High-frequency sounds such as cymbals, snare drums, and some voices are directional. So you need the speakers that reproduce those sounds pointing towards your ears or you won’t hear them well, especially in a Jeep. As an optional upgrade, we ordered these tweeter pods that bolt in to put the high-range speakers on the dash pointed at our ears. Unfortunately they didn’t fit in our ’01 with our ’cage. But for testing and fitment purposes we put them in our ’06 and they installed easily and sound great.