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

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...
I used an LED case, I cut it and pulled the led out...
I would love to buy one @medic55. Do you sell them?
excellent. thanks very much.
Can i buy one of this from you? I like it.
<p>My brother loved his birthday present!</p>
<p>Great to hear. What kind of amp did you go with? </p>
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.)
<p>I just ordered couple more amps, will build and sell them at $300.00 a piece :) 2 orders are in.... </p>
<p>Are you getting much vibration kinda like trunk rattle on it at high volumes.</p>
<p>Not at all. Ammo Can is pretty sturdy. </p>
<p>How do you recommend charging it? </p>
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. <br><br>http://www.amazon.com/NOCO-G750-Battery-Charger-Maintainer/dp/B004LX3AS6/ref=sr_1_16?ie=UTF8&amp;qid=1399294210&amp;sr=8-16&amp;keywords=12v+battery+charger
Cool project.<br><br>How long does the battery last?
It depends on how loud its played. 5Amp battery has lasted me about 6-7 hours...
There water proof speakers?
Yes, they are marine speakers.
Still cool tho
<p>im sorry ahead of time if i missed it but is this ammo box water proof?</p>
<p>Yes, it went swimming already and no leaks.</p>