Professional Mobile Audio Amplifier
Operating Instructions
Please carefully read the operating instruction before using our product
To customers:
Respectable users,
Thank you for your support and trust on purchasing the products of our company. To
fully exert the function of the product, we suggest you to read the operating
instruction carefully before using it, for the convenience of grasping the connection
method and using points. Please take care of the operating instruction after reading it
for the purpose of further reference.
Product features
●Ultra-low distortion
amplifying circuit
● Digital karaoke, treble
and bass independent
adjustment
● Built-in MP3 encoding
supporting U disk
●Unique acoustic
appearance design
● Professional treble and
bass gain controlling
circuit
● Built-in battery for
outdoor activities
● Built-in professional
wireless microphone
system
●Professional
high-effective
loud-speaking unit
●Compatible to
DVD/VCD/PC and other
sound sources
● Suitable for adaptor
and charging
● Intelligent power
switch charging circuit
Attention
The product has been installed with battery, making it applicable to the outdoor
singing, advertisement, recreation and other activities. Please charge the battery
before using it outdoors, so as to guarantee that the machine can be used for a longer
time outdoors. The machine has been set with power switch circuit. When you
connect the adaptor to the power and insert the plug to the charging interface, the
machine will switch to the power supplied by the adaptor automatically and charge
the built-in battery. When the adaptor interrupts the power, the machine will
intelligently switch to the built-in battery for work continuously. When adaptor is used
to charge the battery, the integrated intelligent charging circuit within the machine
will give hints about charging and the charging indicator lamp will light. After
charging is finished, the intelligent charging circuit will give hint to that that the
charge has been fully charged and light the charging indicator lamp. At this moment
you can close the AC power of the adaptor. If you still use adaptor in the machine to
work, the charging circuit will automatically cut off the charging circuit and it is
unnecessary for you to worry about the charging breaking. You shall notice that the
battery has certain service life and it is beyond the warranty scope of the company.
Under general circumstances, the built-in battery needs charging 8-10 hours. With
more charging times, the battery volume will change and full charging time will
reduce accordingly. When the battery is out of charge after being used for a short time,
please change the built-in battery. The user shall also notice that if the electricity
quantity of the battery is reduced when using the machine outdoors, please close the
power switch on the rear plate and charge the built-in battery within 24hours. If the
electricity quantity of battery is totally consumed, the situation that the battery can not
be charged and the service life is expired will happen. When you don’t use the
machine for a long time and leave it alone, please charge the battery every six months,
so as to avoid the invalidity of battery.
Instruction of U disk MP3 encoding playing
When you need to use the built-in MP3 encoding function, please format your USD
disk (U disk for short below) as FA-T32 format in computer first and then copy the
file in MP3 format in U disk. When reading U disk, the encoding system will engage
in encoding playing according to the generation sequence of MP3 songs file.
Therefore, the song which is copied to U disk first will be played in priority or vice
versa. When the user needs to play according to the specific sequence, they can
arrange the copying sequence. If the files copied to U disk can not be played, please
inspect whether the file format is in MP3 format. If not, please switch to MP3 format
in computer and then copy to U disk in order to play normally. When copying MP3
file, you shall copy to the catalogue of U disk. It is suggested to delete all the
unnecessary files and file catalogues in order to reduce the occurrence of reading error
when the encoding is played. When the user buys U disk, please select the ones with
better quality and internal encoding supporting
64MB/128MB/256MB/512MB/1GB/2GB/4GB/8GB and other volumes. During the
playing process, please make it far away from the places with high temperature, high
magnetic field and high frequency interference. In case of crash, please close the
power and restart for recovery!
Panel/rear plate/MP3 function and operation
Volume: it is used to adjust the sound of volume.
TREBLE (treble): it is used to adjust the gain of music treble. Bass: it is used to
adjust the gain of music bass.
EQ (equilibrium): it is used to adjust music frequency curve and gain and attenuation
within certain frequency.
MIC. VOL (microphone volume): it is used to adjust the volume of microphone
MIC. TREBLE (microphone treble): it is used to adjust the gain of microphone treble.
MIC. BASS (microphone bass): it is used to adjust the gain of microphone bass.
ECHO (microphone echo): it is used to adjust the echo depth of microphone.
DELAY (microphone delay): it is used to adjust the effect of microphone echo delay.
MIC1 MIC2 (microphone 1 and microphone 2): they are used to connect the plug
interface of the wire microphone.
GT 1, GT2 (guitar 1 and guitar 2): they are used to connect the interface of guitar
audio wire.
GUITAR. VOLUME (guitar volume): it is used to adjust the volume after the guitar
input function is amplified.
DC FUSE (DC fuse): it is used for the power to supply the fuse of the whole machine
with the protective tube of F10A/250V.
POWER (power switch): the switch break-make power is applicable to the power
control of sound amplifier of the whole machine instead of that of charging power.
When the adapter is connected, the battery charging is not controlled by the switch.
DC15V IN (15V DC power input): the interface of external power adaptor; please use
the original adapter.
CHARGING (indicator lamp of battery power): after the power adaptor is connected,
the indicator lamp will be on and battery starts to be charged
FULL (indicator lamp of full charge): when adapter is used to charge the battery, it
means full charge when the indicator lamp is on.
WIRELESS MIC ANT (built-in microphone antenna): when you use wireless
microphone, please make the antenna vertically upward, so as to reach a better
receiving effect.
The Microphone used IR function.
12V BATTERY IN (external 12V battery interface): please carefully check the anode
and cathode when connecting and the applied connection line can not be smaller than
0.75 square meters. Attention shall also be paid to the firmness when connecting it.
LINE IN (external audio interface): it is used to connect the compatible audio
equipment such as DVC and computer.
Display screen of MP3 encoding player: it is used to display the playing track, playing
time or the receiving rate under receiving status.
USD interface (U disk interface): when MP3 function of U disk is needed, insert the
U disk with MP3 songs to the interface.
SD/MMC CARD (interface of SD card and MMC card): insert SD card or MCC card
with copied MP3 songs to the interface.
Key: pressing the key to switch pause status under playing status or vice versa.
Stop key: pressing the key to stop playing under playing status; you are suggested
to stop the key and change U disk when you want to change U disk.
MP3/LINE-MODE (audio input switch): it is used to switch to use the external audio
or built-in MP3 encoding sound as the signal source of audio amplifier.
VOL-key: select the previous song for playing: the volume will be reduced by
pressing the key for longer than 3seconds.
VOL+ key: select the next song for playing: the volume will be increased by
pressing the key for longer than 3 seconds.
REPEAT (repetitive playing): press the key for repeating of single song or total songs.
Operation of FM receiving function
SCAN key-pressing: press the key and the radio will scan the local radio station and
save it automatically.
CH+ key-pressing: press the key and the radio will read the saved radio station and
select the next one in ascending order;
CH- key-pressing: press the key and the radio will read the saved radio station and
select the previous one in descending order;
Note: MODE key is used to switch radio status in order to use radio key-pressing
function; if the receiving frequency needs inputting manually, press the numbers on
remote control directly to input the frequency of radio station.
FCC Statement
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates
uses and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-- Consult the dealer or an experienced radio/TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:(1) This device may not cause harmful interference, and (2) this device must accept
any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
Basic operation and attention of wireless microphone
● Open the battery box correctly and install the battery. Attention shall be paid to the
cathode and anode of the battery.
● Turn the power switch on microphone to “ON”. If the power indicator lamp does
not flash or always lights, inspect whether the battery voltage is insufficient or the
polarity of battery is installed oppositely.
● Before using wireless microphone, please extend the rod antenna and make it
vertically upward, so as to reach a better receiving effect.
● Adjust the microphone volume knob on the audio amplifier and adjust its position
according to the sound volume when singing, so as to reach the ideal effect.
● If you have to use wireless microphone temporarily during the singing process, you
can put the microphone switch in mute status; once using is stopped, you can turn the
microphone switch in off status. The microphone will pick up sound to amplify it and
input to the horn of the audio amplifier no matter it is in mute or off status.
● The receiving antenna shall not get access to the metal surface, wall or other
obstacles; if it is too closed to them, the performance will be reduced dramatically,
influencing the receiving effect.
● The effective using distance of wireless microphone is within 30m, please never use
it beyond the effective range in order not to affect the singing effect; when the
electricity quantity of battery is reduced or the wireless interference signal of the
using environment is too strong, the using distance shall be shortened accordingly.
● To reach the best singing effect, the distance between mouth and microphone shall
be 5-15CM and the best angle is 45degrees.
● After the microphone is used for a very long time and lacks of electricity, the
indicator lamp for electricity insufficiency will light. Please timely change the battery
in order not to affect the singing effect.
● Please never use the microphone in the same frequency point for singing within
short distance since it may cause silence or interference noise.
● If you have purchased more than two sets of active audio amplifiers matched with
wireless microphone from the company and intend to use them together, please select
the varieties in different standard frequencies. If the frequency is identical, two sets
machines can not be used until they are separated from each other for 100m, so as to
avoid mutual interference and other unnecessary troubles! Never get the machine to
VCD/CD/DVD and other equipments with strong interference frequency when they
are used, so as to avoid mutual interference between the same frequency and directly
affecting the normal work of wireless receiving of microphone!
Maintenance guidance of common faults
Common simple faults and guidance for operation and repair
Fault phenomenon
Simple fault analysis
Troubleshooting
Failing to electrify
The power switch is not
opened
The electricity quantity of
built-in battery is totally
Open power switch
Use power adaptor to
charge the battery
consumed
No sound
Failing to input sound
source
Failing to establish signal
line
Main volume is switched
to minimum
U disk playing has no
sound
Faults with external signal
source
Poor contact or damage of
external signal line
Change signal source
Reconnect signal line
Properly adjust the volume
knob
Inspect U disk or audio
switch
Change signal source
Readjust or change signal
line
External microphone has
no sound
External microphone is not
fully inserted in the jack
The external microphone
switch is not opened
The volume knob of
microphone is off
Totally insert the
microphone to the jack
Open the switch of
wireless microphone
Properly adjust the volume
knob of microphone
Problems with wireless
microphone
The switch of wireless
microphone is not opened
The wireless microphone
is not inserted in the
battery
The sound of wireless
microphone is in distortion
Open the switch of
wireless microphone
Insert electrical apparatus
to the battery box of
wireless microphone
Change the battery of
wireless microphone
If there is still fault after the inspection above, please contact the nearest local
maintenance department! The product technology of our company is upgraded
continuously and we will not inform of the change of product specification and
function additionally!
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