The D 80:4L 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 80:4L, 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.

Product Features

• 8,000 Watt amplifier with 4 flexible output channels and up to 5,900 Watts channel output
• Lake digital signal processing for unparalleled loudspeaker management and system control
• Integrated 8x8 channels of dual redundant Dante digital audio networking with AES67 support
• 4 x 2,000 Watts into 2 Ohms, 4 x 2,000 Watts into 4 Ohms, 4 x 1,500 Watts into 8 Ohms, 4 x 750 Watts into 16 Ohms, 4 x 2,000 Watts into Hi-Z 70 V, 4 x 2,000 Watts into Hi-Z 100 V
• Proven and reliable Class-TD output stage with proprietary Intercooler high-efficiency cooling system
• Rational Power Management (RPM) provides total flexibility to allocate available power across all 4 output channels
• Best-in-class Power Factor Correction (PFC) with Current Draw Modelling reduces running costs and minimizes environmental impact
• Under-Voltage Limiting (UVL) for continued operation during severe mains supply voltage drops
• Dedicated on-board surveillance and load monitoring for mass notification applications
• Redundant audio inputs and on-board system surveillance for voice alarm systems
• CAFE (Configuring Amplifiers For the Environment) software for design, system planning, equipment planning, installation and commissioning
• Control and monitoring integration with 3rd-party matrix systems including MediaMatrix and Q-Sys via dedicated interfacing software
• Dedicated front-panel mute buttons for each amplifier channel with bicolour LED indication
• 4 "Lake Class" analog input channels with Iso-Float ground isolation for reliable audio distribution
• 4 input channels of AES/EBU (AES3) digital audio supporting all standard sample rates up to 192 kHz with 24-bit resolution
• 2 Neutrik etherCON RJ-45 ports provide dual redundant Dante interfaces and remote configuration via Lake Controller and Dante Controller software
• Balanced analog and digital audio inputs and amplifier outputs on plug-in Phoenix connectors
• Detachable Neutrik powerCON cable rated at 250 V / 32 A with variety of wall plugs selectable on order
• Removable dust filter grille for increased air circulation and simple maintenance
• Rugged 2U rackmount chassis including rear support brackets for ease of installation

Product Specifications

General

• Processing / Network: Lake / Dante
• Number of amplifier channels: 4
• Total burst power all channels (share among channels with RPM): 8000 W

Max output power (all channels driven)

• 2 ohms: 2000 W
• 2.67 ohms: 2000 W
• 4 ohms: 2000 W
• 8 ohms: 1500 W
• 16 ohms: 750 W
• Hi-Z 70 V: 2000 W
• Hi-Z 100 V: 2000 W

Max output power single channel (all models)

• 2 ohms: 4400 W
• 2.67 ohms: 5900 W
• 4 ohms: 4600 W
• 8 ohms: 2300 W
• 16 ohms: 1150 W
• Hi-Z 70 V: 3300 W
• Hi-Z 100 V: 4700 W

Amplifier output modules (all models, all channels)

• Peak output voltage: 194 V
• Max output Current: 67 A
• Rational Power Management (RPM): Regardless of model, any channel has potential to deliver the max single channel output power (1 channel on D 80:4, 2 channels on D 120:4)
• Default voltage limitation (can be lifted with RPM configuration): 145 Vpk
• Protection features: Current Average Limiter (CAL), Very High Frequency Protection (VHF), Direct Current Protection (DC), Short Circuit Protection, Current-Clip Limiter, Voltage Clip Limiter, Temperature protection

Amplifier platform

• Inter Sample Voltage Peak Limiter (ISVPL): Configurable Peak voltage threshold and profile
• Amplifier gain: Digital configurable amplifier gain 22 - 44 dB
• Dynamic range: > 112 dB
• Load impedance analysis: Yes
• Temperature control: Temperature regulated fans (front-to-rear airflow) and show must go on limitation (ATL, PTL)
• Internal Sample Rate / Data path: 96 kHz / 32 bit floating point
• Product propagation delay AES 96 kHz / analog input: 1.61 / 1.68 ms

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

AES Inputs

• Inputs: 2 AES inputs (4 audio channels)
• Supported sample rates / resolution: 44.1, 48, 88.2, 96, 176.4, 192 kHz / up to 24 bits
• Sample rate conversion THD+N 20 Hz - 20 kHz unweighted: 0.0000003

Analog Inputs

• Inputs: 4 high quality inputs with Iso-Float ground isolation
• Maximum input / digital reference: +26 dBu / +21 dBu
• Sampling rate / Resolution: 96 kHz / 24 bit
• THD+N (typical at 1 kHz unweighted): 0.0000022
• THD+N (typical at 20 Hz and 20 kHz unweighted): 0.0000033

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 / 76 A (exceeding amplifier capacity) Can take up to 16 mm2 (6 AWG) cables
• Ethernet Ports: 2 x EtherCon RJ45 100/1000 Base-T for the Lake Controller, Dante controller and/or DLM (3rd party protocol)
• Detachable mains cord: Neutrik PowerCon rated at 250V/32A

Front-panel user interface

• System status indication: 3 x 3 colored LED. FRAME, TEMP, PSU for device status indication
• Channel status indication: 3 x 3 coloured LED per channel. Status indication separated for channel LOAD, AMP, SIGNAL status
• Mute: Per channel touch button for mute control and bicoloured LED for indication
• Power: Touch button for ON/STANDBY control and bicoloured LED for power state indication
• Select: Touch button and LED for bidirectional Device -Software select functionality

Physical & Dimensions

• Rack rail to rear panel: W: 483 mm (19”), H: 88 mm (2 U), D: 424 mm (16”)
• Overall depth front-rear support: D: 463 mm
• Weight: 14.5 kg (32 lbs)
• Finish: Black painted steel chassis with grey painted steel front with detachable grille