DISC Lab Gruppen D120:4L Amplifier

Full Description

Lab Gruppen D Series

The Lab Gruppen D series offers total integration of the widest range of digital audio and control protocols, offering powerful and unique benefits and capabilities. The D 120:4L is a highly advanced install-dedicated amplifier, part of Lab Gruppen's powerful D series. Available in two variants, each with three different power models to suit any specific application. The first variation delivers the proven quality of Lake Processing combined with Dante, while the second features the ground breaking collaboration with Biamp Systems for complete integration with their Tesira DSP platform.

The D series is available in 3 different power configurations of 8000 W, 12000 W and 20000 W and also boasts the introduction of Rational Power Management (RPM). This allows for true flexibility of power allocation without any loss of channel count. It is the most efficient use of the amplifiers inventory.

Specifications

• Processing / Network: Lake / Dante
• Number of channels: 4
• Total burst power all channels (share among channels with RP): 12000 W

Max Output Power All Channels Driven

• 2 Ohms (per channel):3000 W
• 2.67 Ohms (per channel):3000 W
• 4 Ohms (per channel):3000 W
• 8 Ohms (per channel):1900 W
• 16 Ohms (per channel):950 W
• Hi-Z 70V (per channel):3000 W
• Hi-Z 70V (per channel):3000 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):175 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 Ohm, 20 Hz - 20kHz):+/- 0.05 dB
• Internal Sample Rate / Data path:48 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:8x8
• 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

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 k/ 10 kO hm
• THD+N (typical at 1 kHz unweighted):0.00022
• THD+N (typical at 20 Hz and 20 kHz unweighted):0.00033

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

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 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 6-20 250 V / 20 A

Power supply features

• Soft start / Inrush power:Yes/ Max 8 Ampere
• Power factor correction:> 0.98 for mains power > 400W
• Regulated switch mode power supply (R.SMPS):Yes
• Breaker Emulation Limiter (BEL):Configurable current threshold and breaker profile
• BEL max current threshold:25 A
• Power Average Limiter (PAL):Yes
• Under Voltage Limiter (UVL):Yes
• Mains undervoltage and overvoltage protection and mains glitch tolerance:Yes

Dimensions

• Dimensions: W: 483 mm (19"), H: 88 mm (2 U), D: 424 mm (16")
• Overall depth front-rear support: D: 463 mm

Weight

• Weight: 15.8 kg (35 lbs)

Finish

• Finish: Black painted steel chassis with grey painted steel front with detachable grille

Approvals

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