http://www.mp3-box.org/mp3-cd-players-boombox/

How can I convert car audio speakers to use in house with ac power ?
Here is my goal, ( please don’t just say buy a radio, the boomboxes made today sound like crap ) I work in the construction field, I want to build some sort of boombox myself to take with me on job sites. I could probably rig up some logitech computer speakers but what I would like to do is rig up like two good quality 6×9′s , option 1: just the speakers and amp so I can plug my mp3 player into it. option 2: speakers, amp, and car cd receiver. Now the problem to figure out, How can I do this , How do I convert the power correctly ? I have read not just any power converter will work. Example, …. 2 6×9 speakers, 100 watt amp, the car receiver, How can I know or measure what kind of power converter I would need ?? Any ideas please, thanks , ……. even if I can just rig up two good sounding 6×9′s to plug my mp3 player into would rock also. Last question, any ideas on how volume control would work with this ?
I THINK U CANT MAYBE U CAN ASK THE PERSON FROM WHOM U GOT IT INSTALLED !!!
Jwin mp3 CD Player, Memorex Boombox, Coby Portable CD Player