Here is my ICE setup in my Vista,
I installed parcel tray at rear and installed Infinity primus co-axial speakers there & I disconnected the rear door speaker connection to get the full effect of Infinity speakers.
In front, I still using stock speakers & tweeters. though, I'm not satisfied with it, I'm using it.
But,I increase two points on rear.so, rear speakers were leading the front speakers. So that I'm getting excellent bass effect & clarity in voice.
When I'm driving alone, I increase to three points on rear, so that I'm getting wonderful bass effect and When I'm doing long trip with parents, I keep FWD points to '0', so that front and rear speakers deliver equal amount of sound. In this case I'm getting normal bass and triple. that makes the journey pleasant.
I may change the front door speakers in future. But, I'm satisfied with the current ICE setup in Vista.
During Our TAI meets, our guys wondered about the quality of BASS produced by stock headunit & speakers
Here is my thread for more information: http://www.theautomotiveindia.com/f...d-vx-1-6-years-40k-kms-odo-16.html#post222777