I bought the jvc kw350 bt head unit. I was thinking about replacing the factory Bose speakers with aftermarket speakers but am not sure how to go about doing this. Having the Bose amp I'm not sure if that effects what ohm my new speakers should be. I think the Bose factory speakers are 2 ohm and below. If I get 4 ohm speakers they won't be very loud. Does this only matter if I was putting in new speakers with the factory head unit? I guess what I'm asking is with the jvc head unit and the Bose factory amp, what aftermarket speakers should I get? As far as ohm goes... I have a 1500 watt amp and subs and they drown out the Bose speakers. I'm not trying to add an amp for mids n highs, just wanna upgrade the door speakers