hi All,
I've noticed a number of threads about how to upgrade / improve / change the mac (clarion) that comes standard in the top spec Libertys so I thought I'd offer up some knowledge (as this is my line of work)
Firstly, like all manufacturers, the stock system is built to a price. mac's are Clarions, simple (a Porsche badge on a 924 does not a Porsche make, it's still a VW) so I hope I don't offend anyone who thinks this system is good, imo it's not.
Just because there's 4 speakers in each front door doesn't mean you have to try and find a 3 way system etc. a decent 2 way split from a good manufacturer will crap on the stock speakers from a substantial height, quality over quantity will rule every time.
they will also render the centre speaker irrelevant, it's only there due to poor imaging (ability to decipher where the actual instruments etc are) and staging (height)
If you want stock headunit but not the poor audio quality and want to improve everything, there's a product from Alpine called PXE-H650. It has 30v line in (yes 30, not 3) so can be added post factory amp.It gives you front / rear and sub pre-out with sub level control via remote and an aux input.It will analyze the poor freq response of the mac and use a 175 band "ant-eq" to flatten it. It will then analyze the interior through an external mic (called Audyssey XTpro - the inventers of THX) and auto-eq with another 175 band eq, phase correct and time align all the speakers - automatically off a lap-top with software package.
the system will sound nothing like the factory mac but retain your dash but will hit you about $800.
there's much more basic products from Rockford and JL as well but they dont offer audyssey, ant-eq, 175 band etc etc, they are more like advanced line level converters with an eq but they will enable an upgrade of amp and speakers for a hunge or so less.
Hope this helps somebody, and no, I do not have a retail store so I'm not trying to flog something.
cheers