The box MBA75W MK II User manual

Owner’s Manual
COMPACT POWERED SPEAKER
with integrated cassette player/recorder
MBA75W MK II

2
Important Safety Instructions
For your own safety you must read this section in full rst!
Intended use
This device is intended exclusively for the transmission of audio signals according to this manual and the
specications given here. By using it in any other way you face the risk of electric shock. No warranty
claims will be granted for damage resulting from improper use!
Risk of electrical shock!
• Connect the device only to a properly wired and earthed electrical wall socket providing one of the
mains voltages listed in the chapter “Technical specications” of this manual.
• NEVER operate the device if the power plug or power the cord is damaged.
• NEVER submerse the device in water. Liquid getting into the device will risk a short circuit and will be
hazardous.
• NEVER expose the device to direct precipitation or moisture and never use it in a damp or wet
environment.
• Do not subject the device to high temperatures, direct sunlight, severe vibrations, shocks or tremors,
or excessive dust.
• Ensure that the power cord does not become wet during operation.
• You must NEVER open the housing of the device or try to repair it. There are no user serviceable
parts inside. Warranty will become void if you open the housing and you face the risk of electric
shock.
• Do not place objects containing uids, e.g. ower vases or beer bottles, on or near the device.
• Notice regarding power disconnection:
To disconnect the device from the power source the power plug must be removed from the power
socket. For this reason the device should be placed in a position where a constant unobstructed
access to the power socket is assured, thus in an emergency situation you are able to immediately
pull out the power plug. To eliminate the risk of re you must completely disconnect the power plug
from the power socket after the device has been used.
• Always grasp the power cord by the plug. Do not pull on the cord itself and never touch the power
cord with wet hands as this could result in a short circuit or an electrical shock. Do not place the
device, other speaker cabinets or anything else on the power cord and make sure that it does not
become clamped. Place the power cord in a position where it can not be trod on. A damaged power
cord can cause a re or an electrical shock. Check the power cord from time to time. Should it become
damaged contact our customer service centre to have it replaced.
 Riskofre!
• NEVER leave the device unattended while it is switched on.
• Do not place any open sources of re, like candles, on the device.
• Never operate the device in the vicinity of heat sources such as cookers, heating elements, lighting
equipment, smoke machines, or other heat producing installations.
• When a thunderstorm with the risk of lightening threatens please disconnect the device from the mains
power.
Risk of personal injury!
• Keep the power cord and device away from children. Children frequently underestimate the dangers of
electrical equipment.
• Ensure a safe location for the device.
• Do not operate the device if it has sustained a fall or is damaged. Arrange for the device to be checked
and/or repaired by qualied technicians.
• Important! Keep sufcient distance from the speaker box when operated with high volume
level. Listening to music with high sound pressure level may cause permanent damage to your
hearing!

3
Cleaning and Maintenance
• Disconnect the unit from the mains before any cleaning. Clean the surface of the housing with a damp
cloth. Never use cleaning agents that contain petrol, solvents, or any aggressive substance. They
could damage the housing’s surface.
Introduction
Thank you for choosing our COMPACT POWERED SPEAKER. In order to perform at its best, please
read this manual thoroughly before operating the unit, and retain it for future reference. Please save this
manual. The unit has an elegant design, with a rugged and durable case, reliable performance, water
resistance with ber material, unusual PCB device, clear and powerful sound. It is simple to operate.
The unit is suitable for both indoor and outdoor use with duration of 2.5-9 hours, depending on the
volume size. Charging time for the unit is about 8 hours. Wheels can tted for effortless moving around.
Please read this manual carefully so you can take advantages of all the features of the MBA75W MK II.
Retain the manual for future reference. Thank you again for making the right choice in purchasing the
THE BOX MBA75W MK II.
Features
XOutput power 75 watt RMS
XBuilt-in cassette player, CD -player and wireless UHF microphone transmission
XMicrophone requires 2 x 1.5 v AA batteries
X3 inputs for wired audio sources
XLine out and speaker output
XOperation with mains power of built-in rechargeable battery
XStand flange
XIncl. detachable trolley for easy transportation - 13 kg only!
XAverage battery life: approx. 4 (music playback) - 6 h (speech)
XDimensions: (HxWxD): 440 x 330 x 240 mm
XWeight: approx. 13 kg incl. batteries
XSupport for a second wireless microphone optional
Useful Data
Please write your serial number here for future reference:
Serial Number:
Data of Purchase:
Purchased at:

4
Identifying the Parts
1. Carry Handle: Used to carry the unit.
2. Rearhousingandplasticbercase
3. Front Cover
4. Loudspeaker: Built in 8 inch full range woofer speaker.
5. Tripod stand socket: 35mm jack to set up the regular tripod stand
 onthebottom.
6. Grille cover: Antirust protection design
7 Trolleybracketwithwheels
8. Trolleywheelsocket:Totakeoffthetrolleybypressingupxed
socket
A / Wireless Receiver Module
A1. RFSignalIndicator:TheyellowLED“RF”lightsupwhencarriersignalisbeingreceived.
A2. The LED display: When selecting a channel with “A4” controls, the display shows the
dialed-in channel.
A3. AFSignalIndicator:TheredLED“AF”lightsupwhenmicrophonesignalisbeingreceived.
A4. ChannelselectordialUP/DOWNfor16usersselectablechannels.
A5. Power ON/OFF: Indicator is lit when the device is switched on.
A6. Volumecontrol:Rotatevolumeknobclockwisetoincreasemicrophonevolumetodesire
level or counterclockwise to decrease volume until the power switch off.

5
B / Volume, Tone Quality and Master Control Panel
-Master Panel Control
B1. The CD VOL: Volume control with on/off.
B2. The TAPE VOL.: Tape volume control with on/off.
B3. Line in VOL: Volume control for external audio input.
B4. 6.3mm Ø/RCA Audio Line in: To amplify external audio inputs likes CD, DVD.
B5. The volume control for wired MIC.
B6. 6.3mm Ø Microphone input jack.
B7. The balanced input XLR Jack for MIC.
-Power, Vol. &Tone control
B8 EXT.SPK-Connectanextensionspeakertothissocket.Thiswillnotdisconnectthebuilt-in
speaker
B9 DCIN24V/3AsocketforusingthedevicewithexternalDCpower.
B10BATTERYELECTRICITY-chargeleveldisplayforthebuilt-inrechargeablebattery
 (1).Allsegmentslit-batteryfullycharged.
  Onlysomesegmentslit-batterypowerdecreased.
 (2).ConnectwithACpower,Flashinggreen:showsthesituationforbatterycharging
 (3).SolidRed-youshouldturnontheexternalpowersupply.
  Redsignaloff-Thepowerhasbeenshutdownordeviceinlowbatterypower.
B11 MIXOUT:ConnectwithwirelesstransmitterorPAbroadcastingsystem.
B12 MAIN VOL. - to control the overall (microphone and music) volume level
B13BASS-tocontroltheoverallbasslevel.
B14Treble-tocontroltheoveralltreblelevel.

6
C / Power Descriptions
C1. POWER SWITCH:
- POWER ON (O); POWER OFF (—), make sure the unit is fully turned off to prevent current leakage
when not in use.
- The Green ashing lights will be switched off once the batteries are fully charged.
C2. AC MAINS POWER SOCKET: Connect any power voltage between 100-240V here.
C3. FUSE (20mm x 5A).
Note: To Obtain the optional rechargeable batteries. Make sure to recharge the batteries before using
them. The unit cannot be used to rechargeable batteries other than those specically designed
for it.
* Lead Acid battery 12V/5A (2 pieces).
T / Location of Tape Controls
T1. EJECT: Press here to open the cassette compartment.
T2. DIGITAL COUNTER: 4digit LCD counter with back light.
T3. RESET: To reset the counter.
T4. SPEED ADJUSTMENT: to adjust the tape speed.
T5. PLAY MODE SELECTOR:
(1) ENDLESS
(2) ONE CYCLE
(3) REPEAT BOTH SIDES ONCE
T6. FAST FORWARD: to wind the tape forward.
T7. FORWARD PLAY: to start playback forward.
T8. STOP: to stop playback, recording, or winding.
T9. REVERSE PLAY: to start playback of the reverse track.
T10. REWIND: to rewind the tape.
T11. RECORD: to activate the record mode.
NOTE ON UNIT OPERATION:
Make sure the recorder is turned off by pressing the stop button before turning off the main power
switch. The cassette operating switch (B2) is the second switch located on the right hand side, turn anti-
clockwise to reduce volume and switch off.

7
D / CD/USB/SD/MMC Audio Music Player
1. POWER: In power OFF mode, press this key to power the unit up.
In power ON mode, keep this key pressed for 2 seconds, to power the unit off.
2. LCD DISPLAY: Shows CD status including track number and playing time.
3. PLAY/PAUSE: Press once to pause playback, press again to restart it.
4. REV/SKIP: Press once or several times to select previous track number(s)/le(s).
During playback keep button pressed for more than 0.7 sec to reverse the
playback.
5. CUE/SKIP: Press once or several times to select next track number(s)/le(s).
During playback keep button pressed for more than 0.7 sec to fast forward the
playback.
6. FIND: In MP3 mode, press this key once to change the search mode to “FILE” search.
Press this key twice to change the search mode to “ALBUM” search. If you keep
this button pressed the track is displayed. Press again to display ID3 TAGs.
7. STOP/EJECT: Press to stop playing. Press again to eject the disk gradually.
8. FUNC: Press this button to cyclically change the operation mode (CD→USB→CARD).
9. FOLDER -DOWN: In stop mode: Skip the starting play folder to previous folder.
In normal play mode: Skip the playing le to the previous folder’s rst le.
10. FOLDER-UP: In stop mode: Skip the starting play folder to next folder.
In normal play mode: Skip the playing le to the next folder’s rst le.
11. PROG: Set device to programming mode. If [stop] key is pressed in programming mode,
then program is all cleared.
12. REPEAT: If this key is pressed in MP3 or USB mode, the PLAY mode is changed cyclically
like this:
PLAY ALL RANDOM→ REPEAT TRACK→ REPEAT FOLDER→ REPEAT ALL→
RANDOM REPEAT→ PLAY ALL
If this key is pressed in CD mode, PLAY mode is changed cyclically like this:
PLAY ALL RANDOM→ REPEAT TRACK→ REPEAT ALL→ RANDOM REPEAT→
PLAY ALL
13. SD/MMC CARD: This slot accepts SD and MMC cards.
14. IR: The infrared sensor receives the signals from the remote control handset.
15. USB socket: Connect USB devices here. Although USB ash memory and USB HD devices are
supported, we cannot guarantee, that every USB device will be recognized correctly.
16. DISPLAY: When playing a MP3 CD, and this key is pressed, the LCD display will be changed
cyclically as shown here: Track number and playing Time → total number of songs
→ name of the playing song → Total number of folders and total number of songs.
17. ESP: Press this key in CD mode, the ESP display is lit and the device is now in
electronic anti-shock state. The electronic anti-shock time is about 40 seconds.
Press “ESP” key again, to cancel the ESP function.
18. Numeric buttons: Press these buttons, to directly call up a track for playback.
19. MUTE: press this key in playing mode to mute the audio output. Press again to recover it.

8
20. VOL-: When this key is pressed, the volume will decrease by 1dB per step, the min.
volume is 0dB.
21. VOL+: When this key is pressed, the volume will increase by 1dB per step, the max.
volume is 30dB.
Notes:
1. When you insert the disk into the CD player or you take out the disk, it is necessary to let the CD
player’s mechanism draw the disk in and out automatically. You may not push or pull out the disk
by hand before the disk is conclusively ejected out of CD slot. Otherwise the CD mechanism will be
damaged and normal operation will be terminated.
2. When using the remote control handset, it shall be pointed to the infrared sensor (IR) on the front
panel of the unit. The maximum receiving distance is 5 meters. The battery (model CR2025 3V) must
be put into the battery compartment of the remote control.
3. Battery installation of remote control handset:
Press and hold the tenon located on lower left-hand corner of the rear remote controller, pull out
the empty battery set by the slot at the right.
Place the fresh battery (positive electrode faces upwards) according to its correct polarity.
Push the battery bracket back to the xed position.
4. If the unit starts to react unreliably to remote controlling, the battery is exhausted and you have to
replace it by a fresh one with same specs.
Handheld Transmitter
H1. Steel grille: capsule protection to prevent any damage.
H2. Aluminium neck ring: logo printing and xed top and capsule.
H3. Battery Compartment: put in 2 x 1.5V batteries here.
H4. Channel switch from 1 to 16.
H5. Battery indicator: This red light indicator will be ashing when the
batteries are almost out of power.
H6. Power switch on / off: controls microphone power.
Note:
To prevent leakage remove the
batteries if you do not plan to use the
unit for a longer period of time.
Body-Pack Microphone
1. External antenna jack: 1/4” for antenna input jack.
2. Power indicator: The red light indicator will ash once when the body-pack is turned on.
The red light indicator will be solid red when the batteries are almost out of power.
3. 3.5mm ø microphone input jack or mini XLR jack.
4. Volume Control: turn clockwise to increase the volume, turn anti-clockwise to decrease volume.
5. Power switch: to power the body-pack on / off.
6. Channel selector: to select the transmission channel from 1 to 16.
7. Buckle is xed with a screw so that is can conveniently be clipped on the belt.
8. Buckle is xed on the unit. It can set revolved up to 90°by ngers.
9. Battery compartment for 2 x 1.5V batteries. Align the negative / positive polarities properly when

9
inserting the batteries. Remove the batteries when not been used for a long period of time to keep
the batteries life longer and to prevent damages by leakage.
10. Battery compartment cover: detach it before removing/changing the batteries.
Options: Headset or Lavaliere microphone.
Note on operation:
When using a lavaliere microphone, try to place the capsule close to the mouth, but then don’t turn up
the volume too much.
Instruction for changing the battery
1. Please switch off the power before changing the batteries.
2. Take out 4 screws q and remove the battery covers from main panel board. Then take out the
batteries. Install batteries 12V/5A into battery compartment.
3. Make sure the battery pack is properly inserted. Then close the cover by tightening up the screws.
Connect the red line into positive R1 red line terminal, black line into negative B2 black line terminal.
Connect negative B1 and positive R2 to each other.
4. Refer to diagram below for wiring the batteries and take care for correct implementation. Otherwise
the device will not work and probably be damaged.

10
Note On Unit Installation
1. Position the unit about 1 -1.5 meter above the oor, to get best performance. The bottom plate
features a ange for a tripod stand (ST-3B).
2. Adjust the volume to minimum (Main volume control / CD or TAPE volume) by any volume control.
3. When charging the batteries, the green light indicator is blinking. And when the rechargeable
batteries are fully charged, the green light indicator will be solid green.
4. The receiving frequency of this unit can be changed. Microphone and main unit must be set to the
same transmission channel to ensure correct operation.
5. If you want to connect an extension speaker to the 6.3 mm socket (EXT.SPK), it must have 4Ω
impedance and a power capability of at least 100W.
Troubleshooting And Maintenance Guide
1. Make sure to connect the red and black wires correctly to the positive and negative electrodes when
changing the rechargeable batteries.
2. To increase battery service, switch off while not using this unit.
3. When changing receiver module, please switch AC / DC main power to OFF position.
4. Remove the batteries if you do not plan to use the unit for a long period of time. To keep full batteries,
please charge them once between 1-2 month without xed schedule.
Note on Unit:
1. No altering or remodelling, this can cause malfunctioning and risk of live by electric shock.
2. No dropping or strong impacts, this may damage the unit.
3. Do not leave the unit exposed to direct sunlight for long periods of time.
4. Do not use trolley on uneven ground, as this might damage the unit.
Technical specifications
Model ........................................................... MBA75W MKII
Speaker ....................................................... 4ohm / 8” full range
Receiver module.......................................... UHF PLL Single, 16 user selectable channel
Frequency band........................................... UHF
Output power ............................................... 75 watt RMS
Recharging time .......................................... About 8 hours
Power supply ............................................... 100-240V
Rechargeable battery .................................. 12V/5Ah (2 pcs)
Frame material ............................................ Waterproof with plastic steel
Dimensions .................................................. 440 (H) x 330 (W) x 240 (D) mm
Weight ......................................................... 13 Kg
Standard package ....................................... Fixed handle, Trolley wheels
Oscillation mode .......................................... UHF PLL
Carrier Frequency Range ............................ UHF 863-865 MHz
Stability ........................................................ ±0.005%
Deviation...................................................... 40 kHz, with level Limiting circuit controlled
Dynamic Range ........................................... >110dB
S/N Ratio ..................................................... >105dB
T.H.D. ........................................................... <0.5%
Squelch Circuit ............................................ Pilot tone squelch /PLL Synthesized Receiver/Non-Diversity
Frequency Response .................................. 50Hz~18KHz ± 3dB
Receiver Mode ............................................ Quartz and Tone Squelch Single Receiver /
..................................................................... Non-Diversity PLL system
Wireless Microphone Capsule Type ............ Dynamic Capsule or Condenser Capsule
Transmitter power ........................................ Approx 10mW
Transmitter Battery ...................................... 1.5Vx2 (1.2Vx2)
As we continuously strive to improve our products, all specications and appearance are subject to
change without prior notice.

11
Disposal
Do not dispose of the device at the end of his operating life in your normal domestic waste.
ThisdeviceissubjecttotheEuropeanGuidelines2002/96/EC.
• Have the product disposed of by a professional disposal company of by your communal
disposal facility.
• Observe the currently applicable regulations. In case of doubt contact your disposal facility.
• Dispose of packaging materials in an environmentally responsible manner.

© 2010
Musikhaus Thomann
Treppendorf 30 • 96138 Burgebrach • Germany
www.thomann.de