ZK-502D bluetooth 5.0 Audio Power Amplifier Module Board 50W*2 Dual-channel Stereo Aluminum Alloy Shell

ZK-502D bluetooth 5.0 Audio Power Amplifier Module Board 50W*2 Dual-channel Stereo Aluminum Alloy Shell

Name: ZK-502D bluetooth 5.0 Audio Power Amplifier Module Board 50W*2 Dual-channel Stereo Aluminum Alloy Shell
Brand: Elecbee
SKU: EB0051661
Price: 20.99 USD
Availability: InStock
Rating: 139 / 29 (29 reviews)

$20.99

SKU: EB0051661

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ZK-502D bluetooth 5.0 Audio Power Amplifier Module Board 50W*2 Dual-channel Stereo Aluminum Alloy Shell

EB0051661

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Description

Power: 100W

Precise details>>

Precise details:

Feature:

Product name: 50w * 2 Bluetooth 5.0 audio power amplifier module

Product model: ZK-502D

Bluetooth version: 5.0 (unobstructed, 15 meters)

Signal to noise ratio:> 95dB

Input method: USB + AUX + BLUETOOTH

Number of channels: left and right dual channels (stereo)

Amplifier chip: TPA116D2 (with AM interference suppression function)

Adaptable power supply: DC9-24V / 5A or more (the higher the voltage, the greater the output power)

Adapter speaker: 20 ~ 200W, 2 ~ 8Ω

Output power: 20W * 2 @ 12V, 8Ω / 35W * 2 @ 12V, 4Ω / 35W * 2 @ 19V, 8Ω / 60W * 2 @ 19V, 4Ω / 50W * 2 @ 24V, 8Ω / 90W * 2 @ 24V, 4Ω

Protection mechanism: overvoltage, undervoltage, overheat, DC detection, short circuit protection

Product size: 100mm * 77mm * 22mm

Product weight: 185g (including packaging)

Prompt:

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

The higher the power supply voltage, the greater the output power, the smaller the speaker impedance, the greater the output power!

Please make sure that the power of the adapted power supply is greater than the actual working power of the amplifier!

Package includes:

1 x Audio Power Amplifier Board kit (The power adapter is not includes)

Question & Answer:

Q1. How to choose the power supply?

A: The power supply of the board is very important. The higher the voltage, the higher the current, and the greater the output power. If you only have 12V 1A, you can use a 3-4 inch speaker. If you are above 19V 5A, there is no problem with 8-10 inch speaker, 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 pull down the voltage, and will not work properly or the sound quality will deteriorate.

It is recommended to use 18V/19V/24V power supply, the current is more than 5A. If you only have a 9V/12V or 1A, 2A power supply, it can also be used but the power is small. Note that the maximum volume during use may be distorted and affect the sound quality.

Q2. How to choose speakers?

A: The commonly used speakers are generally 4-8 ohms, and the positive and negative polarities can be distinguished. The effect is the same. 2 ohm speakers can also be used. If your speaker power is small, it may be usable between 20W-50W. The supply voltage is lower to prevent the speaker from being burned after the sound is amplified. For example, choose a power supply below 15V. If you are a 100W-200W speaker, you don't need to worry about the problem of speaker burnout， you can choose a 12-24V power supply, the higher the voltage, the greater the output sound or power. Speaker power should not exceed 200W, otherwise it will affect the sound quality.

Q3. How to select the audio input mode?

A: This audio power amplifier module follows the principle of hardware connection priority. USB connection is successful in USB mode, AUX plug-in is in AUX mode. If USB is not connected and AUX is not plugged in, it is Bluetooth mode, Bluetooth mode supports automatic connection back. There is a mode prompt tone when the mode is switched. When selecting the USB audio input mode, it should be noted that USB can be directly connected to devices such as computers with USB audio output, without installing a driver. USB input is lossless input, good sound quality, no interference, no noise.

Q4. The sound is okay. When the sound becomes louder, does the sound appear muddy?

A: The sound is distorted. Please change the power supply of the adapter with higher voltage level.

Q5. It's okay when the sound is small, but when the sound becomes louder, the sound freezes?

A: There may be two reasons: 1. Insufficient input power, intermittent power-off protection of the power supply itself, please replace with a larger power supply; 2. Too much power, the power amplifier board heats up seriously, and thermal protection occurs. Should reduce the use of power or strengthen heat dissipation.

ZK-502D-bluetooth-50-Audio-Power-Amplifier-Module-Board-50W2-Dual-channel-Stereo-Aluminum-Alloy-Shel-1748844

Feature:

Product name: 50w * 2 Bluetooth 5.0 audio power amplifier module

Product model: ZK-502D

Bluetooth version: 5.0 (unobstructed, 15 meters)

Signal to noise ratio:> 95dB

Input method: USB + AUX + BLUETOOTH

Number of channels: left and right dual channels (stereo)

Amplifier chip: TPA116D2 (with AM interference suppression function)

Adaptable power supply: DC9-24V / 5A or more (the higher the voltage, the greater the output power)

Adapter speaker: 20 ~ 200W, 2 ~ 8Ω

Output power: 20W * 2 @ 12V, 8Ω / 35W * 2 @ 12V, 4Ω / 35W * 2 @ 19V, 8Ω / 60W * 2 @ 19V, 4Ω / 50W * 2 @ 24V, 8Ω / 90W * 2 @ 24V, 4Ω

Protection mechanism: overvoltage, undervoltage, overheat, DC detection, short circuit protection

Product size: 100mm * 77mm * 22mm

Product weight: 185g (including packaging)

Prompt:

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

The higher the power supply voltage, the greater the output power, the smaller the speaker impedance, the greater the output power!

Please make sure that the power of the adapted power supply is greater than the actual working power of the amplifier!

Package includes:

1 x Audio Power Amplifier Board kit (The power adapter is not includes)

Question & Answer:

Q1. How to choose the power supply?

Q2. How to choose speakers?

Q3. How to select the audio input mode?

Q4. The sound is okay. When the sound becomes louder, does the sound appear muddy?

A: The sound is distorted. Please change the power supply of the adapter with higher voltage level.

Q5. It's okay when the sound is small, but when the sound becomes louder, the sound freezes?

ZK-502D-bluetooth-50-Audio-Power-Amplifier-Module-Board-50W2-Dual-channel-Stereo-Aluminum-Alloy-Shel-1748844

Reviews (29)
comment

Q & A

: Where is the origin of Elecbee products? Are they certificated?

2023-03-03

Answer:

Elecbee has long-term cooperation agreements with the OEM factories in China. So that we are able to reduce the intermediate channel cost, and help you save money. Our products are all made strictly according to the relative global standard, to ensure the products have good compatibility and excellent quality.

2023-03-03

: What forms of payment do you accept?

2023-03-03

Answer:

Our main payment methods include Paypal, Credit Cards, Debit Cards, Bank Transfer, and more to discover. Please choose the payment methods in your favor.

2023-03-03

: When will you arrange shipment?

2023-03-03

Answer:

After confirming receipt of your payment. We will arrange the delivery as soon as possible and upload the courier number to the website for you to track.

2023-03-03

: How to exchange or return?

2023-03-03

Answer:

1. You can apply to return within 30 days after receipt of the goods. Please make sure the outside package is intact, and the product is in its original condition. We will arrange your refund according to the relevant provisions once the package is received.

2. Return process: You Apply for a Return - Approve the Return - Arrange a Return - Receive the Products and make Inspection - We arrange a Refund;

3. We will bear the freight charges for returns caused by us, for instance, the quality problem. As to returns caused by the buyer, the buyer should be responsible for the shipping fee.

2023-03-03