Lab Gruppen D80:4L

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.

Rational Power Management (RPM)

At the core of the D Series platform is Rational Power Management (RPM), a proprietary Lab.gruppen technology that allows system designers and integrators unprecedented freedom to allocate the output power available on each channel for optimum performance with specific load conditions. RPM technology also enables the integrator to minimize initial equipment costs and reduce rack space requirement since with conventional installation amplifiers, it is often necessary to “over-specify” amplifiers to meet the maximum power demand on one channel, leaving excess power capacity wasted on the remaining channels. RPM reduces costly excess capacity by allowing re-allocation of output power capacity among the four channels - with one channel on the D 80:4L capable of delivering up to 5,000 W power output, leaving any remaining available power to be allocated to the other channels for less demanding loads.

CAFE for Green Credentials

The D 80:4T can be configured and monitored using the new CAFE (Configuring Amplifiers For the Environment) software suite. In addition to providing comprehensive system surveillance and configuration of RPM features, CAFE includes an innovative design aid – the Equipment Specification Predictor (ESP) – that provides tools for optimum specification of D Series units. ESP examines the system and load requirements and then supplies recommendations for the installation that include model and quantity of D Series units, heat generated, channel distribution, and current draw. The end result is accurate mains management and precise specification of cooling systems and UPS, when required.

The Power of Lake Processing

All D Series Lake versions provide extraordinary input flexibility, the legendary power of exclusive Lake processing algorithms, comprehensive control and load monitoring via Lake Controller, and seamless integration into Dante digital audio networks. In addition, by employing third-party middleware, D Series Lake versions can be integrated into on other widely used networked digital matrix systems. All three D Series Lake models incorporate four full-featured Lake Processing modules, with four discrete channels of audio throughput input to output. Audio signals are selectable from four channels of analog (each with exclusive Iso-float ground isolation), four channels of AES3 digital, and eight dual redundant Dante networked digital inputs. Input signals are individually selectable for each channel, with programmable failover to analog. The full-featured, on-board Lake processor includes group control with Raised Cosine™ MESA EQ™ asymmetric filters to match the responses of many loudspeaker systems. LimiterMax™ peak and RMS limiters set the industry standard for loudspeaker protection and sonic transparency.

Model D Series 80:4L

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)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 Yes
Load impedance analysis Yes
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
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 0.00003 %

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) 0.00022 %
THD+N (typical at 20 Hz and 20 kHz unweighted) 0.00033 %

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
Mute Per channel touch button for mute control and bicolored LED for indication
Power Touch button for ON/STANDBY control and bicolored LED for power state indication
Select 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) 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

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
Weight 14.5 kg (32 lbs)
Finish
Finish Black painted steel chassis with grey painted steel front with detachable grille

Approvals
Approvals CE, ETL(ANSI/UL, CSA), PSE, RCM