Lab Gruppen D 80:4L - 2000W 4-Channel at 4-Ohm 70V/100V Power Amplifier with Lake DSP and Dante Audio Networking in Black Finish

The Lab Gruppen D 80:4L is a 2000W, 4-channel power amplifier designed for demanding sound installations, such as in stadia, arenas, convention centers, and other large-scale venues. With a powerful combination of Lake DSP (Digital Signal Processing) and Dante digital audio networking, the D 80:4L is perfect for environments that require high-quality audio performance, exceptional flexibility, and seamless integration into complex audio systems. The D Series amplifiers leverage Lab Gruppen's renowned technologies to ensure reliable performance, ease of use, and efficient power management for large, professional audio setups.

One of the standout features of the D 80:4L is its Lake DSP, which provides advanced loudspeaker management and system control. The DSP allows for precise tuning of audio signals, including EQ adjustments, crossover settings, and delay configurations, to optimize the system for both speaker performance and room acoustics. The D 80:4L's Lake DSP also supports LimiterMax, a peak and RMS limiter, ensuring that the audio remains within safe operating parameters even under challenging conditions. With this DSP technology, the amplifier can meet the needs of large-scale audio installations that demand both power and precision.

The D 80:4L incorporates dual-redundant Dante audio networking with AES67 support, providing high-quality, low-latency audio transport over standard IP networks. Dante networking allows for flexible system configuration and integration, especially in large venues where multiple audio sources need to be managed. This amplifier supports both analog and digital audio inputs, with four analog inputs featuring Iso-Float ground isolation and four AES/EBU digital audio inputs that support up to 192 kHz with 24-bit resolution. This versatility ensures the D 80:4L can be seamlessly integrated into a wide variety of systems and workflows.

Power management in the D 80:4L is driven by Rational Power Management (RPM), a Lab Gruppen technology that optimizes power distribution across all four output channels. This allows for more efficient use of available power, ensuring that the system runs effectively even with demanding loads. The amplifier delivers up to 2000W per channel at 2Ω, 2.67Ω, and 4Ω, and can also operate at 70V and 100V for constant voltage applications, making it suitable for both low-impedance and high-impedance speaker systems. The D 80:4L also supports bridged mode, providing 4000W at 4Ω and 8Ω, which is ideal for applications requiring additional power headroom.

The D 80:4L's Class-TD output stage ensures high efficiency with minimal heat production, and the proprietary Intercooler cooling system enhances its cooling performance, making it suitable for continuous operation in high-power environments. With advanced protection features, including current average limiting (CAL), very high-frequency protection (VHF), short circuit protection, and temperature protection, the D 80:4L is designed for reliable, long-term operation. The Breaker Emulation Limiter (BEL) is particularly useful in preventing circuit breaker tripping by controlling the amplifier's current draw, while Under-Voltage Limiting (UVL) ensures continued operation even when mains voltage drops significantly.

Designed for easy integration, the D 80:4L includes a 2U rackmount chassis with rear support brackets, making it simple to install in standard 19" racks. The amplifier also features detachable mains cables with various wall plugs selectable upon order, and a removable dust filter grille for improved airflow and ease of maintenance. With a rugged build and a sleek, professional black finish, the D 80:4L is engineered to deliver superior performance while seamlessly blending into any environment.

The D 80:4L offers enhanced control and monitoring via Lab Gruppen's CAFe software, allowing for efficient system planning, commissioning, and ongoing monitoring of the amplifier's performance. The front panel includes tri-color LED indicators for system and channel status, as well as mute buttons for each channel, making it easy to control the amplifier's operation during use. Additionally, the amplifier is compatible with third-party matrix systems such as MediaMatrix and Q-Sys via dedicated interfacing software, allowing for easy integration into larger, more complex audio systems.

Features

• 4-channel amplifier delivering up to 2000W per channel at 2Ω, 2.67Ω, 4Ω, 70V, and 100V
• Lake DSP technology for advanced loudspeaker management and system control with crossovers, EQ, delay, and LimiterMax peak and RMS limiters
• Dual-redundant Dante digital audio networking with AES67 support for seamless integration into IP-based audio systems
• Rational Power Management (RPM) for optimal power distribution across all channels
• Class-TD output stage with Intercooler cooling system for high efficiency and minimal heat production
• Best-in-class Power Factor Correction (PFC) to reduce energy costs and environmental impact
• Breaker Emulation Limiter (BEL) and Under-Voltage Limiting (UVL) for reliable operation and protection
• Supports analog and AES/EBU digital audio inputs with Iso-Float ground isolation for noise-free audio distribution
• Detachable mains cable and removable dust filter grille for ease of maintenance and improved airflow
• 2U rackmount chassis with rear support brackets for easy installation
• Dimensions: 19 x 3.50 x 16 inches; weight: 32 lbs
• Approvals: CE, ETL (ANSI/UL, CSA), PSE, RCM, BIS, CCC certified

Specifications

General

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

Maximum 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

Maximum Output Power Bridged Mode (all channels driven) 

• 4 ohms: 4000 W
• 8 ohms: 4000 W
• 16 ohms: 3000 W

Maximum 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): Yes
• 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
• Amplifier gain: Digital configurable amplifier gain 22 - 44 dB
• Pilot tone generation and analysis: Yes
• Load impedance analysis: Yes
• Temperature control: Regulated fans and show must go on limitation (ATL, PTL)

Audio Performance (Amplifier Platform with Digital Input)

• THD + N 20 Hz - 20 kHz for 1 W: < 0.05%
• THD + N at 1 kHz and 1 dB below clipping: < 0.04%
• Dynamic range: > 114 dB
• Channel separation (Crosstalk) at 1 kHz: > 70 dB
• Frequency response (1 W into 8 ohms, 20 Hz - 20 kHz): +/- 0.05 dB
• 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 EQ 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 (shared with AES67)
• Network topology / redundancy: Flexible topology / Supports daisy-chained and Dual redundant networks
• Sample rates / transport: 48, 96 kHz / Unit / Multicast
• Network latency: 0.25, 0.5, 1.0, 2.0, 5.0 ms

AES67 Audio Network

• I/O: 8x8 (shared with Dante)
• Network topology / redundancy: Flexible topology / supports daisy-chained networks
• Sample rates / transport: 48 kHz / Multicast
• Network latency: 2 ms

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
• Input impedance balanced / unbalanced: 20 kΩ / 10 kΩ
• THD + N (typical at 1 kHz unweighted): 0.000022%
• THD + N (typical at 20 Hz and 20 kHz unweighted): 0.000033%

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 bit
• Sample rate conversion THD + N 20 Hz - 20 kHz unweighted: 0.00003%

Rear Panel Interface

• Analog inputs: 4 x Terminal block connectors along input with +, - and ground
• AES inputs: 2 x Terminal block connectors
• 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 10/1000 Base-T for the Lake Controller, Dante controller and/or DLM (3rd party protocol)
• Detachable mains cord: Neutrik PowerCon rated at 250 V / 32 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 bi-directional device software select functionality

Mains Power

• Nominal voltage: 100 - 240 V AC 50 - 60 Hz
• Operating voltage: 70 - 265 V AC 45 - 66 Hz
• 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 (D120:4 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-80P 125V / 30A (Japan)

Power Supply Features

• Soft start / Inrush power: Yes / Max 8 A
• Power factor correction: > 0.98 for mains power > 300 W
• Regulated switch mode power supply (R.SMPS): Yes
• Breaker Emulation Limiter (BEL): Configurable current threshold and breaker profile
• BEL max current threshold: 15 A
• Power Average Limiter (PAL): Yes
• Under Voltage Limiter (UVL): Yes
• Mains undervoltage and overvoltage protection and mains glitch tolerance: Yes

Physical

• Dimensions:
  • Rack rail to rear panel (WHD): 19 x 3.50 x 16 inches
  • Overall all depth front-rear support: 18.22 inches
• Weight: 32 lbs
• Finish: Black painted steel chassis with grey painted steel front with detachable grille
• Approvals: CE, ETL (ANSI/UL, CSA), PSE, RCM, BIS, CCC