A & E Specifications

ManualsBrandsLab Gruppen ManualsPower Amplifiers8000W Amplifier with 4 Flexible Output-Channels, Onboard Biamp Tesira Integration and Ethernet AVB Audio Networking for Installation Applications

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Item no. AES-DSERIES804T/Ta_V2 - 27.05.2015

Overview

The unit shall incorporate two core elements: an AVB-capable

network interface for control, monitoring and four-channel audio

compatible with the Tesira

protocols from Biamp Systems; and

a four-channel high-output power ampliﬁer platform. Additional

capabilities shall include on-board surveillance and monitoring of

critical performance parameters for compliance with international

standards for voice evacuation systems. All control and monitoring

facilities shall be accessible via Ethernet using an integrated

software package that includes Tesira

software, a custom ampliﬁer

conﬁguration interface, and additional features to expedite system

design, speciﬁcation and commissioning.

Tesira

Network Integration

The unit shall integrate seamlessly into the Tesira

audio networking,

control and DSP environment as a high-powered expander device.

The unit’s mute, level and signal invert functions, along with load

surveillance, shall be accessible from within the Tesira

software.

Four channels of audio input shall be provided via Tesira

using the

AVB networking protocol. An optional analog input section shall

provide analog failover as well local input to the Tesira

system.

The unit’s power state management (including auto power-down),

GPIO and serial port functions also shall be integrated into the

system. Replacement units shall be hot-swappable within the Tesira

environment with full conﬁguration transfer.

Power Amplier

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 (server analog input to

output) shall not exceed 3.857 ms. The unit shall incorporate a DSP-

implemented zero overshoot voltage peak limiter adjustable per

channel for voltage threshold and proﬁle. The optional four-channel

analog input section shall offer balanced mic/line inputs with 48 V

phantom power and 24-bit/48 kHz A-D converters.

Load Verication 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 Interfaces

The rear panel shall provide an Ethernet AVB port (RJ45 connector)

for bi-directional audio, control and monitoring data. Optional analog

mic/line inputs shall use 3-pole terminal block connectors. A serial

control port (DB9 connector) shall facilitate power management,

and a GPIO port shall be accessed via a terminal block connector.

Output connectors shall be on terminal block connectors with

supplied mating connectors accepting cable up to 16 mm

(6 AWG).

The front-panel user interface shall provide three tri-color LEDs for

system status indication (ALARM, ACTIVITY and STATUS); and

three channel status indicators (LOAD, AMP, SIGNAL). 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.

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

424 mm (16 in.) deep. Weight shall be 14.5 kg (3 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 80:4T with AVB input only;

the Lab.gruppen D 80:4Ta with optional analog inputs.

D SERIES 80:4T/Ta

Architects’ and Engineers’ Speciﬁcation

D SERIES TESIRA®: High-Power Installation Platform