Lab.gruppen Lake LM 26 Operation Manual Download Page 1

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Lake

LM 26

Digital Audio Loudspeaker Processor

Rev 1.1.8

Item: OM-LM26

Operation Manual

Summary of Contents for Lake LM 26

Page 1: ...Lake LM 26 Digital Audio Loudspeaker Processor Rev 1 1 8 Item OM LM26 Operation Manual...

Page 2: ...t no objects filled with liquids such as vases are placed on the equipment 18 The mains plug of the power supply cord shall remain readily operable 19 Do not connect the unit s output to any other vol...

Page 3: ...ied service personnel Pour r duire le risque d incendie ou de choc lectrique ne pas retirer les vis Aucune pi ce r parable par l utilisateur Confier l entretien personnel qualifi 1 6 FCC Compliance No...

Page 4: ...7 1 Mains Connection Grounding Your apparatus must be connected to a grounded socket outlet 1 7 2 Maintenance For safe and reliable operation the dust filter on the right hand side air intake should b...

Page 5: ...Mounting 3 3 3 Cooling 3 3 4 Operating Voltage 4 3 5 Grounding 4 4 Product Overview 5 4 1 Front Panel Overview 5 4 2 Back Panel Overview 7 5 Signal Flow and Lake Processing 10 5 1 Signal Flow 10 5 2 L...

Page 6: ...ults and Warnings Overview 45 8 2 Maintenance 46 8 3 Factory Default Settings 46 8 4 Glossary of Terms Acronyms and Abbreviations 47 9 Application Guide 50 9 1 Gain Structure 50 9 2 Gain Level Optimiz...

Page 7: ...ogies to ensure the best possible perfor mance and many years of reliable operation The following section summarizes the benefits of each feature additional information is available in the reference m...

Page 8: ...uncompressed digital audio across the Lake network The Zen automatic configuration feature enables plug and play setup without third party DHCP or DNS servers Dante is compatible with high bandwidth n...

Page 9: ...should the need arise 3 2 Mounting Airflow for cooling the LM 26 is from side to side right side intake to left side fan Please ensure there is sufficient space each side of the unit to allow airflow...

Page 10: ...e for your country a locally sourced IEC cable with the appropriate molded plug should be used Once a suitable AC power supply is connected the device can be turned on using the front panel power butt...

Page 11: ...on buttons six dynamic function buttons with embedded LEDs and a rotary data encoder To the right of these controls are dedicated module input and output mute buttons and level meters Handles Two stur...

Page 12: ...p level menu In Menu Mode the function buttons enable access to various information and functions Please refer to section 6 5 for further details Exit The EXIT button is used primarily while navigatin...

Page 13: ...s the ring around the rotary encoder illuminates In Home View the encoder can be used to scroll through the Meter Views Input Mutes and Meters Independent mute buttons and five segment LED meters are...

Page 14: ...76 4 192 kHz Primary Network Connector The primary Neutrik RJ45 etherCON connection provides integration into an Ethernet control network which may include other Lake Processors and the Lake Controlle...

Page 15: ...ion Guide When connecting multiple devices to an Ethernet network care must be taken NOT to create a closed loop which causes network malfunction GPIO Connector A 9 pin GPIO General Purpose Input Outp...

Page 16: ...signal level can be adjusted muted or disconnected Important information regarding correct setting of the gain structure can be found in section 9 1 Figure 5 1 Signal Flow Diagram LM 26 5 1 1 Level A...

Page 17: ...ide are supplied on the accompa nying CD ROM and additional documentation is available from the Start Menu after software installation 5 3 Modules and Frames 5 3 1 Overview A Frame represents one phys...

Page 18: ...terworth or Linkwitz Riley types these are available with slopes ranging from 6 dB octave to 48 dB octave Finite Impulse Response filters FIR providing zero phase shift with steep transition slopes at...

Page 19: ...Frame Preset includes the configurations of both Modules in the Frame including all levels crossover EQ input mixer output routing and all other Module Frame and Group parameters As Frame Presets are...

Page 20: ...further information on Meter Mode Menu Mode provides various menus for viewing and editing parameters and is selected by pressing the MENU button Select the required submenu by pressing the associated...

Page 21: ...k Figure 6 2 Locking Unlocking Front Panel Controls 6 3 Power Button The unit is powered on by pressing the left most button on the front panel labelled in Figure 6 1 It has a bi color power symbol wh...

Page 22: ...6 6 Exit Button In Menu Mode pressing the EXIT button returns back one menu level In Meter Mode pressing EXIT returns the display to the Home View 6 7 Dynamic Buttons Controls and LEDs Figure 6 3 LCD...

Page 23: ...Overtemperature OVERTEMP Temp Fault DSP area No Input Source Available NO INPUT No Input Source Analog Input Fault ANALOG IN FAULT Frame Fault Analog input Fan Alarm FAN FAULT Frame Fault Fan error In...

Page 24: ...Use the rotary encoder to change the value It is possible to select multiple parameters for simultaneous editing even if the values are different on each channel Turning the rotary encoder will adjust...

Page 25: ...oder The Input Mutes can also be viewed and changed via the front panel I O Config Menu Module Input and Output Mutes are controlled via the dedicated mute buttons under neath each channel s five segm...

Page 26: ...vity setting a clip indication will be given This does not apply if digital inputs are selected Module Inputs If the signal level at this point exceeds 25 dBu a clip indication will be given Module Ou...

Page 27: ...locking status If an LM 26 input is muted the top right LED is illuminated red as shown in Figure 6 6 and the frame fault text in section A of the screen will display INPUT MUTE The fault and warning...

Page 28: ...th all inputs or outputs adjusted simultaneously Changes are effected in real time and a stored without further confirma tion Pressing EXIT returns to the previous menu level automatically retaining a...

Page 29: ...utput Router FRAME See section 6 10 4 Frame Information Frame Reset Latency Match GPIO Configuration Front Panel FRAME PRESETS See section 6 10 6 Preset Recall For simplicity the following sections re...

Page 30: ...e Frame Press any other illuminated button to select a parameter for editing then use the rotary encoder to make adjustments Multiple parameters may be selected and adjusted together 6 10 2 2 Gain MEN...

Page 31: ...ry encoder Figure 6 11 Module A B Combined Gain Summary Edit Screen On the combined module summary screen use the NAV button to navigate through the channels and the SEL button to select a parameter f...

Page 32: ...s MENU MODULE LIMITERS LimiterMax parameters can be adjusted via this submenu By default simultaneous adjustment of most limiter parameters across all output channels is selected although channels may...

Page 33: ...rd knee characteristic LimiterMax provides peak and RMS limiting features referred to as MaxPeak and MaxRMS respectively Full details regarding LimiterMax can be found in the Lake Controller Operation...

Page 34: ...Lake Controller In Auto Select mode Priority 1 is checked for a valid input signal if no signal is found Priority 2 is checked and so on until a valid signal is located this process occurs if the curr...

Page 35: ...nput Termination MENU I O CONFIG AES TERM Figure 6 14 AESTermination Edit Screen To adjust the AES3 Input Termination select AES TERM from the I O Config menu then use the rotary encoder to toggle the...

Page 36: ...t achieved with transformer based designs However pin 1 of the XLR input connector may be connected to ground within the LM 26 if desired This option is selected by using the rotary encoder to toggle...

Page 37: ...s Press this button to move the cursor to the left Press this button to move the cursor to the right Use the rotary encoder to toggle the selected routing point ON or OFF Use the above function keys t...

Page 38: ...ed or altered if stolen Network Pressing the NETWORK button displays a further screen containing network configuration information All parameters are view only on the front panel and are either not ed...

Page 39: ...ed to complete this reset Soft Reset A Soft Reset will reset all settings and parameters to the original factory defined default values but retains Frame Preset information and IP Network configuratio...

Page 40: ...tion Option Protective Mute State 1 No Action 2 Toggle State 3 Mute 4 Unmute Standby State 1 No Action 2 Toggle State 3 Standby 4 Turn On Preset Recall 1 No Action 2 Recall 99 3 Recall 100 No Action T...

Page 41: ...State when Closed Protective Mute State 1 Muted 2 Unmuted Standby State 1 Standby 2 On Fault 1 No Fault 2 Any Fault Ready 1 Ready 2 Not Ready No Indication Table 6 4 GPO Options Factory Reset and Sof...

Page 42: ...t Panel Display Controls MENU FRAME FRONT Figure 6 21 Front Panel Display Controls Menu Contrast To adjust the front panel LCD contrast select this option then use the rotary encoder to change the val...

Page 43: ...be created in the Lake Controller and stored as a Preset using the Lake Controller or Lake Preset Manager Up to 100 Frame Presets can be stored in the device The data within a Frame Preset includes t...

Page 44: ...nel Interface 7 1 Analog Inputs and Outputs 7 1 1 Analog Output XLR Connections Six electronically balanced analog outputs are provided via standard XLR3M connections OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT...

Page 45: ...as shown in Figure 7 5 1 2 3 COLD HOT SCRN COLD HOT SCRN Unbalanced Output Typically phono Balanced Input XLR Figure 7 5 Balanced to Unbalanced Analog Wiring and Pin Out The method shown in Figure 7 5...

Page 46: ...isolated and not connected to the main ground High quality transformers and opto isolators create a barrier between the device and possible grounding aberrations from the outside electrical environme...

Page 47: ...uts Figure 7 8 below provides a wiring reference for the DB25 connector Ch Ground Hot Cold 1 2 IN 10 1 14 3 4 IN 10 2 15 5 6 IN 12 3 16 7 8 IN 13 4 17 1 2 OUT 22 5 18 3 4 OUT 23 6 19 5 6 OUT 24 7 20 7...

Page 48: ...oulded RJ45 plugs are recommended If it is necessary to make up custom Cat 5e network cables use pinout described in Table 7 2 Pin No Color 1 Brown 2 Brown White 3 Green 4 Blue White 5 Blue 6 Green Wh...

Page 49: ...s fire alarm systems for emergency muting processor power control or preset recall The GPO function allows fault and state monitoring via external systems Figure 7 11 in conjunction with Table 7 3 des...

Page 50: ...accepting 70 265 V 50 60 Hz 30 W is built into the LM 26 The IEC power cable provided includes a locking feature via a pin on the bottom of the connector the connector can accept standard or locking...

Page 51: ...put is muted all Modules and outputs sourced from this input will be affected NO INPUT No Input Source Fault No input signal of any type can be identified Connect an input source or verify input signa...

Page 52: ...alified service personnel This may be necessary if the device has had prolonged operation in an extreme environment such as one where cracked oil smoke machines are in use If the device is used in ext...

Page 53: ...ing multichannel high resolution digital audio plus control data to be transmitted via standard IT industry networks using TCP IP data packets The Lake processing system integrated within the LM 26 in...

Page 54: ...ms part of the Lake Processing system Line Driver An analog audio amplifier usually with zero gain having very low output impedance and high drive capability They are used for transmitting balanced an...

Page 55: ...when drawn as a diagram with the switch at the centre Straight Network Cable A Cat 5 6 network cable with full pin to pin connections is called a straight network cable Lake devices can connect to a...

Page 56: ...uration in the Lake Controller Please refer to the Lake Controller Operation Manual for further details 9 1 2 Input Mixer Input Mixer gains can remain at 0 00 dB for most configurations if only one in...

Page 57: ...o help provide the best volume to noise ratio use an AES or Dante digital input signal wherever possible If using analog inputs ensure that unused or unnecessarily high headroom is not introduced at t...

Page 58: ...delay referred to as latency If the processing chain does not involve analog to digital or digital to analog conversion the amount of latency is usually very small and often may be disregarded However...

Page 59: ...4 Additional Reference Material Complete technical information on the AES EBU AES3 standard can be downloaded from the AES web site at http www aes org publications standards 9 4 Digital Clock Configu...

Page 60: ...also derived if the SRC Clock s base rate is 48 kHz then 96 and 192 kHz clocks are also derived In most typical applications SRC Clock will be set at a base rate of 44 1 kHz A base rate of 48 kHz is p...

Page 61: ...y Digital Clock to lock the sample rate for the Dante Master The Primary Clock on all Dante Slaves will be overridden by the Dante Clock The front panel I O Status View indicates if that device is sel...

Page 62: ...tes 44 1 48 88 2 96 176 4 192 kHz Termination Selectable Dante Audio Network Inputs and Outputs 4 inputs 8 outputs Supported sample rates 48 96 kHz Supports redundant paths Yes Flexible topology Yes N...

Page 63: ...normal wear and tear is not covered by the warranty Units on which the serial number has been removed or defaced will not be eligible for warranty service Lake shall not be responsible for any incide...

Page 64: ...e product prepaid to Lake Faktorv gen 1 SE 434 37 Kungsbacka SWEDEN Phone 46 300 56 28 00 Fax 46 300 56 28 99 service lakeprocessing com www lakeprocessing com 11 4 Trademarks Lake is a national and o...

Page 65: ...A L contact info lakeprocessing com U S C A N A D A C O N T A C T info T C G A M E R I C A S com w w w l a k e p r o c e s s i n g c o m L ake is a wholl y owned subsidiar y of L ab gruppen A B S wed...

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Lab.gruppen Lake LM 26, Operation Manual

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