ZK-502L HIFI Sound Amplifier Digital Amplifier Module Audio Wireless Bluetooth H

Product Description

ZK-502L HIFI Bluetooth Digital Power Amplifier

Description:

1. Built-in volume adjustment button, easy to use, with power button, suitable for home DIYHiFi audio
2. Version 5.0 Bluetooth module, the transmission signal is more stable and clear, and the transmission distance is longer (15meters ≈ 49feet)
3. Use 470uf35V solid capacitor for power supply, stable power supply, improve heat dissipation efficiency, and provide stable and continuous audio digital signal

Specification

Product name: High-power HiFi audio power amplifier
Product model: 502L
Bluetooth: version 5.0
Number of channels: left and right channels (stereo)
Applicable speakers: 30W-100W 4Ω-8Ω
Working voltage: 5V-24V (for high power, high voltage is recommended)
special function:
Overheat protection (automatic recovery)
Short circuit protection (automatic recovery)
Colour: Black

NOTE:

1. The Bluetooth transmission distance is affected by obstacles. Up to 15 meters without obstacles ≈ 49 feet
2. If installed in a metal speaker, the Bluetooth antenna needs to be extended out of the box
3. Precautions for use: The power switch on the board is a sleep switch. After turning off the switch, the machine is in a low-power standby state. To completely turn off the power or not use it for a long time, you can unplug the DC plug on the machine, which is the power cord
4. If you buy an amplifier with a shell, the shell needs to be assembled by the buyer
5. If you encounter any problems during use, please contact our customer service, we will answer you as soon as possible

Frequently Asked Questions and Answers

1.Which power supply should I use?
The board's power supply is very important. The higher the voltage, the greater the current, the greater the output power, and the better the sound quality. If you use 12V 1A input, you can bring a 3-4 inch small speaker. If you are 19V 5A and above, you can use an 8-10 inch speaker. If the voltage and current are too low, the sound will be noisy, and the sound will be distorted and not working when the volume is increased.
It is preferred to use a power supply with a voltage above 18V19V24V and a current above 3A. Use at least 9V1A or 12V2A input power. Below this voltage and current will cause the power to be too small. Please pay attention to the volume when using it, because the voltage and current are insufficient. Too high volume may affect playback Sound quality.

2.How to use Bluetooth mode to play music
Turn on the amplifier and connect the speakers, turn on the audio button until the blue light is on. Open the phone settings-Bluetooth-refresh the Bluetooth list-until "BT-WUZHI" appears, and then click Connect. If the connection is successful, there will be a beep, and then you can use Bluetooth to play mobile phone music. Next time you turn on the amplifier, it will automatically connect to your phone. If playing music freezes in Bluetooth mode, please check the power amplifier power and Bluetooth signal. When the power supply is insufficient, please replace the adapter power supply. When the Bluetooth signal is insufficient, please extend the Bluetooth signal antenna out of the housing.
3.How do I choose the audio
The choice of audio is the power of your amplifier. When your power amplifier voltage is lower than 15v, you can use 10w-30w speakers. If you use a power supply voltage greater than 15v, you can use 50w-200w speakers. If using low-power speakers. Please do not use high-power amplifier power supply, so as not to burn the amplifier. It is recommended to use high-power amplifier power supply and high-power audio to get a better volume and experience
4.Why is the sound interrupted after using the amplified volume for a period of time?
Insufficient input voltage and current caused the power amplifier to not work properly. Please change to a higher power supply.
The input voltage and current are too large, and the heating is serious, and the overheating protection is triggered. Please reduce Poweror increase heat dissipation.

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Returns

Your satisfaction is important to us. Hexlight offers a 14-day Free return policy: if you are not fully satisfied with your purchase, you may request either a full refund or an exchange. All return shipping costs are fully covered by us.

Condition

Brand New

Shipping

This item is shipped directly from our supplier in China with tracking.