Lake Audio LMX 48 - Audio System Processor for Loudspeaker Management with 4 x 8 Analog/Digtal I/O and 8 x 8 Dante Networked I/O in Black Finish

The Lake Audio LMX 48 is a powerful audio system processor specifically designed for comprehensive loudspeaker management in demanding environments. This versatile unit offers an extensive array of input and output options, including 4 x 8 analog I/O, 4 x 8 AES3 digital I/O, and 8 x 8 Dante networked I/O, making it ideal for complex signal routing and management in both live and studio applications. With the ability to integrate seamlessly into various audio systems, the LMX 48 is an indispensable tool for users seeking flexibility, redundancy, and precise control over their audio signal processing.

One of the standout features of the LMX 48 is its extensive signal routing capabilities. It supports up to 38 audio input channels and 44 output channels, all directly routable. The unit incorporates 16 independent input routers, each with up to four failover priority levels, ensuring that any input loss is swiftly handled through seamless failover to backup signals. This feature is particularly valuable for mission-critical applications where uninterrupted audio performance is essential. The 16 input routers can be matrix-mixed into 8 LAKE MESA or 4 LAKE CONTOUR channels, providing a wealth of flexibility when combining multiple signals or processing them for output.

Another key advantage of the LMX 48 is its high-performance sample rate conversion. With dedicated low-latency sample rate converters for each input, the unit allows for the connection of multiple non-synchronized digital sources, eliminating common issues encountered with traditional digital audio systems. This flexibility is enhanced by the inclusion of Lake's proprietary processing capabilities, including raised cosine equalization, FIR crossover filters, and multiband/limiter compressors, which provide ultimate sound-shaping and optimization. The LMX 48 also supports a range of audio processing modules, such as Mesa, Contour, and XP, enabling users to customize their system to meet specific requirements.

For ease of use, the LMX 48 integrates fully with the Lake Controller software, allowing users to control and optimize the system via a touch-screen interface. The software offers enhanced functionality, including the ability to recall preset "Scenes" for quick system configuration. The LMX 48's robust design is complemented by dual redundant internal power supplies, ensuring reliable operation even in case of a power failure. The unit can be configured for dual-redundant operation, allowing it to seamlessly switch between primary and secondary inputs, or use backup power sources if one supply fails. Its 1U rackmount chassis makes it ideal for both portable and permanent installations, and it is built to withstand the rigors of live sound environments.

The LMX 48 is designed for seamless integration into a wide range of professional audio setups, particularly those requiring high channel count and low-latency performance. Whether used for large-scale live events, broadcast, or studio production, the LMX 48 offers unparalleled flexibility and reliability, making it an essential tool for serious audio engineers and system integrators.

Features

• Supports up to 38 input channels and 44 output channels, directly routable for flexibility
• 16 input routers with four failover priority levels for seamless input switching
• Flexible signal routing with the ability to matrix-mix input routers into 8 LAKE MESA or 4 LAKE CONTOUR channels
• Dedicated high-performance, low-latency sample rate converters for each input, supporting multiple non-synchronized digital sources
• Supports a range of audio processing modules including raised cosine equalization, FIR crossover filters, and multiband/limiter compressors
• Integrates fully with Lake Controller software for easy control and optimization
• Supports Dante, AES3, and AES50 I/O for extensive connectivity options
• Dual-redundant internal power supplies with auto-switching for added reliability
• Can be configured for dual-redundant operation and backup power sources
• 1U rackmount chassis for easy integration into professional audio setups
• Works with up to 4 MESA and 2 CONTOUR modules for comprehensive processing
• Supports 24-bit, 96 kHz audio performance with up to 12 processed outputs
• Front-panel LCD display for easy monitoring and control
• Supports AES50 dual 24x24 channels for seamless low-latency audio transfer between units
• Multiple clock sources with selectable synchronization options, including Dante, AES50, and external word clock

Specifications

Front-Panel User Interface

• Display: Daylight readable full color IPS (320 x 210), Fault/Warning detailed description on display
• Menu: Intiutive interface with ability to recall Scene- and Frame Preset, Frame Config, see IP address, Mains status
• Meters and Mute buttons: 16x LED meters and clip indicators, with individual mute of inputs or outputs with dedicated buttons

Lake Features

• Module configuration: 8x MESA, 4x Contour or 2x Contour/4x MESA modules
• Processing channels: 12x in Contour, 8x in MESA, 10x in Contour/MESA
• Block program: Mesa, XP, Linear phase, Classic crossovers and Auxililary
• Input routers: 16 input routers with 4 priorities in each, seamless fallback to lower prioritizes
• Module Input mixer: 16 ch. for Contour-, 16 ch. for MESAmodules. Mix any ratio between all input routers.
• Link ability: Yes, via 24 channels of AES50
• Input Processing: Parameteric EQ with MESA and Ideal Graphic equalizers, both utilizing Raised Cosine algorithms
• Output Processing: Crossovers with up to 48dB/oct. Parametric EQ, shelving and allpass filters, FIR
• Features: Delay, Mute, Phase, Gain etc.
• Limiters: LimiterMax with Peak and RMS limiter
• SuperModule compatible: No

Audio Performance

• Conversion Resolution: 24-bit
• Internal Sample Rate: 96 kHz
• Internal Floating Path: 32-bit floating point
• Product Propagation Delay: Best case (AES syncronous 96 kHz to AES syncronous 96 kHz via DSP) 0.872 ms Analog (Analog in to Analog out via DSP) 1.036 ms Pass thru (Analog in to AES syncronous 96 kHz bypassing DSP 0.143 ms
• Maximum Available User Delay: 2 seconds from any input to any output

Analog

• Inputs: 4x inputs with Iso-Float ground isolation configurable (connectors shared with AES3 inputs)
• Outputs: 8x outputs (connectors shared with AES3 Outputs)
• Frequency Response, analog-to-digital: +/-0.05 dB, 20 Hz to 20 kHz
• Frequency Response, digital-to-analog: +/-0.2 dB, 20 Hz to 20 kHz
• THD+Noise, Inputs: 0.0015% typical at 1 kHz
• THD+Noise, Outputs: 0.0008% typical at 1 kHz
• Dynamic Range, Inputs: 126 dB
• Dynamic Range, Outputs: 116 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: +21 dBu
• Maximum Output level: +21 dBu
• Crosstalk, inputs: -108 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 with Sample Rate Converts available

• Inputs and Outputs: 4x inputs, 8x outputs (shared with Analog)
• ASRC: Yes, high quality low latency available per digital input
• Supporting Sample Rates: 44.1 kHz, 48 kHz, 88.1 kHz, 96 kHz, 176.4 kHz, 192 kHz (I/O individually selected)
• Supported Resolutions: Up to 24-bit
• THD+Noise (limits): -135 dB at 96kHz and -125 dB at 44.1 kHz sample rate
• THD+Noise (typical): -145 dB at 96kHz and -138 dB at 44.1 kHz sample rate
• Dynamic Range: Base48 -144 dBFS, Base44 -142 dBFS

Internal clock

• Oscillator type: High quality VCXO clock
• Syncronization: Can syncronize to any digitial input and output any input clock on any output
• Synchronous / Asynchronous: Yes / Yes
• Base48: x3
• Base44: x2
• Clock accuracy: <± 7 ppm
• Pull up/down: ±80ppm from any sample rate
• Word clock: Syncronize internal clock, and output any clock

Dante (Audio Network)

• Topology: Brooklyn 3
• Inputs (shared with AES 67): 8x
• Outputs (shared with AES 67): 8x
• Supported Sample Rates: 48 kHz, 96 kHz
• Casting: Unicast or Multicast
• Support Redundant paths: Yes, Dante Dual Redundancy (Glitch-free Dante audio Redundancy using dual Ethernet networks)
• Receiver latency: 0.25 ms, 0.5 ms, 1 ms, 2 ms, 5 ms
• Network: 4x 1000 Base-T / 100 Base-Tx (shared with AES 67)

AES67 (Audio Network)

• Topology Brooklyn 3
• Inputs (shared with Dante): 8x
• Outputs (shared with Dante): 8x
• Supported Sample Rates: 48 kHz
• Casting: Multicast
• Support Redundant paths: No
• Receiver latency: 1 ms
• Network: 4x 1000 Base-T / 100 Base-Tx (shared with AES 67)

AES50 (Audio Network)

• Interfaces: 2x AES50 interfaces
• Inputs: 24x channels can be individually selected out of up to 96 channels
• Outputs: 24x channels
• Supported Sample Rates: 48 kHz, 96 kHz
• Support Redundant paths: Yes, via Mirror mode using both AES50 interfaces

GPI

• Inputs: 4x General Purpose Inputs (GPI) supporting external contact closure
• Software configurable input control: Standby state, Mute state, Dual preset recall, Scene preset recall, Force input router prio

Device presets

• Frame presets: 100
• Scene presets: 10

Power supply features

• Mains connectors: 2x Locking IEC
• Universal: Yes
• Semless continued operations if mains lost on one PSU: Yes

Power requirements

• Nominal Voltage: 100-240VAC
• Operating Voltage: 90-264 VAC
• Power consumption: 75 W maximum

Backpanel Interface

• Analog inputs and outputs: 4x8 where Inputs and Outputs can be configured for either Analog or AES3 operation
• AES3 inputs and outputs: 2x4 where Inputs and Outputs can be configured for either Analog or AES3 operation for 4x8 channels of AES3
• Ethernet (Dante, AES67 and Control): Auto 100/1000, Auto uplink, 3x RJ45 connectors
• Ethernet with PoE+: Auto 100/1000, Auto uplink, 1x RJ45 connectors with PoE+ (802.3at) out
• AES50: 2x RJ45 connectors
• GPI: GPI via 1x RJ45 connectors
• Word Clock Input and output: 2x female BNC with selectable termination on input
• Power: 2x Detachable Locking 3-pin IEC
• Control and monitoring interface: Ethernet for Lake Controller software, or DLM (the 3rd Party Protocol)
• Cooling: 2x fans, front-to-rear airflow

Physical

• Dimensions (WHD): 19 x 1.75 x 16 inches
• Weight: 11.2 lbs
• Finish: Black painted steel chassis with alumimum handles
• Approvals: CE, NRTL (ANSI/UL 62368-1 & CSA C22.2#62368-1), FCC, ICES, PSE, UKCA, RCM
• Warranty: 3 years, componants and factory workmanship; see full warranty statement