Adastra US90 Bedienungsanleitung

Adastra Empfänger US90

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US-series

Compact 100V Slave Amplifiers

Item ref: US 953.196 60 UK

US90 953.199UK

User Manual

Version 1.1

Caution: Please read this manual carefully before operating

Damage caused by misuse is not covered by the warran ty

US , US User Manual 60 90

Introduction

Thank you for choosing an Adastra US-series slave amplifier as part of your public address system.

This unit is designed to offer high quality, dependable service for mobile and installed systems.

Please read this manual to gain the best results from your product and avoid damage through misuse.

SAFETY SYMBOL AND MESSAGE CONVENTIONS

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

AVIS

RISQUE DE CHOC ELECTRIQUE NE PAS

OUVRIR

This symbol indicates that dangerous voltage constituting a risk of electric shock is present

within this unit

This symbol indicates that there are important operating and maintenance instructions in

the literature accompanying this unit.

SAFETY NOTICE

1. Prior to use, read through this manual

2. Keep the manual in good condition

3. Pay attention to safety warnings

4. Observe all operating requirements

5. Do not use the device near water or wet areas

6. For cleaning, only use a lint-free, dry cloth

7. Install according to the specifications

8. Place away from heat sources or heating applianc es

9. Use mains lead provided and avoid damage to cable or connectors

10. Unplug power from mains during stormy weather or if unused for long periods

11. In case of malfunction, water ingress or other damage, consult qualified service personnel

12. Do not place in damp areas or near liquids or moisture. Do not spill liquids on the housing

13. Please pay attention to warning symbols during transit and placement

14. Terminals marked with the symbol are HAZARDOUS LIVE and should only be connected by qualified personnel

15. Ensure that the apparatus is connected to a mains socket with a protective EARTH connection

16. Ensure correct operation of the mains switch

Warning

To prevent the risk of fire or electric shock, do not expose any components to rain or moisture.

If liquids are spilled on the casing, stop using immediately, allow unit to dry out and have checked by qualified personnel before

further use. Avoid impact, extreme pressure or heavy vibration to the case

No user serviceable parts inside Do not open the cas refer all servicing to qualified service personnel. –e –

Safety

• Check for correct mains voltage and condition of IEC lead before connecting to power outlet

• Use double insulated speaker wire with adequate current rating for 100V speaker connections

• Only use 1 type of output i.e. do not mix or combine these outputs on a single zone – 8Ω or 100V –

• Do not connect 8Ω speakers to the 100V terminal or 100V speakers to the 8Ω terminal

• The US-series amplifiers also have a 100V input for extracting a line input from an existing 100V speaker feed.

(this is an input connection and not an additional speaker output)

Placement

• Keep out of direct sunlight and away from heat sources

• Keep away from damp or dusty environments

• For rack-mounting, use the supplied accessories and ensure adequate support

• Ensure adequate airflow and do not cover cooling vents at the front and rear of the amplifier

• Ensure adequate access to controls and connections

Cleaning

• Use a soft cloth with a neutral detergent to clean the casing as required

• Use a vacuum cleaner to clear ventilation grilles of any dust or debris build-ups

• Do not use strong solvents for cleaning the unit

US , US User Manual 60 90

Rack mounting

The US series amplifiers can be mounted into a 19 rack cabinet using the supplied rack accessories. ”

As shown below, the 2 joining brackets link a pair of UM series amplifiers together to form a full-width 1U rack-mount pair. One rack

ear can be mounted at each end for g to the rack strip. fixin

Wall or under counter mounting

The rack mounting accessories can also be attached so that the amplifier can be

mounted against a wall or under a counter or work surface. do this, mount the To

rack ears with the tabs aligned with the top of the housing to provide mounting holes

to screw the amplifier to the underside of a work surface or against a wall with the

controls visible vertically.

Front panel

Rear panel

Connection and setup

Set the rear power switch (4) to the “off” position and connect the rear IEC inlet (3) to the mains using the supplied mains lead (or an

equivalent approved type). Check that the supply voltage is 170-264Vac 50Hz.

A pair of screw terminals is provided on the right side of the rear panel for connection to an alarm system if required

(10). This connection will mute the LINE IN inputs but will not mute 100V IN (for alerts) when 24V is present across the

terminals.

(24V is a standard trigger voltage from most fire and security panels)

Note: Screw terminal blocks can be unplugged from the panel for convenience during connection.

The US series slave amplifiers are designed to accept a single line level audio input, such as the line output of a mixer or another

amplifier, as a means of expanding an existing sound system. The line input can also be from a CD, mp3, DAB/FM tuner or other line

level source if that is the only audio source that is required.

Input connection is via Left + Right RCA sockets (7), which are summed to mono for the output, or via a screw terminal

input (8), which is labelled “+ / / G”. -

For Unbalanced connection, connect the signal (core) wire to “+” and connect the Ground (braid) to “ and G”.-

For Balanced connection, there will be 2 core wires. Connect the hot (usually red) wire to “+” and the cold (white, black or blue) wire

to “ ”. Then connect the Ground (braid) separately to “G”. -

Another input method is provided via the 100V input terminals (9). This is a pair of screw terminals (+/-) for connecting to

the speaker line in a 100V line system. - (there Connect “+” to 100V and “ ” to 0V or GND as you would any 100V speaker.

is internal protection to ensure that the high voltage cannot cause damage to this input)

Caution: Do not connect 100V speaker output from this amplifier to its own 100V input!

This type of input means that an existing 100V sound system can be extended from any point along its output wiring without the need

for running additional signal cables and can also avoid problems associated with signal degradation along low voltage audio cables.

Caution: Do not connect 100V speaker level to any other input - this could damage the amplifier.

A twin RCA line output (6) is provided for connecting the mix of all channels onto further amplifiers.

MASTER volume control

Power Audio Output indicators &

IEC power inlet and fuse holder

Power on/off switch

100V and 8 speaker output terminals Ω

L 4 RCA input INE

CH3 6.3mm and screw terminals input

CH2 6.3mm and screw terminals input

CH1 Phantom-Mic/Line-Vox DIP switches

10.

LINE OUT RCA outpu t

Produktspezifikationen

Marke:	Adastra
Kategorie:	Empfänger
Modell:	US90
Breite:	269 mm
Tiefe:	210 mm
Gewicht:	2300 g
Produktfarbe:	Schwarz
Übertragungstechnik:	Kabelgebunden
Höhe:	44 mm
Zweck:	Haus
AC Eingangsspannung:	170-264 V
AC Eingangsfrequenz:	50 Hz
Audio Kanäle:	1.0 Kanäle
THD, totalklirren:	0.4 %
Rauschverhältnis (SNR):	80 dB
Frequenzbereich:	100 - 18000 Hz
Ein-/Ausschalter:	Ja
Line-Ausgänge (RCA):	2
Verstärkerklasse:	D
Maximum Eingabeniveau:	100 V
Synchronisations-Eingangsimpedanz:	1 Ohm
Lautsprecher-Konnektivitätstyp:	RCA
Leistungshöhepunkt pro Kanal:	60 W
Output Widerstand:	8 Ohm
Line-Eingänge (RCA):	2