Lake Processing LM 26 Data Sheet

LM 26 – Digital Audio Loudspeaker Processor

Features:

Technical Data Sheet

▸▸ 2-in/6- out▸Lake®▸Proces sor

▸▸ Raised▸Cosine▸Equalization

▸▸ Linear▸phase▸and▸class ic▸crossovers

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▸▸ LimiterMax

▸▸ Maximum▸available▸delay▸of▸2▸seconds

▸▸ Audio▸Inputs▸and▸Outputs

▸▸ Analog▸with▸Iso-Float

▸▸ Digital▸AES3▸4-in/8-out

▸▸ Gigabit▸dual▸redundant▸Dante

▸▸ Full▸control▸via▸Lake▸Controller▸software▸application

▸peak▸and▸RMS▸limiters

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▸ground▸isolation

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▸by▸Audinate®▸audio▸networking

Technology Overview

The▸ LM▸ 26▸ is▸ a▸ full-featured,▸ 2-in/6- out▸ stand-alone▸ Digital▸ Audio▸
Loudspeaker▸ Processor.▸ Based▸ on▸ the▸ highly▸ acclaimed▸ Lake▸▸
Processing▸ technology,▸ it▸ provides▸ seamless▸ compatibility▸ with▸▸
Lab.gruppen’s▸ PLM
systems▸as▸ well▸ as▸ with▸all▸Dolby
sions▸ of▸ the▸ technology,▸ including▸ Lake▸ Mesa▸ Quad▸EQ
Contour▸ Pro▸ 26
capabilities▸allow▸quick▸reconfiguration▸for▸use▸as▸processor▸and▸line▸
driver▸for▸ self-powered▸loudspea ker▸ applications▸ as▸ well▸ as▸ for▸ sys­tems▸using▸separate▸power▸amplifiers.

In▸step▸with▸the▸flexible▸Lake▸Processing▸technology▸ implemented▸in▸
the▸PLM▸Series,▸the▸LM▸26▸will▸accept▸audio▸signals▸as▸analog,▸AES3▸
digital,▸or▸via▸Audinate’s▸advanced▸Dante▸digital▸audio▸network▸at▸48▸
kHz▸ and▸ 96▸ kHz▸ sampling▸rates.▸ Automatic▸ input▸ priority▸ switching▸
may▸be▸enabled,▸and▸ the▸ unit▸ can▸ function▸as▸ both▸ an▸input▸ matrix▸
mixer▸and▸Dante▸break-in▸and▸break-out▸box.

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▸ Series▸ Powered▸ Loudspeaker▸ Management™▸

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.▸ The▸ LM▸26’s▸ easily▸ programmable▸ EQ▸and▸ delay▸

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▸Lake▸Processors▸and▸earlier▸ver-

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▸ and▸ Lake▸

▸▸ Software▸configurable▸GPIO

▸▸ Front▸Panel

▸▸ Daylight-readable▸display

▸▸ Dedicated▸Module▸Input▸and▸Output▸LED▸Metering

▸▸ Dedicated▸Module▸Input▸and▸Output▸mute▸buttons▸with▸LED

▸▸ Dynamic▸buttons▸and▸rotary▸encoder▸for▸parameter▸adjustment

▸▸ Performance

▸▸ High▸quality▸A/D▸and▸D/A▸24- bit▸conversion▸

▸▸ 96▸kHz▸internal▸sampling▸frequency

▸▸ 32-bit▸floating▸point▸internal▸data▸path

Exclusive▸Lake▸Processing▸features▸incorporated▸in▸the▸LM▸26▸include▸
Raised▸ Cosine▸ Equalization;▸ linear▸ phase▸ and▸ classic▸ crossovers;▸
and▸LimiterMax▸ peak▸ and▸ RMS▸limiters.▸Th e▸ Super▸Module▸capabi­lity▸ allows▸ flexible▸ grouping▸ of▸ processor▸channels▸ across▸ separate▸
hardware▸frames,▸including▸prior▸Lake▸products▸and▸PLM▸Series▸units.▸
All▸ functions▸ are▸ controlled▸via▸ wired▸or▸ wireless▸networking▸ by▸ the▸
Windows
power▸supply▸with▸detachable▸locking▸mains▸cable▸allows▸worldwide▸
use.▸

The▸LM▸26▸can▸be▸controlled▸or▸ monitored▸via▸a▸9 -pin▸General▸Pur­pose▸Input▸Output▸(GPIO)▸connection.▸External▸devices▸such▸as▸alarm▸
systems▸can▸ trigger▸ mute,▸ power▸ control▸or▸ preset▸ recall▸ functions;▸
status▸and▸fault▸conditions▸can▸also▸be▸reported▸externally.▸GPIO▸con­figuration▸is▸available▸via▸the▸front▸panel▸or▸Lake▸Controller.

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-based▸ Lake▸ Controller▸ software▸ application.▸ A▸ universal▸

LM 26: Highlights

Display▸Meter▸View:

The▸default▸view▸of▸the▸daylight▸readable▸display▸provides▸Module▸I/O▸gain▸
and▸limiter▸gain▸reduction▸meters▸along▸with▸associated▸frame,▸module▸
and▸channel▸labels;▸▸an▸alternate▸I/O▸Status▸View▸provides▸a▸summary▸
of▸input▸c onfiguration,▸digital▸clock▸status▸and▸input▸level▸meteri ng.▸A▸
dedicated▸LED▸indicates▸various▸faults▸or▸warnings.

Module▸I/O▸Levels▸and▸Dedicated▸Mute▸Buttons:

This▸section▸is▸dedicated▸to▸the▸Module▸input▸and▸output▸signals.▸The▸
inputs▸and▸outputs▸are▸separated▸by▸a▸white▸marker.▸The▸meter▸segments▸
for▸each▸ channel▸indicate▸ clipping▸ (red);▸-2▸dB▸ (yellow);▸ and▸ - 6,▸ -12,▸▸

-60▸dB▸ (green).▸The▸ dedicated▸MUTE▸button▸is▸either▸ RED▸ (muted),▸
WHITE▸(unmuted)▸or▸UNLIT▸(unused).▸▸▸

Powerfu l▸Matrix▸Router:

The▸LM▸26▸provides▸a▸powerful▸output▸routing▸matrix▸via▸the▸front▸panel.▸
This▸matrix,▸similar▸ to▸ the▸ Lake▸ Controller,▸allows▸any▸input▸ or▸ module▸
output▸to▸be▸ routed▸to▸the▸anal og▸or▸ digital▸ outputs.▸ The▸ LM▸ 26▸is▸the▸
first▸Lake▸device▸to▸allow▸I/O▸configuration▸and▸routing▸without▸the▸need▸
for▸a▸computer.

Intuitiv e▸Paramet er▸Adjustment:

Parameters▸are▸ adjustable▸ using▸six▸ dynamic▸ function▸ buttons▸ and▸
a▸ rotary▸ encoder.▸ A▸ user▸ editable▸ parameter▸ is▸ identified▸ with▸ an▸▸
illuminated▸button▸or▸encoder,▸providing▸intuitive▸navigation▸and▸control.▸
Parameters▸ can▸be▸ adjusted▸ in▸small▸ increments▸ and▸ simultaneous▸
multiple-parameter▸adjustment▸is▸also▸available.

Lake▸Controller▸Softw are▸Suite:
▸

The▸Lake▸Controller▸and▸associated▸applications,▸including▸ Firmware▸
Update▸and▸Preset▸Manger▸Utilities,▸form▸a▸powerful▸suite▸of▸software▸
enabling▸detailed▸control▸and▸management▸of▸Lake▸Processor▸networks.▸
The▸ Lake▸ Controller▸ en ables▸ Windows▸ PC-based▸ adjustment▸ of▸ all▸▸
LM▸26▸parameters,▸including▸gain,▸delay,▸limiters,▸EQ,▸crossovers▸and▸
all▸I/O▸configuration▸and▸rou ting.

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Using▸a▸ wireless▸touch-s creen▸Tablet▸PC,▸ the▸Lake▸Controller▸can▸be▸
used▸to▸group▸Processors▸together▸for▸simultaneous▸ control▸from▸any▸
location▸in▸th e▸ venue.▸The▸included▸Lake▸Analyzer▸Bridge▸provides▸ a▸
real-time▸ interface▸ with▸ Smaart▸ Live▸5.4▸and▸ Live▸ Capture▸ Light/Pro,▸
providing▸direct▸audio▸analysis▸and▸measurement▸feedback▸within▸the▸
Lake▸Controller.

One▸Lake▸Controller▸for▸all▸Lake▸Products:

The▸LM▸26▸ integrates▸into▸the▸Lake▸Controller▸software,▸alongside▸PLM▸
Series▸device s,▸ Dolby®▸Lake▸ Processors,▸and▸ all▸ othe r▸legacy▸ Lake▸
devices.▸New▸Lake▸Controller▸functionality▸provides▸LM▸26-specific▸routing▸
features,▸GPIO▸configuration▸and▸combined▸PLM▸and▸LM▸26▸global▸power▸
control▸and▸event▸log.▸

LM 26 – Introducing the New Flagship

The▸ LM▸ 26▸provides▸ all▸ the▸ popular▸features▸ found▸ in▸lega cy▸Lake▸ Processors,▸ including▸ Mesa▸ EQ▸filter s,▸Linear▸ Phase▸ crossovers,▸AES3▸
connectivity,▸analog▸I/O▸with▸Iso-Float▸and▸Dante▸digital▸audio.▸But▸why▸stop▸there?▸This▸new▸flagship▸of▸the▸Lake▸Processor▸range▸also▸includes▸
dual▸redundant▸Dante▸networking,▸GPIO▸connectivity,▸and▸new▸routing▸capabilities▸with▸dedicated▸pass-thru▸input▸routers▸to▸provide▸true▸Dante▸
break-in▸and▸fail-over▸fu nctionality.

LM 26

DIGITAL AUDIO LOUDSPEAKER PR OCESSOR

2/6 OR 4/4 LOUDSPEAKER MANAGEMEN T

INPUT 1OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 OUTPUT 5 OUTPUT 6 INPUT 2

SEC LINKACT

LINKPRIMACT

AES/EBU GPIO

SWITCHED 100/1000 Base-T

CLIP/REF

-2 dB

-6 dB

-12 dB
SIGNAL

MUTE

Ser. N:o

At Lake we listen (and so does the LM 26):

So▸you▸need▸to▸distribute▸Dante▸audio,▸with▸an▸AES3▸input▸source▸failing▸over▸to▸Analog▸and▸the▸result▸cascading▸to▸all▸Dante▸receivers?▸And▸you▸
need▸a▸dual-redundant▸network▸topology▸to▸seamlessly▸switch▸in▸the▸event▸of▸a▸Ethernet▸problem?▸No▸problem.▸The▸LM▸26▸constantly▸listens▸for▸
valid▸input▸signals,▸and▸checks▸for▸valid▸digital▸clocks▸and▸a▸valid▸Ethernet▸network,▸automatically▸switching▸as▸required▸to▸ensure▸the▸show▸goes▸on.▸

A▸total▸ of▸ six▸input▸routers▸can▸be▸ind ependently▸configured▸with▸up▸to▸ four▸ input▸ fail-over▸priori ty▸settings.▸And▸for▸the▸first▸time▸on▸any▸ Lake▸
Processor,▸the▸ output▸ of▸any▸of▸ these▸ six▸input▸routers▸can▸be▸ patched▸directly▸to▸ any▸analog,▸AES3▸ or▸ Dante▸output▸without▸ using▸any▸of▸ the▸
valuable▸Module▸processing▸channels.

Analog 1/2
AES 1, 2, 3, 4
Dante 1, 2, 3, 4

Analog 1/2
AES 1, 2, 3, 4
Dante 1, 2, 3, 4

Analog 1/2
AES 1, 2, 3, 4
Dante 1, 2, 3, 4

Analog 1/2
AES 1, 2, 3, 4
Dante 1, 2, 3, 4

Analog 1/2
AES 1, 2, 3, 4
Dante 1, 2, 3, 4

Analog 1/2
AES 1, 2, 3, 4
Dante 1, 2, 3, 4

Input

Router

1

(Mute)

Input

Router

2

(Mute)

Input

Router

3

(Mute)

Input

Router

(Mute)

Input

Router

5

Input

Router

6

Module Output:

Output EQ

Crossovers

Output EQ

Output EQ

Output EQ

Output EQ

Output EQ

Module:

Input

Mixer A

Input

Mixer B

4

Gain

Phase Rev

Mute

Module:

Gain

Phase Rev

Mute

EQ Delay

EQ Delay

Gain/Delay

Phase Rev

Mute

Module Output:

Gain/Delay

Phase Rev

Mute

Module Output:

Gain/Delay

Phase Rev

Mute

Module Output:

Gain/Delay

Phase Rev

Mute

Module Output:

Gain/Delay

Phase Rev

Mute

Module Output:

Gain/Delay

Phase Rev

Mute

LimiterMax
RMS / Peak

LimiterMax
RMS / Peak

LimiterMax
RMS / Peak

LimiterMax
RMS / Peak

LimiterMax
RMS / Peak

LimiterMax
RMS / Peak

Analog 1, 2
AES 1,2,3,4

Analog 1,2,3,4,5,6

AES 1,2,3,4,5,6,7,8

Dante 1,2,3,4,5,6,7,8

Output Routing

Specifications LM 26

2-in /6- out La ke Proc essor

2 Contou r Modules
Raised C osine Me sa and Ide al graphic input equalizer
Linear phase and classic crossovers and output EQ
LimiterM ax peak and RM S limiter
Delay, mute, phase, gain

Audio Per formance

Internal sam ple rate 96 kHz
A/D an d D/A conversio n resolution 24 bit
Internal data p ath 32 bit floating poi nt
System propagat ion delay < 1.22 ms
Maximum avai lable delay 2 seconds

Analog

Inputs an d Outputs 2 inputs, 6 outputs
Dynamic range, input s 116 dB

ange, out puts 115 dB

Dynamic r

Frequency response, analog to digital
Frequency response, digital to analog
THD + Noise, inputs
THD + Noise, outputs

Iso- Float ground isolation Yes, separate setting for inp ut and output
Input sen sitivity settings 12 or 26 dBu
Maximum output l evel 21 dBu
Input impedance 20 kOhm ba lanced, 10 kOhm unb alanced
Commo n mode rejecti on -74 dB, 20 Hz to 20 kHz
Crosstalk -98 dB, 2 0 Hz to 20 kHz

AES3

In

puts and Outputs 4 inputs, 8 o utputs
Supported resolutions Up to 24 bit
Supported sample r ates 44.1, 48, 88.2, 9 6, 176.4, 192 kHz
Termination Selectab le

Dante A udio Net work

Inputs an d Outputs 4 inputs, 8 output s
Supported sample r ates 48, 96 k Hz
Supports re dundant paths Yes
Flexible topolog y Yes
Networ k latency 0.5, 0.8, 1.3 , 4 ms

Front pan el user in terface

Display Daylight readab le monochro me
Meters LED meters a nd clip indicators pe r channel
Mute access Mute butto n and LED indica tion per chan nel
LED Fault an d Warning indication Yes
Parameter adj ustment Rota ry encode r
Standby Power but ton On/Standby

Back pan el inter face

Analog inp uts and outpu ts 2 + 6 XLR
AES inputs and o utputs DB-2 5
Ethernet Dual Neut rik
GPIO DB-9
Power Locking 3- pin IEC
Control and m onitoring inte rface Via Ethernet for L ake Controll er software

Ethernet

Gigabit Ethernet 1000 Base-T
Fast Ethernet 100

GPIO

Inputs 2 General Pu rpose Inputs (G PI) supporting ex ternal cont act closure
Outputs 2 General Pu rpose Output s (GPO) with intern al contact clo sure
Softw are configurabl e input control Standby state, M ute state, Dual P reset recall
Softw are configurabl e output indica tion Standby state, M ute state, Faults , Ready

Device p reset s

Frame presets 100

Power

Nominal vo ltage 100-240 VAC
Operating volta ge 70-26 5 VAC
Power consu mp

Dimensio ns (W/ H/D) W: 483 mm (19”), H: 4 4 mm (1 U), Overall D: 29 0 mm (11.5”)
Weight 5 Kg (11 lbs.)
Finish Blac k painted steel chas sis with alum inum handles

Approva ls CE, ANS I/UL 6 006 5 (ETL), CS A C22.2 NO. 6 006 5, FCC

Speci ficati ons subje ct to change without noti ce

tion 30 W ma ximum

+/-0.1 dB, 20 Hz to 2 0 kHz
+/-0.0 3 dB, 20 Hz to 2 0 kHz

0.00024% at 1 kHz

0.00037% at 1 k Hz

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etherCON

Base-Tx

L AKE I S A W H OL LY - OWNE D S U BS I DI A RY OF L A B .G R UPPE N A B , S WE D EN

L AKE I S A RE G IS T ER E D T RA D EM A R K O F L A B .G R UPPE N A B . P LM AN D P O WE R ED LO U DS P EAKE R M ANAG E M EN T A R E T RA D EM A RK S O F L A B. G RU PPE N A B. DO L BY IS A R EG IST ER E D T RA D EM A R K O F

D OL B Y L AB O R AT OR I ES . R A IS E D C OS I NE EQ U AL I ZA T IO N , L I MI T ER M A X, IS O - FL OA T, LAKE ME S A Q UA D E Q A ND LAKE CO N T OU R P RO 26 A RE TR A D EM A RK S O F D O LB Y L A BO R AT O RI E S. AU D IN AT E IS

A RE G IS T ER E D T RA D EM A RK O F A UD I NA T E LT D. D ANTE IS A T RA D EM A R K O F A UD I N AT E P TY LT D. AL L O T HE R T R AD E MA R KS AR E TH E P R OP E RT Y O F T H EI R RE S PE C TI V E O WNERS.

Item no. TDS-LM26_V4