A & E Specifications

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Item no. AES-DSERIES804L_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 (all channels driven) shall be 8,000 W or
2,000 W per channel nominal at 4 ohms. Maximum output into a 100 V
high-impedance distributed system also shall be 2000 W. Maximum
peak output voltage shall be 194 V and maximum output current
shall be 67 A. 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. 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. 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 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
g
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 14.5 kg (32 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 80:4L.
D SERIES 80:4L
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 AES67 and Dual Redundant Dante
Ethernet-based audio and d for bi-directional monitoring and control
data with third-party support. Four three-pole terminal block connec-
tors 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 connec-
tors 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.