hi, its the electronically illeterate martindev again. i have one more question. i want to hook up my speakers (creative sbs vivid 80) hook them up to my bike, and roll around my hood' witth my music blasting. (and hopefully not get shot. my neigborhood is crummy) they are 12 volt dc. what do i need to get the speakers turned on without an outlet?and this might be a stupid question, but are batterys even dc? can i hook up a series of batteries, to make 12 volts?