LumberJocks

Mini Speaker Box

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Project by Mark Burton posted 05-28-2014 04:23 AM 857 views 3 times favorited 3 comments Add to Favorites Watch

This was my second go at building a small battery powered speaker enclosure. I used a 2.8 W amp board and LiPo charger/battery circuit from Adafruit. The two speakers on the front are Dayton 1-7/8” full range drivers that I got from Parts Express for about $5 each. The big baffle on the side is a passive radiator, which is identical to a driver except it has no motor (magnet on the back). The passive radiator concept is new to me and this was the first time I’d ever seen one, but it’s pretty incredible how much the sound improved from having the enclosure sealed with no passive. All in all, I think I’m into this project around $50. I’m going to build another one nearly identical to this one, except use thicker MDF and bracing, add a little more volume to the enclosure, and add a high pass filter to the speakers.





3 comments so far

View Monte Pittman's profile

Monte Pittman

14110 posts in 989 days


#1 posted 05-28-2014 11:20 AM

Welcome to Lumberjocks

very cool build

-- Mother Nature created it, I just assemble it.

View HillbillyShooter's profile

HillbillyShooter

4559 posts in 943 days


#2 posted 05-28-2014 09:19 PM

Looks like a very interesting project—only wish we could hear it.

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

View Mark Burton's profile

Mark Burton

13 posts in 132 days


#3 posted 05-30-2014 01:43 AM

I may take the time to post a video once I finish the final iteration, which will (hopefully) look a lot better. I’m planning on keeping the speakers enclosed with MDF and encasing it with bent ply.

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