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Adastra mottagare 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.
1.
MASTER volume control
2.
Power Audio Output indicators &
3.
IEC power inlet and fuse holder
4.
Power on/off switch
5.
100V and 8 speaker output terminals Ω
6.
L 4 RCA input INE
7.
CH3 6.3mm and screw terminals input
8.
CH2 6.3mm and screw terminals input
9.
CH1 Phantom-Mic/Line-Vox DIP switches
10.
LINE OUT RCA outpu t

Produktspecifikationer

Varumärke: Adastra
Kategori: mottagare
Modell: US90

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