ran my thoughts by oemaudio+, this was by design that the front stage is louder.
Sat in the 4runner for a while earlier, and it does sound like it all phases together just fine.
Just one of those things i noticed when i had all the doors open and noticed how the 6x9s sounded too loud.
How do you have your EQ set in the head unit? Daniel told me they set the equalization assuming "net 0" on treble, bass, and mid range. With the factory 6x9's, I bump the bass up a couple notches and get a good, solid thumb without it being "boomy" or vibrating ... I wonder if I'll have to knock that down with the new 6x9's installed.