 1950W 10A 1300W II5SW 12W Current values given for a mains rated at 230 V Multiply by 2 for 120 V 1 15 for 200 V and 2 3 for 100 V If the voltage outsides a plus or minus 10 96 range the maximum power is no longer guaranteed Mains ratings LA8 amp LA8US 120 230 V AC 10 96 50 60 Hz LA8JP 100 200 V AC 10 50 60 Hz Operating temiperat re Room temperature from 0 C to 50 C Inside controller from 0 C to 85 C temperatu
59. uals for further instructions Two 4 point SpeakON and one 8 point CA COM connectors on the rear panel of the LAS are for loudspeaker connection They are wired as follows see Figure 2 Left SpeakON connector Pin I ue indi Pin 2 CA COM connector Pim ut Ping Out Pin ut Pin Ft Figure 12 Output audio paths LAS UM EN 7 0 WWW L AGOUSTIGS GUM 20 The table below describes the maximum number of enclosures a single LA8 amplified controller can drive Table 3 Maximum number of enclosures per LA8 4 Passive I2XT Active I2XT 15XT HiQ ARCS WIDE FOCUS ARCS II KIVA KILO KUDO a amp MC MM ad Lo 2 08 NENNEN NENNEN INN Lo 2 o 08 ME ENE OE NEE Eo 8 08 Ah HO MEN EE GEN INNEN pa For passive loudspeakers the value corresponds to the number of enclosures in parallel on the output For active loudspeakers the value corresponds to the number of sections in parallel on the output 4 4 5 L NET cabling The LA8 can be remote controlled over an Ethernet network called L NET using LA NETWORK MANAGER software refer to the LA NETWORK MANAGER video tutorial To connect the LA8 to L NET use the Ethernet RJ45 connectors on the LA8 rear panel see Figure 7 L NET cables specifications Connect the computer and the amplified controllers to the L NET network using straight through Ethernet cables of CAT5e U FTP category or higher and of 100 m 328 ft maximum length
60. wn from use as it can cause severe electrical shock if connected to an AC outlet LAS UM EN 7 0 WWW L AGOUSTIGS GUM 2 20 21 22 23 24 25 26 Lightning storm During lightning storms disconnect the product from the mains Switching the product off does not disconnect it from the mains To do this remove the plug from the mains outlet Interconnections When connecting the product to other equipment mute all output channels Carefully read the user manual of the other equipment and follow the instructions when making the connections Do not connect a speaker output in parallel or series with any other amplifier output Do not connect the speaker outputs to any other voltage source such as a battery mains source or power supply regardless of whether the product is turned on or off Over power risks The product is very powerful and can be potentially dangerous to both loudspeakers and humans alike Even reducing the gain it is still possible to reach very high output power if the input signal level is high enough Operating temperature The product operates at a room temperature between 0 C and 50 C Ventilation Openings in the product chassis are for ventilation They prevent the product from overheating and thus ensure reliable operation These openings must not be blocked or covered The product must be installed in accordance with the instructions given in this manual Heat Do not operate the pro

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