This is a 10-24V DC power supply with DC single-supply, using TI's TPA3116D2 high-performance digital power amplifier chip as the core, can support 50W (left channel) + 50W (right channel) two-channel output.
Support Bluetooth audio reception, U disk / TF card playback; FM radio; 5 function switch control; tone (EQ): 5 sound mode selection, with full-function remote control.
Extended interface: Support for Bluetooth calls,
USB decoding: Support WMA, MP3, WAV, FLAC lossless music file format.
5 Keys Function
[MODE] Mode conversion: U disk / TF card / Bluetooth / FM radio
[EQ] 5-level preset tuning (U disk / TF card playback is valid)
[VOL + / NEXT] Short press volume (+) / Long press to play the next song; Long press FM radio to select (+)
[PLAY / PAUSE] Play / Pause / Talk; Press and hold FM to select and save automatically
[VOL- / PREV] Short press volume (-) / Long press to play a song; Long press FM radio to select (-)
The main technical parameters:
Dimensions: 110 (W) x 67 (D) x 26 (H) mm, without the switch socket extension.
Operating voltage range: DC 10-24V (current 3-4A, if the power requirement is higher than 20-24V/5-6A)
If an AC (AC) transformer power supply is used, it must be rectified and filtered to a DC power supply.
Can only be used. Note that the DC (DC) no-load voltage should not be greater than 25.5V (this is very important)
Bluetooth receiving distance: >8 m (meter), version 5.0
It is an obstacle-free device that blocks the receiving distance, and the Bluetooth performance of the mobile phone itself also affects the receiving distance.
FM radio range: 87.5~108MHz (It is a simple FM radio function, it does not support the performance of professional radio)
U disk TF card disk: Support FAT32 file system, does not support NTFS
Speaker impedance: 4-8 ohms,
Power supply 12V/8Ω European speaker >10W x 2; 12V/4Ω >15W x 2;
21V/8Ω >30W x 2; 21V/4Ω=50W x 2;
24V/8Ω >35W x 2; 24V/4Ω >60W x 2;
1x TPA3116 50W*2 Bluetooth 4.2 Audio Receiver Stereo Digital power amplifier board
1x Remote Control
AUX audio input + Bluetooth 2-in-1 HIFI level with filter 50Wx2 Bluetooth digital power amplifier board
note! The heat sink with 3M glue needs to be pasted onto the chip, please refer to the description picture. The hotter the 3M glue, the better the thermal conductivity. The shell version requires you to assemble the shell and a screwdriver will be provided with the product.
This product is full of materials, high performance, high price, high quality power amplifier for HIFI music.
The TPA3116D2 is a Class D amplifier IC from TI that has very high index parameters. The modulation frequency can be up to 1.2MHZ, and the high power output distortion is less than 0.1%.
With AUX and Bluetooth two audio input methods, 2-in-1;
The potentiometer adjusts the volume with a switch for easy control of the volume, making it ideal for DIY speakers.
With a filter inductor, the sound is round and clear.
It adopts copper DC connector and fence type terminal. It can withstand large current, no heat, no damage to the wire, good wiring and short circuit.
Free DC head lead, compatible with the input power interface of this product, even if you don't have a DC head adapter or battery, it can be easily wired.
5.0 Bluetooth version, the transmission efficiency is higher, the transmission distance is farther.
Precautions for use: The power switch on the board is the standby switch. After the switch is turned off, the machine is in a low-power standby state. To completely turn off the power or unplug the DC plug on the machine for a long time.
Question and answer:
1. How to choose a power supply?
The power supply with the board is critical. The higher the voltage, the higher the current and the better the output power. If you only have 12V 1A, you can bring a 3-4 inch speaker. If you are 19V 5A or above, there is no problem with 8-10 inches, and the power supply must be highly valued. If the voltage is too low, the sound will be distorted after the sound is amplified. If the current is too small, the speaker will pull the voltage low, work abnormally or the sound quality will deteriorate.
It is recommended to use 18V19V24V power supply with current above 3A. If you only have 9V12V or 1A 2A power supply, it can also be used but the power is small. Please pay attention to the maximum volume when using it, which may affect the sound quality.
2. How to choose a speaker?
Commonly used speakers are generally 8 ohms, can not distinguish between positive and negative, the effect is the same, 4 ohm speakers can also be used.
If your speaker power is small, it may be used between 10W-30W. The power supply voltage is small to prevent the amplifier from burning out after burning. For example, select a power supply below 15V.
If you are a 50W-200w speaker, don't worry about the speaker burnout. You can choose 12-24V power supply. The higher the voltage you choose, the louder the output sound or power.
3. How to choose Bluetooth or AUX audio input mode?
Power on the power amplifier, connect the speaker, turn the audio knob blue light to turn on, turn on the phone settings - Bluetooth - search for "BT-WUZHI", and then click the connection, there will be a beep when the connection is successful, this When it is in Bluetooth mode, you can play music. The next time you power on, it will automatically connect with the phone.
If you want to use AUX audio input, then disconnect the Bluetooth connection, there will be a voice prompt, insert the audio cable to play music. In AUX (LINE IN) mode, Bluetooth is automatically switched to Bluetooth mode.
4. When the sound becomes louder, the phenomenon of turbid sound appears.
The sound is distorted. Please change the adapter power supply with a higher voltage rating.
5. After the sound becomes louder, the sound is stuck.
The input power is insufficient, and the power supply itself is intermittently powered off. Please replace the power supply with a larger power.
Or the output power is too large, the power amplifier board is seriously heated, and thermal protection occurs, reducing power usage or enhancing heat dissipation.
DSP tuning power amplifier HIFI audio power amplifier board 100 watts 3116 stereo tws pair box
Simple tuning with software manual
❶Rich sound effects settings 20-band EQ BASS subwoofer, vocal enhancement, dynamic range compression, anti-breaking sound, low-cut, frequency shifting, 3D sound effects, etc. . .
❷ Power supply 9～24v 3A or above, it can be used after power on
Board function: no impact on power on and off, low power standby sleep, mute suppression, Bluetooth 5.0 input, AUX input, USB sound card input
One is two-channel stereo, two can form tws wireless stereo
Support button function, built-in LED indicator can also connect external LED and buttons
❸ Online listening and tuning data storage chip (there are also tuning only)
❹ Size 8x5 cm 50X50W power adjustable gain size speakers are suitable
❺Be careful not to short-circuit the board. Do not touch the chip if you have static electricity on your hands.
1Pcs TPA3116 Bluetooth Amplifier