Mon A10, A12, A15
active monitor
user manual
Musikhaus Thomann e.K.
Treppendorf 30
96138 Burgebrach
Germany
Telephone: +49 (0) 9546 9223-0
E-mail: info@thomann.de
Internet: www.thomann.de
16.09.2013
Table of contents
1 General notes............................................................................................................................................... 4
2 Safety instructions..................................................................................................................................... 7
3 Features....................................................................................................................................................... 11
4 Installation.................................................................................................................................................. 12
5 Connections and operating elements........................................................................................... 14
6 Technical specifications....................................................................................................................... 18
7 Plug and connection assignment.................................................................................................... 20
8 Troubleshooting...................................................................................................................................... 24
9 Protecting the environment.............................................................................................................. 26
Table of contents
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1
General notes
This user manual contains important information on safe operation of the device. Read and
follow all safety notes and all instructions. Save this manual for future reference. Make sure
that it is available to all persons using this device. If you sell the device to other users, be sure
that they also receive this manual.
Our products are subject to a process of continuous development. We therefore reserve the
right to make changes without notice.
General notes
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This section provides an overview of the symbols and signal words used in this user manual.
Signal word Meaning
DANGER! This combination of symbol and signal word
indicates an immediate dangerous situation
that will result in death or serious injury if it is
not avoided.
CAUTION! This combination of symbol and signal word
indicates a possible dangerous situation that
can result in minor injury if it is not avoided.
NOTICE! This combination of symbol and signal word
indicates a possible dangerous situation that
can result in material and environmental
damage if it is not avoided.
Warning signs Type of danger
Warning – high-voltage.
Symbols and signal words
General notes
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Warning signs Type of danger
Warning – danger zone.
General notes
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2
Safety instructions
This device is intended to be used in a sound reinforcement system. Use the device only as
described in this user manual. Any other use or use under other operating conditions is consid‐
ered to be improper and may result in personal injury or property damage. No liability will be
assumed for damages resulting from improper use.
This device may be used only by persons with sufficient physical, sensorial, and intellectual
abilities and having corresponding knowledge and experience. Other persons may use this
device only if they are supervised or instructed by a person who is responsible for their safety.
DANGER!
Danger for children
Ensure that plastic bags, packaging, etc. are disposed of properly and are not
within reach of babies and young children. Choking hazard!
Ensure that children do not detach any small parts (e.g. knobs or the like) from
the unit. They could swallow the pieces and choke!
Never let children unattended use electrical devices.
Intended use
Safety
Safety instructions
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DANGER!
Electric shock caused by high voltages inside
Within the device there are areas where high voltages may be present. Never
remove any covers.
There are no user-serviceable parts inside.
DANGER!
Electric shock caused by short-circuit
Always use proper ready-made insulated mains cabling (power cord) with a pro‐
tective contact plug. Do not modify the mains cable or the plug. Failure to do so
could result in electric shock/death or fire. If in doubt, seek advice from a regis‐
tered electrician.
Safety instructions
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CAUTION!
Possible hearing damage
The device can produce volume levels that may cause temporary or permanent
hearing impairment. Over an extended period of time, even levels that seem to
be uncritical can cause hearing damage.
Decrease the volume level immediately if you experience ringing in your ears or
hearing impairment. If this is not possible, keep a greater distance or use suffi‐
cient ear protectors.
NOTICE!
Risk of fire
Do not cover the device nor any ventilation slots. Do not place the device near
any direct heat source. Keep the device away from naked flames.
Safety instructions
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NOTICE!
Operating conditions
This device has been designed for indoor use only. To prevent damage, never
expose the device to any liquid or moisture. Avoid direct sunlight, heavy dirt, and
strong vibrations.
NOTICE!
Power supply
Before connecting the device, ensure that the input voltage (AC outlet) matches
the voltage rating of the device and that the AC outlet is protected by a residual
current circuit breaker. Failure to do so could result in damage to the device and
possibly injure the user.
Unplug the device before electrical storms occur and when it is unused for long
periods of time to reduce the risk of electric shock or fire.
Safety instructions
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3
Features
The active monitors are suitable for amateur use in smaller rooms as well as professional use
on very large stages.
Special features of the device:
n 2-way system: 1" tweeter and 10", (item no. 309203), 12", (item no. 309205) or 15" woofer
(item no. 309207)
n Coaxially arranged driver combination
n Class-D amplifier
n Dual limiter
n XLR and phone connections
n Integrated flange for tripod mounting
Features
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4
Installation
Unpack and carefully check that there is no transportation damage before using the unit. Keep
the equipment packaging. To fully protect the device against vibration, dust and moisture
during transportation or storage use the original packaging or your own packaging material
suitable for transport or storage, respectively.
Establish all connections as long as the unit is switched off. Use the shortest possible highquality cables for all connections.
NOTICE!
Possible property damage by magnetic fields
Loudspeakers produce a static magnetic field. Therefore, maintain an appropriate
distance to devices that can be adversely affected or damaged by an external
magnetic field.
Installation
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NOTICE!
Use of stands
When mounting the device onto a stand, ensure that the stand is in a safe and
stable position and that the weight of the device does not exceed the maximum
permissible load capacity of the stand.
Installation
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5
Connections and operating elements
Rear panel
Connections and operating elements
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1 XLR chassis plug LINK
This outlet can be used to feed the signal to further active speakers.
2 XLR / phone combo socket LINE IN
Line level input for balanced or unbalanced signals.
3 Ground/Lift button
If a ground loop is causing hum you can use this switch to cut the connection between the earth pin of the device
and the signal ground in the device.
4 IEC chassis connector for operating voltage supply.
5 Fuse holder.
6 Slide switch LINE VOLTAGE
This switch is used to adapt the device to the local supply voltage.
115: AC 105…120 V
230: AC 210…240 V (factory default setting)
Connections and operating elements
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7 Mains switch POWER
Turns the unit on or off.
8 MONITOR/FOH button
Use this switch to select various EQ characteristics, suitable for different applications.
MONITOR: For use as stage monitor with feedback suppression
FOH: For use as PA speaker (front of house)
9 LED ON
This LED lights up green when the device is switched on and voltage supply is present.
Connections and operating elements
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10 LED SIGN/LIMIT
This LED lights up green on incoming input signal.
This LED lights up red when the internal output signal is being limited (excessive input signal!).
11 Rotary control LEVEL
Control to adjust the LINE input level. Turn the knob clockwise or counter-clockwise to increase or decrease the input
volume.
In zero-position, the signal is completely attenuated. In maximum position, the signal is processed without any
attenuation.
Connections and operating elements
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6
Technical specifications
Pro Mon A10,
Item no. 309203
Pro Mon A12,
Item no. 309205
Pro Mon A15,
Item no. 309207
System 2-way active monitor
Speakers 1 × 10" woofer 1 × 12" woofer 1 × 15" woofer
1 × 1" tweeter 1 × 1.35" tweeter 1 × 1.35" tweeter
Input XLR / 1/4" combo sockets
Output XLR chassis plug
Input impedance 30 kΩ (balanced), 15 kΩ (unbalanced)
Frequency response 60 Hz… 20 kHz 50 Hz… 20 kHz 45 Hz … 20 kHz
Output power RMS: 250 W
Peak: 500 W
RMS: 350 W
Peak: 700 W
RMS: 450 W
Peak: 900 W
Maximum SPL (SPL) 123 dB 124 dB 126 dB
Technical specifications
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Pro Mon A10,
Item no. 309203
Pro Mon A12,
Item no. 309205
Pro Mon A15,
Item no. 309207
Dispersion angle (V × H) 80° × 80° 80° × 80° 60° × 60°
Operating supply voltage
AC 230 V , 50 Hz / AC 110 V ,
60 Hz
AC 230 V , 50 Hz / AC 110 V ,
60 Hz
AC 230 V , 50 Hz / AC 110 V ,
60 Hz
Dimensions (W × H × D) 480 mm × 300 mm × 420 mm 510 mm × 340 mm × 500 mm 610 mm × 365 mm × 545 mm
Weight 11 kg 15 kg 19.5 kg
Technical specifications
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7
Plug and connection assignment
This chapter will help you select the right cables and plugs to connect your valuable equip‐
ment in such a way that a perfect sound experience is ensured.
Please note these advices, because especially in ‘Sound & Light’ caution is indicated: Even if a
plug fits into the socket, an incorrect connection may result in a destroyed power amp, a short
circuit or ‘just’ in poor transmission quality!
Unbalanced transmission is mainly used in semi-professional environment and in hifi use.
Instrument cables with two conductors (one core plus shielding) are typical representatives of
the unbalanced transmission. One conductor is ground and shielding while the signal is trans‐
mitted through the core.
Unbalanced transmission is susceptible to electromagnetic interference, especially at low
levels, such as microphone signals and when using long cables.
In a professional environment, therefore, the balanced transmission is preferred, because this
enables an undisturbed transmission of signals over long distances. In addition to the conduc‐
tors ‘Ground’ and ‘Signal’, in a balanced transmission a second core is added. This also transfers
the signal, but phase-shifted by 180°.
Introduction
Balanced and unbalanced trans‐
mission
Plug and connection assignment
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Since the interference affects both cores equally, by subtracting the phase-shifted signals, the
interfering signal is completely neutralized. The result is a pure signal without any noise inter‐
ference.
1 Signal
2 Ground, shielding
1 Signal (in phase, +)
2 Signal (out of phase, –)
3 Ground
1/4" TS phone plug (mono,
unbalanced)
1/4" TRS phone plug (mono, bal‐
anced)
Plug and connection assignment
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1 Signal (left)
2 Signal (right)
3 Ground
1 Ground, shielding
2 Signal (in phase, +)
3 Signal (out of phase, –)
1/4" TRS phone plug (stereo,
unbalanced)
XLR plug (balanced)
Plug and connection assignment
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1 Ground, shielding
2 Signal
3 Bridged to pin 1
XLR plug (unbalanced)
Plug and connection assignment
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8
Troubleshooting
In the following we list a few common problems that may occur during operation. We give you
some suggestions for easy troubleshooting:
Symptom Remedy
The unit does not work 1. Check the power supply connection and the position
of the mains switch POWER.
No sound 1. Check the position of the rotary control LEVEL.
2. Check whether the LED SIGN/LIMIT lights up green. If
it doesn't, the input signal is too weak
3. Check for correct signal cable connection.
4. Check the signal cable and/or the signal source.
5. Try using another signal cable.
Troubleshooting
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Symptom Remedy
Audible distortion Excessive input signal. Reduce the signal level.
Never operate the loudspeaker with such a high signal
level that the SIGN/LIMIT LED lights solid red!
Different channel levels (when
using two monitors)
1. Make sure that for both channels the same type of
cable (balanced, unbalanced) is used.
2. Make sure that your speaker system is fully connected
and both speakers have the same input impedance.
Hum and noise 1. Use the ‘Ground/Lift’ switch, if applicable on all ampli‐
fiers connected to the system.
2. Make sure that only balanced cables are used.
3. Make sure that all audio devices are connected on the
same power grid circuit and therefore share the same
ground reference.
If the procedures recommended above do not succeed, please contact our Service Center. You
can find the contact information at www.thomann.de.
Troubleshooting
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9
Protecting the environment
For the transport and protective packaging, environmentally friendly materials have been
chosen that can be supplied to normal recycling.
Ensure that plastic bags, packaging, etc. are properly disposed of.
Do not just dispose of these materials with your normal household waste, but make sure that
they are collected for recycling. Please follow the notes and markings on the packaging.
This device is subject to the European directive 2012/19/EU.
Do not dispose of the device with your normal household waste.
Dispose of this device through an approved waste disposal firm or through your local waste
facility. When discarding the device, comply with the rules and regulations that apply in your
country. If in doubt, consult your local waste disposal facility.
Disposal of the packaging mate‐
rial
Disposal of your old device
Protecting the environment
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Musikhaus Thomann e.K. · Treppendorf 30 · 96138 Burgebrach · Germany · www.thomann.de
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