Passive Cell Phone Speaker




About: Hey! Welcome to my Instructables page! I love to create and make stuff and decided why not share to how to make them with everyone!

Hey everyone!

Here's a new Instructables for a fun and quick project I put together, the passive cell phone speaker!

This project was made out of some pine boards I had and a new 16-piece hole saw kit I purchased.

So with out further ado, let's get started!

Step 1: Cutting Out the Wood Sections

The first step I took, was to take the pine boards over to my chop saw and cut out 8 - 6x6 inch pieces.

Step 2: Marking the Centers

Next, I took each of the 8 pieces and found and marked the center on each one of them.

Step 3: Cutting Out the Holes

Then, I took out my 16-piece hole saw kit and picked out eight different sized saws (going from larger to smaller) to cut holes in my pine pieces. I basically wanted to cut stair step holes, in order to sand down the sound funnel later on.

Step 4: Gluing Up the Pieces

After cutting and sorting out my pieces, I glued them all up to create the body of the speaker.

Step 5: One Glue Up Later...

Step 6: Sanding the Edges

Next, I took it and started to sand and smooth down the outside edges.

Step 7: Shaping the Speaker

Next, I started shaping the funnel for the speaker.

This part was a lot more work than I intended and took a few different methods before I finally got the shape down to what I wanted.

Step 8: Cutting Out the Sound Hole

The last piece that I needed to add was the section for the sound to travel through from the phone.

I created another funnel shape for the both the phone to sit into and for the sound to travel down into the speaker. I then glued it to the rest of the speaker, along with the back pine piece.

Step 9: Pre-staining

After it glued up, I took some Minwax Pre-Stain wood conditioner to prepare the speaker for the stain I would put on.

Step 10: Staining

Then after the pre-stain dried up, I added some Minwax 'Golden Oak' wood finish to add some color to the speaker and really help the grain pop.

Step 11: Turn It Up!

Voila, the speaker is complete!

This was a fun and quick project that I think turned out really well.

Let me know if you have any questions, and let me know what you think!

Be sure to watch the video on how this was made, and to hear the speaker in action:



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    10 Discussions


    2 years ago

    oh, this looks wonderful! I wonder if I could hint at this for a birthday present from my DH?

    1 reply

    2 years ago

    I wonder if it would work as well without the internal sanding?

    1 reply

    Reply 2 years ago

    This thought crossed my mind MANY times while trying to sand it down. Didn't get a chance to give it a try, but that would definitely be interesting to see (or hear rather).


    2 years ago

    Love it. This is a neat project, falling into a well-known category of 'Ooh, what can I make with my new tool set?' But I think what stands out is the job you did with the end grain patterning, it really makes it pop! The S's almost line up perfectly, it'd be something to shoot for for somebody trying to squeeze a style point out of your already functional & aesthetic design. Thanks for sharing a bright idea.

    1 reply

    Reply 2 years ago

    Thank you so much for the kind words! Noticed right after I glued it up that I almost had a perfect pattern going on the side!