DIY Garage Stereo with DML Speakers

I wanted music in my garage when I am cleaning my bike or doing some other work. However, I did not want to spend a lot of money but I also wanted to make sure that it sounded okay.

I was couch surfing one day and came across this YouTube video.

YouTube Video:
YouTube Channel: Tech Ingredients

The video talks about joining audio exciters to extruded polystyrene boards, traditionally used for insulation. I was intrigued.

I purchased a pair of DAEX25TP-4 by Dayton Audio from They look like this:

Dayton Audio DAEX25TP-4

I joined these exciters to FOAMULAR CodeBord Extruded Polystyrene Rigid Insulation which I purchased from Home Depot. I simply purchased a 24″ x 96″ and cut them in half so that I have a pair.

FOAMULAR CodeBord Extruded Polystyrene

Last I bought a cheap Lepy LP-2020A Class-D amplifier.

Lepy LP-2020A

I had an old Airport Express lying around which I can use as my source material by piping Apple Music through it. Here is the end result in my garage.

For less than $100, the sound is loud and good! The low end can be improved with a sub, but I won’t be doing that since this will be rarely used. The next step is to install some shelving and hide the wires so it is more presentable.

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