AUDAC mpx User manual

MPX
User Manual
www.audac.eu

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3
Index
Introduction 5
Precautions 6
Safety requirements 6
Caution servicing 7
EC Declaration of Conformity 7
Waste of Electrical and Electronic Equipment (WEEE) 7
Chapter 1: Connections and connectors 8
Connection standards 8
Chapter 2: Overview MPX 11
Chapter 3: Connecting & Configuring the MPX 12
Connecting the MPX 12
Configuring the MPX 13
Chapter 4: Technical specifications 14

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5
Introduction
Paging microphone for MTX
The MPX microphones are specifically designed to be used in combination with the
MTX Multi-Zone audio matrix system. They come in two different versions with four
and eight zone selection buttons, offering a plug-and play solution for corresponding
MTX matrix systems.
The construction is made of weighted ABS material and finished with an acrylic top panel.
The buttons are integrated using the capacitive touch principle without any mechanically
moving parts. Selection & status LED’s are integrated below the acrylic surface, giving
an indication of the selected zones and databus status. Besides the zone selectors, quick
operation is allowed through the Select & Clear all buttons, while the push-to-talk (PTT)
button should be pressed during the announcement.
An integrated chime tone is heard before any announcement. Announcements can be
made to the integrated pipe-neck microphone with a cardioid pickup pattern which can
be tilted to the desired angle.
The microphone should be connected to the matrix system using the fixed cable with a
length of 2 meters. The distance can be extended to a maximum length of 300 meters,
using standard CAT5E (or better) twisted pair cabling. Cascading of multiple paging
stations is made possible using the priority-based (user-configurable) databus, when
using additional junction boxes ARJ03P or CP45ARJ.

6
Precautions
READ FOLLOWING INSTRUCTIONS FOR YOUR OWN SAFETY
• ALWAYS KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE. NEVER
THROW THEM AWAY
• ALWAYS HANDLE THIS UNIT WITH CARE
• CLEAN ONLY WITH DRY CLOTH
• HEED ALL WARNINGS AND FOLLOW ALL INSTRUCTIONS
• NEVER EXPOSE THIS EQUIPMENT TO RAIN, MOISTURE, ANY DRIPPING OR
SPLASHING LIQUID. NEVER PLACE AN OBJECT FILLED WITH LIQUID ON TOP
OF THIS DEVICE
• DO NOT INSTALL THIS UNIT NEAR ANY HEAT SOURCES SUCH AS RADIATORS
OR OTHER APPARATUS THAT PRODUCE HEAT
• DO NOT PLACE THIS UNIT IN ENVIRONMENTS WITH A HIGH LEVEL OF DUST,
HEAT, MOISTURE OR VIBRATION
• THIS UNIT IS DEVELOPED FOR INDOOR USE ONLY. DO NOT USE IT OUTDOORS
• PLACE THE UNIT ON A STABLE BASE OR MOUNT IT IN A STABLE RACK
• ONLY USE ATTACHMENTS & ACCESSORIES SPECIFIED BY THE
MANUFACTURER.
• UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED
FOR LONG PERIODS OF TIME
• CAREFULLY CHECK THE UNIT’S CONDITION AFTER UNPACKING.
IF THERE IS ANY DAMAGE TO THE CARTON BOX OR THE UNIT ITSELF,
INFORM YOUR VENDOR IMMEDIATELY.
• THE INSTALLATION, CONNECTION AND CONFIGURATION OF THE DEVICE
SHOULD BE DONE BY QUALIFIED TECHNICIANS
• USE CABLES WITH CLEAR COLOUR CODING INDICATING THE POLARITY AND
MAINTAIN THE SAME POLARITY THROUGHOUT THE WHOLE SYSTEM.

7
CAUTION - SERVICING
This product contains no user serviceable parts. Refer all servicing
to qualified service personnel. Do not perform any servicing
(unless you are qualified to do so.)
EC DECLARATION OF CONFORMITY
This product conforms to all the essential requirements and
further relevant specifications described in following directives:
2004/108/EC (EMC) and 2006/95/EC (LVD)
WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)
The WEEE marking indicates that this product should not be
disposed with regular household waste at the end of its product
life. This regulation is created to protect both the environment
and human health.
This product is developed and manufactured with high quality
materials and components which can be recycled and/or reused.
Please dispose of this product at your local collection point or
recycling centre for electrical and electronic waste. Do this to
make sure that the product is recycled in an environmental friendly
way, and will help to protect the environment in which we all live.

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9
Chapter 1
Connections and connectors
CONNECTION STANDARDS
The in- and output connections for AUDAC audio equipment are performed
corresponding to international wiring standards for professional audio equipment.
RJ45 (RS485, Audio, +24V DC):
For connection to MTX Matrix
Pin 1 White-Orange Not connected
Pin 2 Orange Not connected
Pin 3 White-Green +24V DC
Pin 4 Blue RS485 A
Pin 5 White-Blue RS485 B
Pin 6 Green GND
Pin 7 White-Brown AUDIO MIC +
Pin 8 Brown AUDIO MIC -
The microphone should be connected to the matrix system using the fixed connection
cable with a length of 2 meters. The distance can be extended to a maximum length
of 300 meters, using CAT5E (or better) twisted pair cabling.
Cascading of multiple paging stations is possible by connecting them in parallel using
the priority-based (user-configurable) databus.
ATTENTION
The twisted pair cabling must always be ‘straight’. In case
of self made cabling, it must be wired as described above,
to make the system work properly.

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11
Chapter 2
Overview MPX
The front panel of the MPX contains various selectors and indicators. All selection
buttons are implemented using capacitive touch principle, whereby selection is done
by gliding your finger over it.
A zone selection button with indicator LED on top of it is provided for every zone
(4 zones for MPX48 & 8 zones for MPX88). The indicator LED will illuminate when
the corresponding zone is selected. Using the ‘ALL’ (Select all) and ‘CLR’ (Clear all)
buttons, zones can be quickly selected & de-selected for increased user convenience.
The ‘PTT’ (Push-To-Talk) button should be pressed and held when making
announcements. When releasing, announcements will be stopped. An integrated
chime tone will be heard before any announcement is made.
A ‘BUSY’ and ‘ERROR’ monitoring LED indicate the current operation status of the
device. The ‘BUSY’ LED will illuminate while the databus is occupied through another
paging microphone or when the integrated chime is playing. When the ‘PTT’ button is
pressed and the ‘BUSY’ LED is off, accouncements can be made.
The ‘ERROR’ LED will illuminate when no connection is established between the
microphone and the matrix, or when no acknowledge to announcements is given by
the matrix.

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Chapter 3
Connecting & Configuring the MPX
Depending the number of connected MPX paging microphones to one matrix, the
connection and configuration should be done in an appropriate way.
When only one MPX is connected to a system, it can simply be plugged and used
without requiring any further configuration. When multiple MPX microphones are
connected to a system, cascaded connections and priority configurations should be
made as described in this chapter.
The maximum distance from the beginning of the databus to the last device is limited
to a total cable length of 300 meters. The supply voltage for the MPX is delivered over
the twisted pair cabling and the voltage level on the MPX side should be at least 15
Volts. When the voltage drop on the MPX side is lower than 15 Volts, the system won’t
work properly and an ARJ03P junction box with external power supply needs to be
applied.
Connecting the MPX
1) Connecting one MPX
When only one paging microphone is required in your system, the MPX can be directly
connected to the ‘PAGING’ RJ45 connector on the MTX as shown in below diagram.
CLIP
PAGING
Zone 8
Line 5 Line 4 Line 3Line 6
Mic 1Mic 2
-14+9
PHANTOM
GAIN
-500
MTX88
AUDAC
Caution: Only use
fuses of the same type
Warning: Do not
expose this equipment
to rain or moisture
GAIN
MID
-15 +15
HIGH
-15 +15
LOW
-15 +15
MID
-15 +15
HIGH
-15 +15
LOW
-15 +15
PHANTOM
GAIN
-50 0

100-40500
150
THNT
232
WP
GND  
GND
L
L
Zone 
WP
GND  
GND
L
L
Zone 6
WP
GND  
GND
L
L
Zone 5
WP
GND  
GND
L
L
Zone 4
WP
GND  
GND
L
L
Zone 3
WP
GND  
GND
L
L
Zone 2
WP
GND  
GND
L
L
Zone 1
WP
GND  
GND
L
L
CLIP CLIP CLIP
CLIP CLIP
GND
24 
-14+9
GAIN
-14 +9
GAIN
-14+9
GAIN


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2) Connecting multiple MPX
When multiple paging microphones are required in your system, cascading can be
done by connecting them in parallel on the databus, and connecting it to the ‘PAGING’
RJ45 connector on the MTX as shown in below diagram.
The ARJ03P junction box can be used for easy connectivity of multiple paging
consoles on one databus.
CLIP
PAGING
Zone 8
Line 5 Line 4 Line 3Line 6
Mic 1Mic 2
-14+9
PHANTOM
GAIN
-500
MTX88
AUDAC
Caution: Only use
fuses of the same type
Warning: Do not
expose this equipment
to rain or moisture
GAIN
MID
-15 +15
HIGH
-15 +15
LOW
-15 +15
MID
-15 +15
HIGH
-15 +15
LOW
-15 +15
PHANTOM
GAIN
-50 0

100-40500
150
THNT
232
WP
GND  
GND
L
L
Zone 
WP
GND  
GND
L
L
Zone 6
WP
GND  
GND
L
L
Zone 5
WP
GND  
GND
L
L
Zone 4
WP
GND  
GND
L
L
Zone 3
WP
GND  
GND
L
L
Zone 2
WP
GND  
GND
L
L
Zone 1
WP
GND  
GND
L
L
CLIP CLIP CLIP
CLIP CLIP
GND
24 
-14+9
GAIN
-14 +9
GAIN
-14+9
GAIN

Configuring the MPX
1) Configuration of one MPX
When only one MPX is connected, no configuration is required. After connected the
MPX to the matrix as shown above, the system is ready for operation.
2) Configuration of multiple MPX
When multiple MPX are connected, the paging is priority based and priority
settings are needed to be made. An unique address should be assigned to every
MPX, whereby the lowest address ‘001’ will have the highest priority. When an
announcement is being made, and another speaker with higher priority requests for
an announcement, announcements with lower priority will be interrupted.
Priority settings should be made in the MTX web-based interface under ‘Setup’ >
‘System Configuration’ > ‘Paging’. In this screen, the address for the corresponding
microphone can be selected. After selected, the ‘Set Address’ button should be
pressed and subsequently the PTT LED’s on all MPX will start blinking. After pressing
the PTT button, the address will be assigned to the corresponding MPX microphone.

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Chapter 4
Technical specifications
Microphone type Back elektret condenser
Polar pattern Cardioid
Frequency response 50 Hz - 16 kHz
Sensitivity 45 dB
Max. SPL 130 dB
Power supply 24 V DC (from MTX)
(15V Minimal operation limit)
Power consumption 1.5 Watt
Dimensions 221,5 x 43 x 111,6 mm
Microphone length 250 mm
Weight net 0.33 Kg
Construction ABS with acrylic top
Connection RJ45 (Fixed 2 meter cable)
Bus cabling UTP Cat5E (or better)
Control databus RS485
Audio databus Differential analogue
Colour Black (RAL9004)
Paging zones MPX48 4 Zones (use with MTX48)
MPX88 8 Zones (use with MTX88)
Packaging Carton box
Accessories included Windscreen
Connection cable 2 meter (fixed)
Shipping weight & volume 2 Kg - 0.0012 Cbm

15
Notes

16
Notes