smart home SELECT VAI-2007E201 User manual

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Smarthome®SELECT™
Bluetooth®Wireless Stereo Audio Receiver and Amplifier
INTRODUCTION
The Smarthome SELECT Bluetooth Wireless Stereo Audio Receiver and Amplifier is a multi-functional compact device. It
allows you to stream audio via a wireless Bluetooth connection and play audio via the 35-Watt digital amplifier (speakers
sold separately). It gives you the flexibility to put an audio system anywhere you have access to a power outlet and want
to put speakers – perfect for the home, garage, office, and classroom or conference room.
This device also features an RCAL/R Channel Audio input, a 3.5mm Stereo Audio Input, and an optional Microphone input.
For added convenience a Remote Control and an IR receiver cable are included so you can switch inputs (between
Bluetooth, wired audio or microphone), adjust the volume, bass and treble, all while keeping the unit conveniently tucked
away in an entertainment cabinet, closet or other space, with only the IR receiver being exposed.
PARTS LIST
Wireless Receiver and Amplifier
IR Receiver

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24V 2.5A Power Supply
Remote Control
SPECIFICATIONS AND FEATURES:
INPUTS:
1x - Stereo audio input via 2x - RCAs in parallel connection with wireless Bluetooth input
1x - Stereo audio input via 3.5mm jack
1x - Microphone input via 6.3mm jack
OUTPUTS:
1x - Loop via 3.5mm jack with unit link up to 3units or external amplifier
1x - 4-Pin screw connectors for speakers out
3 SELECTABLE SPEAKERS OUTPUT:
•STEREO
•MONO
•BRIDGE

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Specification
Audio General
Frequency Response 40Hz ~ 20kHz Input Sensitivity 1.7V
Volume Control Range 75dB SNR >80dB
Bass Control Range 12dB Treble Control Range 12dB
Power Output
2x -15W(RMS) @ 4Ω(Stereo)
2x - 7W(RMS) @ 8Ω(Stereo)
1x - 35W(RMS) @ 8Ω (Bridge)
Stereo Channel
Separation <50dB
THD <1% @ 1kHz
（ 1W ）
<10% @ 1kHz (max power)
Audio Input Audio Output
Input MIC
Stereo Audio Output 1 Amplifier (Speaker)
1 Stereo audio (Loop)
Input Connector
RCA
3.5mm jack
6.5mm jack
Output Connector 4-P screw connector
3.5mm jack
Input Impedance >20kΩ(Stereo Audio )
600Ω (MIC)
Speaker Output
Impedance
4Ω(Stereo & Mono)
8Ω(Bridge)
Loop Output
Impedance >20kΩ
Bluetooth Receiver Module
Version 2.1 EDR (3M/bps) Profile Support A2DP profile
Reception Range Up to 30 feet (depending on
environmental conditions)
Control Parts
RS-232
Pin Configurations 2=TX, 3=RX, 5=GND
General
Power Supply DC 24V, 2.5A Product Weight 397g ~ VAB-1201
Case Dimension 125mm(L) x 90mm(W) x 45mm(H) ~ (Bluetooth module included)

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CONTROL INTERFACES:
Source selection with 3 different inputs are available as stated below, control of volume up and down, along with treble and
bass, can be reached over any one of the interfaces, including the unit keypads, IR Remote Control (through the Remote
Control and IR Receiver) or RS-232.
Source selection over remote control:
•Input 1: Stereo RCA (default source)
•Input 2: Stereo 3.5mm
•MIC
Sound levels and tone settings using the Remote Control:
•The overall volume level (0 lowest ~ 20 highest), factory preset value at 5
oBass (L.1 lowest ~ L.9 highest), factory preset value at 5
oTreble (H.1 lowest ~ H.9 highest), factory preset value at 5
oMute: No signal output
Note: The unit has a memory function for all of the above controls including Source Selection, level of Volume, Bass,
Treble, and Mute while power is shut down. But all these can be reset to default settings again, simply press and hold the
“Mute” button for 3 seconds until red LED illuminates steadily after flashing 3 times. This reset function over the Mute key
can be done using the keypad on the main unit or via the Remote Control.
BLUETOOTH RECEIVER MODULE:
•This Wireless Stereo Audio Receiver and Amplifier supports play back of audio signals from Bluetooth-enabled
devices such as a smartphone, tablet, PC or other device supporting Bluetooth Version 2.1 and A2DP profile
•A blue LED indicator light shows modes of operation over the Bluetooth receiver:
oBlinking to indicate pairing mode
oSteady light to indicate the connection is complete between Bluetooth-enabled device and the receiver
•Unique 4-digit alpha-numeric ID is used for identifying each individual receiver when multiple units are used in one
house
•Reception Range: up to 30 feet depending on housing structure and environmental conditions
•For indoor use only. Keep away from extreme temperatures, humidity, and moisture.

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INPUTS, OUTPUTS, CONTROLS, AND INDICATORS:

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INSTALLATION AND WIRING DIAGRAMS:
INSTALLATIONS:
Step 1: Audio Connection
Connect line level audio devices such as MP3, CD, DVD, notebook…etc., to the unit using the RCA L/R, stereo 3.5mm or
MIC input. This device is also equipped with a Bluetooth receiver that will allow you to connect a wireless audio source
from Bluetooth-enabled devices.
Notes:
The wireless audio input is in parallel with dual-RCA input; if both signals are present at the same time then two sources
will be mixed together.
Step 2: Speaker Connection
4 connectors for 14~22 AWG cable (R+, R-, L+, L-).
Step 3: Power Connection
Connect the provided power supply to the 24V input on the unit, and then plug in the power supply to an available outlet.
Note: Minimum power requirement of 24V at current rating 2.5A – use of an alternative power supply that does not meet
the minimum recommendations may cause power supply failure or shutdown due to overheating or power overload.
Step 4: IR receiver connection
Plug in the IR Receiver to the IR input jack – this will give you remote control of source selection, volume control up and
down, treble and bass up and down, and more, all using the Remote Control.
OPERATIONS:
Press “Mute” button (LED will disappear) to put the receiver into “WORKING MODE”
It is suggested to play your audio source with the volume set a half and then increase the volume to a desirable level.
Procedures of pairing your Bluetooth device:
•Switch source to input 1
•Place your Bluetooth device within 1m of this unit
•Perform pairing procedure from your Bluetooth device to detect the unit - the ID name of “Audio adapter XXXX” will
appear on the list of your Bluetooth device. If not, switch to a different source and then go back to the Bluetooth
source input, this will reset the Bluetooth function, and then repeat the pairing operation.
•Select “Audio adapter XXXX” on the display of the Bluetoothdevice
•Input passkey/pin code “0000” (required for first time connection from a Bluetooth device)
•Start the Bluetooth connection from the Bluetooth device
Note: The wireless receiver is capable of storing up to 8 pairings. Additionally, it is able to automatically reconnect to the
last paired device

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Notes on Bluetooth operations
1) Working mode/sleep mode:
There are 3 minutes of working time for the Bluetooth pairing connection from the time when the wireless receiver is
powered on and enters into a working mode.
If there is no pairing connection made within 3 minutes, the wireless receiver will enter into a sleep mode and the pair
option will no longer be available until the Bluetooth receiver has been reset via a power off and power on (unplug and
then plug in again).
The Bluetooth receiver will wake up manually by any one of the previously 8 paired devices for a connection even if the
wireless receiver is in sleep mode.
2) Automatic connection:
The wireless receiver will be in search mode within a few seconds of being powered on to sense and connect
automatically to the previously last paired device.
3) Memory function:
The Bluetooth receiver is capable of storing up to 8 pairings; any new pairings over 8 will delete the previous pairing in
order from first paired to last paired.
4) The Bluetooth connection between the wireless receiver and the Bluetooth device might be disconnected when it is
out of the 10 meter (~30 feet) reception range. The wireless receiver is able to automatically connect to the Bluetooth
device once they are within the reception range (within in 30seconds).

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IR control through RS232 interface with reference picture pasted below from the computer:
RS232 Pins Configuration over the connector:
2
＝
TX , 3
＝
RX , 5
＝
GND
Assembling & set up control software:
Step 1: Wire the connector cable according to above configuration. Make sure the wiring of TX/RX is not reserved which
TX should be connected to PIN-2 and RX to PIN-3 for avoiding the control not working.
Step 2: Plug in connector to PC end.
Step 3: Set baud rate to 9600 in your PC and install control software from the provided CD until your PC appears on the
display of the Control Panel as shown above right.
Step 4: Press “Connect” to give the unit access with RS232 control and then press the “Refresh” button to update the
control of volume, bass, treble and source.
Notes:
a) With RS232 control, there will be a maximum of 9 units to be linked through one PC by manual setting from COM1
to COM9 as the assigned ports.
b) With RS232 connection made via cable, please ensure that 2
＝
TX , 3
＝
RX.

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RS232 communication ASCII CODE protocol:
Note: The coding system: 8n1: 1 start bit + 8 data bits + 1 stop bit per byte = 10 bits per byte.
The serial port speed/baud rate: 9600
Group Command Function Description Feedback Code
Source Switch Setting
1A1 Switching the source to input 1 A:1->1←
2A1 Switching the source to input 2 A:1->2←
3A1 Switching the source to input 3 A:1->3←
Mute Setting 1A0 Mute All Mute All←
0A0 unMute All UnMute All←
Step Setting
600% Volume Up Volume:15←
601% Volume Down Volume:15←
602% Base Up Base:02←
603% Base Down Base:02←
604% Treble Up Treble:03←
605% Treble Down Treble:03←
Initialization 609% Initialization, back to the default setting
A:1->1←
Volume:00←
Base:05←
Treble:05←
Request
690% Checking the working status
A:1->1←
Volume:15←
Base:02←
Treble:03←
691% Checking the Source status A:1->1←
692% Checking the Volume status Volume:15←
693% Checking the Base status Base:02←
694% Checking the Treble status Treble:03←
7[x][x]% Preset Volume, [x][x] is arranging from [0][0] to [1][9],
20 degree in total Volume:15←
8[x][x]% Preset Base, [x][x] is arranging from [0][1] to [0][9], 9
degree in total Base:02←
9[x][x]% Preset Treble, [x][x] is arranging from [0][1] to [0][9],
9 degree in total Treble:03←
EX:
MUTE ALL: 1A0
Volume Up: 600%

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WIRING DIAGRAMS:
A) TYPICAL BLUETOOTH APPLICATION

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B) 3 DIFFERENT APPLICATIONS OF SPEAKER
OUT
“BRIDGE” mode at 8ohms speaker
Note:
While the system is under a bridge connection, please ensure the speaker is not below an 8ohms total load.

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3) AUDIO ONLY LOOP UPTO 3UNITS OF VAB-1201:
Note:
This loop connection can also be done as a fixed line-level audio output for additional power when used with an external
amplifier.