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what size speakers does a 2007 kia optima have
The 2012 Kia Optima has a 2.4 L base engine size.
The 2012 Kia Optima has an inline 4 engine.
they are 5x7 front and rear. try infinity kappa speakers in this size
6x9 in the front doors, 5.25" in the rear doors. The stock infinity speakers are problematic.
4 six inch infinity speakers
The size of the door speakers are 5.25. I have just moments ago replaced mine. This is the dimension of the Concorde is the infinity system.
The 2013 Kia Optima has a 2.4 L base engine size.
Infinity manufactures the Primus line of speakers, which range from small bookend-size to larger freestanding speakers. The Primus line of speakers incorporates Infinity's Metal Matrix driver diaphragms. Infinity claims that the Metal Matrix driver diaphragms used in the Primus line speakers reduce distortion and cone breakup, and improve transient response, resolution, and smoothness of sound. You can read a more detailed review of Primus speakers at: http://www.stereophile.com/budgetcomponents/404infinity/
6 inch
The door speakers are 6" and there may or may not be a 6-8" sub somewhere hidden in the back.....
The 2002 Kia Optima has a 2.4 L base engine size.