Akai FMT-21 User manual

1. Product Overview:
Thanks for using Car MP3 Player!
Car MP3 Player read the MP3 audio file in the Built-in Nand
flash USB flash disk and transfers the audio signal to the car FM
tuner through the built-in FM transmitter. You enjoy the MP3
music through the Car FM tuner. It also has LINE-IN feature
which transfers the audio source from the external audio device
such as CD, MP3 player to the Car FM tuner. Just insert the
USB flash disk which stores MP3 files to the USB port or
connect to an external audio device, and adjust the Car FM tuner
to the channel which is indicated on the Car MP3 player, now
you can enjoy your favorite music.
2. Features:
-MP3 player
Read MP3. WMA file from the Built-in Nand flash USB flash
disk directly and broadcast through the Car FM tuner.
Provide four keys to control the playback: PLAY/PAUSE/
PREV/V-, NEXT/V+ and CH.
-FM transmitter
Transmitter music from external audio player (CD, MP3 player
etc.) to the FM radio.

-Frequency Display and work state (play. Pause) indicator.
-Rotary joint design convenient for you to adjust the device` s
position.
-206 preset channels from 87.5-108MHz.
-Car cigarette lighter power supply.
-Song memory function.
3. Package Content:
-Main Unit
-Line-in Cable
-Safety Tube
-Safety Tube installation Guide
4. Device Diagram:
插入产品标示图
USB Previous Channel LCD display Next
Play/pause Line-in jack Negative Positive
5. Operations:
5.1 Listening to music
Read MP3. WMA file from the Built-in Nand flash directly use
the USB flash disk and as audio source.

-Insert the cigar plug of Car MP3 player into the car cigar
socket power.
-Plug the USB flash disk that stores MP3 files into the USB
port.
-Press the “CH” key then press / key to select the
Preset channel without signal interference, You` II see the
selected frequency indicated on the display.
-Tune the Car FM radio to the same channel as indicated on
the display. Now you can enjoy MP3 music with excellent
quality through the FM stereo audio set.
-Use the SD cards same as use USB.
LINE-IN Function
The device supports LINE-IN feature that enables you to enjoy
the music from an external audio device such as CD, MP3
player. The external audio source comes into the Car MP3
player through the line-in jack and is transmitted to the Car FM
tuner by the built-in FM transmitter. You enjoy the music
through the FM stereo audio system.
To enjoy the music on the external audio device through the FM
radio:
- Connect one end of the LINE-IN cable to the line-in jack of
the Car MP3 player. And connect the other end to the earphone

jack of the external audio device.
- Turn on the external audio player and play the music.
- Press the “CH” key to select the preset channel without signal
interference. You see the selected frequency indicated on the
display.
- Tune the Car FM radio to the same channel as indicated on the
display. Now you can enjoy music with excellent quality
through the FM stereo audio set.
5.2 Playback Control
- Play/Pause
Press the key to play the MP3 file on the USB flash disk
The frequency is indicated on the display. To pause during
playback, press the key, the red LED stops flashing and is
steadily on. To resume, press it again.
- Previous/Next
Press the key to play the previous track or press the
key to play the next track.
- Switch Channel
Press the “CH” key to switch 206 preset channels. The 206
preset channels includes from 87.5-108MHz. When you switch
to a certain channel, the frequency is indicated on the display.
- Adjust Volume

Press and hold the key to decrease volume, or press and
hold the key to increase volume.
6. Technical Specifications：
Item Description
USB interface USB1.1 (USB2.0 Compatible)
FM frequency range 87.5-108MHz
SNR 85dB
Output Frequency 20HZ-20KHZ
Supported File MP3
Audio Source USB flash disk or audio player
Bit Rate 32Kbps-320Kbps
Power Supply 12V-24V（DC）
7. Remote Control
- CH-: Freq Minus
- CH+: Freq Plus
-Previous music
-Next music
-Play/Pause
- VOL-: volume decrease
- VOL+: volume increase
- EQ mode Selection

- 0~9 number key: Directly selection music or Freq
- PICK SONG: Press number key then press this key
selection song
- CH SET: Press number key then press this key
selection transmitter Freq from 87.5Mhz to 108Mhz
8. Notice:
-The device supports most USB flash disk except a few.
-Frequency of the Car FM tuner should be the same as that of
the Car MP3 player.
-You` d better not pull out the USB flash disk during play
back. Pause the playback first.
-The progress may be slow when the USB flash disk stores too
many audio files.
-In order to extend the device life, please do not keep it in use
for too long.