Lake LM 26 Loudspeaker Management System

The LM 26 provides a two-input/six-output analog configuration suited for multi-way loudspeaker crossover, delay, and EQ functions. The LM 26 also provides 4 × 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 26 units may be stacked and linked to function as a 4 × 12 processor.

LM 26 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.

In all situations, the LM 26 constantly monitors the network and all active inputs to detect active audio signals, valid digital clocks, and valid network integrity. If problems are detected, automatic input priority switching ensures the show continues.

LAKE Processing
The advanced technology of LAKE Processing provides unparalleled power to shape and optimize sound in a variety of environments, regardless of loudspeaker system,
the venue size or acoustics, or the program material.

Specification
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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
Raised Cosine Mesa and Ideal Graphic input equalizers

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. Configurable MaxRMSLevel, MaxRMSCorner, MaxRMSAttack

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) 1.039 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
2 inputs, 6 outputs

Frequency response, digital-to-analog
+/-0.03 dB, 20 Hz to 20 kHz

Frequency response, analog-to-digital
+/-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

Common Mode Rejection (CMR)
-74 dB, 20 Hz to 20 kHz

Crosstalk, inputs
-98 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
Yes

Flexible topology
yes

Device presets
Frame presets
100

AES Inputs
Inputs and Outputs
4 inputs, 8 outputs

Supported resolutions
Up to 24-bit

Supported sample rates
44.1, 48, 88.2, 96, 176.4, 192 kHz

Termination
Selectable

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

Ethernet
Gigabit Ethernet
1000 Base-T

Fast Ethernet
100 Base-Tx

Back panel Interface
Analog Inputs and Outputs
2 + 6 XLR

AES Inputs and Outputs
DB-25, with selectable termination

Ethernet Ports
Dual Neutrik® etherCON®

GPIO
DB-9

Power
Detachable locking 3-pin IEC

Control and monitoring interface
Via Ethernet for Lake Controller software

Front-panel user interface
Display
Daylight readable monochrome (128 x 64)

Meters
LED for signal level and clip indicators per channel

LED Fault and Warning indication
Yes

Parameter adjustment
Single/multiple parameter edits with rotary encoder

Standby Power button
On/Standby

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
Weight
5 kg (11 lbs)

Finish
Finish
Black painted steel chassis with cast aluminum handles