ZK-1002L Bluetooth Power Amplifier Board With Knob - 2x100W

ZK-1002L 2x100W Mini Dual Channel Speaker Digital Power Amplifier Board Wireless Audio Stereo Bluetooth-compatible 5.0 Amp

Specificatoins of ZK-1002L Bluetooth Power Amplifier Board With Knob - 2x100W:

• Product name: Mini version with filter 2x100W Bluetooth-compatible digital power amplifier board
• Product model: ZK-1002L
• Chip solution: Domestic
• With or without filter: Yes
• Adapted power supply voltage: 5-24V (optional 9V/12V/15V18V/24V and other adapters, high power recommended high voltage)
• Adapted speakers: 50W-300W, 4-8
• Number of channels: Left and right dual channels (stereo)
• Bluetooth-compatible version: 5.0
• Bluetooth-compatible transmission distance: 15 meters (unobstructed)
• Protection mechanism: Self-recovery overheating protection, self-recovery short-circuit protection
• Voltage:
• 12V - 8 ohm speaker/24W (left channel) +24W (right channel), 4 ohm speaker/40W+40W
• 15V - 8 ohms/32W+32W, 4 ohms/more than 60W+60W
• 19V - 8 ohms/64W+64W, 4 ohms/more than 80W+80W
• 24V - 8 ohms/72W+72W, 4 ohms/more than 100W+100W
• Product weight: 85g
• Product size: 69x3x22mm

Features of ZK-1002L Bluetooth Power Amplifier Board With Knob - 2x100W:

• 1. Bluetooth-compatible5.0 version, with higher transmission efficiency and longer transmission distance.
• 2. The output audio is filtered, using universal filter components, high-quality sound quality.
• 3. Large-volume black heat sink to ensure efficient heat dissipation.
• 4. The potentiometer adjusts the volume, with a switch, it is convenient to control the volume, which is very suitable for DIY speakers.
• 5. The copper DC connector is adopted, which can bear large current and does not generate heat.
• 6. 4*470uF green gold capacitors ensure the storage capacity, and continuous stable power supply is the prerequisite for good sound quality.
• 7. The free DC head with cable can be compatible with the input power interface of this product, even if you don't have a DC head adapter or battery, you can easily connect.

Extra Notes:

Tip:

Only when the audio input is enough and the power supply voltage/current is enough, there will be enough output power.

The higher the power supply voltage, the higher the relative power, and speakers with different impedances will have different output powers.

In the case of sufficient voltage and current, the greater the ohms of the speaker, the lower the relative sound power, please pay attention!

Answers to questions:

1. How to choose a power supply?

The power supply of the board is very important. The higher the voltage, the greater the current, and the more output power. If you only have 12V 1A, you can bring 3-4 inch speakers. If you are 19V 5A or above, no problem with 8-10 inches, the power supply must be highly valued. If the voltage is too low, it is easy to cause sound distortion after the sound is amplified. If the current is too small, the speaker will pull down the voltage and cause abnormal operation or poor sound quality.

It is recommended to use a 18V19V24V power supply with a current of more than 5A. If you only have a 9V12V or 1A 2A power supply, you can also use it, but the power is small. Note that when you use it, the volume may be distorted and affect the sound quality.

2. How to choose speakers?

Commonly used speakers are generally 8 ohms, you can not distinguish between positive and negative polarities, the effect is the same, 4 ohm speakers can also be used. If your speaker power is low, it may be between 10W-30W. The power supply voltage is lower to prevent the speaker from being burned after amplifying the sound. For example, choose a power supply below 15V. If you are a 50W-300w speaker, you don't need to worry about the speaker burnout. 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 to bluetooth?

Power up the power amplifier board, connect the speaker, turn the audio knob and the indicator light will turn on, open the phone settings--Bluetooth--search for "BT-WUZHI", then click connect, there will be a ding-dong sound after the connection is successful, this time is In Bluetooth mode, you can play music, and it will automatically reconnect with the phone next time it is powered on.

4. It™s okay if the sound is small, but when the sound becomes louder, the sound becomes muddy?

The sound is distorted, please replace 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 is stuck?

If the power of the input power supply is insufficient, the power supply itself is intermittently powered off for protection, please replace the power supply with a higher power; or if the power is too large, the power amplifier board is seriously heated, and thermal protection occurs, reduce the power usage or strengthen the heat dissipation.