Sir
XS-GTX6940S : Speakers : Xplod™ Speakers / Subwoofer : Sony Middle East & Africa
These speakers are much powerful compare to anything available in the current market, bar the great SPR 69C or the mighty DB691.
If you have any doubt in mind, you can pair them with this AMP.
XM-ZR1252 : Xplod™ Amplifier : In-Car Entertainment : Sony Middle East & Africa
and judge for yourself.
6 x 9 are made for producing power and bass, while components are produced with opposite intention, that is to reproduce the natural sound.
Sony Components are outstanding, provided that they are paired with a good AMP like a Pioneer GM4300F or the Sony ZR602, they have that low gain/volt problem with some Head Units (11xx and 2xxx series Pioneer).
Components are drivers for front sound stage while rear 6 x 9 compliments them, it is quite unusual to arrange 6 x 9 in front, though I have seen them in some Ford F150, and Dodge Ram.
Components enjoy the adaptability that it can be installed anywhere.
If you have the conception that rear 6 x 9 will produce some decent bass for you, I can assure you that even a good 10" SUB can easily overpower 2 pairs of these Pioneer & Alpine.
http://www.pioneer.com.sg/storefront2/aspFn/Product.asp?ProductId=482&CatId=2,27,87
Regards