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 configuration |
2 Contour or 4 Mesa modules |
| Channel processing |
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 filters |
| 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 / Data path |
96 kHz / 32 bit floating 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 |
+/-0.03 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 ohms |
| 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 |
Dante Audio Network
| Inputs and Outputs |
4 inputs, 8 outputs |
| Supported sample rates |
48, 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 |
Device presets
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 |
GPIO
| Inputs |
2 General Purpose Inputs (GPI) supporting external contact closure |
| Outputs |
2 General Purpose Outputs (GPO) with internal contact closure |
| Software configurable input control |
Standby state, Mute state, Dual preset recall |
| Software configurable output indication |
Standby state, Mute state, Faults, Ready |
Back panel Interface
| Analog Inputs and Outputs |
4 + 4 XLR |
| AES Inputs and Outputs |
DB-25, with selectable termination |
| Ethernet Ports |
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) |
Front-panel user 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 |
| System status indication |
LED Fault and Warning indication and detailed description on display |
| Parameter adjustment |
Single/multiple parameter edits with rotary encoder |
Power
| Nominal voltage |
100 – 240 VAC |
| Operating voltage |
70-265 V AC |
| Power consumption |
30 W maximum |
Dimensions
| Dimensions |
483 mm (19″), 44 mm (1 U), 290 mm (11.5″) |
Weight
Finish
| Finish |
Black painted steel chassis with cast alumimum handles |
Approvals
| Approvals |
CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC |
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