Introduction

D SERIES D 20:4L

D 20:4L Combines 2000 W of Flexible Power with the Latest LAKE DSP, DANTE Digital Audio Networking and Advanced System Integrity Monitoring.

Features

2,000 Watt amplifier with 4 flexible output channels and up to 1,600 Watts channel output
Lake digital signal processing for unparalleled loudspeaker management and system control
Réseau audio numérique Dante à double redondance intégré 8×8 canaux avec support AES67
4 x 500 Watts into 2 Ohms, 4 x 500 Watts into 2.67 Ohms, 4 x 500 Watts into 4 Ohms, 4 x 500 Watts into 8 Ohms, 4 x 425 Watts into 16 Ohms, 4 x 500 Watts into Hi–Z 25 V, 4 x 500 Watts into Hi–Z 70 V, 4 x 250 Watts into Hi–Z 100 V
Proven and reliable IDEEA Class D Output Stage with direct drive 70 and 100 V constant voltage systems as well as low impedance
Rational Power Management (RPM) provides total flexibility to allocate available power across all 4 output channels for most efficient use of system inventory
Best–in–class Power Factor Correction (PFC) and switch mode power supply reduces running costs and minimizes environmental impact
Breaker Emulation Limiter (BEL) with configurable mains current draw threshold and breaker profile to safeguard mains breakers from tripping
Configurable Auto Power Down and Adaptive Rail Control enables real world lifetime energy savings
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 canaux d’entrée analogiques ″Lake Class″ avec isolation de masse Iso–Float pour une distribution audio fiable
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 and locking IEC mains cable rated at 250 V / 16 A with variety of wall plugs selectable on order
Removable dust filter grille for increased air circulation and simple maintenance
Rugged slimline (1U) rackmount chassis including rear support brackets for ease of installation
Designed and engineered in Sweden

Technical sheet

Specification

General

Processing / Network	Lake / Dante
Number of amplifier channels	4
Total burst power all channels (share among channels with RPM)	2000 W

Max output power (all channels driven)1

2 ohms	500 W
2.67 ohms	500 W
4 ohms	500 W
8 ohms	500 W
16 ohms	425 W
Hi–Z 25 V	500 W
Hi–Z 70 V	500 W
Hi–Z 100 V	250 W

Max output power single channel (all models)1

2 ohms	850 W
2.67 ohms	1150 W
4 ohms	1600 W
8 ohms	1100 W
16 ohms	600 W
Hi–Z 25 V	500 W
Hi–Z 70 V	1400 W
Hi–Z 100 V	1000 W

Amplifier output modules (all models, all channels)

Peak output voltage	142 Vpk
Max output Current	30 Apk
Rational Power Management (RPM)	Partagez librement la ″puissance totale en rafale″ du produit entre les canaux. Tout canal peut monter jusqu’à la ″puissance max canal unique″
Default voltage limitation (can be lifted with RPM configuration)	100 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	Ventilateurs régulés par température (flux d’air avant–arrière) et limitation ″show must go on″ (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	4 AES inputs
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

Analogue 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 / 10 kOhm
THD+N (typical at 1 kHz unweighted)	0.0000022
THD+N (typical at 20 Hz and 20 kHz unweighted)	0.0000033

Back panel Interface

Analogue 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 / 41 A (exceeding amplifier capacity) Can take up to 8 mm2 (8.2 AWG) cables
Ethernet Ports	2 x EtherCon RJ45 Lake Controller, Dante controller and/or DLM (3rd party protocol)
Detachable mains cord	Detachable locking 3–pin IEC rated at 250 V / 16 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 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 5–15 125 V / 15 A, BS1363–A 250 V / 13 A, IA16A3 250 V / 16 A, AU/NZ 250 V / 10 A, JP 125 V / 15 A, CPCS–CCC 250 V / 10 A

Power supply features

Soft start / Inrush power	Yes
Power factor correction	> 0.98 pour alimentation secteur > 300 W
Regulated switch mode power supply (R.SMPS)	Yes
Breaker Emulation Limiter (BEL)	No
BEL max current threshold	Fixed 8 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: 44 mm (1 U), D: 425 mm (16.7”)
Overall depth front–rear support	D: 463 mm

Weight

7.9 kg (17.3 lbs)

Finish

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

Downloads:

DRAWINGS:

Front CAD Drawings Rear CAD Drawings Revit Drawings

SOFTWARE:

CAFÉ Software (MAC) Version 1.5.6 CAFÉ Software (Windows 32–bit) Version 1.5.6 CAFÉ Software (Windows 64–bit) Version 1.5.6 CAFÉ Software Release Notes Version 1.5.6 Lake Controller Release Notes Version 8.1.3 Lake Controller Software Version 8.1.3 Lake LoadLibrary Version 5.9 Q–SYS Plug–In Version 1.1.0

TECHDOCS:

A & E Specifications A & E Specifications, German Current Draw and Thermal Dissipation English Data Sheet Lake Controller Operation Manual Version 1.7.0 Operation Manual English Quick Start Guide English Quick Start Guide, All Languages

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