Lake LM Series User manual

LM SERIES
Digital Audio Processors
Rev. 1.3.6
Quick Start Guide
Item no. QSG-LM

1. Important safety instructions
2 LM SERIES Quick Start Guide rev 1.3.6
1. Important safety instructions
Before using the device, be sure to carefully read the Safety Instructions. Keep this document with the device at
all times.
1. Read these instructions.
2. Keep these instructions
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance
with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including ampliers)
that produce heat.
9. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades with
one wider than the other. A grounding-type plug has two
blades and a third grounding prong. The wide blade or
the third prong is provided for your safety. If the provided
plug does not t into your outlet, consult an electrician for
replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched,
particularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
11. Only use attachments/accessories specied by the
manufacturer.
12. Use only with a cart, stand, tripod, bracket, or table specied
by the manufacturer, or sold with the apparatus. When a
cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when
unused for long periods of time.
14. Refer all servicing to qualied service personnel. Servicing
is required when the apparatus has been damaged in any
way, such as power-supply cord or plug is damaged, liquid
has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.
15. Use the mains plug to disconnect the appartus from the
mains.
16. WARNING: To reduce the risk of re or electric shock, do not
expose this apparatus to rain or moisture.
17. Do not expose this equipment to dripping or splashing and
ensure that no objects lled 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 voltage source
such as battery, mains source, or power supply, regardless
of whether the unit is turned on or off.
20. Do not remove the top (or bottom) cover. Removal of the
cover will expose hazardous voltages. There are no user
serviceable parts inside and removal may void the warranty.
21. An experienced user shall always supervise this professional
audio equipment, especially if inexperienced adults or
minors are using the equipment.
22. The US National Differences clause 16.3 requires that
network cables must be ame rated VW-1.
1.1 Approvals
1.2. Explanation of warning symbols
1.3. Warnings
To prevent electric shock do not remove top or bottom
covers. No user serviceable parts inside, refer servicing to
qualied service personnel.
Français: À prévenir le choc électrique n’enlevez pas les
couvercles. Il n’y a pas des parties serviceable à l’intérieur, tous
reparations doit etre faire par personnel qualié seulment.
The lightning bolt triangle is used to
alert the user to the presence of
un-insulated “dangerous voltages”
within the unit’s chassis that may be
of sufcient magnitude to constitute a
risk of electric shock to humans.
The exclamation point triangle is used to
alert the user to presence of important
operating and service instructions in the
literature accompanying the product.
This equipment conforms to the requirements
of the EMC Directive 2014/30/EU and the
requirements of the Low Voltage Directive
2014/35/EU.
Standards applied: EMC Emission
EN55103-1, E3
EMC Immunity EN55103-2, E3, with S/N
below 1% at normal operation level.
Electrical Safety EN60065, Class I
This equipment is tested and listed according to the
U.S. safety standard ANSI/ UL 60065 and
Canadian safety standard CSA C22.2
NO. 60065. Intertek made the tests and they
are a Nationally Recognized Testing Laboratory
(NRTL).

3
LM SERIES Quick Start Guide rev 1.3.6
To completely disconnect this equipment from the AC
mains, disconnect the power supply cord plug from the AC
receptacle. The mains plug of the power supply cord shall
remain readily operable.
Français: Pour démonter complètement l’équipement de
l’alimentation générale, démonter le câble d’alimentation
de son réceptacle. La prise d’alimentation restera aisément
fonctionnelle.
To reduce risk of re or electric shock, do not expose this
apparatus to rain or moisture.
Français: Pour réduire les risques d’incendie ou de choc
électrique, n’exposez pas l’appareil à la pluie ou à l’humidité.
Do not expose this system/apparatus to dripping or splashing
and ensure that no objects lled with liquids, such as vases,
are placed on the apparatus.
Français: N’exposez pas ce système/appareil au
ruissellement ni aux éclaboussures et assurez-vous qu’aucun
objet contenant du liquide tel qu’un vase n’est placé sur
l’appareil.
This apparatus must be connected to a mains socket outlet
with a protective earthing connection.
Français: Cet appareil doit être raccordé à une prise secteur
avec terre de protection.
The mains plug is used as a disconnect device and shall
remain readily operable.
Français: Lorsque la prise du réseau d’alimentation est utilisés
comme dispositif de déconnexion, ce dispositif doit
demeuré aisément accessible.
1.4. Caution
To reduce the risk of re or electric shock, do not remove screws.
No user-serviceable parts inside. Refer servicing to qualied
service personnel.
Français: Pour réduire le risque d’incendie ou de choc
électrique, ne pas retirer les vis. Aucune pièce réparable par
l’utilisateur. Coner l’entretien àpersonnel qualié.
1.5. User responsibility
1.5.1. Mains connection grounding
Your amplier must be connected to a grounded socket outlet.
1.5.2. Speaker output hazard on amplifiers
Ampliers are capable of producing hazardous output
voltages. To avoid electrical shock, do not touch any exposed
speaker wiring while the amplier is operating. The external
wiring connected to the speaker terminals shall be installed
by a qualied person, or ready-made leads or cords of
appropriate capacity shall be used.
As the power output channels on ampliers produce high
voltage, do not connect or disconnect speaker cables when
the mains power is on.
1.5.3. Radio interference
A sample of this product has been tested and complies with
the limits for the European Electro Magnetic Compatibility
(EMC) directive. This equipment has also been tested and
found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful
interference from electrical equipment. This product uses
radio frequency energy and if not used or installed in
accordance with these operating instructions, may cause
interference to other equipment, such as radio receivers.
However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which
can be determined by turning the equipment on and off, the
user is encouraged to try to correct the interference by one or
more of the following measures:
• Reorient or relocate the antenna.
• Increase the separation between the equipment and
receiver.
• Connect the equipment to an outlet on a circuit different
from that to which the receiver is connected.
• Check if the affected unit complies with the EMC limits for
immunity, (CE-labeled). If not, address the problem with
the manufacturer or supplier. All electrical products sold
in the EC must be approved for immunity against
electromagnetic elds, high voltage ashes, and radio
interference.
• Consult the dealer or an experienced radio/TV technician
for help.
1.5.4. Speaker damage
Amplier apparatus is very powerful and can be potentially
dangerous to both loudspeakers and humans alike. Many
loudspeakers can be easily damaged or destroyed by
overpowering them. Always check the speaker’s continuous
and peak power capabilities. Although the ampliers
attenuators can be used to reduce the overall gain, an
increase of the input signal can result in full output power,
which may cause damage to connected speakers.
1.5.5. Maintenance
For safe and reliable operation, the dust lters on both sides
of the front panel, behind the grilles, should be removed and
cleaned regularly to ensure maximum airow through the
device.
If the dust lters are not maintained there will be safety
risks; for example, high internal temperatures could ignite
the dust and start a re. There is also a risk that the unit
will malfunction since it is dependent on constant airow
from front to rear. If the dust lters are not clean and the unit
malfunctions, any resulting problems will not be covered by
the warranty.
3. Warnings
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003
du Canada.

4. Table of Contents
4 LM SERIES Quick Start Guide rev 1.3.6
4. Table of Contents
1. Important safety instructions 2
1.1 Approvals2
1.2. Explanation of warning symbols2
1.3. Warnings 2
1.4. Caution 3
1.5. User responsibility 3
2. Introduction 6
2.1. Welcome 6
2.2. Main Features 6
2.2.1. Lake Processing and Controller 6
2.2.2. Analyzer Plug-In 6
2.2.3. Dante™ Audio Network 7
2.3. Additional Documentation 7
3. Installation 8
3.1. Unpacking 8
3.2. Mounting 8
3.3. Cooling 8
3.4. Operating voltage 9
3.5. Grounding 9
4. Product overview 10
4.1. Front panel 10
4.2. Rear panel 12
5. Signal Flow and LAKE Processing 14
5.1. Signal ow 14
5.2. LAKE Processing and Control 16
5.3. Modules and Frames 16
5.3.1. Overview16
5.3.2. Super Modules 16
5.4. Loudspeaker Processor (Contour Mode) Overview 17
5.5. System Equalizer (Mesa Mode) Overview 17
5.6. Switching between Contour and Mesa Mode 17

4. Table of Contents
LM SERIES Quick Start Guide rev 1.3.6 5
5.7. Files and Presets 17
5.7.1. Module, System and Sub-System Conguration Files 18
5.7.2. Frame and System Presets 18
6. Quick Start Tutorial 19
6.1. Introduction 19
6.2. LAKE Processing and Control 19
6.3. Installing the LAKE Controller Software 19
6.3.1. Overview 19
6.3.2. Software Installation 20
6.3.3. Software and Firmware Updates 20
6.3.4. Ethernet Conguration 20
6.4. LM Series Conguration Tutorial 21
6.5. Gain Structure 24
6.5.1. Input Headroom (Analog Inputs Only) 24
6.5.2. Input Mixer 25
6.5.3. Module Input Gain 25
6.5.4. Module Output Gain (Levels) 25
6.6. Gain / Level Optimization 25
6.6.1. Maximize Volume Capability 25
6.6.2. Minimize Noise 25
7. LM 26 Technical Specications 26
8. LM 44 Technical Specications 27
9. Warranty and support 28
9.1. General 28
9.2. Technical assistance and service28
9.2.1. International service28
9.2.2. Factory service29

2. Introduction
6 LM SERIES Quick Start Guide rev 1.3.6
2. Introduction
2.1. Welcome
Thank you for choosing the LAKE LM Series of Digital Audio Processors. We are condent that you will be pleased
with the performance, unique features, conguration exibility, reliability, and long-term durability offered by
this product.
For fast installation and use of this product, your welcome package includes a printed copy of the LM Series
Quick Start Guide which contains the information required to safely install the product and place it in service.
Control and editing features are accessible via the front panel interface or via the included LAKE
Controller software.
It is recommend that this Quick Start Guide is reviewed to ensure familiarity with the various conguration and
control options.
Thank you again for placing your condence in Lake products.
2.2. Main Features
The LM Series incorporates a number of sophisticated technologies to ensure the best possible performance
and many years of reliable operation. The following section summarizes the benets of each feature; additional
information is available in the reference manuals.
2.2.1. Lake Processing and Controller
LM Series devices integrate seamlessly into the Lake Processing environment and are accessible via the Lake
Controller software. Processing modules offer precise settings for gain, delay, crossover settings, equalization and
limiting. Lake processing features incorporated in each module include Raised Cosine Equalization™, linear phase
crossovers, and LimiterMax™ loudspeaker protection. The Super Module feature allows hardware processing
modules in two or more separate devices to function as a single module in the Lake Controller software. Please
refer to the Lake Controller Operation Manual for further information.
2.2.2. Analyzer Plug-In
Lake Controller software provides integration with third-party real-time analyzers, providing simultaneous
measurement display and EQ adjustment via the Lake Controller. Approved analyzers include Rational Acoustics
Smaart 7 and WaveCapture Live-Capture Light or Live-Capture Pro; additional third-party analyzers may be
approved in the future.
Please refer to the Lake Controller Operation Manual for further information regarding the Analyzer plug-in and
associated functionality.

2. Introduction
LM SERIES Quick Start Guide rev 1.3.6 7
2.2.3. Dante™ Audio Network
LM Series devices include Dante digital audio networking as standard. Utilizing the latest advances in Ethernet
technology, Dante offers simplied system conguration and extremely low latency while delivering very high quality
uncompressed digital audio across the LAKE network. The Zen™ automatic conguration feature enables plug-
and-play setup without third-party DHCP or DNS servers. Dante is compatible with high-bandwidth networks,
allowing large numbers of audio channels to be distributed alongside control and analyzer data.
2.3. Additional Documentation
This document, the LAKE LM Series Quick Start Guide, serves as a basic introduction to the installation and
operation of LM Series devices. More detailed information is available in the comprehensive LAKE LM Series
Operation Manual, which serves as the primary reference source for detailed information on the installation and
operation of LAKE LM Series devices.
If you intend to use the device as part of a networked system, or access features via the LAKE Controller, please
refer to the various supporting documents which can be located via these methods:
• Start > Programs > LAKE Controller > Documentation (after installing LAKE Controller software)
• Online at: http://lakeprocessing.com/

3. Installation
8 LM SERIES Quick Start Guide rev 1.3.6
3. Installation
3.1. Unpacking
Carefully open the shipping carton and check for any damage to the device or the supplied accessories. Every
LAKE product is tested and inspected before leaving the factory and should arrive in perfect condition. If any
damage is discovered, please notify the shipping company immediately. Only the consignee may initiate a claim
with the carrier or their insurers for damage incurred during shipping. Save the carton and packing materials for the
carrier’s inspection.
In addition to the LAKE LM Series device, the shipping carton include the following items:
• LAKE LM Series Quick Start Guide
• AC mains lead (IEC power cable) with locking connector
• AES break-out cable (8-in, 8-out)
• Ethernet Cable
Please keep the original carton and associated packaging to facilitate shipping of the device should the need arise.
3.2. Mounting
Airow for cooling the device is from side to side (right-side intake to left-side fan). Please ensure there is sufcient
space each side of the unit to allow airow; the space provided by standard rack-rails should be sufcient. This
device has no top or bottom vents and therefore may be stacked directly on top of each other.
Sufcient space should be available at the front of the rack to accommodate the handles, and at the rear to
accommodate connectors and cables; allowance must be made for cable or loom bends within a rack.
3.3. Cooling
The LAKE LM Series devices use a forced-air cooling system, with airow from right to left. The dust lter on the
air intake (right-side) should be regularly cleaned, especially after exposure to dusty environments, to ensure the
maximum possible airow through the unit.
This device is designed to operate in situations where the ambient temperature is below 55° C (131° F). Automatic
actions and warnings occur at following temperature thresholds:
• At 40° C (104° F) or less, the fan is OFF
• At more than 40° C (104° F) the fan is ON
• At 55° C (131° F) a temperature warning is indicated on the front panel as ‘TEMP WARNING’ and in the
Controller Event Log as ‘Temp warning: DSP area’.
• At 70° C (158° F) the device has exceeded the maximum normal operating temperature. This fault is indicated
on the front panel as ‘OVERTEMP’ and in the Controller Event Log as ‘Temp fault: DSP area’.

3. Installation
LM SERIES Quick Start Guide rev 1.3.6 9
NOTE: The Processor will NOT mute or shut down when the temperature reaches or exceeds 70° C
(158° F), however, sustained performance at this temperature cannot be guaranteed.
3.4. Operating voltage
The label above the IEC connector indicates the AC mains voltage range for which the device is approved.
LM Series devices utilize a universal power supply, and will operate within the range 70-265 V ~ 50 - 60 Hz: 25W.
If the plug on the IEC cable provided is not appropriate for your country, a locally-sourced IEC cable with the
appropriate molded plug should be used. A locking IEC cable is not necessary in order to power the device,
although is essential if locking functionality is required. Once a suitable AC power supply is connected, the device
can be turned on using the front panel power button. When the device is turned on, the power button LED
changes from red (Standby) to green (Active).
3.5. Grounding
Analog inputs and outputs feature Iso-Float™ ground isolation, a technology which combines the benets of
transformer-coupled isolation with the advantages of clean, direct-coupled inputs and outputs.
The audio converters are galvanically isolated, and not connected to the main ground. High-speed transformers
and opto-isolators create a barrier between the device and the outside electrical environment.
NOTE: The Iso-Float feature is activated by default, but may be disabled via the LAKE Controller
software, or via the front panel menu.
Use correctly-shielded balanced audio input connections to minimise hum and interference. Please refer to section
7.1.5 of the LM Series Operation Manual for further information.
NEVER disconnect the earth (ground) pin on the mains cable (AC power cord).

4. Product overview
10 LM SERIES Quick Start Guide rev 1.3.6
4. Product overview
4.1. Front panel
Figure 4.1: LM Series Front Panel Layout
The front panel controls are clustered around a daylight readable LCD 3 , allowing adjustment and monitoring of
the majority parameters and meters. The two clusters of controls on either side of the LCD include ve dedicated
function buttons 4 5 6 , six dynamic function buttons with embedded LEDs 7 8 and a rotary data encoder 9 .
To the right of these controls is a dynamic illuminated I/O divider 10 along with input and output 11 mute buttons
and level meters.
1 Handles - Two sturdy cast aluminium handles are integrated into the front panel. The handles should be used
when carrying the device, and when tting into or removing from a rack. Ensure that any door or removable rack
front cover has sufcient depth to clear the handles.
2 Standby - LM Series devices are powered on and placed into standby mode using the left-most button, or via
the LAKE Controller. Standby mode is not equivalent to turning the device off at the mains power.
NOTE: All audio in and out of the processor is muted when in Standby mode. Network communication
remains active to allow the device to be turned on via the LAKE Controller.
3 Display - The display illuminates when the device is on. The LCD, function buttons, and the rotary encoder
provide real-time control and monitoring of most parameters. The LEDs embedded in the function buttons indicate
available menu options, provide conrmation of Controller communication, and indicate various faults
and warnings. The brightness and contrast of the display and front panel LEDs can be adjusted via the front panel
menu. Please refer to chapter 6 of the LM Series Operation Manual for further details.
4 Meter - The METER button scrolls through various meter views including the default Home View, Input Meters
View (Mesa Mode only) and I/O Status View. Pressing METER from Menu Mode returns the screen to Meter Mode
with the Home View displayed. Please refer to section of the LAKE LM Series Operation Manual for further details.
5 Menu - After pressing the MENU button, the LCD will display the top level menu. In Menu Mode the dynamic
function buttons enable access to various information and functionality. Please refer to section 6.5 of the LM Series
Operation Manual for further details.