Aura AMH-320BT User manual

OWNER’S MANUAL
General
Operation voltage: 12 V DC (9,6 – 16V)
Fuse: 10 А
Maximal output power 4 х 51 W
Speaker impedance: 4 - 8 Ohm
Frequency response: 20 Hz – 20 kHz
Display view angle: Vertical: 0° +30°, Horizontal: ±15°
AUX input (stereo): Front panel, 3,5 mm
Line out (RCA): 4-channel (2 pair)
Output level RCA: 1,5 V
Maximum current: 10 А
Sizes: (W x H х D): 180 х 95 х 52 mm
USB playback
Storage formats: USB, Micro SD
Music formats: FLAC, MP3, WAV, WMA, AAC
File system: FAT16, FAT32
USB/SD card: USB 2.0, USB 3.0, up to 64Gb
ID3 Tag English
FM radio
Radio storage: 18 FM
Frequency range FM: 87,5 – 108,0 MHz
Импеданс антенны: 75 Оhm
AUX in
Input level: 500 mV (Max 2 V)
Connectors: mini Jack 3,5 mm
Working temperature: 0°C +60°С
Humidity: 45% - 80%
All the pictures shown in the user manual is schematic and can be different.
Lifetime: 3 years.
Specification
AMH-330BT
AMH-320BT
AMH-350BT
USB/SD/MP3/FM RECEIVER
WARNING!
PLEASE READ CAREFULLY BEFORE USING
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©2020 AURA Electronics Inc. Все права защищены.
Note: Technical data is subject to change without prior notify

1
Waste electrical equipment should not be disposed of with your other household waste.
Please recycle it. Please contact your local authority for the required information.
The Directive WEEE 2012/19/EU on waste electrical and electronic equipment.
5. Do not disassemble the device yourself. This may void the warranty.
6. Do not use alcohol, solvents or gasoline for cleaning plastic parts and device. Use only dry soft cloth for
cleaning.
1. While installing the device, avoid places with high temperature, humidity, or dusty places.
2. Make sure that the device and especially its installation accessories are out of the reach of children.
3. Do not drop the device and make sure do not hit it, as this may damage it.
This user manual contains important safety advice and information on the correct use of the device. Please
follow all instructions in this manual carefully.
4. The manufacturer will not be held liable for any loss of data caused by device damage, repairs or any other
reason.
The manufacturer does not accept any responsibility for the use of this manual and decisions
based on its use.
Àâòîðñêèå ïðàâà
is a registered trademark.
All brand and product names used in this document are trademarks or registered trademarks of
their respective companies. Trademarks and product names are used for editorial purposes only
and for the benefit of such companies only.
In order to improve product quality, product specifications and features are subject to change
without notice.
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All rights reserved. This document, in whole or in part, may not be reproduced or copied without
the prior written permission of the manufacturer.
6
Precautions
Playback control from USB device and micro SD memory card.
Press 5 / -10 button on the front panel to go back 10 songs. Press the 6 / + 10 button to go forward 10
songs. The display will show in rotation the song number and related information.
Fast forward / reverse playback
Play/Pause
Press the ►►I button to skip to the next song and press the I◄◄ button to play the previous song. The
display will show the song number and related information.
To fast reverse or fast forward, press and hold the ►►I or I◄◄ button, respectively.
Song selection
Scanning Songs on Media
Press the 2/INT button on the front panel of the device to scan all tracks on the media. The first 10
seconds of each song on the media will play in sequence. Press the button again to resume normal
playback.
Repeat
Press the 3/RPT button on the front panel of the device in sequence to select the repeat play mode.
Modes are selected in the following order: Song repeat / Directory repeat / Repeat off (depending on the
format of the media used).
To temporarily stop playback, press the ►II button on the front panel of the device; press the button again
to resume playback.
Note: If a Micro SD card is inserted and a USB device is connected at the same time, the playback mode
will switch to the media that was inserted last. Playback will start automatically from the first song on the
media. For the most efficient system operation, wait until the device has finished reading information from
the media before taking any actions.
Insert a micro SD card into the slot on the device or connect USB device to the USB port. The playback
mode will automatically switch to the connected USB device or inserted Micro SD card.

Packaging content
2
The set of the device includes the following accessories intended for its installation/removal in a car.
1DIN
Installation
If the car has a standard 1DIN hole for installing the head unit, use it for installation as described below.
Use a screwdriver to pry out the metal tabs on the mounting cover to lock it in place.
Connect the ISO connector to the device. Check the functionality of the system before fixing it in the
mounting box.
Insert the device into the mounting cover and push it inward until it clicks into place.
Install the mounting sleeve into the 1DIN hole provided by the manufacturer. If the standard place is 2DIN,
use frame adapters
Check electrical connections, ISO connector or individual wires (depending on the equipment of a
particular car model). If necessary, use ISO adapters
fig. 2
fig.1
Removal keys 2
Installation frame 1
ISO cable 1
5
Rotate the volume knob on the front of the unit to adjust the selected parameter.
Adjusting sound parameters
Press SEL on the front panel to select sound adjustment options.
The parameters are selected in the following order: Volume - BASS (low frequencies) - TREBLE (high
frequencies) - BAL (left/right balance) - FAD (front/rear balance).
Note: When the power is turned off, all settings are saved in the device memory.
Disconnecting the vehicle battery or restarting the device with the Reset button will restore all parameters to
the factory settings.
AUX IN
The AUX-IN jack on the front of the unit is for connecting an external audio device. If the connection is made
correctly, the audio signal of the external source will be played through the speakers of the car audio
system.
Press the clk button (17) briefly to display the current time.
Press and hold this button until the clock time starts to blink, then you can short press buttons (10) and (2)
to adjust the time (hour/minute) accordingly.
The volume level and sound parameters are adjusted on the head unit.
If any of the preset equalizer (EQ) modes is selected, the BASS and TREBLE parameters are not adjustable.
If within a few seconds after the selection the parameter is not adjusted, the device will automatically exit the
configuration mode and return to the current operating mode.
Clock/Watch
1. Press the MODE button to select “BT” mode. “BT” symbol will blink on the screen.
2. Connect your phone to the radio using the “Bluetooth” menu of your mobile device.
3. If the connection is successful, the “BT” symbol on the screen of the radio will light up constantly.
4. In “BT” mode, you can listen to music from your phone via Bluetooth.
5. In “BT” mode, you can answer calls by pressing the button
Bluetooth
Select a range (if necessary).
- To recall stored radio stations from memory:
Briefly press a preset tuning button (1-6) to tune in a stored station.
Using the automatic or manual tuning mode, the device can store up to 18 radio stations in the
FM1/FM2/FM3 bands.
Press and hold the preset button (1-6) for at least two seconds.
Press the MODE button repeatedly to select the radio mode.
Press BND/AMS button to select FM1/FM2/FM3
Manual/automatic setting
The radio will find the next strongest radio station in the current frequency range.
To start automatic tuning of radio stations towards higher or lower frequency values, briefly press the ►►I
or I◄◄ button, respectively.
- Manual tuning of radio stations:
- To save a radio station:
Select a range (if necessary).
- Automatic tuning of radio stations:
Selecting FM band
Press the ►►I or I◄◄ button repeatedly to step by step change the tuning frequency value up or down to
tune to the desired radio station in the current range.
Press and hold for 2 seconds. ►►I or I◄◄ button.
In automatic or manual tuning mode, use the ►►I and I◄◄ buttons to tune to the desired radio station.
Digital tuner control
Basic operation

Models: AMH-320BT, AMH-330BT, AMH-350BT
Connecting
3
ISO connector
Power and speaker connections
RED
ACC +12V
YELLOW
DC +12V
BLACK
GROUND
Radio antenna input
RCA front – Left (white)
RCA rear – Right (red)
RCA rear – Left (white)
RCA front – Right (red)
B2 Right channel – (purple-black)
B8 Left channel – (green-black)
B7 Left channel + (green)
B3 Right channel + (grey)
B1 Right channel + (purple)
Rear speakers
B5 Left channel + (white)
Front speakers
B4 Right channel – (grey-black)
B6 Left channel – (white-black)
A7 ACC + 12V DC wire - Connect to a power source that can be
turned on and off from the car ignition switch.
A5 +12 V control wire for controlling an antenna with an electric drive
and remote turning on/off amplifiers or other active additional
devices. + 12V DC - connect to the remote turn-on input of the
amplifier or to the antenna motor control input (no more than 100 mA,
12 V).
A4 Battery + 12V DC
A6 Dimmer. Connection to vehicle lighting control.
A8 Negative (ground) - connect to a metal part of the car body or
connect to the negative terminal of the battery.
BLUE
remote wire
+12V
10 A
предохранитель
Unit control
4
Basic operations
FLAC (Free Lossless Audio Codec) does not remove any information from the audio stream, thus achieving
the best possible playback quality.
Your device is ready to play FLAC files.
AMH-330BT
17 316
18 8
2915
10 11 2019
456
17 14
AUX
RES
US B
MicroSD
CL K
BN D/A MS M UT E
5/-10 6/+10 EQ
LO UD
FM/USB/SD/MP3 PLAYER AMH-350BT
1. Button on. / off power.
2. Fast forward / select next song / answer the call.
3. Volume control / select button (SEL).
4. Preset button 1 / play / pause button.
5. Preset button 2 / Record scan button.
6. Preset button 3 / Repeat button.
7. LED display.
8. Mute button.
9. Button for selecting radio frequency range / autosearch of stations (Bnd / Ams).
10. The button for fast reverse playback / select the previous track / hang up.
11. Preset button 4 / Shuffle button.
12. Preset button 5 / Down button 10 songs.
13. Preset button 6 / Up button 10 songs.
14. Slot for micro SD memory card.
15. AUX-IN socket.
16. USB port.
17. Clock setting button.
18. Source selection.
19. Turn on LOUD (loudness).
20. EQ - turn on and select presets equalizer.
рис. 3
Unit control
AMH-320BT
17 316
18
8
2915
10 11 2019
456
17 14
US B
LO UD
FM/USB/SD/MP3 PLAYER AMH-320BT
MicroSD
12 13
12 13
AMH-350BT
1. Make sure your vehicle's onboard voltage is +12 volts with a negative value on the car body.
2. Remove the safety catch from the device before connecting the wires.
3. Connect the yellow wire to the +12 volts DC power circuit.
4. Connect the red wire to the ACC terminal of the ignition switch.
5. Connect the black wire to the metal part of the car body.
6. Connect the orange wire to the circuit where +12 volts appears when the dimensions are turned on.
7. Connect the rest of the wires as shown in Figure 3.
Note: each time the yellow wire is disconnected from the 12 volts power circuit, the device will revert to
factory settings.
Press the power button or volume control on the front panel to turn on the device.
When turned off, the volume level and the current radio setting will be saved in the device's memory.
Operating mode
Press the MODE button to select the operating mode of the device. The modes are selected in the following
sequence: Radio -> MicroSD -> USB -> AUX IN -> BT MODE.
ON/OFF Power
Press and hold the power button to turn off the device.
Volume off/Mute
To mute the sound, briefly press (MUTE) on the front of the unit.
Volume
Press SEL on the front panel to select sound adjustment options.
The parameters are selected in the following sequence: Volume -> BASS (bass) -> TREBLE (treble) -> BAL
(left and right balance) -> FAD (front and rear balance).
Turn the front panel encoder to change the volume.
Press the button again to restore the previous volume.
Turn the volume knob (3) to adjust the selected parameter.
USB or MicroSD mode can only be selected when a USB device is connected or a memory card is inserted.
Adjusting sound parameters