Audio Press Box APB-112 OW-D-USB User manual

APB-112 OW-D-USB
Press Conference Audio Distribution Amplifier
Owner’s manual
English

Always follow the basic precautions listed below to avoid the possibility of serious injury or even death from electrical shock, short-circuiting, damages,
re or other hazards. These precautions include, but are not limited to, the following:
Do not open
• Do not open the device or attempt to disassemble the internal parts or modify them in any
way. The device contains no user-serviceable parts. If it should appear to be malfunctioning,
discontinue use immediately and have it inspected by qualied AudioPressBox service
personnel.
Water warning
• Do not expose the device to rain, use it near water or in damp or wet conditions, or place
containers on it containing liquids which might spill into any openings.
• Never insert or remove an electric plug with wet hands.
WARNING
If you notice any abnormality
•If this device should be dropped or damaged, immediately disconnect the Dante network and
have the device inspected by qualified AudioPressBox service personnel.
2

• Do not expose the device to excessive dust or vibrations, or extreme cold or heat (such
as in direct sunlight, near a heater, or in a car during the day) to prevent the possibility of
panel disguration or damage to the internal components.
• Do not place the device in an unstable position where it might accidentally fall over.
Connections
• Before connecting the device to other devices, turn o the power for all devices. Before
turning the power on or o for all devices, set all volume levels to minimum.
Handling caution
• When turning on the AC power in your audio system, always turn on the power amplier
LAST, to avoid speaker damage. When turning the power o, the power amplier should
be turned o FIRST for the same reason.
• Do not insert your fingers or hands in any gaps or openings on the device.
• Avoid inserting or dropping foreign objects (paper, plastic, metal, etc.) into any gaps or
openings on the device If this happens, unplug the Dante network. Then have the device
inspected by qualified AudioPressBox service personnel.
• Do not use the device or headphones for a long period of time at a high or uncomfortable
volume level, since this can cause permanent hearing loss. If you experience any hearing
loss or ringing in the ears, consult a physician.
• Do not rest your weight on the device or place heavy objects on it, and avoid use excessive
force on the buttons, switches or connectors.
XLR-type connectors are wired as follows (IEC60268 standard): pin 1: ground, pin 2: hot (+), and pin 3: cold (-).
AudioPressBox cannot be held responsible for damage caused by improper use or modications to the device, or data that is lost or destroyed.
The performance of components with moving contacts, such as switches, volume controls, and connectors, deteriorates over time. Consult qualied AudioPressBox service personnel about replacing defective
components.
Illustrations herein are for explanatory purposes only, and may not match actual appearance during operation.
Company names and product names herein are trademarks or registered trademarks of their respective companies.
Specications and descriptions in this owner’s manual are for information purposes only. AudioPressBox reserves the right to change or modify products or specications at any time without prior
notice. Since specications, equipment or options may not be the same in every locale, please check with your AudioPressBox dealer.
3
Always follow the basic precautions listed below to avoid the possibility of physical injury to you or others, or damage to the device or other property.
These precautions include, but are not limited to, the following:
CAUTION

Dear customer,
Thank you for purchasing the AudioPressBox APB-112 OW-D-USB.
APB-112 OW-D-USB is an active AudioPressBox unit with one channel DANTE input, 8 XLR transformer isolated outputs with switchable Mic/Line
output level and 4 USB-C outputs. OW suffix means that the unit is designed for wall mounting. The unit is powered directly from Dante network
via PoE. It is a PoE Class 3 device
The package contains:
1. APB-112 OW-D-USB unit
2. Test report
Transformer
Individually transformer isolated outputs.
PoE powered (Class 3 device)
Features:
APB-112 OW-D-USB
4
TRANSFORMER
12 x
Switchable Mic/Line output Level
for each output
1-channel Dante interface
4 USB-C outputs

APB-112 OW-D-USB
1.) Mic/Line switch
Output level switch. You can individually
select nominal output level for each output.
Mic = -26dBu, Line = +6dBu
2.) XLR Ouputs
Eight Individually transformer isolated
balanced outputs with switchable output
level: MIC -26dBu, Line +6dBu. Standard
Neutrik 3-pin XLR connector
3.) Power LED
Indicates that the device receives PoE power
and is ready for use
4.) Output level indicator
Indicates the analog output level in dB. 0dB
is nominal output level which corresponds
to +6dBu (Line) or -26dBu (Mic) on outputs
5.) Dante connector
Standard RJ45 connector for connecting to
PoE and Dante network
6.) USB
USB-C outputs for smartphones or laptops
5
3
245
1
6

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Usage
APB-112 OW-D-USB is designed for use as a distribution audio amplifier for press conferences. It features
one digital input from Dante network, eight analog audio outputs with individual output level switch – MIC/LINE
and four USB-C outputs*. There is no signal processing inside. All desired processing should be done in other
devices (e.g. mixing console or DSP). So, the APB-112 OW-D-USB is suitable for fixed installations with integrated
Dante network.
For proper operation and to maintain declared parameters, it is necessary to drive the APB with the correct
signal level from Dante network. The nominal analog output level of APB is +6dBu which corresponds to -18dBFS
(FS = Full Scale) of digital signal on Dante network. So, we recommend to drive the APB with digital signals
somewhere between -26dBFS and -16dBFS. Also, it is very useful to drive the APB with a processed signal e.g. with
applied compressor and limiter to reduce the dynamics of the signal especially for speech.
* For iPhone and iPad with lightning connector Apple Lightning to USB 3 Camera Adapter is needed together
with a USB-A to USB-C cable.

7
Operations
For more information about Dante controller set up click on the following link:
https://www.audiopressbox.com/pages/audiopressbox-apb-112-ow-d-usb-manual
1.
Connect the APB to Dante network
with PoE capability
APB-112 OW-D-USB is a PoE Class 3
device, so it can be powered from a basic
PoE
2.
Make the Dante signal routing
APB is set by default to obtain IP
address from DHCP server.
In Dante network you will see the APB as:
APB112OW-D-USB-serialnumber. You can
change it in Dante controller software. In this
software you can also route the signal to APB
3.
Set up the levels
Set up the output level on your source device
to reach the nominal output on APB – 0dB LED
on Output Level indicator. You can also set the
output level switch for each output as desired
– Mic or Line
4.
APB is ready to use!

Installation
APB-112 OW-D-USB is designed for “On Wall” installation.
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1.) Unscrew 4 screws on top panel
2.) Release the back panel
3.) Screw it to the wall, the wall may be
from concrete, stud, wood… Please use
suitable mounting method for your type
of wall material
4.) Connect the RJ-45 cable to APB
5.) Screw the APB to the back plate

9
Specications
Audio Press Box APB-112 OW-D-USB
Type 1In 12Out
Groups 1
Input section
Inputs 1
PoE Requirement YES
Output section
Outputs 8 Line/MIC level
Output connectors Balanced, XLR
Nominal Output Level +6dBu
Maximum Output Level +20dBu (no load)
+14dBu (600Ohm)
Output impedance MIC: 220 Ohm LINE: 600 Ohm
Transformer isolated outputs Yes (each output)
SNR >70 dB
Frequency Response 20Hz to 20kHz/-3dB
Digital Outputs
Output connector USB Type C
Compliant USB Specification USB 2.0
Supported Sampling Rates 8kHz, 11.025kHz, 16kHz, 22.05kHz, 32kHz, 44.1kHz, 48kHz
Bit Depth 16-Bit
Reference level -18dBFS
Input connectors RJ45 - Dante
Interface Powering Bus powered (from connected USB host device)
Analog Outputs
Charging capability No

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Specications
Audio Press Box APB-112 OW-D-USB
Indicators
Output section: Output level. Power
Power
Power Supply
Mechanical
Dimensions (WxHxD) 280x138x54mm
Weight 2400 g
PoE (Type 1, Class 3 (12,95W))

11
Block diagram

e-mail: [e-mail] | web: www.audiopressbox.com
MediaTech Central Europe, a.s., Drienova 34, 821 02 Braslava, Slovak Republic (EU)
Tel: [phone]