After market radios

Hey does a car speaker "care" if it's hooked to a 6 volt, 12 volts, negative ground or positive ground radio??
 
Speaker do not work off of car voltage or polarity. The radio itself provides the power to the speakers. When an amplifier drives a speaker, it is driving the speaker terminals with AC voltage. If the volume is at its minimum position, the speaker doesn't move. If the driving voltage is low, the speaker moves a little. As the voltage increases (when you turn up the volume), the cone moves further from it's point of rest.
 
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