Description

The LM 44 provides a four input/four output analog configuration that is suited for a variety of system signal processing and routing applications. The LM 44 also provides 8 × 8 AES3 digital I/O and 4 × 8 Dante networked I/O, all with comprehensive signal routing to provide Dante break-in / break-out and failover functionality. Two LM 44 units may be stacked and linked to function as an 8 × 8 processor.

LM 44 provides the ultimate combination of input/output signal flexibility and fail-safe operation. Audio inputs are accepted via the Dante network as well as on connectors for AES3 digital and analog.
Simple programming in LAKE Controller allows multiple, user-configured automatic switching scenarios. For example, signals may be distributed over the Dante network, with an AES3 input source failing over to analog – and with the result automatically cascading to all Dante receivers. In addition, the LM Series’ dual-redundant network topology enables seamless switching in case of a problem on one Ethernet link.

 

Features

  • High-performance Lake digital audio system processor for unparalleled loudspeaker management and system control
  • Raised Cosine Equalization plus linear phase and classic crossovers for ultimate sound-shaping abilities
  • Configurable Lake groups offers simultaneous non-destructive parameter adjustments across all Lake platforms
  • Redundant audio inputs and on-board system surveillance for full system security
  • Full system control via Lake Controller touch-screen-optimized software application
  • LimiterMax Peak and RMS limiters offer seamless power output control
  • 4 x Lake Mesa modules or 2 x Lake Contour modules for optimized system or loudspeaker control
  • 4 x analog inputs and 4 x analog outputs with Iso-Float ground isolation provided through Neutrik XLR* connectors
  • 4 x AES3 digital audio inputs and 4 x AES3 digital audio outputs with up to 192 kHz sampling frequency provided through Neutrik XLR connectors
  • 2 x Neutrik etherCON* RJ-45 ports provide dual-redundant Dante interfaces and remote configuration via Lake Controller and Dante Controller software
  • High quality A/D and D/A 24-bit conversion and 96 kHz internal sampling frequency
  • Front panel accessible Dedicated Module Input and Output Mute buttons and LED metering
  • Rugged 1U rackmount chassis for space saving durability in touring applications
  • 100 user presets for simple and efficient system configuration and set-up
  • Backlit, white-on-black front panel daylight readable display
  • Dynamic buttons and rotary encoder for front panel parameter adjustment
  • Software configurable GPIO for 3rd party system control
  • Universal 70 – 265 V power supply served through a locking IEC mains connector

Specifications

Features

Module configuration2 Contour or 4 Mesa modules
Channel processing6 in Contour mode, 4 in Mesa mode
Input routers8 input routers with 4 priorities in each, seamless failover to lower priorities
Module input mixer4 ch. for Contour, 8 ch. for Mesa-modules. Mix any ratio between all input routers.
Input processingParameteric EQ with Mesa and Ideal Graphic equalizers, both utilizing Raised Cosine algorithms
Output processingLinear phase or Classic crossovers, Parametric EQ, shelving and all-pass filters
FeaturesDelay, Mute, Phase, Gain etc.
LimitersLimiterMax with Peak and RMS limiter. Confi gurable MaxRMSLevel, MaxRMSCorner, MaxRMSAttack, MaxRMSRelease and MaxPeakLevel
SuperModule compatibleYes

Audio Performance

Conversion resolution24-bit
Internal Sample Rate / Data path96 kHz / 32 bit floating point
Product propagation delayBest case (AES synchronous 96 kHz to AES synchronous 96 kHz via module) 0.871 ms Analog (Analog in to Analog out via module) 1.049 ms Pass thru (Analog in to AES synchronous 96 kHz bypassing module) 0.158 ms
Maximum available user delay2 seconds

Analog

Inputs and Outputs4 inputs, 4 outputs
Frequency response, analog-to-digital+/-0.1 dB, 20 Hz to 20 kHz
Frequency response, digital-to-analog+/-0.03 dB, 20 Hz to 20 kHz
THD+Noise, inputs0.00024% typical at 1 kHz
THD+Noise, Outputs0.00037% typical at 1 kHz
Dynamic range, inputs116 dB
Dynamic range, Outputs115 dB
Input impedance20 kOhm balanced, 10 kOhm unbalanced
Output impedance50 ohms
Maximum input level+26 dBu
Input sensitivity – settings for digital full-scale+12 dBu, +26 dBu
Maximum output level21 dBu
Crosstalk, inputs-98 dB, 20 Hz to 20 kHz
Crosstalk, outputs-98 dB, 20 Hz to 20 kHz
Common mode rejection ratio (CMRR)>70 dB, 20 Hz to 20 kHz

Dante Audio Network

Inputs and Outputs4 inputs, 8 outputs
Supported sample rates48, 96 kHz
Support redundant pathsGlitch-free Dual Redundant Dante using two Ethernet networks
Receiver latency0.5 ms, 0.8 ms, 1.3 ms, 4 ms

Device presets

Frame presets100

AES3/EBU (sample rate converters available as desired)

Inputs and Outputs8 inputs, 8 outputs
Supported sample rates44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz (I/O individually selectable)
Supported resolutionsUp to 24-bit
THD + Noise0.00002 % at 96 kHz and 0.00006 % at 44.1 kHz sample rate
Dynamic rangeBase48 -140 dBFS, Base44 -125 dBFS

Clocking

Clock selectionManual or automatic according to priority scheme
Oscillator type / synchronizationHigh quality VCXO clock can provide Dante master clock or slave. Automatic synchronization with Dante network.
Base482 (Primary and SRC)
Base441 (SRC)
Clock accuracy< ± 7 ppm

GPIO

Inputs2 General Purpose Inputs (GPI) supporting external contact closure
Outputs2 General Purpose Outputs (GPO) with internal contact closure
Software configurable input controlStandby state, Mute state, Dual preset recall
Software configurable output indicationStandby state, Mute state, Faults, Ready

Back panel Interface

Analog Inputs and Outputs4 + 4 XLR
AES Inputs and OutputsDB-25, with selectable termination
Ethernet PortsAuto 100/1000, Auto uplink, 2 x Neutrik etherCON RJ45 connectors
GPIODB-9
PowerDetachable locking 3-pin IEC
Control and monitoring interfaceVia Ethernet for Lake Controller software, or DLM (the 3rd party protocol)

Front-panel user interface

DisplayDaylight readable monochrome (128 x 64)
MetersLED for signal level and clip indicators per channel
Mute accessDedicated Mute button and LED indication per processing channel
MenuIntuitive and powerful user interface with soft keys
System status indicationLED Fault and Warning indication and detailed description on display
Parameter adjustmentSingle/multiple parameter edits with rotary encoder

Power

Nominal voltage100 – 240 VAC
Operating voltage70-265 V AC
Power consumption30 W maximum

Dimensions

Dimensions483 mm (19″), 44 mm (1 U), 290 mm (11.5″)

Weight

Weight5 kg (11 lbs)

Finish

FinishBlack painted steel chassis with cast alumimum handles

Approvals

ApprovalsCE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC

 

 

Additional information
Brand

Lake

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