APART REVAMP4120T User manual

REVAMP4120T
Instruction manual

Instruction manualREVAMP4120T 3
REVAMP4120T manual

4CLASS-D POWER AMPLIFIER
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions
2. Keep these instructions
3. Pay attention to all warnings
4. Follow all instructions
5. This professional device needs to be installed by qualified personnel only.
6. 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.
7. Make sure to only use power outlets conform to the power requirements
listed on the back of the unit.
8. 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.
9. Do not drive the inputs with a signal level higher than that required to
drive equipment to full output.
10. Do not run the output of any amplifier back into another input.
11. This unit has NOT been designed for use in mobile applications, such
as: mobile discobars, mobile PA systems, Live bands, audio rental
systems,… Using it in such application will lead to product damages and
safety risks.
12. Do not use this apparatus near water
13. Clean only with dry cloth.
14. Do not block any ventilation openings. Install in accordance with the
manufacturer instructions.

Instruction manualREVAMP4120T 5
15. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
16. Do not defeat the safety purpose of the polarized or grounding plug.
Always use the device with a grounded mains power plug. If the
provided plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
17. Protect the power cord from being walked on, pinched or damaged.
Particularly at the plugs, connectors and at the point where they exit
from the apparatus.
18. Only use attachments/accessories specified by the manufacturer.
19. Unplug the apparatus during lightning storms or when unused for long
periods of time.
20. Use only with the cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the apparatus. When a cart or rack is used,
use caution when moving the cart/apparatus combination to avoid injury
from tip-over.
21. Refer all servicing to qualified personnel. Servicing is required when the
apparatus has been damaged in any way, such as power supply cord
or plug is damaged, liquid has been spilled or objects have fallen into
the apparatus has been exposed to rain or moisture, does not operate
normally, or has been dropped.
22. WARNING: To reduce the risk of fire or electric shock, do not expose this
apparatus to rain or moisture. The apparatus shall not be exposed to
dripping or splashing and that objects filled with liquids, such as vases,
shall not be placed on apparatus.
23. WARNING: The mains plug/appliance coupler is used as disconnect
device, the disconnect device shall remain readily operable.

6CLASS-D POWER AMPLIFIER
24. This lightning flash with arrowhead symbol within an equilateral triangle
is intended to alert the user to the presence of non-insulated “dangerous
voltage” within the product’s enclosure that may be of sufficient
magnitude to constitute a risk of electric shock.
- Warning: To reduce the risk of electric shock, do not remove cover (or
back) as there are no user-serviceable parts inside. Refer servicing to
qualified personnel.
- The exclamation point within an equilateral triangle is intended to
alert the user to the presence of important operating and maintenance
instructions in the literature accompanying the appliance.
25. Protective earthing terminal. The apparatus should be connected
to a mains socket outlet with a protective earthing connection.
26. Correct Disposal of this product. This marking indicates that this
product should not be disposed with other household wastes
throughout the EU. To prevent possible harm to the environment
or human health from uncontrolled waste disposal, recycle it responsibly
to promote the sustainable reuse of material resources. To return your
used device, please use the return and collection systems or contact the
retailer where the product was purchased. They can take this product for
environmental safe recycling.
27. No naked flame sources, such as lighted candles, should be placed on
the apparatus.
28. Do not install this equipment in a confined or building-in space such
as a book case or similar unit, and remain a well ventilation conditions
at open site. The ventilation should not be impeded by covering the
ventilation openings with items such as newspaper, table-cloths, curtains
etc.

Instruction manualREVAMP4120T 7
Features
• 2 rack units high
• High power Hypex®class-D power amplifier modules
• Bridgeable 4 channel class-D amplifier
• Output power: 4 x 120 W @ 100 V
• Bridged output power: 2 x 240 W @ 100 V
• 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
• 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.

8CLASS-D 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
1514

Instruction manualREVAMP4120T 9
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.

10 CLASS-D 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 selector: set to 230 or 115 VAC according to
your local mains voltage.
15. Mains voltage inlet: connect the mains power cord here.
1 12 3 4 5

Instruction manualREVAMP4120T 11
• 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.

12 CLASS-D 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 35°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 13
Technical specifications
Output power 4 x 120 W / 100 V
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 35°C
Mains operating voltage 100-120/220-240V~ 50/60Hz
Dimensions 483 x 88 x 332 mm (including
rack ears)
Net weight 12.1 kg
Gross weight 15.1 kg

14 CLASS-D POWER AMPLIFIER
Notes

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.