A & E Specifications

ManualsBrandsLab Gruppen ManualsPower Amplifiers20,000 Watt Amplifier with 4 Flexible Output Channels, Lake Digital Signal Processing and Digital Audio Networking for Installation Applications

WWW . L A B G R U P P E N . C O M

Item no. AES-DSERIES2004L_V3 - 22.02.2018

Overview

The unit shall incorporate two core elements: a four-in/four-out

digital loudspeaker drive processor and a four-channel, high-output

power ampliﬁer platform. Additional facilities shall include on-board

surveillance and load monitoring capability; Ethernet-based audio

networking and control; third-party control system compatibility

using custom middleware; and comprehensive system conﬁguration

and control using

a PC software interface supplied with the unit. The

included integrated software package also shall include a custom

ampliﬁer conﬁguration interface and additional features to expedite

system design, speciﬁcation and commissioning.

Digital Loudspeaker Processing

Maximum total power output shall be 20,000 W or 5,000 W per

channel nominal @ 2.67 ohms; output at 4 ohms shall be 4400 W

per channel nominal. Maximum output into a 100 V high-impedance

distributed system shall be 4700 W. The ampliﬁer topology shall

allow ﬂexibility in output power management, with the capability to

allocate total available power across output channels as needed for

the application. Maximum peak output vol

tage shall be 194 V and

maximum output current shall be 67 A. The ampliﬁer shall incorporate

power factor correction (PFC) to reduce requirements on the mains

distribution system. Ampliﬁer gain shall be digitally conﬁgurable from

22 dB to 44 dB. The unit shall exhibit the following performance

parameters: Frequency response shall be 20 Hz – 20 kHz ± 0.05 dB

(1 W into 8 ohms). Dynamic range shall be >114 dB. Pro

pagation

delay shall not exceed 1.61 ms for AES3 input (96 kHz) or 1.68 ms

for analog input. The unit shall incorporate a DSP-implemented zero

overshoot voltage peak limiter adjustable per channel for voltage

threshold and proﬁle.

The unit shall include facilities for status surveillance and load

monitoring consistent with international standards for use in mission-

critical voice evacuation systems. Circuits and sensors shall be

provided for warning and protection of VHF (very high frequencies),

DC at output, over-temperature, open load, excessive current, and

voltage peak clipping.

Connectors and User Interfaces

Power Supply, Protection and Coolin

The power supply shall be a universal regulated, switch-mode type

operating at voltages from 70 – 265 V AC at 45 – 66 Hz. A soft-

start circuit shall limit current inrush to 8 A. A software conﬁgurable

breaker emulation limiter shall safeguard against tripping of AC

mains breakers. The unit shall be cooled by temperature-controlled

fans with air ﬂow from front to rear.

Physical

The unit shall be 483 mm (19 in.) wide, 8

8 mm (3.5 in. /2U) high, and

424 mm (16 in.) deep. Weight shall be 16.5 kg (36 lbs). Finish shall

be black painted steel with grey painted steel front and detachable

grille. The unit shall be approved for use as speciﬁed by CE, ETL

(ANSI/UL, CSA), PSE and RCM.

The unit shall be the Lab.gruppen D 200:4L.

D SERIES 200:4L

Architects’ and Engineers’ Speciﬁcation

D SERIES LAKE: High-Power Installation Platform

The unit shall include four discrete modules of digital loudspeaker

processing. Audio inputs shall be analog with oating ground

isolation, AES3 digital, AES67 and dual redundant Dante

Ethernet-based network. Auto failover switching among inputs

shall be user programmable. Facilities shall be provided for

exible input mixing and routing. DSP capabilities shall include

raised cosine equalization, linear-phase and classical crossovers,

and peak and RMS limiters.

The rear panel shall provide two EtherCon connectors for AES67

and Dual Redundant Dante Ethernet-based audio and for

bi-directional monitoring and control data with third-party support.

Four three-pole terminal block connectors shall be provided for

analog audio inputs and two three-pole terminal block connectors

for AES3 digital inputs. Output connectors shall be on terminal

block connectors with supplied mating connectors accepting cable

up to 16 mm2 (6 AWG). The front-panel user interface shall provide

tri-color indicator LEDs for FRAME status, TEMPerature and PSU

status; and four channel status indicators (LOAD, AMP, SIGNAL,

MUTE). A soft-touch POWER button shall select ON or STANDBY

mode with LED status indication. A soft-touch SELECT button with

LED status indicator shall select software functionality.