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This item sold on October 6, 2012.

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This is a hand built system that is completely portable and will provide 40w (more sound than I can cope with) of audio power for upwards of eight hours (8 is a worst case scenario and if you want bigger capacity I can arrange an upgrade)

The creation of this system came about when I wanted a speaker system that would not just be portable but would sound great, be loud, be bulletproof (well maybe not literally) but most of all would last the whole party.
After a good amount of work and some extensive research this is what I was able to come up with.

-Strong 30.Cal ammo can to provide a sturdy case (10 1/2" x 4" x 7" or 25cm x 8cm x 16cm)
-Class T 40w stereo amplifier for long play time and clean sound
-9.8Ah Li-ion battery to reduce weight and increase play time
-Two 20w coaxial MAC audio speakers for great sound
-USB charger to keep your audio device up and running
-External audio and power plugs for added convenience (comes with the power adapter and Audio cable)
-Illuminated switches add a nice effect and allow you to quickly see if the amp or USB is turned on
-Camo Carry handle tape to make it more comfortable to hold
-Lightweight design (just 6.5lb or 3Kg)

The case itself is an army surplus ammo can that has seen active duty and is constructed of 1.5mm steel plate which is doubled at the top and bottom to make this a super sturdy piece of kit. When they are made these are fully waterproof and even with the speakers in they still can stand up to a good splashing or a bit of drizzle (waterproof version coming soon!).

By utilizing a class T amplifier this system is able to extend play time due to the 80% efficiency rating compared to the 50% rating of a standard amplifier. Not only are these amplifiers efficient they are also of superb audio quality. Inside the case are Bass Treble and Volume Knobs to allow you to control your audio experience to perfection (volume is normally just changed on the input device).

While most people building custom boomboxes use cheap but heavy Lead acid batteries we use only Lithium Ion batteries which means that rather than adding 1.5Kg to the weight the battery in these systems adds just 0.5Kg whilst allowing you to still have the long play time you would expect (how good is that).

The speakers used are high quality 10cm MAC audio speakers that use a coaxial design to provide both a woofer and a tweeter (10cm, 3cm respectively). This makes them far more versatile and able to produce a frequency range far greater than that of a standard speaker.

There is no need to open the case with this system as it comes supplied with an external audio jack that will plug into almost all music players, (iPod, iPhone, Tablets, computers, other MP3 players) basically anything you can plug a pair of headphones into. Furthermore charging is a breeze as you simply plug the power lead into the external socket and it will charge away even while it plays music or powers the USB.

Well I hope you like the look of my Boombox and if you do please feel free to get in touch with me on my Etsy page (why not get in touch even if you don't like it!)
I always love to hear other peoples ideas and if you are interested in having one of these custom made for you (bigger speakers, battery sub-woofer) then again please don't hesitate to drop me a message.
Hope to hear from you and thanks for looking!


Available at MIRedmayne [!at] gmail.com

30.Cal ammo can Boombox. Water resistant rechargeable speaker system


  • Handmade item
  • Materials: steel, foam, iron, wire, rubber, pcb, tape, cotton
  • Ships from United Kingdom to select countries.
  • Favorited by: 62 people