This was my first attempt at building this speaker BOOM box and it turned out great.  Bellow is the list of parts I used. I also re wired the IR sensor the outside the box so I can use the remote without opening the box. I rewired the FM antenna to the outside also. Every hole I drilled was sealed with 5200 Marine Sealant including two big speaker holes.
I plan to spray paint the speaker covers flat black.

The sound is just amazing, I am very happy with the speaker selection and do recommended to anyone for just about any application.

         - .50 Caliber Ammo Box   $20.00

·        - Polk Audio db401 4’’ 2 way waterproof speakers $60.00

·        - Lepai LP-A68 Digital 2 x 15W Amplifier USB/MP3/SD/FM $25.00

·        - Power Sonic PS-1272 F1 (12 Volts 7.2Amp. Hr.) Battery  $25.00

         - NOCO Genius G750 6V/12V 750mA Amp Smart Battery Charger and Maintainer  $30.00 

SanDisk Cruzer Blade USB 32GB Flash Drive (SDCZ50-032G-A11) $30.00

·        - Polyester Fiberfill Stuffing (polyfill)  $10.00

·        - Polyurethane Acoustical $10.00

·        - 3M 5200 Marine Sealant $10.00

·        - Velcro $5.00

csmith2281 year ago
I see you've mounted the IR sensor outside, but what did you use to mount it in? I can't find anything like that little grommet you used...
Medic55 (author)  csmith2281 year ago
I used an LED case, I cut it and pulled the led out...
MarioU2 Medic5517 days ago
I would love to buy one @medic55. Do you sell them?
csmith228 Medic5512 months ago
excellent. thanks very much.
MarioU217 days ago
Can i buy one of this from you? I like it.
Tanknician1 year ago

My brother loved his birthday present!

Medic55 (author)  Tanknician1 year ago

Great to hear. What kind of amp did you go with?

I went with the same eBay special, $25 (sd, usb, fm and aux). Worked really well but I need to spend a little more time on the speaker baffling, as there's a fair bit of interference at higher volume levels. Otherwise it worked out really well. (The photo was taken before I rerouted the aerial to the top of the box.)
Medic55 (author)  Tanknician1 year ago

I just ordered couple more amps, will build and sell them at $300.00 a piece :) 2 orders are in....

zcheshire1 year ago

Are you getting much vibration kinda like trunk rattle on it at high volumes.

Medic55 (author)  zcheshire1 year ago

Not at all. Ammo Can is pretty sturdy.

How do you recommend charging it?

Medic55 (author)  MrCantThinkOfAName1 year ago
I use NOCO Genius G750 6V/12V 750mA Amp Smart Battery Charger and Maintainer. I bought it originally to charge my Jet Ski battery, but it will charge just about any 6V-12V battery and it has worked well so far.

Cool project.

How long does the battery last?
Medic55 (author)  slagathor1391 year ago
It depends on how loud its played. 5Amp battery has lasted me about 6-7 hours...
showard261 year ago
There water proof speakers?
Medic55 (author)  showard261 year ago
Yes, they are marine speakers.
showard261 year ago
Still cool tho
bhalliday1 year ago

im sorry ahead of time if i missed it but is this ammo box water proof?

Medic55 (author)  bhalliday1 year ago

Yes, it went swimming already and no leaks.