As a side note my wife was in the car a couple times this weekend and complained up and down how there is not "low sound" up front as if a car behind me was playing the bass notes, not my car. You need to put the speaker up front to here it, LOL. Shes critical and has a good ear. Also complained that the sound doesn't surround or envelope you, as I really dont have rear speakers running (off deck power only) shes right. So this morning I put in my time delays using measurements (inches converted to ms) and she listened to it again "ok that better, not great, but better". Incredible how timing can make you think a speaker is somewhere else. HA!!