I'm buying triaxial 6x9's for the stock rear location and coaxial 4x6's for the stock front. Will having triaxial speakers in the
rear affect my soundstage or imaging, would it better if i used coaxials or does it not make a difference so long as the front overpowers the rear?

After I buy those i'm getting q logic kick panels for mids and tweeters in the front, will the 4x6's in the stock front location affect my soundstage or imaging?

I'm fairly new to car audio, I guess i'm just asking what would be best to do, thanks.

 

Having all those highs in the rear will move your soundstage rearward, especially since you won't get much out of those 4x6's. The Q-logic kick panels are ok, the tweeters are aimed ok to give a pretty good stage. i'm runnin boston acoustic proseries 3 way components in the front, and pro 6.5 two ways in the rear, i had to attenuate the tweeters all the way down to move the stage back to the front, as the 2 ways have less impedance. i also made custom kick panels to aim the tweeters in the front, with the 6's in the doors. sounds like someone is standing on my dashboard singing.

 

I have Tri's in the back .. it does sound good.. I also put the co's in the front.. too.. over all.. it did move it rearward a bit.. but I don't think it made that big of a difference..

 

yeah, i'm usually pretty picky about soundstage placement, i used
to compete when i worked at the stereo shop. usually i wouldn't even run tweeters in the back as rear speakers are just usually used for rear fill.

 

thanks for the answers

 

How many drivers you have makes no difference for the most part, especially when it comes to these "tri-axial" 6x9s. 99% of those use a mini-tweeter with such a low sensitivity that it offers virtually no contribution to what you're hearing. Most of them are there for looks and not much else.

In general, having too much sound coming from the back will ruin the image and stage up front. The more high frequency content you have in back, the worse it is. Having a speaker that's any bit different from the front speaker will hurt imaging and staging too, because the rear speakers will have a different tonal quality, which will cause you to localize different sounds differently. The result is an unstable image that moves around.

The best-case scenario in most situations is to have 4 identical speakers, and to use a low pass filter on the rear speakers, to remove all high frequency content. Some people that use coax speakers will cut the tweeter wires so that only the mids get through. Likewise, those who use components up front choose to use just the midrange for rear fill.

No matter what solution you choose, having non-identical speakers will put you at a disadvantage. The best way to combat this is to make sure you filter high frequencies, and to attenuate the sound so that the majority of the sound comes from the fronts.