50W*2 TPA116D2 2-channel Stereo bluetooth 5.0 Audio Power Amplifier Board Module Aluminum Alloy Shell USB AUX ZK-502D Hi-Fi Wireless Amplifier
$37.17
Color Silver / Color Black /
Shipping:Standard Shipping about 10-25 business days
Secure Payment:Paypal,VISA,MasterCard
Size Conversion
Inches
Centimeters
Please according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size.
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 / 2A or more (the higher the voltage, the greater the output power)
Adapter speaker:15 ~ 100W, 4 ~ 8┯
Output power:15w * 2 @ 12V, 8┯ / 30w * 2 @ 12V, 4┯ / 20w * 2 @ 19V, 8┯ / 40W * 2 @ 19V, 4┯ / 30w * 2 @ 24v, 8┯ / 50w * 2 @ 24v, 4┯
Protection mechanism:overvoltage, undervoltage, overheat, DC detection, short circuit protection
Product size:80mm * 77mm * 22mm
Product weight:140g (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 3A. 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 8 ohms, and the positive and negative polarities can be distinguished. The effect is the same. 4 ohm speakers can also be used. If your speaker power is small, it may be usable between 10W-30W. 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 50W-100W 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 100W, 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.
Weight | 0.15 kg |
---|
Customers Also Viewed
3pcs L298N Motor Driver Module 4 Chaneel Motor Drive Smart Car Module
$41.54Driver ModuleAdd to cartDescriptionThe four channel L298N motor drive module integrates two L298N chips and can drive four DC motors to realize the control of forward and backward rotation and motor speed. The module is equipped with LM2596S step-down chip. If the motor with 7V voltage or more is driven, 5V power can be output to the control …
3pcs L298N Motor Driver Module 4 Chaneel Motor Drive Smart Car ModuleRead More
Geekcreit D1 Mini ESP32 ESP-32 WiFi+bluetooth internet of Things Development Board Based ESP8266 Module
$21.86Motherboard & Development BoardAdd to cartMore informations:https://github.com/LilyGO/ESP32-MINI-32-V2.0DescriptionThis is D1 Mini ESP32 ESP-32 WiFi+bluetooth Internet Of Things Development Board.Use exampleit can also match the next productPackage included4 x Long female pins4 x short female pins4 x Normal pins1 x mini D1 ESP32
AF1020 Dust-proof Probe Super-stable Pipe-type Current-type Temperature and Humidity Transmitter Temperature Senor Humidity Sensor
$176.16Solar CollectorsAdd to cartSpecificationModel:AF1020 Type Temperature and Humidity TransmitterTemperature measurement range:- 40 ~+80 (℃)Measurement accuracy:+-0.5 (℃)Working Voltage 15-36 (V)Humidity accuracy:+-3% RHHumidity measurement range:0-99.9% RHCurrent output:4-20 m AInstructions1. Power cord positive DC18~36V (red wire)2. Power ground wire GND (black wire)3. Humidity current output 4~20MA (yellow line)4. Temperature current output 4~20MA (white line)Installation sequence1. Connect the red, black, yellow and …
3Pcs 5M Meter thermometer Electronic Digital Display FY10 Embedded thermometer indoor and Outdoor Temperature Measurement
$20.72Test & Measuring ModuleAdd to cartFunction introductionOverall size:48*28*15mmInserted hole size:46*27mmLCD temperature display-50→ to 110→ temperature measurement, 0.1 degree resolution.C and F display versions are availableStandard 0.8m waterproof probeCable length:5 meterPackage includes3 x Thermometer
Peacefair PZEM-028 AC Digital Multifunction Meter Voltmeter Ammeter 0~100A/400V Power Factor Meter
$27.97Electronic Accessories & SuppliesAdd to cartError adjustmentThe product is 100% calibrated before leaving the factory, and the user can also manually adjust the error by himself. The method is as followsStep 1:Long press the button (about 3 seconds) until the digital digit on the screen flashes, then release the button;Step 2:Digital flashing means entering the error adjustment state, the digits …
3pcs 433MHz RF Wireless Receiver Module Transmitter kit + 2PCS RF Spring Antenna OPEN-SMART for Arduino – products that work with official for Arduino boards
$12.11Smart ModuleAdd to cartSize ConversionInchesCentimetersPlease according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size.DescriptionThe kit includes one pair of transmitter and receiver modules and one pair of spring antennas for increasing the communication distance. And the frequency is 433MHz. It is very popular for remote …
10pcs DC 3.7-6V To 400KV Boost Step Up Power Module High Voltage Generator
$55.81Power Supply ModuleAdd to cartFeatureThe high-voltage module uses the principle Tesla coil is made of high-voltage pulse output voltage current, small size, high efficiency, simple external circuit(just plug in the switch, the battery can be) discharge intensity violent.SpecificationModel:MC-105Volume:Length 65mm Diameter 24mm, Diameter of cut surface 22mmVoltage:Input DC3.7-6V, output DC200-400KVCurrent:Input 4A, output 0.5ALength:Input 10 cm or so, the output is …
10pcs DC 3.7-6V To 400KV Boost Step Up Power Module High Voltage GeneratorRead More
Reviews
There are no reviews yet.