APART REVAMP2120T User manual

REVAMP2120T
Instruction manual

Instruction manualREVAMP2120T 3
REVAMP2120T manual

4DIGITAL 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.

Instruction manualREVAMP2120T 5
• 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.
• 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.

6DIGITAL POWER AMPLIFIER
CAUTION
TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER OR BACK
NO USER-SERVICEABLE PARTS INSIDE
SERVICING ONLY FOR QUALIFIED PERSONNEL
• 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, …

Instruction manualREVAMP2120T 7
Features
• 1 rack unit high
• High power class-D power amplifier module
• Toroidal 100 V output transformers
• Bridgeable 2 channel amplifier
• Output power: 2 x 120 W @ 100 V or 70 V
• Bridged output power: 1 x 240 W @ 100 V or 70 V
• Dynamic output power: 2 x 120 W @ 4 Ω
• RMS power per channel: 2 x 120 W @ 4 Ω (500 ms)
• Dynamic bridged output power: 240 W @ 8 Ω
• Bridged RMS output power: 240 W @ 8 Ω (500 ms)
• Each output can be used in either LowZ or constant voltage
mode without changing settings.
• High thermal efficiency
• Signal clip indicators on the rear for fast and easy configuration
of the input gain.
• Universal switching power supply unit
• No cooling fan – maintenance free
• Low power consumption
• Integrated APC clip limiter
• Balanced euroblock inputs
• Unbalanced inputs on RCA with pass through
• Input level attenuators on all inputs
• Switchable high pass filter on each input
• Euroblock speaker output 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, input overload
• Individual channel mute buttons and versatile LED status
indicators
• Removable rack-ears
Note: the integrated APC clip limiter cannot be bypassed.

8DIGITAL POWER AMPLIFIER
1. Channel 2 overload led: when this led lights up, you are
overloading the input. Lower the input level immediately to
prevent distortion.
2. Channel 1 overload led: when this led lights up, you are
overloading the input. Lower the input level immediately to
prevent distortion.
3. 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.
4. 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.
5. Bridge/2 channel mode selector: push the selector switch to
enable bridge mode operation. The yellow led underneath the
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Connections
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6
1210

Instruction manualREVAMP2120T 9
switch lights up when bridge mode has been activated. Always
disconnect the speaker(s) before (de-)activating bridge mode !
In bridge mode, the input signal from channel 1 is used.
For use with low impedance speakers, the minimum load
impedance in bridge mode is 8 ohms: connect – to CH2 -> 4
ohms, connect + to CH1 -> 4 ohms.
6. Channel 2 speaker output on 6 pole euroblock connector.
7. Channel 1 speaker output on 6 pole euroblock connector.
8. 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.
9. 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.
10. Channel 2 balanced input on 3 pole euroblock connector.
11. Channel 1 balanced input on 3 pole euroblock connector: this
connector is used in bridge mode.
12. 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)
13. Mains inlet: connect the mains power cord here.

10 DIGITAL POWER AMPLIFIER
Operation
1. Removable rack ears for 19” rack mounting.
2. Power switch: after switching on the power, the power led will
light up after approx 1 second.
3. Power led
4. Channel 1 status led bar and mute switch: when the mute
switch is pressed, the orange “LIMIT – MUTED” led will light
up. This led will also light up when the internal limiter is
activated to avoid the amplifier from being overloaded by high
input signals. The “CLIP – OVERLOAD” led indicates that the
power amplifier is clipping: reduce the input signal at once
whenever this occurs. The green “SIGNAL - -40dB” led will light
up when an input signal is present.
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6
5

Instruction manualREVAMP2120T 11
5. Bridged CH 1-2 led
6. Channel 2 status led bar and mute switch: when the mute
switch is pressed, the orange “LIMIT – MUTED” led will light
up. This led will also light up when the internal limiter is
activated to avoid the amplifier from being overloaded by high
input signals. The “CLIP – OVERLOAD” led indicates that the
power amplifier is clipping: reduce the input signal at once
whenever this occurs. The green “SIGNAL - -40dB” led will light
up when an input signal is present.

12 DIGITAL POWER AMPLIFIER
This amplifier relies on convectional cooling only. In normal
situations, overheating will not occur due to the class-D amplifier
topology. Since there are no cooling fans in the amplifier, make
sure the convectional cooling system can work properly. 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 may cause
overheating. 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 a 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: T 5 A
L / 250 V. 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, …
Note: 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 83.3
ohms or more. This value corresponds to 120 watts @ 100 volt.
Important notice

Instruction manualREVAMP2120T 13
Technical specifications
output power RMS @ 100 volts 2 x 120 watts
output power RMS bridged @ 100
volts
240 watts
output voltage tappings 100 -70 - 50 - 35 watts - 4 ohms
RMS output power @ 4 ohms 2 x 120 watts
dynamic output power @ 8 ohms 2 x 60 watts
RMS output power @ 8 ohms 2 x 60 watts
dynamic output power bridged @
8 ohms
240 watts
output power RMS bridged @ 8
ohms
240 watts
minimum impedance load per
channel
4 ohms
minimum impedance load bridged
per channel
8 ohms
output channels 2
line input balanced 2
line input unbalanced 2
Input impedance 22 kΩ
Input sensitivity 0 dBV / 1 V
S/N ratio >98 dB A weighted
THD ch. 1/2 <0.1% @ max power -6dB / 4Ω /
1kHz A weighted
Channel separation > 65 dB @ 1 kHz

14 DIGITAL POWER AMPLIFIER
frequency response 50 - 20 kHz
cooling system convectional
Protection circuits over current, over temperature,
DC offset
Operating temperature range 0 to 40°C
Net weight product 6.1 kg
height- rack units (1U=44 mm) 1 U
depth (build in) 230 mm
depth (incl front) 239 mm
19" (483 mm wide) rack mounting Yes
power consumption (max) 300 watts
power supply volts 115 - 230 VAC
Power supply technology SMPS
Power amp topology Class-D

developed
by
Apart Audio 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.