Audio Press Box APB-216 C User manual

APB-216 C
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:
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:
Power supply/Power cord
• Only use the voltage specied as correct for the device. The required voltage is printed
on the name plate of the device.
• Use only the specied AC power adaptor.
• Do not place the power cord near heat sources such as heaters or radiators, and do not
excessively bend or otherwise damage the cord, place heavy objects on it, or place it in a
position where anyone could walk on, trip over, or roll anything over it.
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.
Power supply/Power cord
• Remove the electric plug from the outlet when the device is not to be used for extended
periods of time, or during electrical storms.
• When removing the electric plug from the device or an outlet, always hold the plug itself
and not the cord. Pulling by the cord can damage it.
• To avoid generating unwanted noise, make sure there is 50cm or more between the AC
power adaptor and the device.
• Do not cover or wrap the AC power adaptor with a cloth or blanket.
WARNING
CAUTION
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.
If you notice any abnormality
• If the power cord or plug becomes frayed or damaged, or if there is a sudden loss of
sound during use of the device, or if any unusual smells or smoke should appear to be
caused by it, immediately turn off the power switch, disconnect the electric plug from
the outlet, and have the device inspected by qualied AudioPressBox service personnel.
• If this device or the AC power adaptor should be dropped or damaged, immediately turn
off the power switch, disconnect the electric plug from the outlet, and have the device
inspected by qualied AudioPressBox service personnel.
Location
• Before moving the device, remove all connected cables.
• When setting up the device, make sure that the AC outlet you are using is easily
accessible. If some trouble or malfunction occurs, immediately turn off the power switch
and disconnect the plug from the outlet.
• Avoid setting all controls to their maximum. Depending on the condition of the connected
devices, doing so may cause feedback and may damage the speakers.
2

Use only the adaptor included with this
AudioPressBox. Use of a different adaptor may
result in equipment damage, overheating, or re.
Be sure to unplug the adaptor from the outlet
when not using AudioPressBox, or when there
are lightning storms in the area.
To avoid generating unwanted noise, make
sure there is 50 cm or more between the
power adaptor and AudioPressBox.
• 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 off the power for all devices. Before
turning the power on or off 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 off, the power amplier should
be turned off FIRST for the same reason.
CAUTION
• Do not insert your ngers 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, turn off the power immediately and unplug the
power cord from the AC outlet. Then have the device inspected by qualied 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.
Always turn the power off when the device is not in use.
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

Dear customer,
Thank you for purchasing the AudioPressBox® APB-216 C.
A professional portable 1 channel active press box (Audio Splitter) suitable for both indoor and outdoor press conferences. It features
2 MIC/Line Inputs and 16 Line/Mic Outputs. Each Output is independet transformer balanced and isolated. The APB-216 C also
includes a rechargable AccuPack so it can run on its own up to 10 hours. All of this placed in a waterproof, heavy duty Nanuk case.
The package contains
1. AudioPressBox unit.
2. Power supply.
3. Manual
4. Test report
Phantom power
If you are about to use condenser microphone, turn
Phantom power switch ON to feed your microphone
with 24/48V. If you use dynamic microphone or micro-
phone with his own power, you can switch this OFF.
Mic/Line
If you are using microphone as an input, the switch
should be set to “Mic” position. If you are using a Line
input or input from the mixing console, please set this
switch to “Line” position.
Transformer
Individually transformer isolated outputs.
Rechargeable batteries
Optional Built-in Li-Ion battery pack with micro-
processor controlled battery management, 10 hour
working time at full load. No self-discharge and
memory effect, always ready to use. Short charging
time compared to conventional batteries.
Features:
APB-216 C
4
AC
+
LI-ION
ACCU
PACK
(10 HRS)
TRANSFORMER
16x

APB-216 C
1) Input XLR microphone/line connector
Input your microphone or line-level source into this
XLR balanced connector. You can connect any type of
condenser either dynamic microphone here.
(1:Ground; 2:Hot, 3:Cold).
2) Phantom power indicator
If you are about to use condenser microphone, turn
Phantom power switch ON to feed your microphone with
24/48V. If you use dynamic microphone or microphone
with his own power, you can switch this OFF.
5
3) Mic/Line Input switch
If you are using microphone as an input, this lever should
be set to “Mic” position. If you are using Line input or
input from the mixing console, please set this switch to
“Line” position. You can check the output level on the
Output level meter (5).
4) Input gain level knob
You can set the input signal level depending on the
connected audio source to reach the optimal output level.
6
895
4
2
1
7
3
10
Be sure to leave this switch off ( ) if you do not
CAUTION need phantom power.
When tuning the switch on ( ), be sure that only condenser
mics are connected to the XLR input. Devices other than
condenser mics may be damaged if connected to the phantom
power supply. Note, however, that the switch may be left on
when connecting to balanced dynamic microphones.
To avoid damage to speakers, be sure to turn off ampli ers (or
powered speakers) before turning this switch on or off. We also
recommend that you turn all output controls to their minimum
settings before operating the switch to avoid the risk of loud
noises that could cause hearing loss or device damage.

6
5) Level
Displays the signal level.
6) Power supply connector
Plug the mains cable to AudioPressBox® here.
7) Power switch
With the power switch, you can turn your AudioPressBox®
ON or OFF. When AudioPressBox® is turned on, this
indicator lights up.
8) Battery and Charge indicator
When APB is turned ON and is running on battery, the
battery indicator lights blue.
When APB is turned ON and pluged to the main, the
battery is being recharged and the battery indicator is off.
9) Mic/Line Output Switch
Each output is switchable between Mic and Line output
level.
Mic level -20 dBu
Line level +6 dBu
10) Output
Each output is balanced and individually transformer
isolated.

Specications
7
Audio Press Box APB-216 C
Type 2 in 16 out
Groups 1
Input section
Inputs 2
Input connectors Balanced, XLR
Input Gain MIC +22/+62 dB LINE -4/+36 dB
Max. input level Mic: -10/-30dBu
Line: +36/-4dBu
Input Impedance Mic: 2,4 kOhm Line: 3,5 kOhm
Phantom Voltage 48V
Output section
Outputs 16 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 86dB
Frequency Response 120Hz to 30kHz/-1dB
Controls Input section: 26dB PAD, Input gain, Phantom Output section: Power switch, Output PAD
Indicators Input section: Phantom power, Input level
Power Supply 24V DC, 1A external adaptor
Battery Li-Ion, 14,4 V 2200mAh
Battery operation time up to 8 hrs
Dimensions (WxHxD) 370x120x300 mm
Weight 4,7 kg

Block diagram
8
-26dB
Mic/Line
-26dB
Mic/Line
Compressor Limiter
HPF 160Hz
Gain
Input 1
Input
Mic/Line
Input 2
APB-216 C
Signal Meter
Out
Buffer Out
1 16
Mic/Line
Amp.
PAD
26dB
Mic/Line
48V
Phantom

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