Not true. Why don't they put speakers behind you at a concert?
You mean way back behind you where the drummer sits? Next to the Bassist?
Since subs are picking up about 80% of the drum kit and 90% of the BASS guitar...and they are way the hell in the back... and all sounds the in a concert are coming from in FRONT of you.. you cant really use this as an example at all.
I would spend all the cash you have on one NICE set of comps for the front. Bridge or bi-amp your 4ch to them and drive happy.
There is no wall that stops the rear passengers from hearing what you have up front.
(im not gonna get into components vs coaxial with you because a set of Focal/Morel/Rainbow ENTRY LEVEL coaxials.. will SMOKE those JL or those Infinity Components)
While i agree if you can only afford 1 nice set of speakers they SHOULD be in the front door.. but thats NOT the only set you should worry about by any means.. a concert hall is designed to bend and alter sound in a way that surrounds you in noise and provides an immersed feeling..
So in a car.. with 2 members of the band sitting in your trunk.. to provide ideal sound you have to sprinkle the rest of the band all over the place..
So yea.. front loading is cool.. and is the easiest way to gain imaging..
8 inch paper cone loudspeakers, kevlar 6s titanium 3s and silk tweeters in each front side of the truck.. would be heaven..
But since you DONT have that.. you have to drag your sound floor and create a collision point where sound meets ideally.. and since sound waves all move at different speeds and lengths.. the easiest way for a layman to create the biggest sweetspot possible.. is to give yourself room for error.. and the easiest way to do this.. is more quality sound spots.
Having an amazing front stage then a massive gap behind you till you hit the ENTIRE REST OF THE MUSIC SPECTRUM is NOT imaging..
I dont buy rear speakers for my rear passengers.. i buy them to create a bigger , cleaner, more quality sound floor for myself.
There is a reason highend cars with stock option audio upgrades have 11/13 hell 15 speaker systems..
Off topic....
I have some high end Focals in the Vette doors and two 8" JL subs in the rear factory locations and love the sound. This setup should sound similar, but with a lot more base.
High end Focals.. or .. Focals (being a high end brand)
And no.. comparatively.. a setup with a mix max of JL highs (uhgg) and Infintiys in a big ass yukon is NOT going to sound ANYTHING like a Focal setup in the tiny interior of your corvette.
Although i agree... the rear doors are for more important than the D pillars.