I am restoring a classic 1976 Mercedes 450SEL. My first car was also a Mercedes back in the 1970's. At that time a German loudspeaker, the Visonik David, was imported here in the US. This speaker towered above all automotive speakers, and I had them installed. Incredible. In fact, the Visonik David brought the subwoofer into being for home audiofiles (David and "Goliath," the sub designed by the legendary Ken Kreisel... flash forward 40 years, and I actually found the only pair of Visonik Davids in the U.S. - but in 30 years, the David had truly been retooled to work as a satellite which really needs a subwoofer. Enter the Sound Ordnance B-8PT, some custom work in losing the medicine cabinet in exchange for the sub port, and lo and behold, I have once again, arguably, the best sounding car on the road. The weaknesses displayed by all "car speakers" are not there, only the recording studio quality sound I prefer. Visonik Davids are commonly used in mobile recording studios in Europe. Today, I spent four hours in a 2013 Camaro with a top flight Bose audio system, and the difference to my Sound Ordnance enriched Visonik David Mercedes is so striking, our two cars are in two widely separated ball parks. World Class, World Beating sound or my vehicle with Sound Ordnance and the Davids, and Good But Far From Great for the new car and Bose. A Sound Ordnance sub would help the Camaro a LOT.
Pros: Sound Ordnance delivers the missing octaves and presence required by music of every discipline, with a caveat: for those needing the muddy, pointless, throbbing, detail free bass of rap (branded today as Hip Hop except to the performers of whom I have photographed many) this is not your sub, as it is MUSICAL. In a vehicle, only pressure differential bass can be heard. Put a meter inside your thumping car and be amazed at how little bass there actually is.
Cons: There is enough bass to cause a maddening quest to figure out what is vibrating and making noise in an old car. Once cured, bliss returns.