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Lab Gruppen D 40:4L
Lake Amplifier, 4000 W of Flexible Power and Dante Digital Audio Networking

OUR PART #:  D40-4L

The Lab Gruppen D 40:4L is based on the same foundation of robust...
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The Lab Gruppen D 40:4L is based on the same foundation of robust, high-power amplifier technologies as our renowned PLM Series – an amplifier platform with a proven record of reliability and sonic performance on the world’s most grueling concert tours and in high-profile, large-scale installations.

With the D 40:4L, those same core technologies have been updated and refocused to provide the ultimate solution for the most demanding digitally networked installed sound applications – in stadia, arenas, theme parks, performing arts centers, racecourses and other large commercial sound installations.

In addition to legendary Lab.gruppen reliability and sonic excellence, the D Series incorporates newly refined outputs stage technologies along with installation-targeted hardware and software features that optimize amplifier system design and configuration. Together, these new technologies allow systems integrators to minimize both initial equipment costs and end users’ long-term energy consumption.

Lab Gruppen D 40:4L Features:

  • Rational Power Management™ (RPM) – True flexibility in allocating total available power output across channel count for most efficient use of system inventory
  • Any channel capable of being significantly scaled up for driving high power elements (e.g. subwoofers)
  • Lake processing Classic/linear-phase/FIR speaker processing platform with 4 throughputs
  • Input with multitude of automatic redundancy
  • (4) “Lake class” analog inputs with Iso-Float™ ground isolation
  • (4) AES inputs
  • (8) Dual Redundant Dante™ inputs
  • Integration potential with 3rd party matrix systems including BSS, Q-SYS and MediaMatrix via purpose developed middleware
  • CAFÉ (Configuring Amplifiers For the Environment) Software incorporating ESP (Equipment Specification Predictor) for design, system planning and equipment planning, installation and commissioning.
  • Regulated Switch-Mode Power Supply (R.SMPS™)
  • Breaker Emulation Limiter (BEL™) to prevent power interruption
  • Under-voltage Limiting (UVL™) for continued operation despite severe voltage drops
  • Best-in-class Power Factor Correction (PFC) with Current Draw Modelling
  • Proven and reliable IDEEA Class D Output Stage with direct drive 70 and 100 V constant voltage systems as well as low impedance
  • Dedicated on-board surveillance & load monitoring system
  • Redundant audio inputs and onboard system surveillance for mission-critical Voice Alarm applications (PA/VA)
  • Detachable Phoenix plug-in audio connectors for audio I/O

Lab Gruppen D 40:4L Specifications:

  • Processing / Network: Lake / Dante
  • Number of amplifier channels: 4
  • Total burst power all channels (share among channelswith RPM): 4000 W
  • Lake processing:
    • Loudspeaker processing: Up to 4 modules of Classic/linear-phase/FIR crossover, EQ, delay, LimiterMax™ - peak and RMS limiters
    • System tuning: Group control with Raised Cosine™ MESA EG™ asymmetric filters
    • Input redundancy / Matrix: Automatic 4 level input redundancy / 4 input mixers
    • System integration: Comprehensive 3rd party protocol over UDP Ethernet
  • Dante Audio Network:
    • Dante I/O 8 x 8
    • Network topology / redundancy: Flexible topology / Supports daisy-chained and Dual redundant networks
    • Sample Rates / Transport: 48, 96 kHz / Uni + Multicast
    • Network latency: 0.25, 0.5, 1.0, 2.0, 5.0 ms
  • Back panel Interface:
    • Analog inputs: 4 x Terminal block connectors analog input with +, - and ground
    • AES inputs: 4 x Terminal block connectors analog input with +, - and ground
    • Output connectors: 4 x 2 pole Terminal block connectors rated at 1000 V / 41 A (exceeding amplifier capacity)
      • Can take up to 8 mm2 (8.2 AWG) cables
    • Ethernet Ports: 2 x EtherCon RJ45 Lake Controller, Dante controller and/or DLM (3rd party protocol)
    • Detachable mains cord: Detachable locking 3-pin IEC rated at 250 V / 16 A
  • Front-panel user interface:
    • System status indication: 3 x tri-color LED. FRAME, TEMP, PSU for device status indication
    • Channel status indication: 3 x tri-color LED per channel. Status indication separated for channel LOAD, AMP, SIGNAL status
    • Mute: Per channel touch button for MUTE control and tri-color LED for indication
    • Power: Touch button for ON/STANDBY control and tri-color LED for power state indication
    • Select: Touch button and LED for bidirectional device software select functionality
  • Dimensions:
    • Rack rail to rear panel: W: 483 mm (19”), H: 44 mm (1 U), D: 425 mm (16.7”)
    • Overall depth front-rear support: D: 463 mm
  • Weight: 8.3 kg (18.3 lbs)
  • Finish: Black painted steel chassis with grey painted steel front withdetachable grille

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