40392983674957
Audio Speakers 5.0 High Power Digital Amplifier Stereo Board AMP Home Audio - Bluetooth
Audio Speakers 5.0 High Power Digital Amplifier Stereo Board AMP Home Audio - Bluetooth
Audio Speakers 5.0 High Power Digital Amplifier Stereo Board AMP Home Audio - Bluetooth
Audio Speakers 5.0 High Power Digital Amplifier Stereo Board AMP Home Audio - Bluetooth
Audio Speakers 5.0 High Power Digital Amplifier Stereo Board AMP Home Audio - Bluetooth
Audio Speakers 5.0 High Power Digital Amplifier Stereo Board AMP Home Audio - Bluetooth
40392983707725

Audio Speakers 5.0 High Power Digital Amplifier Stereo Board AMP Home Audio - Bluetooth

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Color: Without Shell
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Estimated to be delivered on 12/01/2022 - 15/10/2022.

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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
if you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

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Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Color: Without Shell

Product Description

SPECIFICATIONS

Brand Name: occkic

Maximum Power Per Channel: 100W

Origin: Mainland China

Package: Yes

Channels: 2 (2.0)

Certification: NONE

Model Number: 502L 50WX2 Mini Bluetooth 5.0 Digital Power Amplifier Board


Product selling point:
1: Potentiometer to adjust the volume, with switch, easy to control the volume, very suitable for DIY speakers
2: Copper DC connector is used, which can withstand large current and does not generate heat
3: left and right double channel (stereo)
4: small size
5: Easy to use



Parameters:
Product Name: Mini Version 2X50W Bluetooth Digital Power Amplifier Board
Product Model: ZK-502L
Adaptive power supply voltage: 5~24V (9V/12V/15V18V/24V and other adapters are optional, and high voltage is recommended for high power)
Compatible speakers: 30W~200W, 4Ω, 8Ω
Number of channels: left and right double channels (stereo)
Bluetooth version: 5.0
Bluetooth transmission distance: 15 meters (no occlusion)
Protection mechanism: self-recovery overheat protection, self-recovery short circuit protection



Tips:
Only when the audio input is sufficient and the power supply voltage/current is sufficient, there will be sufficient output power. The higher the power supply voltage, the higher the relative power, and the speakers with different impedances will have different output power. When the voltage and current are sufficient, the greater the ohm of the speaker, the smaller the relative sound power, please pay attention!



Voltage:
12V ---- 8 ohm speaker/12W (left channel) + 12W (right channel), 4 ohm speaker/20W+20W
15V----- 8Ω/18 + 18W, 4Ω/greater than 30 + 30W
19V ----- 8 ohms/32 + 32W, 4 ohms/greater than 45 + 45W
24V ----- 8Ω/38 + 38W, 4Ω/more than 50 + 50W



Answers to questions:

1. How to choose a power supply?
A: The power supply of the board is very important. The higher the voltage, the greater the current, and the greater the output power. If you only have 12V 1A, you can use 3-4 inch speakers. If you are above 19V 5A, 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 easily distorted after the sound is amplified. If the current is too small, the speaker will not work, and the voltage will be lowered, and the work will not work properly or the sound quality will deteriorate.

It is recommended to use 18V19V24V power supply with a current of more than 3A. If you only have a 9V12V or 1A 2A power supply, it can also be used but the power is low. Note that the volume may be distorted and affect the sound quality.

2. How to choose speakers?
A: Commonly used speakers are generally 8 ohms, and the effect is the same regardless of positive and negative polarity. 4 ohm speakers can also be used. If your speaker power is low, it may be between 10W-30W, and the power supply voltage should be lower to prevent the speaker from being burned after amplifying the sound. For example, choose a power supply below 15V. If you have a 50W-200w speaker, you don't have to worry about burning the speaker. You can choose a 12-24V power supply. The higher the voltage you choose, the greater the output sound or power.

3. How to connect Bluetooth?
A: Power on the power amplifier board, connect the speaker, turn the audio knob to turn on the indicator light, turn on the mobile phone settings--Bluetooth--search for "BT-WUZHI", then click to connect, there will be a ding-dong prompt after the connection is successful, then When it is in Bluetooth mode, just play music, and it will automatically connect back to the phone next time it is powered on.

4. It's okay if the sound is small, but after the sound becomes louder, the sound becomes muddy?
A: The sound is distorted, please change the power adapter with a higher voltage level.

5. It's okay if the sound is small, but when the sound becomes louder, the sound freezes?
A: The power of the input power supply is insufficient, and the power supply itself is intermittently powered off for protection, please replace it with a higher power supply; or the power is too large, the power amplifier board heats up severely, and thermal protection occurs, reduce power usage or strengthen heat dissipation.

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