How to Build a DIY Cell Phone Amplifier AND Charging Station

FEEL FREE TO ASK ANY QUESTIONS BELOW. This acoustic cell phone amplifier is easy to build and increases the sound level by 8-10 db without requiring any power. With a clever port for running a charging cable, you can also charge the battery while listening to music. This is a quick project, requiring only a few dollars worth of material.
Dimensions of each piece as shown in the diagram at 1:40 :
Top Plate: 2" x 11.25" x .5"
Front/Back: 3.25" x 11.25" x .75"
Base pieces x 2 (before angled cuts): 2" wide x 2.25" tall x 5.25" long

[@LuisPerez-hj6pt]

Great instructional video. I have seen several videos of this particular project, this one is the best I have seen by far.

[@ToolMetrix]

Thanks Luis🙏 !

[@dfu1685]

Very well done. Excellent walkthrough with examples and alternatives. I also appreciate the research by popular opinion prior to this filming. Makes me feel like I’m not just blindly trying to build a failure. Thank you Sir!

[@ToolMetrix]

Thanks for watching and for sharing your thoughts. Cheers

[@bourkey07]

What a fantastic little speaker! Great job on the video mate, very well put together.

[@ToolMetrix]

Thanks Jason🙏!

[@jayw.4293]

Great simple design! Thanks for posting this, made some out of oak, really great gifts

[@ToolMetrix]

Awesome, thanks 🙏

[@marcoborges9864]

Very nice! Thank you!

[@ToolMetrix]

Thanks for the feedback, Marco!

[@michaelbedell6523]

You nailed it!

[@ToolMetrix]

Thanks 🙏!

[@harpodjangorose9696]

Very cool.

[@ToolMetrix]

Thank you! 🙏

[@arnulfoacevedosoto7956]

Lo felicito por su gran explicacion, me voy hacer uno

[@ToolMetrix]

Gracias por sus amables palabras y mucha suerte con su proyecto.

[@JRLNeal]

Great little project thanks. However my iPhone X has a speaker on the front top centre and the other (for stereo) bottom edge to the right. So I’ll have to modify the design to get full stereo effect and put the phone in sideways.

[@ToolMetrix]

Hi John, that'd be an interesting adaptation. It's funny; I have an iPhone X and didn't even realize that it had a top speaker until you just mentioned it. :) I'd love to see what you come up with.

[@nice-jp4gp]

good video for my phone amplifier bulid

[@ToolMetrix]

Awesome. Thanks for watching. Cheers

[@qiks3630]

Made a great project Thanks

[@ToolMetrix]

That's great to hear! Thank you for letting me know.

[@chknmstr]

Thank you for sharing! Great project! Thinking of building one but still unclear on several details. Is this amplifier for phones with two bottom speakers? The phones I've seen had only one speaker on bottom right.

[@ToolMetrix]

Thanks for the nice feedback. It should work well with any phone that has at least one speaker on the bottom. Doesn't require two on the bottom. It will amplify the sound out both directions from a single speaker.

[@bobbby303]

Great video, very thorough and easy to understand explanation. Thanks. Only one problem for me. I can't read the dimensions of the walnut pieces. It's too blurry

[@bobbby303]

I just solved my "too blurry to read" problem. I changed my settings to HD and now I can read the dimensions easily. Thank you for sharing your project!

[@ToolMetrix]

Thanks for the feedback! Here you go: Top Plate: 2" x 11.25" x .5" Front/Back: 3.25" x 11.25" x .75" Base pieces (before angled cuts): 2" wide x 2.25" tall x 5.25" long

[@johncunefare6275]

i made this for my nephew for his birthday it came out great and it works i made it out of hard maple

[@ToolMetrix]

Awesome! Thanks for sharing John. Cheers, Paul

[@davidkugler1376]

Slight change to project for Iphone 6s Plus. Offset phone holder placement so that there will be equal amount of sound down each channel. The speaker on the Iphone is on the lower right side.

[@ToolMetrix]

Great to know. Thank you for sharing this information!

[@rod1148]

Great video! Do you have any suggestions on how to cut the block for someone who doesn't have access to a band saw? Could it be safely done with a miter saw? Thank you.

[@ToolMetrix]

It works on a 12” miter saw. Handsaw would work fine as well.

[@rod1148]

@@ToolMetrix Thank you.

[@davidkugler1376]

Taper sled on a tablesaw will work also.

[@ToolMetrix]

Great suggestion thank you 🙏

[@rogeriosouza9349]

okay!!

[@ToolMetrix]

Thanks for your feedback, Rogerio! Cheers, Paul