Ive looked into upgrading the sound in my VE. I got a proposal together. and its kind of pretty simple.
The best way to achieve good overall quality is to get a Car Stereo High to Low Level Converter, which runs your speaker wires to RCA connectors. These should then go into a 4 channel amp, which runs all of your in cabin speakers. You then run a 2 channel amp to run the two subs in the parcel shelf.
So you replace the fronts (door speakers and dash tweeters) with a good split front speaker with crossovers. (holden consider these to be separate speakers, cheeky boys). So the two front speakers are holden speak for 4.
With the rear door speakers, you get similar speakers to the front, but the tweeter is acutally built into the main speaker. So once again, holden classify these as separate speakers. So there are 4 more speakers.
(we are up to 8 now...)
As CSP says, you just simply rip out the front centre. Its useless and actually would cause you grief as a 4 channel amp wouldnt power it.
(So thats 9 speakers now)
With your two rear parcel shelf subs, you can get 2 x 6 inch subs running off another 2 channel amp. You rip out the factory amp, it would be useless for quality sound. These happen to actually be 2 separate speakers lol.
So theres your 11 speakers, upgraded. Still using the factory head unit. Not taking up any additional boot space. And not being noticable from the outside of the car, as you are installing speakers in the factory covers etc.
And as far as good speakers go, Focal make some good ones. I think they are Dutch and made there (as opposed to dutch owned and chinese made). I've got european home theatre speakers and they are awesome. The focal polyglass speakers would be a great fit both physically and sound wise in the VE. They do good small shelf subs too.
