APART REVAMP4120T User manual

REVAMP4120T
Instruction manual

Instruction manualREVAMP4120T
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REVAMP4120T manual

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PROFESSIONAL POWER AMPLIFIER
Safety first!
• Caution! This professional device needs to be installed by
qualified personnel only.
• Please check the carton box for any kind of damage on
reception of the goods. In case of a damaged carton, please
contact your dealer before opening the carton.
• !!!! Danger !!!! Exposure to high sound levels may cause a
permanent hearing loss. Individuals vary considerably to sound
pressure level induced hearing loss but nearly everyone will
lose some hearing if exposed to high sound pressure levels for
a sufficient amount of time. Therefore it is recommended that
all persons exposed to equipment capable of producing high
sound pressure levels, such as this amplifier, be protected by
hearing protection while installing or operating this unit.
• Read all documentation before operating your equipment.
• Keep all documentation for future reference.
• Save the carton and packing material even if the equipment has
arrived in good condition.
• Should you ever need to ship the unit, use only the original
factory packing.
• Do not spill water or other liquids into or on the unit.
• Make sure power outlets conform to the power requirements
listed on the back of the unit.
• Do not use the unit if the electrical power cord is frayed or
broken.
• Always operate the unit with the AC ground wire connected to
the electrical system ground.

Instruction manualREVAMP4120T
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• Set level controls on amplifiers all the way down during power-
up to prevent speaker damage if there are high signal levels at
the inputs.
• Do not connect the inputs / outputs of amplifiers or consoles
to any other voltage source, such as a battery, mains source, or
power supply, regardless of whether the amplifier or console is
turned on or off.
• Power down & disconnect units from mains voltage before
making connections.
• Do not use the unit near stoves, heat registers, radiators, or
other heat producing devices.
• Do not operate equipment on a surface or in an environment
which may distort the normal flow of air around the unit. If the
unit is used in an extremely dusty or smoky environment, the
unit should be periodically “blown free” of dust.
• Do not remove the cover. Removing the cover will expose you
to potentially dangerous volt ages.
• Do not drive the inputs with a signal level higher than that
required to drive equipment to full output.
• Do not run the output of any amplifier back into another input.
• In case of mal-function this device should be serviced by
qualified service personnel only.
• This unit has NOT been designed for use in mobile applications,
such as: mobile discobars, mobile PA systems, Live bands, audio
rental systems, …
• Before using the amplifier for the first time, check the
impedance of your 100 volt speaker lines using the Apart
IMPMET.

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PROFESSIONAL POWER AMPLIFIER
Features
• 2 rack units high
• High power Hypex® class-D power amplifier modules
• Bridgeable 4 channel class-D amplifier
• Output power: 4x120W@100V
• Bridged output power: 2x240W@100V
• High thermal efficiency
• Convectional cooling with temperature controlled cooling fan
(normally off)
• Integrated APC limiter/compressor
• Soft start switching power supply unit
• Toroidal 100 volt transformers
• Switching mode power supply
• Balanced euroblock inputs
• Unbalanced inputs on RCA with pass through
• Input level attenuators on all inputs
CAUTION
TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER OR BACK
NO USER-SERVICEABLE PARTS INSIDE
SERVICING ONLY FOR QUALIFIED PERSONNEL

Instruction manualREVAMP4120T
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• Euroblock speaker connectors with multiple taps: 35 volt, 50
volt, 70 volt, 100 volt and 4 ohm
• Extended speaker and amp protection circuits: over current
protect, over temperature protect
• Versatile LED status indicators
• This unit has NOT been designed for use in mobile applications,
such as: mobile discobars, mobile PA systems, Live bands, audio
rental systems, …
• Removable rack-ears
Note: the integrated APC limiter will automatically limit the
incoming audio signal to avoid overloads. This feature can not be
defeated and acts as a lifesaver for your valuable speakers.

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PROFESSIONAL POWER AMPLIFIER
1. Channel 2 overload led: when this led lights up, you are
overloading the input. Lower the input signal immediately to
prevent the amplifier from shutting down.
2. Channel 2 unbalanced input and link cinch connector: connect
the line level input signal for channel 2 here. Line level is 0 dBV.
Input and link connector are internally connected 1 on 1.
3. Channel 1 overload led: when this led lights up, you are
overloading the input. Lower the input signal immediately to
prevent the amplifier from shutting down.
Connections
Only channel 1 and 2 are explained. Channel 3 and 4 are functionally
identical to 1 and 2.
1
2 6 8
4 9
5 7
3
10 11 12 13
14

Instruction manualREVAMP4120T
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4. Channel 1 unbalanced input and link cinch connector: connect
the line level input signal for channel 1 here. Line level is 0 dBV.
Input and link connector are internally connected 1 on 1. This
connector is also used in bridge mode.
5. Channel 2 input gain setting: Adjust the input gain to the
output level of your source. Make sure to avoid the clip led
lighting up at the strongest input peak level.
6. Channel 2 balanced input on 3 pole euroblock connector.
7. Channel 1 input gain setting: Adjust the input gain to the
output level of your source. Make sure to avoid the clip led
lighting up at the strongest input peak level.
8. Channel 1 balanced input on 3 pole euroblock connector: This
connector is used in bridge mode.
9. HPF on/off dipswitch for channels 1 and 2: set to on position to
enable the 250Hz highpass filter (ideal for using 100 volt horn
speakers)
10. Channel 2 output on euroblock: use the com (negative) in
combination with one of the output options: low impedance (4
ohms), 35 volt, 50 volt, 70 volt or 100 volt (positive). Never use
more than one output simultaneously.
11. Bridge button: set to 2 channel for normal operation. Set to
bridge mode for bridge mode operation.
12. Channel 1 output on euroblock: use the com (negative) in
combination with one of the output options: low impedance (4
ohms), 35 volt, 50 volt, 70 volt or 100 volt (positive). Never use
more than one output simultaneously.
13. Fan area: keep free from dust and obstructions.

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PROFESSIONAL POWER AMPLIFIER
Operation
1. Removable rack ears for 19 rack mounting.
2. Power switch.
3. Power led.
4. Channel 1 and 2 mute buttons and multifunctional led display.
5. Channel 3 and 4 mute buttons and multifunctional led display.
14. Mains voltage inlet: connect the mains power cord here.
1 12 3 4 5

Instruction manualREVAMP4120T
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• Clip – overload led indicates that the amplifier is overloaded
or clipping: reduce the incoming signal immediately to avoid
overloads or clipping and eventually amplifier shutdown.
• Limit – muted indicates that the internal limiter is active or that
the channel is muted by pushing the mute button.
• Signal -40dB indicates that a signal is present at the input
• Mute button: push to mute/unmute the channel.
• Bridged led (yellow) lights up when bridge mode is selected via
the rear panel bridge pushbutton.

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PROFESSIONAL POWER AMPLIFIER
!!!IMPORTANT!!!
This amplifier relies on convectional and active cooling. In normal
situations, overheating will not occur. The unit can be built in a 19
inch rack system, but it is forbidden to block the ventilation holes
provided. Therefore, it is absolutely necessary to allow at least
one free rack space or 44 mm above and beneath the amplifier.
Make sure the ambient temperature is between 0 and 40°C.
Operating the unit beyond its normal limits will result in excessive
internal temperature. Power amplifiers are hard workers, and
their behaviour is similar to human beings. In extreme conditions,
human beings are not able to perform efficiently. This also applies
to amplifiers. It is generally a bad idea to mount multiple heat
generating units such as amplifiers in the same rack. If necessary,
use an additional forced ventilation system in your mounting rack.
The mains fuse is located inside the unit. When the fuse is broken,
replace it with a fuse of the same current and voltage rating: 5
AT/250V. For qualified personnel only!
This unit has NOT been designed for use in mobile applications,
such as: mobile discobars and DJ setups, mobile PA systems, Live
bands, audio rental systems …
Use it in fixed installations only.
Before using the amplifier for the first time, check the impedance
of your 100 volt speaker lines using the Apart IMPMET: temporarily
disconnect the speaker line from the amplifier and measure the
speaker line. Impedance @ 100 volt must be 83 ohms or more. This
value corresponds to 120 watts @ 100 volt.

Instruction manualREVAMP4120T
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110 VAC operation: it is possible to operate the unit at 110 (115)
VAC.
Therefore, open the unit and set a wire jumper on the connector for
110 VAC operation.

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PROFESSIONAL POWER AMPLIFIER
Technical specifications
Output power 4x120 W/100 volt
Load impedance 83 ohms / 100 volts; 41 ohms /
70 volts; 21 ohms / 50 volts; 10.5
ohms / 35 volts; 4 ohms / 4 ohms
Input connections 4 x unbalanced on RCA with
pass through + 4 x balanced on
euroblock
Input sensitivity 0 dBV / 1V
Input impedance 22 kΩ
S/N ratio >101 dB A weighted
THD <0.05% @ 1 W / 4 Ω / 1 kHz A
weighted
Frequency response 50 – 20 kHz + 0 / - 3 dB
Protection circuits over current, over temperature
Channel separation > 68 dB @ 1 kHz
Power amp topology Class D
Power supply switching mode power supply
Cooling convectional and temperature
controlled fan
Max power consumption 525 W
Operating temperature range 0 to 40°C
Mains operating voltage 230 VAC / 50 Hz – 115 VAC / 60 Hz
Dimensions 483 x 88 x 332 mm (including
rack ears)
Net weight 12.1 kg
Gross weight 15.1 kg

developed
by
Audioprof nv
Industriepark Brechtsebaan 8 bus 1
2900 Schoten - Belgium
Company names, product names and trademarks are property of their
respective owners.
Apart-Audio specifications are subject to change without notice.