inout DA 480-R Bedienungsanleitung
USER MANUAL
DA 480-R
Version 1.0
DA 480-R User manual v.1
Page 1
Warranty
DA 480-R is covered by 24 month warranty on its electronics parts, starting from the date of
purchase. This warranty becomes void in case of tampering with the device and in case of
work carried out on it by people that were not authorized by the manufacturer or by an
authorized dealer. Warranty conditions are those described in the “Warranty Rules”.
NOTE - responsibility of the purchaser: in case of repair under warranty, the device must be
packed in order to avoid damage during transport and shipped to the manufacturer together
with all the accessories.
Warranty Rules.
1. In order to exercise his warranty rights, the purchaser must include with the device a copy
of the evidence of purchase duly stamped by the dealer (bill/invoice).
2. The warranty lasts 24 months on the electronic parts. The warranty is granted at the point
of sale or it could be directly requested to the manufacturer.
3. The warranty only covers damage to the product which makes it work badly.
4. Work under warranty will only mean repairing or replacing, free of charge, any parts
acknowledged being defective during manufacture or in their material, including labour
costs.
5. The warranty does not apply to damage caused by negligence or failure to comply with the
instructions, or damage caused by unauthorised people, with a special reference to the
external parts.
6. Also, the warranty does not apply to damage caused to the device by connection to
unsuitable power sources.
7. The warranty does not cover parts that are subject to wear as a consequence of the use,
as well as the chassis if the material is not defective.
8. The warranty does not include transport costs, which will be paid by the purchaser
depending on way and time of transport.
9. The warranty expires 24 months after the purchase. In this case, service will be provided
charging for the replaced parts, labour costs and transport according to the current rates.
10.In case of any controversy the Court of Law of Venice has the exclusive jurisdiction.
DA 480-R User manual v.1
Page 2
SUMMARY
1. Installation
1.1 Introduction
1.2 Contents of the DA 480-R
1.3 Safety rules
2. Overview
2.1 Rear panel overview
2.2 Front panel overview
2.3 Amplifier configurations general overview
3. Connections
3.1 4 ch amplification
3.2 2 ch amplification - BRIDGED
3.3 Remote volume control – VCA
4. Amplifier configurations
4.1 Failure signal - FAULT
4.2 RS485 serial communication
4.3 Input signal sensibility
4.4 Hi-pass filter
4.5 Ground-lift
4.6 Factory reset
5. Protections
5.1 Speakers protection
5.2 Thermal protection
5.3 Over-current and short-circuit protection
6. Specifications
6.1 Technical features
6.2 Mechanical dimensions
6.3 Block diagram
DA 480-R User manual v.1
Page 3
1Installation
1.1 Introduction
The power amplifier DA480-R has been developed to satisfy most of the professional audio
installations and designed to provide performance with the best stability and reliability,
permitting a continued use without failure and without the need of maintenance.
The power stages circuitation is based on the new generation “Class D” technology that
permit to obtain high quality performance, low heat dissipation and that permit to keep
distortion within a very small range also with a high power supplied.
Power supply circuit is “switch mode” with the benefit of high efficiency and reduced weight.
1.2 Contents of the DA 480-R
Contents of the DA480-R kit:
-n° 1 DA 480-R device
-n° 1 user manual
-n° 1 power supply cable
1.3 Safety rules
Read carefully the following warnings to keep your and others safety, for the right use of the
device and to avoid warranty invalidation.
1. Do not expose the device to rain or high humidity. Protect the device from accidental liquid
penetration, if it happens, stop using the device and apply to qualified or authorized
personnel.
2. Do not insert things into the device through the openings to avoid risk of fire or electric
shock.
3. Before connect the amplifier, ALWAIS verify the ground connection as requested by the
law.
4. Disconnect the device from the light socket before make any operation for the internal
device configuration.
5. This power amplifier has been designed and produced to operate ONLY with a 230VAC
mains power.
6. If the original power cord is waste or deteriorate, replace it with a similar one.
7. For speakers connections the use of cables with appropriate section and that meet the
safety laws is suggested
8. Switch on the amplifier only after all the other components of the sound system have been
connected and switched on, to avoid hums and annoying noise from the speakers.
9. Disconnect the device from the light socket before make cleaning operations. Clean the
device with a dry and soft cloth. Do not use liquids or spray that can contain flammable
elements.
DA 480-R User manual v.1
Page 4
10.Device handling must take place only when all the cables have been disconnected.
11.Device maintenance must be done only by qualified personnel.
12.For any requirement or technical information contact InOut or authorized personnel.
OBSOLETE DEVICES DISPOSAL
•This picture means that the device is European Directive 2002/96/EC
compliant.
•All electronic and electric devices should be disposed separately from the
normal garbage, by specific gathering plants designated by the government or
by local authorities.
•Correct disposal of obsolete devices, of the accessories and especially of the
batteries, contribute to prevent possible negative consequences on human
health and on the environment.
•For detailed information on obsolete devices disposal, contact the
municipality, the garbage disposal service or the store where you bought the
device.
DA 480-R User manual v.1
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2Overview
2.1 Rear panel overview
1) 230VAC mains power connector, use the appropriate supplied cable.
2) Protection fuse on mains power
3) Mains power switch
4) Forced ventilation fan
IMPORTANT:
The power amplifier, during regular operation, needs a suitable cooling that can be done by
natural or forced ventilation.
Device installation must allow holes that permit a regular air flow. Air scoops are on the
front panel, air exit is from the rear panel.
In case of more amplifiers mounted on a single rack, air exchange could be poor; it’s
advisable, in this case, to provide forced ventilation to the rack too. It’s advisable that the
ventilation take place with the air aspiration from the bottom and the air emission from the
top of the rack.
5) External volume adjustment potentiometers connector (VCA)
6) Fault output relay connector
7) Fault output TTL connector
8) RS485 serial connector
9) CH 1-2-3-4 input sensibility adjustment potentiometers
10) CH 1-2-3-4 balanced input connectors
11) CH 1-2-3-4 power output (speakers) connector.
DA 480-R User manual v.1
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2.2 Front panel description
1) Power amps cooling grille.
2) “Device ON” LED, powered device.
3) Three-colour LED with indication purpose:
LED Description Indicating
off = input signal not present or too low
green = input signal present SIGNAL
red = input signal too high OVERLOAD
yellow = output channel fault FAULT
4) Power section cooling grille.
DA 480-R User manual v.1
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2.3 Power amp configurations general overview
DA 480-R User manual v.1
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3Connections
3.1 4 channels configuration
4 CHANNELS AMPLIFICATION OUTPUT CONNECTIONS
Observe correct polarity in speaker
connection to have output signals
in phase with the input ones.
IMPORTANT:
•Do not connect outputs among them or to others amplifiers outputs.
•Do not short circuit the outputs.
•To connect the speakers use the appropriate cable section depending on the connection
length. Reduced section cables cause power loss along the line with, consequently, cable
heating.
4 CHANNELS AMPLIFICATION INPUT CONNECTIONS
BALANCED INPUT:
Pin 1: ground
Pin 2: reverse phase signal
Pin 3: in phase signal
UNBALANCED INPUT:
Pin 1: ground
Pin 2: ground
Pin 3: in phase signal
IMPORTANT:
•20Kohm nominal impedance inputs.
•For unbalanced signals is mandatory to connect together pin 1 and 2.
DA 480-R User manual v.1
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Input connections advices
•Use only hi-quality coaxial cables.
•Unbalanced connections must be as shortest as possible
•Do not put low level signal cables close to high level ones (speakers cables) or close to power
cables. This avoid induction noise introduction.
•DO NOT CONNECT together input and output grounds to avoid ground loops.
•Switch off the amplifier before make changes on connections.
•Keep in mind that the system can give instant high power.
4 CHANNEL AMPLIFICATION INPUT LEVEL ADJUSTMENT
Level controls on rear panel are
independent for each channel in
the section.
IMPORTANT:
Adjust input sensibility until green LED lights on.
If the LED becomes red, input signal is saturated;
this generates audio distortion to the output.
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