1. (จัดส่งจากกรุงเทพ) TPA3116 100W Subwoofer Amplifier Board Home Theater Mini Amp Audio Power Amplifiers Bass DC12-24V
description: 1 This is a bass power amplifier board with preamplifier, bass crossover, and bass volume potentiometer control It is for the pros who already have 2.0 amplifiers, and the DIY combination is used for 2.1 amplifiers 2 It is based on TI's TPA3116D2 high performance digital power amplifier chip 3 Use DC power supply 12-24V power supply, wide working voltage, power-saving design, efficiency up to 90% Supports up to 100W (Bass) bass channel output 4 You can use a good performance switching power adapter, notebook switching power supply, or rectified and filtered transformer power supply, you can also use a rechargeable source, or car power supply, etc.. 5 Boot anti-shock protection design, there is no POP popping at boot, please pay attention to the high requirements 6 The board is a finished board that has been soldered and tested Connect the speaker according to the picture, and input it with audio input and power Technical
Parameters: Board
Size: 55 X 83 X 29mm (excluding the protrusion of the potentiometer 15mm) Operating voltage
range: DC9-25V (current 2-3A or more, if the power is larger, it is recommended to be 19-24V4A or more) Frequency response
range:
Input: 20Hz-20KHz
Output: 20Hz-180Hz Audio input
sensitivity: 500mV Subwoofer
impedance: 2-8 ohm
Note: 1 Output power and power supply voltage, speaker impedance, and audio source input size Usually the power supply voltage is higher and the supported output power will be larger 2 Speakers with different impedances can support different output powers Usually, the power of the speakers is smaller and easier to achieve Wiring method
(important): Instructions for checking the web page before use >> 2 Connect the speaker cable >> 3 Connect the audio input cable >> 4 Confirm the wiring is correct, and finally plug in the power To change the wiring or move the board, you must remove the power before operating Incorrect use, short circuit between solder joints, or short-circuit between parts can cause chip damage About power supply
selection: 1 The board is powered by DC power supply, with positive and negative reverse connection protection, positive and negative connection and no power 2 The power supply is not allowed to be connected to the speaker output interface incorrectly, which will cause damage to the power amplifier chip 3 The maximum working voltage is 25V
(Note: Do not use more than 25V when using) 4 The board is powered by DC power supply Please use a good DC power supply If the power supply performance is poor, there may be hum, or current sound.. Especially for switching power supply, please try to use the grounding pin 3 , similar to a laptop 3-pin AC plug
Note: Household AC power strips must be grounded If they are not grounded, some switching power supplies may have current sounds 5 If you use ordinary AC transformer power supply, you must add rectification and filtering before y