Crestron AMP-2800 User manual

The Crestron® AMP-2800 and AMP-4600 are high-power, high-efficiency
multichannel power amplifiers offering excellent sound quality for use
with long runs of multiple high-impedance loudspeakers requiring high
total power output, or with loudspeakers capable of high power handling,
such as Crestron’s Vector™ Performance series.
The AMP-2800 and AMP-4600 feature similar operation. For simplicity
within this guide, the term "amplifier" is used for both models except
where noted.
In the Box
1 AMP-2800 or AMP-4600, Multichannel Commercial Amplifier
Additional Items
2 Bracket, Rack Ear, 1U (2032123)
2 Bracket, Rear Mounting (2045677)
1 Cable, Power (P/N varies by country)
6 Screw, 4B x 1/4 in., Pan Head, Phillips (2007195)
AMP-2800 Only
2 Connector, 2-Pin (2044402)
2 Connector, 3-Pin (2003575)
AMP-4600 Only
4 Connector, 2-Pin (2044402)
4 Connector, 3-Pin (2003575)
Install the Device
These devices occupy 1U of rack space.
To install the included rack ears:
1. Use a #1 Phillips screwdriver to remove the three screws from each
side of the front of the amplifier as shown in the following illustration.
2. Use the screwdriver and the six included 1/4 in. Phillips Pan Head
screws to attach the included rack ears to the amplifier.
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To install the included rear mounting brackets:
1. Use a #1 Phillips screwdriver to remove the screws from the rear of
the amplifier as shown in the following illustration.
2. Use the screws removed in step 1 to attach the mounting brackets to
the rear of the amplifier.
Then mount the device into the rack using four rack mounting screws (not
included).
Connect the Device
Connect the device as called out in the following illustrations. Connect
power last.
CAUTIONS:
lKeep the device unplugged until all of the input, network, and
speaker wiring is complete.
lCheck the speaker cables for shorts and frayed wiring around the
SPEAKER OUTPUTS connectors.
NOTES:
lEnsure the unit is properly grounded by connecting the chassis
ground lug to an earth ground (building steel).
lTo prevent overheating, do not operate this product in an area that
exceeds the environmental temperature range listed in the table of
specifications on the product web page. Fans provide side-to-side
airflow for cooling. Do not block the ventilation holes.
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AMP-2800 Front
AMP-2800 Rear
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AMP-4600 Front
AMP-4600 Rear
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Line Input Connection
If an unbalanced connection from a line input is required, use a jumper
between the negative (-) and ground (G) terminals.
Speaker Connections
The speaker outputs can be wired conventionally or they can be bridged to
deliver higher power. Refer to the following illustrations when connecting
speakers.
WARNING: This amplifier is capable of delivering high power to the
loudspeakers. Please use caution and wear adequate hearing
protection if listening at high volume, as continued exposure to high
sound pressure levels can cause permanent hearing impairment or
loss.
Speakers are bridged with the Crestron Avia® Audio tool, which can be
downloaded from www.crestron.com/software. The possible bridging
combinations are Output 1 & Output 2 (AMP-2800 and AMP-4600) or
Output 3 & Output 4 (AMP-4600 only).
NOTE: The minimum load impedance for bridged channels is 8 ohms.
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Operate the Device
Apply Power
To turn the amplifier on, move the power switch (located next to the
power connector) to |. To turn the amplifier off, move the power switch to
O. This will also reset the device.
When power is applied to the device, the color of the PWR LED on the
front panel indicates with the following:
lGreen - Normal operation
lAmber - Device is booting up
lAmber/Green (cycling) - No network connection
Adjust the Signal Levels
Each channel has an input attenuator on the rear panel. Use these to
adjust the loudness in each zone. To adjust the level of an input, turn the
knob clockwise to increase the signal level, or counterclockwise to reduce
the signal level.
Monitor Operation
Use the status indicators and VU meters on the front panel to monitor
each speaker output.
LEDs in the STATUS section indicate the following for each output:
lPresence of a fault
lAn overcurrent condition
lA DC offset condition
lExcessive operating temperature
l70/100 volt operation
LEDs in the VU section indicate the signal level of each output and
whether a clipping condition is present.
Reset the Device
Press RESET on the front panel to restart the device.
Circuit Protection
The amplifier is equipped with a resettable circuit breaker on the rear
panel to protect the amplifier from excessive current draw or high (AC)
mains voltage. If the circuit breaker opens, press the circuit breaker
button to reset. If the breaker trips again, reduce the audio system
volume to decrease amplifier current draw and verify that the mains
voltage is within the specified range.
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Configure the Device
Connect to the Device
Configure the amplifier with the Crestron Avia Audio tool, which can be
downloaded from www.crestron.com/software.
To connect to the amplifier:
1. In the Crestron Avia Audio tool, click CONNECT TO DEVICE.
The Network Devices window is displayed.
2. Do one of the following:
lClick Ethernet to discover all devices on the network that are
compatible with the tool, and then select the amplifier from the list.
lClick Address Book… to connect to the amplifier in a Crestron
Toolbox™ software Address Book.
lClick on Address… to manually enter the address of the amplifier.
3. If the Ethernet option in step 2 was used, click Add Selected to add the
amplifier to the Devices list, and then select the amplifier in the list to
connect to it. If either of the other methods in step 2 was used, the
amplifier is connected automatically and the Signal view is displayed.
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Name the Outputs
Outputs can be given friendly names (such as "Stage Left" or "Stage
Right") to keep track of them while using the tool. These will only apply
within the Crestron Avia Audio tool.
To name an output:
1. Double-click the output's current name to highlight it.
2. Enter a new name for the output, and then press Enter.
Mute or Adjust an Output
By default, the Crestron Avia Audio tool comes with the amplifier outputs
unmuted. However, the tool can be used to mute outputs or to make
digital level adjustments prior to analog conversion at the amplifier
output.
To mute an output or adjust its level:
1. Double-click the red GAIN block associated with the output to be
adjusted. The GAIN object for that output is displayed.
2. Click the Mute button to toggle the output’s mute on or off, and drag
the level fader to adjust the digital output level from -80 to 0 dBFS.
The VU meter within the object will match the tool's horizontal VU
meter associated with the output, and will reflect any changes made
to the Mute or Level controls.
Change the Output Type
The outputs of the amplifier can be adjusted for either high impedance or
low impedance loads. Outputs can also be bridged for greater power
output from two connectors to a single load. See Speaker Connections
above for details. Outputs can also be configured as stereo pairs to apply
the same Mute and Level controls to both channels (this applies only
within the tool).
To adjust the output type settings:
1. Double-click the yellow AMP block associated with the output to be
adjusted. The AMP object for that output is displayed.
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2. Do one of the following:
lClick the Stereo button to pair the output with its associated
stereo partner channel (channel 1 with channel 2, or channel 3 with
channel 4*). The AMP object closes. When the object is reopened,
the Bridge button is disabled. Click the Stereo button again to
toggle Stereo mode off and unpair the output channels.
lClick the Bridge button to bridge the output with its associated
bridge partner channel (channel 1 with channel 2, or channel 3 with
channel 4*). The AMP object closes. There is an audible relay click at
the device to indicate that these outputs are now bridged. The GAIN
object associated with the even-numbered output (channel 2 or
channel 4*) in the pair disappears. When the AMP object is
reopened, both the Stereo and High Impedance buttons are
disabled. Click the Bridge button to toggle Bridge mode off.
lClick the High Impedance button to enable the output to operate as
a high impedance output (for operation with 70/100V loudspeaker
systems). There is an audible relay click at the device to indicate
that the output is now operating in high impedance mode. The
Bridge button is disabled. Click the High Impedance button again to
toggle back to low impedance operation for that output channel.
* Channels 3 and 4 are AMP-4600 only.
Connect to Crestron XiO Cloud
Service (Optional)
The Crestron XiO Cloud™ service allows supported Crestron devices
across an enterprise to be managed and configured from one central and
secure location in the cloud. Supported devices are preconfigured to
connect to the service. Use of the service requires a registered Crestron
XiO Cloud account.
NOTE: The device can be disconnected from the service using the
Cloud Services tab in Crestron Toolbox™ software (Functions > Device
Info > Cloud Services). For details, refer to the Crestron Toolbox help
file.
To connect the device to the Crestron XiO Cloud service:
1. Record the MAC address and serial number labeled on the shipping box
or rear panel of the device. The MAC address and serial number are
required in order to add the device to the Crestron XiO Cloud
environment.
2. Do either of the following:
lAccess the Crestron XiO Cloud service at https://portal.crestron.io.
lRegister for a Crestron XiO Cloud account at
www.crestron.com/xiocloud.
For detailed information about using the Crestron XiO Cloud service,
refer to the Crestron XiO Cloud Service User Guide (Doc. 8214).
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Visit the Product Page
Scan the QR code to visit the product page.
AMP-2800
www.crestron.com/model/6508359
AMP-4600
www.crestron.com/model/6508361
Additional Information
Original Instructions
The U.S. English version of this document is the original instructions.
All other languages are a translation of the original instructions.
Crestron product development software is licensed to Crestron dealers and Crestron
Service Providers (CSPs) under a limited nonexclusive, nontransferable Software
Development Tools License Agreement. Crestron product operating system software is
licensed to Crestron dealers, CSPs, and end-users under a separate End-User License
Agreement. Both of these Agreements can be found on the Crestron website at
www.crestron.com/legal/software_license_agreement.
The product warranty can be found at www.crestron.com/warranty.
The specific patents that cover Crestron products are listed at
www.crestron.com/legal/patents.
Certain Crestron products contain open source software. For specific information, visit
www.crestron.com/opensource.
Crestron, the Crestron logo, Crestron Avia, Crestron Toolbox, Crestron XiO Cloud, and
Vector are either trademarks or registered trademarks of Crestron Electronics, Inc. in
the United States and/or other countries. Other trademarks, registered trademarks,
and trade names may be used in this document to refer to either the entities claiming
the marks and names or their products. Crestron disclaims any proprietary interest in
the marks and names of others. Crestron is not responsible for errors in typography or
photography.
©2020 Crestron Electronics, Inc.
Doc. 8400D
04/30/20
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