I upgraded the stereo in the 2000 S and thought I'd share. I was inspired by this:
Porsche Boxster JL Audio Stealthbox Style Subwoofer Upgrade - 6speedonline.com Forums
but found a NorCal shop that carried the same equipment. Here is what I put in:
Head Unit: Alpine CDE-HD149BT ($300)
Speakers: Focal 165 KRX2 - 2 way ($1200)
Amp: JL Audio XD500/3 ($430)
Sub: Coming soon ($700)
Installer: AMS Car Stereo (
AMS Car Stereo | Home)
After consulting with the installer, who has done quite a few boxsters, he said that a 2-way speaker was more coherent in the boxster and was much easier to get great sound out of than a 3-way. I did choose an amp that allowed for the future addition of a sub, and had them pre-wire it. It doesn't REALLY need the sub, but I'll likely add that as my Christmas present.
Amp Board:
Door Speakers:
Head Unit (note USB AUX connector):
Final amp and crossover Install: