Mini Subwoofer Amplifier TPA3116

I buy this mini board for nearly $12 on Aliexpress.
this subwoofer amplifier kit contain an power amplifier TPA3116 with 100 Watt power output capability, frequency control (Subwoofer Cut-Off Frequency), and some type of input connections.
the board is good built quality, very tidy, have mini size, small enough to fit in my palm.
i use it for add sub bass on my 2.0 mini speaker, and finally makes 2.1 sound system...
specification information based from product page:
Subwoofer Amplifier Board use TPA3116 chip, Support 100W Bass Output.
Board Size:50*76*29mm
Operating Voltage:DC 12-24V
Frequency Response: input 20Hz-20KHz, output 20Hz-180Hz
Audio Input Sensitivity:500mV
Loudspeaker Impedance: 2-8 ohm
Output Power support in arround 100W Bass Output if use 24V and 2-3 ohm speaker impedance.
i think this kit with passive subwoofer speaker is harmonious if paired with 2.0 computer speakers, active speakers, or used in home theater systems, this subs kit can also improve the sound of stereo systems.
Subs can provide a foundation to the sound that few speakers can muster on their own.
So adding a sub is not just about adding more and deeper bass; rather, a properly integrated subwoofer can improve the overall sound of the system.
because the power is support in arround 100W Bass Output, so its suitable to work with small to medium size subwoofer speaker.
we can use this kit module to create home subwoofer amplifier, home theatre subwoofer amplifier, or to add subwoofer in existed 2.0 audio speaker and makes it 2.1 speaker system.
if you have mini 2.0 speaker system, ie: Altec Lansing BXR1220, Edifier R900T, dbE NS77, Logitech Z120, you can try this subwoofer kit and subwoofer speaker to add sub-bass to your speaker system.
audio input can be any audio device, ranging from laptop, Android smartphone, Iphone, PC, Game console, MP3 player, DVD, etc.
if audio device source have very small audio output ie:old smartphone, its better to add some op-amp module between audio source and this subwoofer kit to make sound be better.
pros:
small & compact size, low heat & very efficient, have volume & frequency control
cons:
limit to arround 100 Watt, not have phase switch

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