Alpine SPS-610. 6.5". A few things to note, these are 2 way speakers, not single cone. Obviously an improvement to original speakers, but they are bright. My understanding is there is built in crossover in the head unit or somewhere else, so I am not sure if that effects only the door tweeters (they don't get bass), or the lower speakers also, ie the lower speakers are only being sent the mid to low ranges. Either way these have a built in crossover if being sent high to low.