LM3886 Bi-Amplifier Circuit Board PCB for Active Studio Monitor Speaker Mono Bi-Amp Power Amp Sound DIY
The product is a blank PCB. There are no components on the this circuit board.
PCB Features:
-2 Layer PCB
-Material:FR-4,
-Copper Thickness: 1oz
-PCB Surface Finish: HASL with lead
-Colour: Yellow
-Dimensions: 130 x 94.9 x 1.6 mm
Super quality PCB. Solder pads are corrosion resistant. Soldering quality is very important in audio and high-frequency circuits. Thanks to the quality lead finishing on the Pads on the PCB, the soldering process is high quality. PCB quality greatly increases the operating performance of such circuits.
*This project was designed with simple components that easy found on market.
*The way this amplifier working is when mono signal (Balanced / Unbalance ) give to the TRS input or XLR input, the signal will be divided by two way active cross over system with cross over point at 2KHz.
*The signal separated by two way :
-Low freq processed by lowpass filter and will be amplified by LM3886 final stage amplifier U3 and delivered to woofer speaker
-High freq processed by highpass filter and will be amplified by the next LM3886 final stage amplifier U2 and delivered to tweeter speaker
*Both of them will work and produce sound that matches with the character of the speaker at the same time. To make stereo you need to build 2x of this circuit.
This circuit need 24V-0-24V /3-5Ampere transformer / for mono.
You can access installation of the circuit, bill of materials, schematic and all the technical details in the video.
Video:
youtube.com/watch?v=cjHCrJ4kRWI
![](https://ae01.alicdn.com/kf/U0a84a98df51544e89b25904c46afcd5dn.jpeg)