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
KW-AR-Mini Kit with 17 Classes UNO R3 DC Motor Breadboard LED Components Set Geekcreit for Arduino – products that work with official Arduino boards
$39.35Module KitsAdd to cartFeatureFree TutorialGood kit for Arduino Starter17 ClassesClass 1 Hello Arduino!Class 2 LED Running LightsClass 3 Key ExperimentClass 4 AD Analog-to-Digital conversationClass 5 PWM ExperimentClass 6 Buzzer ExperimentClass 7 The Temperature Sensor ExperimentClass 8 Photosensitive Light ExperimentClass 9 Fire Alarm ExperimentClass 10 Infrared Remote ControlClass 11 UltrasonicClass 12 8-Bit Digital Display ExperimentClass 13 4 x 8 …
2Pcs Mini Football Soccer Goals for Training Junior Kids Children
$136.93Carbon FiberAdd to cartSpecificationsMaterial:Nylon & G-carbonSize:1200*810*810mmColor:Red&GreenWeight:820gFeatures1. This item is great for junior soccer players to practice their shooting accuracy, or just to have fun and play some shooting games.2. Easy to Set Up–The pop up soccer goals are super easy to set up, your kids maybe can do that all on his own, or call some friends to …
2Pcs Mini Football Soccer Goals for Training Junior Kids ChildrenRead More
5pcs 2S 10A 7.4V 18650 Lithium Battery Protection Board 8.4V Balanced Function Overcharged Protection
$19.20Battery Protection ModuleAdd to cartSpecificationsModel:HX-2S-JH20 Overcharge voltage range:4.25±0.05vSize:46.7*23*3.15mm Over-discharge voltage range:2.9v±0.05vUpper limit working current:10A Working temperature:-40—+50°CUpper limit instantaneous current:20A Storage condition:-40– +80°CQuiescent current:less than 10uA Internal resistance:less than 300mΩ Short circuit protection:protection, charge recoveryCharging voltage:8.4V-9VWelding Point Description· B+ is connected to the battery positive pole;· B- is connected to the negative pole of the battery;· MB is connected to …
55Pcs/Set Silicone Casting Molds and Tools Jewelry Pendant Resin Mould DIY
$38.46Painting Teaching ToolsAdd to cartFeatures-This set of making tool is especially designed for DIY expoxy resin crafts, including silicone mold,spoon,sequin,drill,nails and so on.-Different silicone molds have different shapes for you to choose,which may accurately match your various needs.-It is easy control with the reliable quanlity as well as the efficence. -The superior DIY tools for your craft works.SpecificationMaterials:Silicone,MetalType:Making ToolsQuantity:55pcs,one …
55Pcs/Set Silicone Casting Molds and Tools Jewelry Pendant Resin Mould DIYRead More
DIY thermoelectric Peltier Semiconductor Refrigeration Cooling System + Fan Kit
$27.54Electronic Accessories & SuppliesAdd to cartFeaturesSimple operation, strong practicabilityFast cooling, outstanding effectPower supply:12V 15AFan power rate:about 5WFan size:40*40mm Cooling profiles:40*40mm for inlet tube:8mm Screws:3mmNoteMust fititng radiator heartsink when power on, or it will burn the kitThis kit does not comes with PeltierPackage included1 x DIY Thermoelectric Peltier Refrigeration Cooling Kit
5pcs I2C 8-bit I/O Expander Module PCA8574AD Expansion Board RobotDyn for Arduino – products that work with official for Arduino boards
$45.20Expansion Board & ShieldAdd to cartFeatureIf you just don’t have enough digital I/O pins on your for Arduino to interface with all your sensors and controls, you might want to look at using the I2C bus to connect a few port expander chip PCA8574AD have 8 digital I/O bits and can be set to addresses 0x38-0x3F respectively.The I2C bus on …
Ebyte E70-DTU-433NW30-GPRS GPRS Modem 6.5km Wireless Networking Equipment 433MHz 30dbm Networking LoRa RF Module lOT Gateway
$260.04Smart ModuleAdd to cartSpecification Model:E70-DTU-433NW30-GPRSProduct name:iot gatewayProduct advantages:Star self-organizing networkTransmission type:GPRSInterface Type:RS232/RS485Frequency band:433MHzTransmission Range:6.5kmSupply voltage:8 ~ 28V DCSize:108*75*37mmInterface:RS232 RS485Application:Industry Network TransmissionPackage included1 x LoRa RF Module
Reviews
There are no reviews yet.