XH-A374 50Wx4 4 Channel TDA7850 bluetooth 4.0 Channel HIFI Auido Power Amplifier Class-AB 4 Channels Amplifier Board for Home Car Audio
$37.17
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.
Specifications
Power amplifier chip:TDA7850
Chip type:Class AB (A and B)
Working voltage:DC 12-14.4V
Standby current
Number of channels:4 channels (Stereo * 2 + stereo * 2)
Output power:50W*2+50W*2(4ohm)
Signal to noise ratio:88%
Size:126 x 95 x 29 mm
Installation hole distance:118×87 mm
Q&A
1. Bluetooth connection problem
Answer:The Bluetooth indicator flashes regularly when it is working normally. If it is on or off, it may be a problem with the Bluetooth module. You can contact customer service to handle it.
2. The mobile phone can be connected but the laptop or desktop cannot be connected
Answer:If the mobile phone can connect and play music, it means there is no problem with the Bluetooth amplifier board. It may be a problem with the Bluetooth driver of the computer. The version is too old or there are files missing. It is recommended to uninstall and then install the latest version of the driver.
3. When the volume is turned up, the sound appears to be stuck, intermittently, and can be played for a long time after the volume is turned down
Answer:Reason one:Because the power of the power supply is too small, the total output power of this power amplifier board is 200W. The recommended voltage for power supply selection is 12V and the current is above 18A.
Reason 2:If the power supply is okay, it may be that the power of the speaker is too small, such as outputting 200W, but connecting a 5W speaker. When the volume is turned up, there will be a stuck phenomenon, and the speaker may be burned.
4. There is too much noise when playing music, or there is noise when not playing music
Answer:The function of the power amplifier board is signal amplification. The main source of noise is the radio clutter in the environment that is amplified by the power amplifier board. Therefore, as long as the power amplifier board will have noise, it is recommended to select the audio cable with shielding function as much as possible It may be that the sound source is noisy, and normal mobile phones and MP3s will not. Most of them are on some old pre-boards, which are not compatible with our power amplifier board. You can add audio isolators or couple capacitors to test. See if you can Cannot be removed.
Package Incldued
1 x XH-A374 50Wx4 4 Channel bluetooth HIFI Auido Power Amplifier
Weight | 0.533 kg |
---|
Customers Also Viewed
High-speed Isolation USB To TTL Serial Module Power Isolation Optocoupler Isolation
$15.30Converter BoardAdd to cartOverviewOptical isolation USB to TTL Serial Module Equipped with CH340T USB to serial chip, achieved the power and TTL signal isolation,High-speed and stability, it could avoid the damage of USB and computer blue screen or other issues while use the USB to TTLserial port module, due to improper operation or other external impact on the …
High-speed Isolation USB To TTL Serial Module Power Isolation Optocoupler IsolationRead More
3pcs 3.5mm Plug Jack Stereo TRRS Headset Audio Socket Breakout Board Extension Module
$4.46Converter BoardAdd to cartFeaturesName:Audio breakout board1. TRRS connectors are the audio-style connectors that you see on some phones, MP3 players and development boards.2. TRRS stands for “Tip, Ring, Ring, Sleeve, Inch which reflects the fact that, unlike a standard stereo connector, this actually has three conductors and a ground.3. Some devices use the extra conductor for a microphone …
3pcs 3.5mm Plug Jack Stereo TRRS Headset Audio Socket Breakout Board Extension ModuleRead More
6.5×55 Laser Bore Sighter Red Dot Sight 6.5mm x 55 Brass Cartridge Boresighter Caliber
$20.24Laser BoresighterAdd to cartCaution:Avoid direct eye exposure to the laser beam. Laser radiation is emitted from the aperture.SpecificationHousing Material:BrassLaser Type:Red LaserLaser Wavelength:635~655mmMax Output PowerPower Supply:3Pcs LR41 Batteries (NOT Included)Battery Installation:Positive side facing outwards. Look at your button cell battery, you will see inch+inch on the flat side commonly, which means positive. And the other slightly rounded side is …
6.5×55 Laser Bore Sighter Red Dot Sight 6.5mm x 55 Brass Cartridge Boresighter CaliberRead More
AD584 Voltage Reference 2.5V/5V/7.5V/10V High Precision Reference Source for Voltmeter Calibration
$32.36RF amplifierAdd to cartSpecificationInput voltage:15VOutput voltage:2.5V/5V/7.5V/10VAccuracy:0.0001Warn floating:15ppm/→Size:5*5cm(not included SMA)Package included1 x AD584 Voltage Reference 2.5V/5V/7.5V/10V High Precision Reference Source
5pcs LilyPad MCP9700 Temperature Sensor Module
$16.04Sensor & Detector ModuleAdd to cartDescriptionDetecting temperature changes has never been easier. The MCP9700 is a small thermistor type temperature sensor. This sensor will output 0.5V at 0 degrees C, 0.75V at 25 C, and 10mV per degree C. Doing an analog to digital conversion on the signal line will allow you to establish the local ambient temperature. Detect physical …
76M-108M 2-channel FM Transmitter Board Stereo Wireless Audio Transmission Transmitter Module
$33.20Other Module BoardAdd to cartDescriptionTwo-channel stereo FM transmitter moduleWorking voltage:DC 3V-16VWorking current:17mASize:49mm*31mmFunction description2-channel FM stereo transmissionPower-off memory functionworking frequency displayInput volume and transmission frequency are adjustablesupport wide voltage supplyworking current, small emission efficiency, high power supply, durableRestore factory settingsultra low back noiseInstructions for use– Key:short press, frequency reduction, 0.1MHz;+ key:Short press, increase the frequency by 0.1MHz, long press, restore …
80x50x20mm Corrosion Resistant Aluminum Split Body Aluminum Box Enclosure Case for Electronic DIY
$14.16Electronic Accessories & SuppliesAdd to cartFeaturesHeavy gauge extruded aluminum construction | Easier for drilling, soldering, screwing, problem fixing.Excellent electromagnetic shielding performance;Front and back panels and fasteners are included.Heavy gauge extruded aluminum construction.Excellent electromagnetic shielding performance.Built-in grooves for holding circuit board.Corrosion resistant, lightweight.Durable in use.Great for electronic projects, power supply units, student projects and amplifiers, etc.SpecificationMaterial:extruded aluminumColor:blackSize:80x50x20mmPackage Included1 x 80x50x20mm Enclosure …
4000Peak Power inverter DC12V To AC220V Power Converter Car USB Charger inverter Modified Sine Wave
$157.94InvertersAdd to cartPower InverterFeature– The power inverter can convert DC12V to AC220.– Overload, over temperature, short-circuit, low voltage, over voltage protection.– Stable performance and precise output voltage.Built-in cooling fan with low noise.– Comes with a car charger and a pair of crocodile clip, convenient to use.– Perfect for television, DVD player and other household appliances.Specifications– Color:Black– Frequency:50+/-3Hz– …
Reviews
There are no reviews yet.