What Inside of SN-806BT SN806 Power amplifier

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What is the power IC of SN806?



Hello there, I buy this 2 channel with no rated watts print on the box with Bluetooth amplifier and i test to two 4 ohms 8-inch subwoofer and 2 satellite speaker result in it give sound clear and balance.
The rated watts found on the internet is info above was Out power: RMS 15X2(100) 15X4(200) but Im not satisfied for wattage output same as from specs,
This stuff is an Amplifier have a nice front design with one input microphone and have a nice LED VU meter.
The model indicates on housing is KUKU SN-806BT with MMC card-slot is for SD card only not fit for TF card.
There is a 2 audio input L/R and 2CH output for a speaker at the back housing.
Also, there is 220v male socket and 12V DC input with printed of  DC12v5A for the car battery.
This can use in a home and car audio and multi-purpose amp, Let see to unboxing it what is inside.

Information Spec. found from seller
Model: SN-806BT characteristics: - Bluetooth - LCD display - MP3 player - Slot USB drive - Slot Micro SD card memory - Radio FM frequencies: 87,5MHz - 108MHz - With remote control.
Frequency response: 20Hz-20KHz - Harmonic distortion: ~ 0,05% 4W 1 KHz - Signal / noise ratio: 85dB -High control: 12dB ± 10KHz
Control Boost: 12dB ± 10KHz - Signal level: 220mv 47K - Power: 220V-240V - Dimensions: 16 x 15 x 5.5 cm.

  • Bluetooth Audio Amplifier With Remote Control(Black)SN806
  • Input voltage:DC12V
  • Frequency response:20Hz-20KHz
  • Out power:RMS 15X2(100W) 15X4(200W)(1KHz)
  • Harmonic distortion:<=0.05% 4W 1KHz
  • SNR=85dB
  • High control:12dB+-10KHz
  • Bass control:12dB+-100Hz
  • The signal level:220MV 47K
  • Reader,U-disk formal:MP3,FM
  • FM Frequency Range:87.5MHz-108MHz


OK Lets UNBOX this STUFF


I take a screenshot picture after I unboxed this amplifier to know more and maybe you want to know also that's why you are here my blogs ^_^.

- There was 4 PCB inside! Chipset reader, VU meter, button/control, and Power Amp. separated from each other.
- It has a transformer for AC220v but there is no info print indicate - I think it is 12v-14v.
- I  find  Pre-amp IC which is printed indicate is RC4558D and Mic transistor Pre-amp is C9014.
- There is chipset reader that controls the Bluetooth USB, SDcard, FM receiver in 1 combo.
- There is only 1 Power amp IC which deliver 2CH output - Hmm. I think this is why I'm not satisfied for output wattage, Look at fig below.




Anyway, This is a very cheap price for a good looking power amplifier with LED VU meter right, But for me the info wattage specs from a seller, not same to the output.

In my opinion, it can easily REMAKE this model if want huh!" optional" Look at the figure above, The motherboard of Power amp IC is separate from control motherboard.
I imagine to replacing the Power Amp motherboard of this SN-806BT SN806 and insert a good better High wattage IC circuit like TDA7293 a 100W RMS power output Yeah!

Take a look a screenshot what print indicate on IC of Power amp PCB of SN-806BT SN806





The Power amp IC is TDA7057AQ which is RMS 2×8W stereo BTL audio output amplifier.
What do you think? Anyway its very cheap price for this stuff you can remake it I said before, Change the power amp with high wattage and you will be satisfied.

Watch a Video of Unboxing KUKU SN828 SN806 was the same board.


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Comments

Unknown said…
sir, how can i connect this to my laptop? what speaker do i need? and can i use my microphone condenser through this amplifier to my laptop? please reply, thanks!
March 23, 2019 at 1:59 PM
Anonymous said…
Hello,
You can connect it via Bluetooth or headphone jack to RCA input.
Speaker may use as a spec of IC is max 80-150Watts 8 inch 4-8Ohms.
Microphone direct to the jack mic input of an amplifier.
Have a nice day-Admin
March 23, 2019 at 2:40 PM
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