A & E Specifications

WWW . L A B G R U P P E N . C O M
Item no. AES-DSERIES40:4L_V2 - 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
surveillance and load monitoring capability; Ethernet-based audio
networking and control; third-party control system compatibility
and control using a PC software interface supplied with the unit. The
included integrated software package also shall include a custom
Digital Loudspeaker Processing
Power Amplifier
Maximum total power output shall be 4000 W or 1000 W per channel
nominal @ 4 ohms. Maximum output into a 100 V high-impedance
allocate total available power across output channels as needed for
scaled up in order to distribute the output power. Maximum peak
output voltage shall be 150 V and maximum output current shall be
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 >112 dB. Propagation 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
Load Verification and Circuit Protection
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 Inter
faces
Power Supply, Protection and Cooling
The power supply shall be a universal regulated, switch-mode type
operating at voltages from 70 – 265 V AC at 45 – 66 Hz. A softstart
breaker emulation limiter shall safeguard against tripping of AC
mains breakers. The unit shall be cooled by temperature-controlled
Physical
The unit shall be 483 mm (19 in.) wide, 44 mm (1.75 in. /1U) high, and
424 mm (16 in.) deep. Weight shall be 8.3 kg (18.3 lbs). Finish shall
be black painted steel with grey painted steel front and detachable
(ANSI/UL, CSA), PSE and RCM, NIS, CCC.
The unit shall be the Lab.gruppen D 40:4L.
D SERIES 40:4L
Architects’ and Engineers’ Specification
D SERIES LAKE: High-Performance 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 8 mm2 (8.2 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.