Boomcase Mimic





Introduction: Boomcase Mimic

DIY Audio

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DIY Audio

Hey everyone.  I just wanted to share my version of the popular Boomcase.  I didn't want to drop over 500 dollars for one so I made my own.  Materials cost me about 50 bucks, and labor was two weeks, mainly waiting for parts to arrive. Majority of the items are reused from a thrift store or I harnessed it from old electronics.   It's still a work in progress since I am still working up a way to add a battery and charging option to it.  Happy Viewing!!!

Step 1: Parts and Tools List

Lepai 2020A+ Amplifier
1960 American Tourista Tiara suitcase
2 used panasonic 4ohm, 3watt, 6 inch speakers
2 used RCA 1.3 ohm, 1.5watt, 5 inch speakers
1 philmore DC panel mount jack
1 3.5mm panel mount jack
1 retractable 3.5mm male to male audio jack

12v-18v drill
1/2" Drill bit
1/4" Drill bit
hand saw or in my case a stainless steel kitchen knife ( router is faster)
solder, soldering iron
electrical tape
Dremel, sanding bits
Plastic masking
3M or similar masking tape



Step 2: Step1

-Figure out what your desired speaker configuration should be.
-Do a mockup in a cardboard box, mine was from a item i just ordered that week.

Step 3: Step2

-Tape up your suitcase, draw your template
-Drill starting holes, and cut into the box, a router would be ideal but I only had a stainless steel kitchen knife from one of those infomercials my mom got me, I never had the need to cut through a frozen turkey or bricks with it.   
-Dremel your holes smooth and to fit the speakers.

Step 4: Step3

-Drill holes to fit amp, dc jack and 3.5mm jack.
-Fit everything and wire it all up, tape it all up, your DC plug and 3.5mm, use the volt meter to find the positive and negative of the DC plug, usually striped wiring or red is positive.
-hot glue everything to case.

-Note: the amp has only 2 outputs at 8 ohms each, if you want to add tweeters you would need crossovers or component speakers that have built in crossovers which mine did. 

Step 5: Step5

-Close it up, plug it up and enjoy

Happy DIYing!........

Step 6: Battery

For now I'm using my portable 10,000 mah Anker battery that I use for charging any 5v usb or 9v/12v dc electronics on the go.  It can power the case for over 10 hours at the volume and amp draw I play it at.  And when not in use i pull the bat out and use it for my cellphones, cames in handy during hurricanes like Sandy. 

Step 7: Speaker Sound Test So Far.....

Here is what it sounds like so far....



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Battery section update.

I know that this instructable is like 12 internet years old but I'm hoping that you see this question. How did you get the battery to run the amp? I purchased the same amp, battery and only one set of speakers (smaller speakers, too). When I hook the battery up to the amp it powers up but it won't power the speakers. Then I turn off the amp and hook it up to the wall outlet and it powers everything just fine. Thank you for the great instructable!

Nevermind. I figured it out.

I'm having the same problem - how did you figure it out?

how did you connect the battery in the end?

How did you figure this issue out? I have having the same problem. Thanks!

Thanks for all your suggestions, I am still finding a charging solution and I'll def look into speaker covers and barrier/ fill separators for it. Love all the ideas!

You know if you're looking for a good charger battery solution, I find the best for my boombox projects is a 3 cell 5000 mah li-ion RC car pack. This will offer plenty of power and adds very little weight unlike the more popular lead acid setup I always see.

Plus these also have a balance jack that can be used for a charger. So my setup uses a 3 cell lithium balance charger and 3 cell lithium battery. What's really nice is the charger automatically charges the battery and can even do so while you're using it. Plus it takes either the supplied adapter or you can make a car adapter so it can charge in your car too.

And the best part is the price. You can get the charger and battery usually for less than $40 online.

Is that 3 seperate batteries or a battery with 3 cells?

Thank you for the battery info. I'm trying to charge and play my boombox without opening my case.