As suggested ^, the space is the major reason they are used in cars. This, however, is not the reason that some were used in high end speakers with very large cabinets.i always thought that oval speakers were a compromise on design to enable people to install larger speakers into rear parcel shelves.
i was under the impression the top reccomendations were that you would always get better sound from a round speaker of the same size.
Possilby there is a demand for just the bigger item so it is made cheap and horrible and possibly enhances the car stereo store myth that a speaker has to be round to perform well.
nb: ive got 6 x 9 s and 6 1/2in circ in my torry, I love them both. I used to run transmission line oval speakers in my home system which were good, now I run ribbons with a sub and I love them too.
Edited by devilsadvocate, 08 November 2006 - 02:42 PM.