AMC iA 480X User manual

User
Manual
iA480X
Power amplier

Safety instructions
USER MANUAL iA480X Power amplier
When using this electronic device, basic precautions
should always be taken, including the following:
1Read all instructions before using the product.
2Do not use this product near water (e.g., near a bathtub, washbowl,
kitchen sink, in a wet basement or near a swimming pool etc).
3 Use this device when you are sure that amplifier has
a stable base and it is fixed securely.
4This product, in combination with loudspeakers may be
capable of producing sound levels that could cause permanent hearing
loss. Do not operate for a long period of time at a high volume level or at
a level that is uncomfortable. If you experience any hearing loss or ringing
in the ears, you should consult with otorhinolaryngologists.
5The product should be located away from heat sources such as radiators,
heat vents, or other devices that produce heat.
6The product should be connected to a power supply that is described
in the operating instructions or are marked on the product.
7The power supply should be undamaged and never share an outlet
or extension cord with other devices. Never leave device plugged
into the outlet when it is not being used for a long period of time.
8Care should be taken that objects do not fall into liquids and liquids
would not be spilled on the device.
9The product should be serviced by qualified service personnel if:
– The power supply or the plug has been damaged.
– Objects have fallen into or liquid has been spilled on the product.
– The product has been exposed to rain.
– The product has been dropped or the enclosure damaged.
10 There are some areas with high voltage inside, to reduce the risk of electric
shock do not remove cover of the microphone receiver or power supply.
The cover should be removed by the qualified personnel only.
CAUTION
To reduce the risk of electric shock, do not remove screws.
No user-serviceable parts inside. Refer servicing to qualied
service personnel. To reduce the risk of re, electric shock
or product damage, do not expose this apparatus to rain,
moisture, dripping or splashing and that no objects lled
with liquids, such as vases, shall be placed on the apparatus.
RISK OF ELECTRIC SHOCK
DO NOT OPEN

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Maximum Usage 65mm
Minimum Usage 18mm
Minimum Usage 18mm
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Minimum Usage 18mm
Minimum Usage 18mm
Minimum Usage 18mm
Maximum Usage 65mm
Maximum Usage 65mm
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Table of contents
USER MANUAL iA480X Power amplier
Before you start
Introduction......................................................................................................................................................2
Features................................................................................................................................................................2
Operation
Front panel ........................................................................................................................................................3
Rear panel......................................................................................................................................................3-4
Front panel operation................................................................................................................................5
Rear panel operation..................................................................................................................................6
Output terminal.............................................................................................................................................7
Controls and connectors
Connectors........................................................................................................................................................8
Cable wiring examples.........................................................................................................................8-9
Specifications
General specifications.............................................................................................................................10

USER MANUAL iA480X Power amplier
Before you start
iA a group of 100 V amplifiers with different output power configuration for professional contractor
market. Fan powered cooling system, rack mount. iA amplifiers are designed to work under hard
conditions and required minimum maintenance after installation. Used in a medium and large public
address or voice evacuation systems.
FEATURES
• Balancedphoenixinputs
• StereoRCAinput
• Inputgaincontrol
• LINKoutput
• Groundlift
02
• Phoenixoutputconnectors
• DC24Vexternalpowersupplyinput
• DC24Vlinkconnector
•Power,signal,protectandtempindicators
• Powerswitchcover

USER MANUAL iA480X Power amplier
FrontPanel
1.Protectindicator|2. Signal clipping indicator |3. Signal indicator |4.Powerindicator|5.Powerswitch
Operation
03

USER MANUAL iiA480X Power amplier04
Operation
RearPanel
1. Cooling vent |2. Voltage selector |3. Main power connector 4. Holder for AC fuse | 5.LinkforDC24Vpowersupply|Input for DC 24V power supply
7.Amplifiers output |8. Ground lift switch |9.Linkoutput|10. Balanced phoenix and stereo RCA input |11. Input gain control

USER MANUAL iA480X Power amplier
Front panel operation
PROTECT INDICATOR
ThisLEDlightsupforafewsecondsaftertheiA480Xispoweredonandthen
turnsoiftheamplierisnotdamaged.ThisLEDalsolightswhenoverheating
orotherserviceproblemsoccur.ItisnormalfortheprotectionLEDtofade
slowly when the amplifier is powered off.
SIGNAL CLIPPING INDICATOR
Lightswheneverthechannelisoutputtingsignalatfullstrengthandsignalis
distorted. Reduce signal level to ensure undistorted output signal.
SIGNAL INDICATOR
LEDinthefrontpanelindicatesaudiosignaloftheamplier.
POWER INDICATOR
ThisLEDindicatesstatusofthemainpower.TheLEDlightsupiftheamplieris
powered on.
POWER SWITCH
Powerswitchishidedwithcovertopreventillegalorincidentaluse.Remove
coverusingPhillipsscrewdriverandusethisswitchtopoweronorotheam-
plier.ThepowerLEDinthefrontpanellightsupiftheamplierispoweredon.
Rear panel operation
COOLING VENT
Cool air is pulled in through the front panel fan filters and eliminated through
the rear panel vents.
VOLTAGE SELECTOR
This switch is used to set the input voltage to the power supply. Setting the
power supply voltage switch to the incorrect input voltage could damage the
amplifier. The correct voltage is determined by the country where the amplifier
will be used.
MAIN POWER CONNECTOR
Powerconnectorisdesignedformainpowersconnectingtoamplier.This
connector is combined with fuse holder.
HOLDER FOR AC FUSE
Pleaseuse10A,250Vfuseifamplierisusedin~230V50Hzelectricitysystem
and20A,250Vfuseifamplierisusedin~115V60Hzsystem.
LINK FOR DC 24V POWER SUPPLY
This connector is designed to link the DC 24V power to additional amplifier. DC
INandDCLINKconnectorsareconnectedwitheachotherdirectly,insidethe
amplifier.
05
Operation

USER MANUAL iA480X Power amplier06
Operation
INPUT FOR DC 24V POWER SUPPLY
This connector is designed to power up amplifier when the main power is un-
available. Use only 24V power supply or batteries and take attention to polarity
during the wiring. If both, AC and DC power are connected, amplifier will use
main AC power.
AMPLIFIERS OUTPUT
Use this connector to connect amplifier to the loudspeakers.
GROUND LIFT SWITCH
Toeliminateagroundloop,setgroundswitchtoFLOATpositionandotherwise
to connect a ground to amplifiers chassis.
LINK OUTPUT
ConnectoutgoingaudiosignalfromstereoRCAandPhoenixconnectorsto
additional amplifier. Input and link connectors are connected with each other
directly.
AMPLIFIERS OUTPUTBALANCEDPHOENIXANDSTEREORCAINPUT
Connect audio signal to electronically balanced phoenix connector or to stereo
RCA.PleasenotethattheiA480Xneedsatleast0dButoachievemaximum
power.
INPUT GAIN CONTROL
This control allows you to precisely adjust the input level of the signal arriving
at the rear-panel input connectors. At their fully counterclockwise position, the
signal is attenuated by -80 dB. At their fully clockwise position, the signal is no
attenuated. When 0dBu of signal arrives at the input and the input level controls
are set to their fully clockwise position (0dBu), the Amplifier delivers full power.

USER MANUAL iA480X Power amplier
Operation
Amplifiers output can run only one configuration at the same time.
Operating amplifiers using 4 Ω and 70 or 100 volt concurrently may
cause damage to the amplifier or connected speakers.
07
Output terminal

USER MANUAL iA480X Power amplier08
Controls and connections
Connectors
TS connector
TRS connector
Cable wiring examples
Cable to balanced input from balanced output. TRS connectors.
Cable to unbalanced input from balanced output. TRS and TS connectors.
Cable to balanced input from unbalanced output. TS and TRS connectors.
Cable to unbalanced input from unbalanced output. TS connectors.
XLRmaleconnector
XLRfemaleconnector
RCA connector

USER MANUAL iA480X Power amplier
09
Controls and connections
Cabletobalancedinputfrombalancedoutput.XLRconnectors.
Cabletounbalancedinputfrombalancedoutput.XLRandTSconnectors.
Cabletobalancedinputfromunbalancedoutput.TSandXLRconnectors.
Cabletobalancedinputfrombalancedoutput.TRSandXLRconnectors.
RCA cable.
Cable to unbalanced input from RCA output. RCA and TS connectors.
CabletobalancedinputfromRCAoutput.RCAandXLRconnectors.
Cable to balanced input from RCA output. RCA and TRS connectors.
CabletoRCAinputfrombalancedoutput.RCAandXLRconnectors.
Cable to RCA input from balanced output. RCA and TRS connectors.

USER MANUAL iA480X Power amplier
General Specifications
iA480X
Powersupply AC220/110V50/60HzorDC24V
Output power 480 W
AC power consumption 850W
Total harmonic
distortions < 1 %
Input sensitivity 0 dBu
S/N ratio 85 dB
Frequency response 30Hz–20kHz+/-3dB
Protection
Short circuit, thermal, current limit, DC offset,
current inrush, RF protection, Turn on/Turn off
muting.
Cooling Fan forced air
Indicators Power,protection,signal,clip
Controls Powerswitch,inputgain,groundlift
Output 100 V, 70 V, 4 Ω
Weight 14,6 kg
Dimensions 88 mm (H) x 420 mm (W) x 280 mm (D)
10
The specifications are correct at the time of printing this manual.
For improvement purposes, all specifications for this unit, including
design and appearance, are subject to change without prior notice.