LAB GRUPPEN LM 44 Digital Audio System Processor
The LM 44 provides all the popular features found in legacy Lake Processors, including Mesa EQ filters, Linear Phase crossovers, AES3 connectivity,
analog I/O with Iso-Float and Dante digital audio. In addition, this flagship Lake Processor range includes dual redundant Dante networking,
GPIO connectivity, and new routing capabilities with dedicated pass-thru input routers to provide true Dante break-in and failover functionality.
The processor can be software-configured to operate in Mesa mode (4-channel System Processor) or Contour mode (Loudspeaker Crossover).
A total of eight input routers can be independently configured with up to four input failover priority settings. Also the output of any of these eight
input routers can also be patched directly to any analog, AES3 or Dante output without using any of the valuable Module processing channels
Features
▸ Configurable Lake®
Processor
▸ Mesa Mode ( System EQ Processor 4-in/4-out)
▸ Contour Mode (Loudspeaker Processor 2-in/6-out)
▸ Raised Cosine Equalization™
▸ Linear phase and Classic crossovers
▸ LimiterMax™ peak and RMS limiters
▸ Maximum available delay of 2 seconds
▸ Audio Inputs and Outputs
▸ 4-in / 4-out Analog with Iso-Float™ ground isolation
▸ Digital AES3 8-in/8-out
▸ Gigabit dual redundant Dante™ by Audinate® audio networking
▸ Full control via Lake Controller software application
▸ 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
Specifications: LM 44
Lake features
Module confi guration 2 Contour or 4 Mesa modules
Processing channels 6 in Contour mode, 4 in Mesa mode
Input routers 8 input routers with 4 priorities in each, seamless failover to lower priorities
Module Input mixer 4 ch. for Contour, 8 ch. for Mesa-modules. Mix any ratio between all input routers.
Input processing Parameteric EQ with Mesa and Ideal Graphic equalizers, both utilizing Raised Cosine algorithms
Output processing Linear phase or Classic crossovers, Parametric EQ, shelving and all-pass fi lters
Features Delay, Mute, Phase, Gain etc.
Limiters LimiterMax with Peak and RMS limiter. Confi gurable MaxRMSLevel, MaxRMSCorner, MaxRMSAttack,
MaxRMSRelease and MaxPeakLevel
SuperModule compatible Yes
Audio Performance
Conversion resolution 24-bit
Internal sample rate 96 kHz
Internal data path 32-bit fl oating point
Product propagation delay Best 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 delay 2 seconds
Analog
Inputs and Outputs 4 inputs, 4 outputs
Frequency Response, analog-to-digital +/-0.1 dB, 20 Hz to 20 kHz
Frequency Response, digital-to-analog +/-0.1 dB, 20 Hz to 20 kHz
THD+Noise, Inputs 0.00024% typical at 1 kHz
THD+Noise, Outputs 0.00037% typical at 1 kHz
Dynamic Range, Inputs 116 dB
Dynamic Range, Outputs 115 dB
Input Impedance 20 kOhm balanced, 10 kOhm unbalanced
Output Impedance 50 ohm
Maximum Input level +26 dBu
Input Sensitivity - settings for digital full-scale +12 dBu, +26 dBu
Maximum Output level +21 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
AES3/EBU (sample rate converters available as desired)
Inputs and Outputs 8 inputs, 8 outputs
Supported sample rates 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz (I/O individually selectable)
Supported resolutions Up to 24-bit
THD+Noise 0.00002 % at 96 kHz and 0.00006 % at 44.1 kHz sample rate
Dynamic Range Base48 -140 dBFS, Base44 -125 dBFS
Clocking
Clock selection Manual or automatic according to priority scheme
Oscillator type / Synchronization High quality VCXO clock can provide Dante master clock or slave. Automatic synchronization with Dante network.
Base48 2 (Primary and SRC)
Base44 1 (SRC)
Clock accuracy < ± 7 ppm
Dante (Audio Network)
Inputs and Outputs 4 inputs, 8 outputs
Supported sample rates 48 kHz, 96 kHz
Support redundant paths Glitch-free Dual Redundant Dante using two Ethernet networks
Receiver latency 0.5 ms, 0.8 ms, 1.3 ms, 4 ms
GPIO
Inputs 2 General Purpose Inputs (GPI) supporting external contact closure
Outputs 2 General Purpose Outputs (GPO) with internal contact closure
Software confi gurable input control Standby state, Mute state, Dual preset recall
Software confi gurable output indication Standby state, Mute state, Faults, Ready
Device presets
Frame presets 100
Power requirements
Nominal Voltage 100-240 VAC
Operating Voltage 70-265 VAC
Power consumption 30 W maximum
Front panel interface
Display Daylight readable monochrome (128 x 64)
Meters LED for signal level and clip indicators per channel
Mute access Dedicated Mute button and LED indication per processing channel
Menu Intuitive and powerful user interface with soft keys
Status indication LED Fault and Warning indication and detailed description on display
Parameter Adjustment Single/multiple parameter edits with rotary encoder
Back Panel Interface
Analog Inputs and Outputs 4 + 4 XLR
AES Inputs and Outputs DB-25, with selectable termination
Ethernet Auto 100/1000, Auto uplink, 2 x Neutrik etherCON RJ45 connectors
GPIO DB-9
Power Detachable locking 3-pin IEC
Control and monitoring interface Via Ethernet for Lake Controller software, or DLM (the 3rd party protocol)
Dimensions (W/H/D) 483 mm (19"), 44 mm (1 U), 290 mm (11.5")
Weight 5 Kg (11 lbs.)
Finish Black painted steel chassis with cast alumimum handles
Approvals CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC
Warranty 3 years, components and factory workmanship; see full warranty statement
Specifications subject to change without notice
