Recently I was bought TPA3116 Class-D Digital Audio Amplifier on Online shop, that price about $12USD. This TPA3116 Power Amplifier has 2.1 channel output that has 2 midrange output speakers and 1 output for subwoofer speaker. In the mid output or L / R output of each power has 50w, while the subwoofer has a power output of 100W at 4 Ohm impedance. Below the description or wiring connection of TPA3116 2.1 Class D Amplifier:
Diagram TPA3116 Class-D 2.1 Power Amplifier
The amplifier board adopts two imported TPA3116D2 digital amplifier chip as the core,one piece as left and right channel power amplifier,other piece as pre-bridge briver with NE5532 subwoofer ,with a small ,high effeciency,high power characteristics.
Product name:2.1-channel audio amplifierChip Select:TPA3116D2
Supply voltage:DC 12-24VOutput power:50Wx2+100W Subwooferx1
Number of channels:3(left channel,right channel,subwoofer)
For the use of power supply, this power amplifier does not require so large working voltage. You can use 12VDC voltage to work on the TPA3116 power amplifier. However, to use a power amplifier with a maximum power, I recommend using a maximum voltage of 24VDC. In this project, I'm using 12VDC Switching Power Supply with current 8 Amperage.
In this experiment, I tested power amplifier using 12 Inch subwoofer speaker with 200W 4 Ohm impedance for the subwoofer channel. And 2 x Midrange 3.5 inch along with tweeters. Here's a picture of its speakers and video test.
Video test TPA3116 Class-D Power Amplifier 2.1 Channel
My other Project with TPA3116 Class-D amplifier with 6-inch Subwoofer