1 x 200W Bluetooth+DSP Mono Audio Amplifier Board - TSA7550B(Apt-X)
20 or more $60.50
TSA7550B 200W Bluetooth+DSP mono amplifier board with an AudioB plus Bluetooth module that supports Apt-X. TSA7550B is a very flexible DSP/Amplifier combination board. It has perfect class-D architecture(Based on TDA7498E) and the mono channel has 200W power output. This board can be powered by any DC14V-39V power supply. It can be used to drive any 3Ω,4Ω or 8Ω passive speakers. TSA7550B has a smart cooling system, the fan not working in normal case to reduce the noise. Only start when the board overheat.
It's a one channel amplifier board. The only channel are 200W mono output(right and left channel audio mixed). You can pair it with a mobile phone or a computer (etc). Power the amplifier board. Use your phone or PC (etc) to search for a new Bluetooth device. The module will appear as "TSA7550B". You don't need a PIN, pair it and then you can play music.
The highlight point is ADAU1701 DSP chip on board. User can set audio tones/frequency of the output. The board has default DSP program loaded. User can set the amplifer to has full frequency or low pass output via switch port. TSA7550B are Apt-X and TWS supported. Therefore, Users can stream audio to 2 paired amplifier boards at the same time wirelessly.
External Buttons port:
There have 3 buttons on the board which can control the audio volume and play/pause ect... You can connect external buttons easily by using this buttons control port.
Pins define:(Check the board backside silkscreen):
- P/P: Play pause button
- VOL+: volume increase and forward button
- VOL-: volume decrease and rewind button
- 1.8V
Switch port:
Open: Low frequency output
Close: Full frequency output
User can also define this port function by change the DSP program.
POT port:
User can connect an external 10K potentiometer to control the audio volume.
DSP programming port:
User can load a new DSP program by using the USBi JTAG Sigma DSP programmer
2 boards work in TWS mode. You can also build a wireless subwoofer system.
- S1 - Long press 3s into pairing mode. Long press 6s clear the pairing info.
- S1+S2 - Long press 1s into TWS slave mode.
- S1+S3 - Long press 1s into TWS master mode.
- S2+S3 - Long press 1s disconnect TWS connection.
Specification:
Specifications typical @ +25℃, Powered by 36V DC, unless otherwise noted. Specifications subject to change without notice.
| Parameter | Condition | Min | Typ | Max |
|
Supply Voltage (VDC) |
- | 14 | 36 | 39 |
| Power output |
Parallel BTL (mono) output power, RL = 3 ohm,THD = 10% |
220W | ||
|
Parallel BTL (mono) output power, RL = 3 ohm, THD = 1% |
170W | |||
| THD | Po = 1 W | 0.05% | ||
| Bandwidth @ ±3dB | @4Ω | 20Hz | - | 20KHz |
| Input Impedance | - | - | 69KΩ | - |
|
Undervoltage protection threshold |
8V | |||
|
Minimum Load Impedance |
3Ω |
|
||
| Gain | 23.8dB | 29.8dB/33.3dB | 35.8dB | |
| Efficiency | - | 85% | - |
Features:
- Size: 14.3cm x 9.2cm x 2.8cm
- aptX, aptX Low Latency, SBC and AAC
- Bluetooth 5.0
- Mono output
- Working voltage: DC14V-39V
- Smart cooling system
- Over/under voltage protection
- Over current protection
- Over temperature protection
Applications:
- Personal computer
- Background music system
- Musical instrument amplifiers
- Home DIY
- Car audio
Documents:
- How to change the BT name
- How to enable BT password
- How to change Bluetooth audio gains
- How to pair and set TWS mode
- ADI SigmaStudio software
- How to write DSP program to DSP board
- Default DSP program
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