Im putting in 2 infinity kappa 12's with a jbl 600.1 and was gonna do a new alpine mp3 head unit was wondering about the speakers in doors if its cost economical to swap them out or if stock were pretty good
Since you are going to the expense of replacing the factory sub, amp, and headunit, go ahead and replace the front speakers with a good aftermarket component set, which include the midbass, tweeter, and passive crossovers, and you could go with a good coaxials in the rear. Since you have infinity subs, I would replace the front speakers with infinity kappa components, and the rears with infiniry coaxials. Those twelves are gonna pound running off of that JBL, so I would plan on running the front and rear speakers off the headunit, but save and purchase a jbl four channel amp (25/50 watts x 4) later on down the road. With no speakers running off the Headunit, you could adjust the system, with the amps gains, to not distort when ran hard.
where would I go to find out the sizes of the components and coaxials I should get, and should I purchase them online is there an affordable site I didnt find many that carry infinity (I initially purchased infinity cause I have a set of studio monitors in the house from infinity and I love the sound)
Yeah, they are what I used. Hit a deer last night, vehicle is toast. Try crutchfield, but I usually buy from an independant Audio shop, that deals with me, knowing that I will continue to purchase from them in the future.
Also, look in the scratch and dent section, sometimes can find closeouts on last years models that are not "scratched and dented", they just want to move them. Oh Yeah, buy a set "Bass blockers" for the rear coaxials, with the two twelves, you will need them for rear fill only, and will not need them to reproduce the lower frequencies.