Brief Instruction:

You may connect this Low-pass Filter Subwoofer Process Circuit with the common amplifier board via the output port to make up the Subwoofer amplifier. It is flexible.
The frequency adjustable range is from 22hz to 210hz. Power supply is AC15V.

Features

• Power Supply: AC15V(5w), you may choose 
  

  AC 5W 15Vx 2 Transformers

• Frequency tuning range: 22hz -210 hz
• PCB Size: 80mm x 40mm x 30mm

Package Include:

PCB,Components,installation drawing.  

Following is the sapmple when the board is finished (what you will receive are just components and you need to assemble it by yourself)

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  Delivery time 

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Return

If you are not satisfied when you receive your item, please return it within 7 days for a replacement or money back.       

Please contact me before you return it.          

Not accept returning of electronic components.          

Full refund after we receive our original item.