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
50Pcs KW12-3 Micro Limit Switch with Roller Lever Open/Close Switch 5A 125V
$16.52Electronic Accessories & SuppliesAdd to cartFeaturesOperating temperature:-40°C to 70°CRated voltage:AC 125V-250VPer weight:2gCurrent rating:5ASize:20 x 10 x 6mm (L X W X H)PCB Terminals Circuit BoardWith Roller Lever LimitWorking principleBy external mechanical force transmission elements (by pins, buttons, levers, rollers, etc.) will be used to force action on a reed, producing reed instantaneous action when action shifted to the critical point, …
50Pcs KW12-3 Micro Limit Switch with Roller Lever Open/Close Switch 5A 125VRead More
129Pcs/Set Silicone Casting Molds and Tools Jewelry Pendant Resin Mould DIY
$20.24Lab TubesAdd 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:129pcs,one …
129Pcs/Set Silicone Casting Molds and Tools Jewelry Pendant Resin Mould DIYRead More
12V 7.5W Polysilicon Solar Panel Battery Charger Clip for Car RV Boat Outdoor
$60.74Solar PanelAdd to cartFeatures Lightweight and convenient to carry Long span life Easy to use Suitable for 12V battery, working temperature 0-60 ℃, reflow protectionSpecificationsMaterial:Grade A monocrystalline silicon solar panelPower:7.5W maxWorking voltage:12V (rechargeable 12V battery)Current:0-625MATemperature:-60 ° CSolar panel size:310 * 190mmPacking size:330 * 205 * 30mmNotice Make sure your battery is good and bad The level of the …
12V 7.5W Polysilicon Solar Panel Battery Charger Clip for Car RV Boat OutdoorRead More
WXD3-13-2W Precision Potentiometer 470R 47K Ohm Wirewound Multi-Turn Potentiometer
$4.50Module ComponentsAdd to cartSpecificationsResistance range:47K┯Resistance tolerance:÷ 5%Rotation angle:3600 ÷ 20 Number of laps:10 lapsRated voltage:160VStarting torque:3.5 ~ 100mN.mRated power:2W (85 →) 0W (125 →)Linearity accuracy:÷ 0.3%Mechanical durability:10,000 weeksPackage included1 x Potentiometer
Mini Diving Equipment Scuba Diving Cylinder Scuba Oxygen Reserve Air Tank Set
$568.00Magnetic StirrerAdd to cartSpecificationsName:0.5L Portable Mini Oxygen Cylinder Air Oxygen Tank Breath DivingBreathing Oxygen CylinderCapacity:0.5LMaterial:Aviation aluminumOxygen cylinder weight:1040gOxygen cylinder dimension:φ6*35.5cm (2.4*14inch)Packing case size:65*10*38cm (25.6*4*15inch)Air capacity:3.0 Cu.Ft / 85 LittersMax. pressure:3000PSI / 200bar / 20MPaMax. dwell time underwater:10minNumber of underwater max. breathing:21 times(depending on individual lung capacity and depth of diving)High-pressure Inflatable PumpHigh pressure air pump material:stainless steelSize:62*26*3.6 cm(24.4*10*1.4inch)Barometer …
Mini Diving Equipment Scuba Diving Cylinder Scuba Oxygen Reserve Air Tank SetRead More
intelligent Dual LCD Pure Sine Wave Power inverter DC48V to AC220V 6000W for Home/Car/industry
$1,188.66InvertersAdd to cartSpecificationsType:Solar inverterOutput voltage waveform:Pure sine waveMatarial:Aluminum shellPower:6000WPeak Power:12000W (5000W Continous)Output voltage:220VInput voltage:48VInput DC low voltage protection:10V±0.5V DCInput DC high voltage protection:15.5V±0.5V DCOutput frequency:50Hz/60HzConversion rate:93% or moreSize:450x180x140mmWeight:8.9KG(Approx.)Appication:Home emergency/Industry/CarFeatures-High-precision circuit board.-Built-in intelligent control chip.-Dual LCD screen integration.-If the machine is abnormal, there will be an alarm.-Screw terminal. Pluggable plug, easy to replace the cable.-Universal socket, strong compatibility,most …
43.8V 1.6A Electric Bike Battery Charger for Scooter Power Supply Lithium Battery Charger
$46.56AC/DC AdaptersAdd to cartSpecificationsName:36V Lithium Battery Charger 43.8V 1.6AColor:BlackSize:155*90*50mm (6.1*3.5*2inch)Input:AC 100-240V 50-60HzOutput:DC 42V 0-2AInput plug:EU PlugOutput plug:1+, 3-Feature– This charger is suitable for all 36V lithium batteries.– Quick charge function.– Suitable for electric bicycle scooter.Package included1 x Lithium Battery Charger
Reviews
There are no reviews yet.