REVAMP8250
Instruction manual
REVAMP8250 manual
Instruction manualREVAMP8250
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CLASS-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 manualREVAMP8250
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.
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CLASS-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.
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26.
27. No naked flame sources, such as lighted candles, should be placed on
28. Do not install this equipment in a confined or building-in space such
Protective earthing terminal. The apparatus should be connected
to a mains socket outlet with a protective earthing connection.
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.
the apparatus.
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 manualREVAMP8250
Features
• 19”, 2 rack units high.
• 8 output channels powered with class-D amplifiers.
• 8 x 250 watts (4 ohms) or 4 x 500 watts (8 ohms) RMS.
• Switching mode power supply.
• Intelligent thermal power limiting circuit: limits the output
power to a safe limit whenever a thermal overload occurs.
• Very high channel separation.
• Input signal clip indicators on the rear for fast and easy
configuration of the input gain.
• Versatile LED status indicators on the front.
• Unbalanced RCA input and Balanced euroblock input for each
input.
• Input level attenuators on all inputs.
• Switchable high pass filter on each input (250 Hz).
• Extended speaker and amp protection circuits: over current
protect, over temperature protect and DC protect.
• Cooling fan.
• Integrated APC limiter.
• Removable rack-ears.
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Note: the integrated APC limiter will automatically limit the
incoming audio signal to avoid overloads. This feature cannot be
defeated and acts as a lifesaver for your valuable speakers.
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Connections
CLASS-D POWER AMPLIFIER
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Only channel 1 and 2 are explained. Channels 3 to 8 are
functionally identical to 1 and 2.
1. Channel 2 unbalanced input and link RCA connector: connect
the line level input signal for channel 2 here. Line level is 0 dBV.
Input and link RCA connector are internally connected 1 to 1.
2. 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.
3. Channel 1 unbalanced input and link RCA connector: connect
the line level input signal for channel 1 here. Line level is 0 dBV.
Input and link RCA connector are internally connected 1 to 1.
This connector is also used in the bridge mode.
4. 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.
Instruction manualREVAMP8250
5. Channel 2 balanced input on 3 pole euroblock connector:
connect the line level input signal for channel 2 here. Line level
is 0 dBV.
6. Channel 2 input attenuator setting: Adjust the input attenuator
to the output level of your source. Make sure to avoid the clip
led lighting up at the strongest input peak level.
7. Channel 1 balanced input on 3 pole euroblock connector:
connect the line level input signal for channel 1 here. Line level
is 0 dBV. This connector is also used in the bridge mode.
8. Channel 1 input attenuator setting: Adjust the input attenuator
to the output level of your source. Make sure to avoid the clip
led lighting up at the strongest input peak level.
9. Bridge button: set to channel for normal operation. Set to
bridge mode for bridge mode operation.
10. HPF on/off dipswitch for channels 1 and 2: Set to on position to
enable the 250 Hz high pass filter.
11. Channel 2 and 1 output on euroblock: minimal load impedance
is 4 Ohms in stereo mode and 8 Ohms in bridge mode.
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12. Fan area: keep free from dust and obstructions.
13. Mains voltage selector: set to 230 or 115VAC according to your
local mains voltage.
14. Mains inlet connecter: connect the mains cable supplied with
the unit here.
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CLASS-D POWER AMPLIFIER
Operation
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1. Removable rack ears for 19” rack mounting.
2. Power switch.
3. Power led
4. Channel 1 – 8 multifunctional led displays.
• Clip – overload led (Red) indicates
that the amplifier is overloaded
or clipping: reduce the incoming
signal immediately to avoid
clipping and eventually amplifier
shutdown.
• Limiter active (Orange): indicates that the internal limiter is
active.
• Signal -40 dB (Green) indicates that a signal is present at the
input.
• Bridged led (Yellow) lights up when the bridge mode is
selected via the rear panel bridge push button.
Instruction manualREVAMP8250
Important notice
This amplifier relies on 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 behavior 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:
F16AH/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.
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CLASS-D POWER AMPLIFIER
Technical specifications
Dynamic program power at 4 ohms 350 watts
Output power RMS at 4 ohms 250 watts
Output power RMS at 8 ohms
(bridged)
Load impedance
Input connections
Input sensitivity 0 dBV (1Vrms)
Input impedance 22 kΩ
S/N ratio >100 dB A weighted
THD <0.5% A weighted
Frequency response 20 – 20 kHz +-3 dB
Protection circuits over current, over temperature
Channel separation >60 dB @ 1 kHz
Power amp topology class-D
500 watts
minimum 4 Ω in stereo mode,
minimum 8 Ω in bridge mode
Unbalanced on RCA and balanced
on euroblock
Instruction manualREVAMP8250
Power supply switching mode power supply
Cooling active cooling front to back
Max power consumption 2200 watts
Operating temperature range 0 to 40°C
Mains operating voltage 115-230 VAC (50 Hz - 60 Hz)
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Dimensions
Net weight 21.7 kg
Gross weight 25.2 kg
483 x 88 x 332 mm
(including rack ears)
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CLASS-D POWER AMPLIFIER
developed
by
Industriepark Brechtsebaan 8 bus 1
Apart Audio nv
2900 Schoten - Belgium
Company names, product names and trademarks are property of their
Apart-Audio specifications are subject to change without notice.
respective owners.
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