Re: alpine type-x speakers.
I have them as do quite a few other members on this board. They are outstanding speakers that will provide clarity above all else.
Just make sure you take your time and install them properly... generous amounts of sound deadening, position the tweeters for the best imaging to your ears before you mount them, trying the different jumper settings in the crossover if you're running them passive, just to name a few.
2010 Kia Forte SX
2009 Kia Borrego EX 4x4
Setting Amp Gains:
Bought from: jacobcopeland87, 95bat, alxmlr789, na_rsx