2 x 50W + 100W 2.1 Channels Bluetooth Audio Amplifier Board – TSA7492
TSA7492 is a 2x50W + 100W 2.1 channel audio amplifier board with an AudioB pro-Bluetooth module. It features a perfect class-D architecture (based on TDA7492 and TDA7498), with two channels delivering 50W each and another channel delivering 100W. All channels can output nominal power simultaneously and continuously. Any DC 12V-26V power supply can power this board and drive 4ω or 8ω passive speakers. The TSA7492 can also be connected to our TSA1000, TSA1010, or TSA1020 external audio volume control boards, allowing users to adjust the audio volume by rotating an actual knob.
The TSA7492 is a 2.1-channel amplifier board, with the subwoofer channel providing a 100W mono output. You can pair it with a mobile phone, computer, or other compatible device. Power the amplifier board. Use your phone, PC, or any other device to search for a new Bluetooth device. The module will appear as “TSA7492.” You don’t need a PIN; pair it, and then you can play music.
- The TSA7492 can automatically detect the Aux/Line-in Audio input, with the Bluetooth audio source having a higher priority. The amplifier will output the Aux/Line-in audio when Bluetooth is paused or disconnected.
- An audio connector can connect with an external DSP to set the subwoofer audio tones.
- BVC Port: The BVC port can be connected to our Audio Volume Controller to control the Bluetooth audio volume.
Subwoofer tones set port:
Connect an external potentiometer to control the subwoofer volume separately.
The TSA1701 controls the subwoofer channel on our 2.1-channel amplifier board.
Buttons Control Port:
- The board has three buttons: volume control, play/pause, and other functions. The control port on this button lets you easily connect external buttons.
- Pins Definition: (Check the board backside silkscreen)
- P/P: Play/Pause button
- VOL+: Volume increase and forward button
- VOL-: Volume decrease and rewind button
Note: The reference voltage for the buttons is 1.8V.
The TSA7492 can automatically detect the Aux in/Line in Audio input. The Bluetooth Audio source has a higher priority. When Bluetooth audio is paused or disconnected, the Amplifier outputs the Aux in/Line in audio.
TSA7492 + TSA1000: The Aux-in and Bluetooth audio volume can be controlled through the BVC port.
Specifications:
Unless otherwise noted, specifications are typical at +25℃, powered by 25V DC. They are subject to change without notice.
| Parameter |
Condition |
Min |
Typ |
Max |
| Supply Voltage (VDC) |
– |
12 |
25 |
26 |
| Power output per channel |
RL= 8Ω, 10% THD+N |
|
|
40W |
| RL= 6Ω, 10% THD+N |
|
|
50W |
| RL= 8Ω, 1% THD+N |
|
|
32W |
| RL= 6Ω, 1% THD+N |
|
|
40W |
| 100W channel: RL= 6Ω, 10% THD+N |
|
|
100W |
| THD+N |
1W |
|
0.1% |
|
| Frequency Response (dB) |
±3dB |
20 |
– |
22K |
| Operating Temperature (℃) |
– |
0 |
20 |
50 |
| Minimum Load Impedance |
|
4Ω |
6Ω |
8Ω |
| Gain |
50W channel |
21.6dB |
27.6dB |
33.6dB |
| 100W channel |
25.6dB |
31.6dB |
37.6dB |
| Efficiency |
All channels output rating power. |
|
90% |
|
| Input Impedance (Kohm) |
– |
48 |
60 |
– |
Features:
- Size: 14.4cm x 7.8cm x 3.4cm
- Bluetooth 4.0
- Bluetooth audio volume control port(BVC)
- Aux in/Line in auto-detect
- 2.1 channels
- Working voltage: DC12V-26V
- Over/under voltage protection
- Overcurrent protection
- Over-temperature protection
Applications:
- Personal computer
- Background music system
- Musical instrument amplifiers
- Home DIY
- Car Audio
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