Magnasonic BA21 User manual

User’s Manual
Bluetooth® Music Receiver (BA21)
www.magnasonic.com

Content
Before use…………………………………………………...…1
1. About BA21………………………………………...…….1
2. System requirements………………………………...…………1
3. Overview of BA21…………….…………………...……...1
Getting started…………………….……………………………2
1. Charging the receiver………………..………………………....2
2. Turning on/off the receiver..........................................................2
3. Pairing with Bluetooth devices...................................................3
1)How to enter pairing mode …………..………………….…3
2)Pairing receiver with Bluetooth cell phone..............................3
3)Pairing receiver with Bluetooth transmitter.............................4
4. Playing music …………..…………………………………….4
5. LED indicator…………..……………………………………...5
Care and maintenance………….………………………………6
FAQs…………………………………..……………………….6
Specifications……………………...…………………………...7

Welcome to use this Bluetooth stereo receiver BA21. Please read this user’s
manual carefully before use.
Before use
1. About BA21
BA21is a stereo Bluetooth receiver. You can use a common audio device
with 3.5mm audio jack for playing any stereo Bluetooth-enabled device’s
music after plugging in BA21.
2. System requirements
Audio device with 3.5mm audio input jack, such as speakers, radios etc .
Bluetooth transmitter supporting A2DP profile, such as Bluetooth mobile
phones, Bluetooth transmitter etc.
3. Overview
1
3.5mm audio input jack
3
MFB button
2
LED indicator
4
Micro USB charging jack
1

Getting started
1. Charging the receiver
BA21 comes with a built-in rechargeable battery, prior to using it, it is
recommended to charge the battery fully for the first time. When the
receiver emits a string of warning tones every 1 minutes and the red LED
flashes. It means battery low. Please recharge the battery fully.
1)1)Plug the USB charging cable into the charging jack of PC or charger.
2) Plug the end of USB charging cable into charging port of transmitter.
RED light on
→
Charging
RED light off
→
Finished charging
3) It will take about 2 hours to finish charging.
DC 5V
Warning:
The battery is recyclable.
Batteries (battery pack or batteries installed) shall not be exposed to
excessive heat place, such as sunshine, fire or the like.
Remarks:
Please don’t push the 3.5 mm plug into the cable slot directly when you
reel the audio line.
Please don’t pull the3.5mm plug out from the cable slot directly when
you take out the audio line.
The audio line should be push in or pull out by sliding as above shown to
avoid the damage of the cable slot.
2. Turning on/off the receiver
Function
Operation
LED
indicator
Prompt tone
Turning on
Press and hold MFB
button for 3～4
seconds
White LED is
on for 1
second
Power on
Turning off
Press and hold MFB
button for 3～4
seconds
Red LED is
on for 1
second
Power off
2

3. Pairing with Bluetooth devices
1) How to enter pairing mode
Function
Operation
LED
indicator
Indication
tone
Entering
pairing
mode
Ensure the receiver is
turned off, otherwise turn
it off first and then press
and hold MFB button for
6
～
7 seconds .
White LED is
on for 1
second and
off for 1
second.
pairing
Remark: The pairing mode will last 2 minutes, the receiver will switch to
standby mode automatically if no devices can be connected over 2 minutes.
2) Pairing with Bluetooth cell phone
Prior to using the BA21 for the first time, you have to pair it with a
Bluetooth-enabled cell phone. The general pairing procedures are as
follows:
1) Place the BA21 and Bluetooth cell phone where they are easily viewable
by no more than 1 meter;
2) Make the receiver enter pairing mode (please refer to “How to enter
pairing mode);
3) Activate your cell phone’s Bluetooth function and set your cell phone to
search for Bluetooth devices within range, and select “BA21” from
the list of devices shown. After successful connecting, white LED of
receiver flashes twice every 4 seconds.
Remarks:
After successful pairing, the BA21 and the mobile phone will remember
each other, they will no need to re-pair next time. Every time the
receiver is turned on, it will connect to the last connected devices
automatically.
Every time the receiver is turned on, and if it doesn’t connect to any
devices, short press MFB button once, the receiver will connect to the
last connected device.
When the receiver and the mobile phone are out of effective range to
disconnected, they can connect to each other automatically once going
back to effective range.
3

3)Pairing with Bluetooth transmitter
You can connect the receiver with a Bluetooth transmitter to enjoy music
wirelessly. Hereby take BTT005 (Bluetooth transmitter, not included in
accessories) for example. The pairing procedures are as follows:
1) Keep the receiver and transmitter within
1 meter when pairing;
2) Make the receiver enter pairing mode
(Please refer to “How to enter pairing
mode);
3) Turn on the Bluetooth transmitter and
make it enter pairing mode. It will search
for Bluetooth devices automatically and
send a pairing request. After successful pairing and connecting, white
LED of the receiver flashes twice every 4 seconds.
Remarks:
The pairing password of the receiver is “0000”. So, the receiver can only
pair with a Bluetooth transmitter whose pairing password is “0000”.
If pairing still fails after several tries, please refer to the Bluetooth
transmitter’s user’s manual for further information.
4. Playing music
Connect BA21with Bluetooth device and plug the 3.5mm audio cable of
BA21into Bluetooth audio device to listen music wirelessly.
4
Function
Status of BA21
Operation
Pause
Playing music
Short press MFB button
once
Play
Pausing
Short press MFB button
once

Remarks:
The music will automatically pause when you dial a phone number or
there is an incoming call.
BA21doesn’t have a microphone, so you need to switch the call to the
mobile phone. The music will automatically play when the call is ended.
5. LED indicator
LED indicator
Status of BA21
White LED is on for 1 second
and off for 1 second
Pairing mode
White LED flashes once every
2 seconds
Not connected with device
White LED flashes twice
quickly every 4 seconds
Connected with device
Red LED flashes instead of
white LED
Low battery
5

Care and maintenance
Read the following recommendations carefully before using BA21.
Following these you will be able to enjoy this product for many years.
Keep it dry and don’t put it in the dump place to avoid the product’s
internal circuit being affected.
Keep the product away from direct sunlight or hot places. High
temperatures will shorten the life of electronic devices, destroy the
battery or distort certain plastic part.
Don’t expose the product to cold areas. It may damage the internal circuit
board.
Don’t try to disassemble the product as it may get damaged if you are not
professional.
Don’t let it fall down onto the floor or other hard surfaces. The internal
circuit might get damaged.
Don’t use intensive chemical products or detergent to clean the product.
Don’t scratch the surface with sharp things. It may get damaged by
sweat.
Please don’t attempt to take out the battery from the receiver, as this
might damage it.
In case the receiver doesn’t function properly, send it to the store you bought
it. The staff will help you to solve the problem.
FAQs
1. What to do when BA21 can’t be turned on?
a) Please charge the BA21.
b)The battery will enter the resting mode if the BA21 hasn’t been use for a
long time. Then the red LED will on after charging for 30 minutes.
2. What to do when BA21 can’t pair and connect to a Bluetooth device?
a) Make sure the Bluetooth device is placed within 5 meters;
b) Ensure BA21 has entered pairing mode.
3. What to do when BA21 can’t be turned off?
Please charge the BA21 for about 2 seconds.
6

Specifications
Bluetooth version
Bluetooth V3.0
Bluetooth profiles
A2DP and AVRCP
Bluetooth frequency range
2.402GHz-2.480GHz
Operating distance
About 10 meters
Charging input voltage
DC 5V
Working time
About 8 hours
Charging time
About 2 hours
Dimension
45*33*8mm
Weight
14g
7