I dont know much about car audio and two of the speakers in my 05 xterra are blown and I'm planning on replacing all 4 door speakers now. The previous owner put in a pioneer head unit and there are two amps, one hooked up to the speakers and the other was used for a sub he had. I went to a car audio place near me and the guy said told me about getting a pair of entry level pioneer speakers or a pair of kickers which are more expensive. I'd rather spend some more money for a better sound system.
Anybody recommend any other good speakers?