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MBA75W MKII
mobile PA system
user manual
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Musikhaus Thomann
Thomann GmbH
Hans-Thomann-Strasse 1
96138 Burgebrach
Germany
Telephone: +49 (0) 9546 9223-0
E-mail: info@thomann.de
Internet: www.thomann.de
01.12.2016, ID: 234801
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Table of contents
1 General notes............................................................................................................................................... 5
1.1 Further information........................................................................................................................... 6
1.2 Notational conventions.................................................................................................................... 7
1.3 Symbols and signal words............................................................................................................... 8
2 Safety instructions.................................................................................................................................. 10
3 Features....................................................................................................................................................... 16
4 Installation and starting up................................................................................................................ 17
4.1 Battery operation............................................................................................................................. 18
4.2 Microphone........................................................................................................................................ 18
4.3 Remote control................................................................................................................................. 19
5 Connections and controls................................................................................................................... 21
6 Technical specifications....................................................................................................................... 43
7 Plug and connection assignment.................................................................................................... 46
8 Cleaning....................................................................................................................................................... 50
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9 Protecting the environment.............................................................................................................. 51
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1 General notes
This manual contains important instructions for the safe operation of the unit. Read and follow
the safety instructions and all other instructions. Keep the manual for future reference. Make
sure that it is available to all those using the device. If you sell the unit please make sure that
the buyer also receives this manual.
Our products are subject to a process of continuous development. Thus, they are subject to
change.
General notes
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1.1 Further information
On our website (www.thomann.de) you will find lots of further information and details on the
following points:
Download This manual is also available as PDF file for you to download.
Keyword search
Use the search function in the electronic version to find the topics of
interest for you quickly.
Online guides
Our online guides provide detailed information on technical basics
and terms.
Personal consultation For personal consultation please contact our technical hotline.
Service
If you have any problems with the device the customer service will
gladly assist you.
General notes
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1.2 Notational conventions
This manual uses the following notational conventions:
The letterings for connectors and controls are marked by square brackets and italics.
Examples: [VOLUME] control, [Mono] button.
Texts and values displayed on the device are marked by quotation marks and italics.
Examples: ‘24ch’ , ‘OFF’.
References to other locations in this manual are identified by an arrow and the specified page
number. In the electronic version of the manual, you can click the cross-reference to jump to
the specified location.
Example: See
Ä
‘Cross-references’ on page 7.
Letterings
Displays
Cross-references
General notes
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1.3 Symbols and signal words
In this section you will find an overview of the meaning of symbols and signal words that are
used in this 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 pos‐
sible dangerous situation that can result in minor injury if it
is not avoided.
NOTICE! This combination of symbol and signal word indicates a pos‐
sible dangerous situation that can result in material and
environmental damage if it is not avoided.
General notes
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Warning signs Type of danger
Warning – high-voltage.
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
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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.
Do not use the device if covers, protectors or optical components are missing or
damaged.
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 block areas of ventilation. Do not install the device near any direct heat
source. Keep the device away from naked flames.
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.
NOTICE!
Risk of fire due to incorrect polarity
Incorrectly inserted batteries may destroy the device or the batteries.
Ensure that proper polarity is observed when inserting batteries.
Safety instructions
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NOTICE!
Possible damage by leaking batteries
Leaking batteries can cause permanent damage to the device.
Take batteries out of the device if it is not going to be used for a longer period.
NOTICE!
Possible damage due to incorrect storage
Deep discharge can cause batteries to become permanently damaged or lose
some of their capacity.
Before prolonged rest periods, charge the batteries to around 50 % of their
capacity and then switch the equipment off. Store the equipment at a tempera‐
ture between 10 °C and 32 °C in as dry an environment as possible. During
extended storage periods, charge the batteries to 50 % approximately every three
months.
Safety instructions
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n This equipment uses a frequency range that is free of charge and registration within the
European Union.
For more information, please visit: http://www.thomann.de.
n When operating, make sure that transmitter and receiver are set to the same channel.
n Never set more than one transmitter to the same channel.
n Make sure that no metal objects are located between transmitter and receiver.
n Avoid interference by other radio and in-ear systems.
Notes on radio transmission
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3 Features
The mobile PA system is characterized by the following features:
n Compact all-in-one system
n Mains and battery operation for maximum flexibility
n 8" wide range speaker with integrated tweeter
n Output power: 75 W RMS
n Frequency response 50 Hz … 18 kHz ± 3 dB
n Integrated UHF receiver for the supplied UHF wireless microphone, 16 channels selectable
n Built-in cassette recorder, CD player (MP3 playback), USB port and SD card slot
n Infrared remote control
n 2 MIC inputs (XLR and 1/4" jack), 2 line inputs (RCA and 1/4" jack)
n 1 line out, 1 speaker out
n Plastic housing with tripod flange, carrying handle and casters
Features
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4 Installation and starting up
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.
Create all connections while the device is off. Use the shortest possible high-quality cables for
all connections. Take care when running the cables to prevent tripping hazards.
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 and starting up
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4.1 Battery operation
You can also operate the device independently of the mains power supply with the two
installed rechargeable lead gel batteries (12 V, 5 Ah).
4.2 Microphone
Use only LR6 AA (1.5 V) batteries or rechargeable Ni-MH batteries (nickel metal hydride). Note
the correct polarity when inserting the batteries.
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4.3 Remote control
Only use batteries of type CR2025 (3.5 V). To open the battery compartment, press the lock on
the side downwards and then pull the battery holder out. When inserting the battery in the
battery holder, the positive terminal must point upwards. Slide the battery holder with the bat‐
tery inserted back into the battery compartment until it engages.
Insert the battery
Installation and starting up
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Installation and starting up
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5 Connections and controls
Rear view - overview
Connections and controls
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Partial view A
Connections and controls
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1 [CD VOL.]
Volume control for CD playback with on/off switch.
2 [TAPE VOL.]
Volume control for cassette playback with on/off switch.
3 [LINE IN VOL.]
Volume control for the external line input.
4 [LINE IN]
6.35 mm jack audio input for amplifying external audio signals with line level.
5 [LINE IN R / L]
Cinch audio input for amplifying external audio signals with line level.
6 [MIC VOL.]
Volume control for cabled microphone input.
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7 [MIC IN 1]
Microphone input 6.35 mm jack.
8 [XLR MIC IN 2]
XLR microphone input (symmetrical).
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Partial view B
Connections and controls
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9 [EXT.SPK]
Connect an external speaker here if necessary. This does not switch the installed speaker off.
10 [DC IN 24V/3A]
Connection for operating a device via an external DC voltage source that delivers 24 V with at least 3A.
11 [BATTERY ELECTRICITY]
Charge status display for the built-in battery.
– When all the segments are lit up, the battery is fully charged. If only a few segments are lit up, this shows the
respective level of discharge.
– If the display for the mains power supply flashes green, the battery is being charged.
– If the display lights up red, you should switch on the external power supply. If the red display goes out, the device
has switched itself off due to the battery being flat.
12 [MIX OUT]
Connect another transmission system or recording device here.
Connections and controls
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13 [MAIN VOL.]
To adjust the main volume (microphone and CD/cassette).
14 [BASS]
To adjust the bass level.
15 [TREBLE]
To adjust the treble level.
16 [OFF/ON]
Main switch to turn the device on and off.
17 Mains connection socket with fuse holder.
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Partial view C
Connections and controls
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18 Cassette compartment
19 [PAUSE]
A single press pauses playback or recording. Another press continues playback or recording.
20 [ST]/[EJ]
A single press stops playback, recording or winding.
A second press opens the cassette compartment cover.
21 [F.FWD]
Winds the tape onto the right-hand reel.
22 [REW]
Winds the tape onto the left-hand reel.
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23 [PLAY]
Starts playback of the audio track.
24 [REC]
Activates the recording function. Also press [PLAY]to start recording.
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Partial view D
Connections and controls
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25 CD slot
Insert a CD here. From around the middle of the CD, the device will automatically transport the remainder of it.
26 [POWER]
Press this button to switch the device on (the main [OFF/ON] switch must be in the ON position for this). To switch the
device off, keep this button pressed for 2 seconds.
27 [MODE]
Press this button to change the operating mode (CD→USB→Memory card).
28 [STOP/EJ]
Press this button to stop playback. Press this button again to have the device eject the disc slightly so that you can
remove it.
29
[PLAY/PAUSE]
Press this button to start or stop playback.
30 [SKIP PREV.] , [SKIP NEXT]
Press this button to skip forward or backward. Then press the [PLAY/PAUSE] button to continue playback.
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31
[FOLDER] , [FOLDER]
This button allows you to select the next or previous folder for playback.
32 [SD CARD]
Insert SD or MMC cards into this slot.
33 [REP./ID3]
Press this button once to repeat the current track. Press it twice to repeat all of the tracks in the current folder and
three times to repeat all tracks. The repeat function is interrupted if you press the button four times.
Press this button for at least two seconds to display the information saved in the MP3 file about the track currently
playing.
34 [RAN/ENT]
This button allows you to start playing all tracks in a random order. Press the button again to pause playback.
35 [PROG]
This button allows you to start programming mode, which enables you to define the sequence of tracks yourself.
Press [PROG], select a track and press [RAN/ENT]. Repeat this step for all tracks that are to be included in the program.
To play the tracks you have selected in this manner, press [PLAY/PAUSE] . To interrupt playback, press [PROG]
twice.
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36 [MUTE]
Mutes the output or un-mutes it again.
37 [IR]
The infra-red receiver for the remote control signals.
38 [USB]
Connect USB storage media here.
39 Display
Displays the CD playback status with the track number and running time.
Connections and controls
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Partial view E
Connections and controls
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40 [VOL.]
Turn the volume control clockwise to increase the volume. Turn it counter-clockwise to reduce the volume.
41 [ON/OFF]
When the device is switched on, this display lights up.
42 [AF]
AF signal display: The red LED “AF” lights up if the microphone signal is being received.
43 [RF]
RF signal display: The yellow LED “RF” lights up if the device is receiving a carrier signal.
44 Display
Shows the channel selected with UP / DOWN.
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45 [UP]
To select the next channel up.
46 [DOWN]
To select the next channel down.
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Remote control
Connections and controls
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1 Number keypad
Press one of these buttons to call up the desired track directly.
2
[EJECT]
Press this button to have the device eject the disc slightly so that you can remove it.
3 [PROG]
This button allows you to start programming mode, which enables you to define the sequence of tracks yourself.
Press [PROG], select a track and press [ENTER]. Repeat this step for all tracks that are to be included in the program. To
play the tracks you have selected in this manner, press [PLAY/PAUSE] . To interrupt playback, press [PROG] twice.
4 [RAN]
This button allows you to start playing all tracks in a random order. Press the button again to pause playback.
5 [REPEAT / ID3]
Press this button once to repeat the current track. Press it twice to repeat all of the tracks in the current folder and
three times to repeat all tracks. The repeat function is interrupted if you press the button four times.
Press this button for at least two seconds to display the information saved in the MP3 file about the track currently
playing.
Connections and controls
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6
[PLAY/PAUSE]
Press this button to start or stop playback.
7
[STOP]
Press this button to stop playback.
8 [PREV.] , [NEXT]
Press this button to skip forward or backward. Then press the [PLAY/PAUSE] button to continue playback.
9
Mutes the output or un-mutes it again.
10 [ENTER]
Confirms an input.
11 [A-B]
Repeat a passage. Press this button during playback. This marks the start of the passage. At the end of the passage to
be repeated, press the button again. The passage will be repeated until you press [A-B] again.
12 [MODE]
Press this button to change the operating mode (CD→USB→Memory card).
Connections and controls
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13
,
Fast forward or rewind.
14 [FOLDER]
This button allows you to select the next folder for playback.
Connections and controls
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1 Microphone head grill to protect from damage and reduce wind and breathing
noise.
2 Aluminium housing
3 Battery compartment
Insert 2 × 1.5 V–batteries here.
4 Channel switch
Select the required transmission channel.
5 Battery status display
This display flashes red if the batteries are almost flat.
6 On / off switch
Switches the power supply to the microphone on and off.
Wireless microphone
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6 Technical specifications
Amplifier / speaker
Inputs 1 × XLR / 1/4" jack combo socket for microphone input
1 × 1/4" phone socket for microphone input
1 × 1/4" phone socket for line input
2 × RCA sockets for additional signal input, e.g. for CD players or similar line
level devices.
Outputs 1 × 1/4" phone socket for line output
1 × 1/4" phone socket for speaker output
Speakers 8" wide range speaker with integrated tweeter
Frequency range 50 Hz … 18 kHz (±3 dB)
Output power 75 W
Technical specifications
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Radio link
Carrier frequency UHF band (863 MHz … 865 MHz)
Modulation type Frequency modulation (FM)
Signal-to-noise ratio > 105 dB
Transmission power of the wireless microphone approx. 10 mW
THD < 0.5 %
General
Voltage supply
230 V , 50 Hz
2 × 12 V lead-gel rechargeable batteries (each 5 Ah), maintenance-free
Fuse 5 mm × 20 mm, 5 A, 250 V, slow-blow
Operating time per battery charge 4 h … 6 h
Charging time approx. 8 h
Technical specifications
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Dimensions (W × H × D) 330 mm × 440 mm × 240 mm
Weight 13 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)
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1 Signal (left)
2 Signal (right)
3 Ground, shielding
1 Ground, shielding
2 Signal (in phase, +)
3 Signal (out of phase, –)
Three-pole 1/8" mini phone jack
(stereo, unbalanced)
XLR plug (balanced)
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Drawing and table indicate the pin assignment of an RCA plug.
1 Signal
2 Ground, shielding
RCA connection
Plug and connection assignment
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8 Cleaning
Clean the device components that are accessible from the outside regularly. The cleaning fre‐
quency depends on the operating environment: damp, smoky or particularly dirty environ‐
ments can cause greater accumulation of dirt on the device components.
n Clean with a dry soft cloth.
n Stubborn dirt can be removed with a slightly dampened cloth.
n Never use solvents or alcohol for cleaning.
The fan grids of the device must be cleaned on a regular basis to remove dust and dirt. Before
cleaning, switch off the device and disconnect AC-powered devices from the mains. Use a lintfree damp cloth for cleaning. Never use solvents or alcohol for cleaning.
Device components
Fan grids
Cleaning
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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 these materials with your normal household waste, but make sure that
they are fed to a recovery. Please follow the notes and markings on the packaging.
Batteries must not be disposed of as domestic waste or thrown into fire. Dispose of the bat‐
teries according to national or local regulations regarding hazardous waste. To protect the
environment, dispose of empty batteries at your retail store or at appropriate collection sites.
Disposal of the packaging mate‐
rial
Disposal of batteries
Protecting the environment
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This product is subject to the European Waste Electrical and Electronic Equipment Directive
(WEEE). Do not dispose with your normal household waste.
Dispose 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 your old device
Protecting the environment
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Notes
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Notes
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Musikhaus Thomann · Hans-Thomann-Straße 1 · 96138 Burgebrach · Germany · www.thomann.de
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