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
Solar Powered Floating Bird Bath Water Fountain Pump Pond Pool Water Pump
$42.51Electrical Pump & ValveAdd to cartDescriptionThis product is solar-powered decorative fountain.It is made up of highly efficient solar panel and new brushless pump.IT is start-up fast,efficient and strong stability.In addition,it has no electric outlet or external battery,so it’s not only easy to use,but also safe.This product is suitable for bird bath,fish tank,small pond,garden decoration,water circulation for oxygen,etc.FeatureSolar panel:7V/1.4WBrushless pump input:DC4.5-10VMaximum …
Solar Powered Floating Bird Bath Water Fountain Pump Pond Pool Water PumpRead More
Vibration Switch Sensor Module Vibration Sensor Alarm Module Smart Car Accessories
$4.36Sensor & Detector ModuleAdd to cartFeatures 1. Onboard LM393 voltage comparator chip and vibration sensing probe2. Support 5V/3.3V voltage input3. Onboard signal output indication, the output valid signal is low level and the indicator light is on, the output signal can be directly connected with the single chip IO4. The sensitivity of signal detection can be adjusted5. With 3mm screw …
Vibration Switch Sensor Module Vibration Sensor Alarm Module Smart Car AccessoriesRead More
TPA3116 Dual Channel 50Wx2 Digital Amplifier Board
$23.15Amplifier BoardAdd to cartSpecificationPower amplifier chip:TPA3116Power supply voltage:11 ~ 26VDC DC input with limit reverse polarity protection(Recommended DC 24V current 3A and above switching power supply)Output power:stereo 50W + 50W, PBTL monaural 100WLoad impedance:4 to 8 ohms (horn speaker impedance)Audio input:2.54mm3 pin seatPackage Included1 x Digital Amplifier Board
5pcs Geekcreit 3 in 1 AC 60-500V 100A Square Yellow LED Digital Voltmeter Ammeter Hertz Meter Signal Lights Voltage Current Frequency Combo Meter indicator Tester with Round CT
$48.24Electronic Accessories & SuppliesAdd to cartDescriptionDisplay:Voltage, current, frequencyDisplay color:YellowMeasuring voltage range:60~500V AMeasuring current range:6~100AMeasuring frequency range:20-70HzSize:2.8*5cm/1.10inch*1.97inch (D*H)Note:Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!!Package included5 x 22MM Indicator5 x Round CT
5pcs Nano V3.0 Terminal Adapter AVR ATMEGA328P without NRF2401+ Expansion interface DC Power Board
$38.18Expansion Board & ShieldAdd to cartFeature1. The item is a terminal expansion adapter, working very well for prototyping Nano projects2. There are pins expansion hole for the NANO board, which can directly lead the pins; With DC power supply interface, you can directly add external power or battery to supply power3. With NRF2401+ expansion interface, you can insert NRF2401+ to …
Reviews
There are no reviews yet.