2*50W+5.0W AUX Bluetooth 5.0 TPA3116D Digital Amplifiers Board 2.1 Channel Audio

Description

Q&A
1. How to choose a power supply?
The power supply with the board is very important, and the ripple of the selected power supply must be
A power supply with a small, large ripple will cause the noise at the bottom of the power amplifier board to increase.
There is electric current. The higher the voltage, the greater the current and the greater the output power
That’s enough, if you only have 12V1A, you can bring 3-4 inch sound box. If you are above 19V5A, there is no problem with 8-10 inches.
Power must be highly valued. If the voltage is too low, the sound is amplified
It is easy to cause sound distortion, if the current is too small,
The speaker will pull down the voltage, work abnormally or the sound quality will deteriorate.
It is recommended to use a power supply of 18V19V24V with a current above 5A.
If you only have 9V12V or 1A2A power supply, you can also use
However, the power is small, and the volume is close to the maximum when using it. Distortion affects sound quality.
2. How to choose a speaker?
About the speaker type: commonly used speakers are generally 4-8 ohms
Can be used. The left and right channel speakers need to be connected to full frequency speakers
Horn or medium and high frequency speakers, the power is between 20W-100W.
The subwoofer speaker cannot be connected to the ordinary speaker, it needs to be connected with a subwoofer
The speaker of the speaker, the power is between 20-100. Subwoofer
The diving frequency of horn must be at least 50Hz.
If your speaker has low power, such as between 20W-50W
It can also be used, and the power supply voltage needs to be lower to prevent
Burn the speaker after loud, for example, choose a power supply below 15V. Such as
If you are a 50W-100w speaker, don’t worry about the speaker burning
For bad problems, you can choose a 12-24V power supply.
The higher the voltage, the greater the sound or power that can be output.
The speaker power is not easy to exceed 100W, otherwise it will affect the sound quality.
3. Introduction to audio input mode
This audio power amplifier module has two audio input methods: one is Bluetooth input, one is AUX input, Bluetooth mode has priority.
Bluetooth can be connected in any mode. As long as Bluetooth is connected
The successful connection is the Bluetooth mode, and the Bluetooth mode supports self
Move back to connect. When Bluetooth is not connected, AUX plug-in is in AUX mode.
It should be noted that this module needs to be confirmed when using AUX mode
The Bluetooth connection of has been disconnected.
4. How to adjust the main volume?
The MAIN—VOLUME knob adjusts the main volume. Right-handed tonic
The volume increases, and the left-handed main volume decreases. Master volume to left and right channels
And the volume of the subwoofer.
5. How to adjust the left and right channel treble and bass?
R&LCHANNEL—BASS knob controls the bass, turn right
Bass enhancement, left-handed bass attenuation. When the knob is at the right end
In position, the bass is neither enhanced nor attenuated.
R&LCHANNEL—TREBLE knob controls the treble, right
Rotating treble is enhanced, and left-handed treble is attenuated. When the knob is in the middle
In position, the high pitch is neither enhanced nor attenuated.
Note when adjusting the treble and bass: when the treble or bass is adjusted to
Close to the maximum, if the sound is distorted, it means treble or bass adjustment
The gain is too large, you need to turn the treble or bass knob to the left to increase
Lower the gain or turn the MAIN-VOLUME knob on the right to the left to let
The total volume is reduced.
6. How to adjust the subwoofer?
SUBWOOFER—VOLUME knob controls the volume of the subwoofer
of. Right-hand turn the volume up, and left-hand turn the volume down.
SUBWOOFER—FREQ knob is to control the cutoff frequency of the subwoofer
of.
The right-hand frequency increases, and the left-hand frequency decreases. Frequency adjustment
The range is 20Hz-200Hz.
7. The voice is small and okay, when the voice becomes louder, the voice appears muddy
phenomenon?
The sound is distorted, please turn down the total volume or change the voltage
A higher-level adapter power supply.
8. The sound is small and it’s okay. When the voice becomes louder, the sound becomes stuck
phenomenon?
Insufficient input power, power supply itself intermittently cuts off
Protection, please replace the power supply with a higher power; or if the power is too large, the power
The release board heats up seriously, and there is a thermal protection situation, which reduces the power
Use or enhance heat dissipation.
9. What factors are related to the sound quality?
The sound quality is not only related to the power amplifier module, but also to the electricity
Source, sound source and the entire sound system are related. Basic tone
Each link of the sound system will affect the sound quality, the main
Section has audio transmission line, audio power supply, tone circuit, power amplifier
Circuits, speakers and surrounding environment. Only sound source, power supply,power
The sound quality is the best when the amplifier module matches the speaker of.
Package Included:
1x TPA3116D Bluetooth Digital Amplifiers Board 2.1 Channel Audio MD 2*50W+5.0W AUX
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On Aug-26-20 at 06:23:11 PDT, seller added the following information: