LAB GRUPPEN D 80:4L_US2 8000W Amplifier with 4 Flexible Output-Channels, Lake Digital Signal Processing, and Digital Audio Networking for Installation Applications (D 80:4L)

Vendor: Lab Gruppen
LAB GRUPPEN D 80:4L_US2 8000W Amplifier with 4 Flexible Output-Channels, Lake Digital Signal Processing, and Digital Audio Networking for Installation Applications (D 80:4L) The D 80:4L brings together 8000 watts of adaptable power...

LAB GRUPPEN D 80:4L_US2 8000W Amplifier with 4 Flexible Output-Channels, Lake Digital Signal Processing, and Digital Audio Networking for Installation Applications (D 80:4L)

The D 80:4L brings together 8000 watts of adaptable power along with cutting-edge Lake DSP, DANTE digital audio networking, and advanced system integrity monitoring.

Legendary Technology and Power

The D 80:4L builds upon the established foundation of high-power amplifier technologies seen in our prestigious PLM Series. Renowned for reliability and sonic excellence during intense concert tours and in major installations worldwide, these core technologies have been enhanced and tailored for the most demanding digitally networked sound applications. Beyond Lab Gruppen's legendary reliability and sound quality, the D Series integrates refined output stage technologies and installation-focused hardware and software features. This amalgamation of innovations streamlines amplifier system design and configuration, empowering systems integrators to reduce initial equipment costs and long-term energy consumption for end users.

Rational Power Management (RPM)

Rational Power Management (RPM), a proprietary technology by Lab Gruppen, lies at the heart of the D Series platform. It grants unprecedented flexibility to system designers and integrators by allowing them to optimize each channel's output power for precise performance under specific load conditions. RPM not only minimizes initial equipment costs but also addresses the challenge of excessive power wastage on conventional amplifiers. Typically, these amps are "over-specified" to meet the maximum power demand of one channel, resulting in wasted power capacity across the remaining channels. RPM resolves this by reallocating power capacity among the four channels, allowing a single channel on the D 80:4T/Ta to output up to 5000 W. This leaves any remaining power to be efficiently allocated to less demanding channels, effectively utilizing available resources.

CAFE for Green Credentials

The D 80:4T offers versatile configuration and monitoring through the innovative CAFE (Configuring Amplifiers For the Environment) software suite. Alongside comprehensive surveillance and configuration of Rational Power Management (RPM) features, CAFE introduces the Equipment Specification Predictor (ESP). This advanced tool assesses system and load requirements, providing tailored recommendations for the installation, including optimal model and quantity of D Series units, heat generation, channel distribution, and current draw. Ultimately, it ensures accurate mains management and precise specifications for cooling systems and UPS as needed.

The Power of Lake Processing

The D Series Lake amplifiers offer unparalleled input flexibility and the renowned power of exclusive Lake processing algorithms. They provide comprehensive control and load monitoring through the Lake Controller, seamlessly integrating into Dante digital audio networks. These models support integration into other popular networked digital matrix systems using third-party middleware. Equipped with four full-featured Lake Processing modules and four discrete audio throughput channels, they offer a wide range of selectable audio signals: four channels of analog (each with exclusive Iso-float ground isolation), four channels of AES3 digital, and eight dual redundant Dante networked digital inputs. Each channel allows individual signal selection, with programmable failover to analog, while the onboard Lake processor features group control with Raised Cosine™ MESA EQ™ asymmetric filters, ensuring compatibility with various loudspeaker systems. The LimiterMax™ peak and RMS limiters establish an industry benchmark for loudspeaker protection and sonic clarity.

Rational Power Management

RPM grants unparalleled flexibility in distributing the available 8000 W power among the four channels of the D 80:4 amplifier, ensuring optimal utilization of the amplifier inventory. A single channel can handle up to 5000 W without the need for bridging, leaving surplus power to be assigned across other channels as needed. This configuration equips the D 80:4 to meet the demands of nearly all high-powered performance installations, except those that require the most extreme power consumption.

Lake Processing with DANTE

The resilient power foundation of the D Series seamlessly integrates with the inclusion of dual-integrated Lake Processing modules. These modules embody essential Lake functionalities like Raised Cosine Equalization™, Limiter Max™ peak and RMS limiters, and Iso-Float™ ground isolation. Standard features also include AES3 digital and dual-redundant Dante networked inputs, ensuring compliance and reliability for mission-critical PA/VA applications.

Real World Green Credentials

The integration of exclusive power supply technologies, ensuring top-notch and predictable low current utilization for power output, alongside groundbreaking CAFE software, enhances mains control. This innovative setup facilitates substantial cost savings on essential infrastructure like cooling and UPS systems, effectively reducing the overall setup and operational expenses of a venue's audio system.


  • 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 bicolor 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 a 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

Processing / Network

Lake / Dante

Number of amplifier channels


Total burst power all channels (share among channels with RPM)

8000 W

Max output power (all channels driven)1
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)1
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)

155 V

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

THD + N at 1 kHz and 1 dB below clipping

< 0.04 %

Pilot tone generation and analysis


Load impedance analysis


Frequency response (1 W into 8 Ohm, 20 Hz - 20 kHz)

+/- 0.05 dB

Internal Sample Rate / Data path

48 / 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

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


Analog 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)


THD+N (typical at 20 Hz and 20 kHz unweighted)


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 colored LED per channel. Status indication separated for channel LOAD, AMP, SIGNAL status


Per channel touch button for mute control and bicolored LED for indication


Touch button for ON/STANDBY control and bicolored LED for power state indication


Touch button and LED for bidirectional Device -Software select functionality

Mains Power
Nominal voltage

100 - 240 Volt AC 50 - 60 Hz

Operating voltage

70-265 V AC

Mains wall plug

Selectable on order CEE 7/7 “Schuko” 230 V / 16 A NEMA L5-30 “Twistlock” 125 V / 30 A NEMA 5-15P 125 V / 15 A (D 80:4 only) NEMA 5-20P 125 V / 20 A (D 120:4 only) NEMA 6-20P 250 V / 20 A AS/NZS 3112 230 V / 15 A (Aus/Nz) BS 546 230 V / 16 A (India) C-30P 125 V / 30 A (Japan)

Power supply features
Soft start / Inrush power

Yes/ Max 8 Ampere

Power factor correction

> 0.98 for mains power > 400 W

Regulated switch mode power supply (R.SMPS)


Breaker Emulation Limiter (BEL)

Configurable current threshold and breaker profile

BEL max current threshold

15 A

Power Average Limiter (PAL)


Under Voltage Limiter (UVL)


Mains undervoltage and overvoltage protection and mains glitch tolerance


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


14.5 kg (32 lbs)


Black painted steel chassis with grey painted steel front with detachable grille