This is a write up on how to make a LOUD portable radio for camping/houseboating etc...
My friend showed this to me last year and I borrowed his for all our camping trips and it worked out great so I figured I'd build my own this year. I wanted to make it as cheap as possible so I'm sure you could buy a better amp and better speakers and it would sound even better but price was the biggest factor for me so I went with cheap speakers and a cheap amp. If your wondering if this is better than the Dewalt portable radio, I own both and I can tell you its 10x louder, sounds better and lasts much longer. I'll include a list of parts that I used with links also. Here we go:
Old metal 5 Gallon gas can
6x9 car speakers(naxa nx-768) $25
If you really want great sound you can go with these:
Amp: Boss 200w CE202 $38
Battery: 12v 18ah UB12180 $43
Fuse holder and fuses: $8
RCA to 3.5mm cable $10
Deltran Battery Tender Jr. $28
Any switch from radio shack $4
Can of spray on bedliner
Total cost is around $150. I can't tell you how long the battery will last since I haven't ran it down yet but I will say that my buddy used a regular ATV battery(which isn't made to last very long) in his and it ran for about 10 hrs before dying so I'm guessing and 18ah battery will last a lot longer. Also after complete, the can weights about 30 lbs. We drilled a hole in the middle of the cap for the battery tender cord and 3.5mm jack to stick out.
Anyway, I hope I explained this well enough. I'll try to check this thread every once in a while to answer questions but if you need to contact me just email at email@example.com
Have a good summer!!