Introduction: DIY Down Firing Port Active Subwoofer

By www.youtube.com/SteveWillsonKuju
About: Hi my name is Steve and i'm a Creative and I got Technical skills i can build anything just stick to my account . I'm a YouTuber so you also can see my all videos here https://www.youtube.com/SteveWillsonKujur

Hey! everyone My name is Steve

Today I’m Gonna show how I Build this 12” Active Subwoofer with Down Firing Port using a 280 Watt Class D plate amplifier

I’ve tuned the Enclosure to 35Hz, The bass I get is very strong and there is no port noise The Amplifier is Great No heating issue

Click Here to See The Video

Let's Start

Step 1: Features

Input Power

  • 110 - 220V AC

Output Power

  • 280Watt RMS @ 4Ohms

Impedance

  • 4 Ohms

Frequency Response

  • 20Hz - 200Hz

Built-in Protection

  • Over Load Protection
  • Short Circuit Protection
  • Over Heat Protection

Step 2: Thing I've Used

Banggood

Amazon

Aliexpress

Note - Please see the images for better understanding

Step 3: Sponsor

Today's Article is Sponsored by lcsc.com

They are the Largest Electronics Components Supplier From China Ready to Ship within 4 Hours and they ship World Wide

Step 4: Cutting

I used 18mm MDF and used my Table saw Bosch GTS10J to cut it

Dimensions

  • 59 x 35.5 cm 2 Pieces up and down Panel
  • 59 x 35.5 cm 2 Pieces Side Panel
  • 39 x 35.5 cm 2 Pieces Front & Back Panel
  • 32 x 35.5 cm 1 piece middle panel


Note - Please see the images for better understanding

Step 5: Assembly

I used wood glue and corner clamp to hold it

Note - Please see the images for better understanding

Step 6: Chamber

I used a piece of wood to divide 2 chambers one for amplifier and one for subwoofer

I've installed it 2" deep from the back and used Nails to hold it and then I used wood glue to seal it


Note - Please see the images for better understanding

Step 7: Front Panel Assembly

I used wood glue and nails to hold it

Note - Please see the images for better understanding

Step 8: Back Panel Assembly

I used a Jig Saw to cut mounting for the plate amplifier and then used wood glue and nails to hold it

Note - Please see the images for better understanding

Step 9: Finishing

I used wood filler to fill all the imperfections and then used a sander to finish it up and then used a Round Over bit to round the edges

Note - Please see the images for better understanding

Step 10: Circle Cutting

I used a circle cutting jig to cut the speaker hole and port hole

Note - Please see the images for better understanding

Step 11: Panting

I have gone with black and this is a Speaker Cabinet Paint it gives a rough texture I applied it using a paint roller

Note -Please see the images for better understanding

Step 12: Matt Finish

Matt Black looks Fantastic

Note - Please see the images for better understanding

Step 13: Port

I used a 4.3" dia and 14" Length PVC Pipe and used masking tape to make it a tight fit and then used spray paint to paint it

Note - Please see the images for better understanding

Step 14: Legs

First, I drilled 4 holes and used 1" rubber legs and then tighten it with some wood screw

Note - Please see the images for better understanding

Step 15: Wiring

I drilled a hole in the middle chamber for passing speaker wire and then used some glue to seal it

Note - Please see the images for better understanding

Step 16: Subwoofer Installation

I used a centre punch to mark and then used a drill to make holes for screw and then I used a Spoung tape to make it leak-proof and then tighten up the Subwoofer using 8 Screw

Note - Please see the images for better understanding

Step 17: Amplifier Installation

I drilled 4 holes for screw and then I plugged the speaker wire to the amplifier and then used 4 screws to tighten it up

Note - Please see the images for better understanding

Step 18: Finished

  • Plug the power wire
  • Plug the input wire
  • Adjust the controller
  • Enjoy

That's all for today guys!

Click Here to See The Video

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