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MA 150
active 2 way
full-range monitor
user manual
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Musikhaus Thomann e.K.
Treppendorf 30
96138 Burgebrach
Germany
Telephone: +49 (0) 9546 9223-0
E-mail: info@thomann.de
Internet: www.thomann.de
05.06.2012
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Table of contents
1 General notes............................................................................................................................................... 4
2 Safety instructions..................................................................................................................................... 7
3 Features....................................................................................................................................................... 12
4 Installation.................................................................................................................................................. 13
4.1 Pin assignment.................................................................................................................................. 14
5 Connections and operating elements........................................................................................... 16
6 Technical specifications....................................................................................................................... 20
7 Protecting the environment.............................................................................................................. 22
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.
This section provides an overview of the symbols and signal words used in this user manual.Symbols and signal words
General notes
active 2 way full-range monitor
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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.
General notes
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Warning signs Type of danger
Warning – danger zone.
General notes
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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 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.
CAUTION!
Risk of injury due to heavy weight
Due to the heavy weight of the device, at least two persons are required for trans‐
port and installation.
Safety instructions
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NOTICE!
Risk of fire
Do not block areas of ventilation. Do not install the device near any direct heat
source. Keep the device away from naked flames.
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.
Safety instructions
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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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Features
Special features of this active 2-way full-range monitor:
n 1 × 15" woofer, 1 × cone tweeter
n Output power 150 W
n Frequency response 45 Hz … 18 kHz
n 3-band equalizer
n Line and microphone inputs (XLR), line out (XLR), NL4 out for passive speakers
n Gain and level control
n Tripod mounting flange
n Trapezoid wooden cabinet with felt cover
Features
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Installation
Unpack and check carefully 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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4.1
Pin assignment
You can use XLR plugs with balanced or unbalanced wiring. In the following, we will give you
an overview of the various options.
XLR mounting sockets serve as signal inputs, XLR mounting plugs serve as signal outputs.
Drawing and table indicate the XLR pin assignment.
Balanced wiring:
1 Ground, shielding
2 Positive signal (+)
3 Negative signal (–)
XLR connections for signal in
and outputs
Installation
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Unbalanced wiring:
1 Ground, shielding
2 Signal
3 Bridged to pin 1
Installation
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Connections and operating elements
the box
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Connections and operating elements
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1 ON/OFF
Use the mains switch to turn the unit on or off.
2 IEC chassis connector for operating voltage supply with fuse holder.
3 SPEAKER OUTPUT
NL4 output to connect a passive monitor.
4 LINE OUTPUT
XLR output to connect another active monitor.
5 LINE INPUT
XLR input for line signals (PA, preceded speakers etc.).
6 MIC INPUT
XLR microphone input.
Connections and operating elements
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7 LF
Control to attenuate or increase the low frequencies. Turn it clockwise / counter-clockwise to increase / decrease the
lows by ± 6 dB.
8 MF
Control to attenuate or increase the mid frequencies. Turn it clockwise / counter-clockwise to increase / decrease the
mids by ± 6 dB.
9 HF
Control to attenuate or increase the high frequencies. Turn it clockwise / counter-clockwise to increase / decrease the
treble by ± 6 dB.
10 LINE VOL
Control to adjust the volume of the line input (Gain). Turn the knob clockwise / counter-clockwise to increase /
decrease the volume of the input.
Connections and operating elements
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11 MIC VOL
Control to adjust the volume of the microphone input (Level). Turn the knob clockwise / counter-clockwise to
increase / decrease the volume of the input.
12 LED PEAK
Indicates clipping. If the LED flickers or lights up during operation, the input level is too high. In this case, reduce the
volume of the input signal.
Connections and operating elements
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Technical specifications
System Active 2-way full-range monitor with built-in crossover
Speakers 1 × 15" woofer
1 × cone tweeter
Connections NL4 outlet for passive speakers
LINE in and out (XLR)
MIC input (XLR)
Frequency response 45 Hz … 18 kHz (–3 dB)
Sound pressure level (1 m) 120 dB
Level adaptation Treble: ± 6 dB, 10 kHz
Mids: ± 6 dB, 500 Hz
Bass: ± 6 dB, 100 Hz
Output power 150 W
Technical specifications
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THD Line: 0.02 %
Microphone: 0.04 %
Load impedance 4 Ω
Input impedance
10 kΩ
Operating voltage supply
AC 230 V , 50/60 Hz
Housing Wood, trapezoid, black felt cover
Dimensions (W × H × D) 715 mm × 450 mm × 505 mm
Weight 24.35 kg
Technical specifications
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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 2002/96/EC.
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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