system for river trip

[txred0810 10+ year member]

I'm wantin to build a homemade boombox for a river trip I'm about to go on. To save money i thought i'd use the bookshelf speakers from an RCA boombox we have at the house. They have one 4 inch woofer, a 4 inch mid, and a lil tweeter. Then I'd buy a new cheap headunit, two more 6.5's, and a cheap 12volt battery. The bookshelf speakers are rated at an impedance of 6 ohms and the 6.5s i'm buying will most likely be 4 ohm speakers. Will wiring these different impedances up to my headunit cause any damage?? Anyone have any suggestions for my boombox?? I was plannin on buildin it out of MDF and covering it with astro-turf. I was also going to make the top of the box have hinges that way it could be opened if anything needed to be worked on or a battery charged. Should be a fun weekend project...

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