Sunny03

Old topic I know but I have done this mod with excellent results.

*) I used the Jaycar Response Precision 4" co-axial speakers like Jinster, except now in 2009 the crossover is integrated so no big mess of wires like on those pictures. Speakers available online from Jaycar.com.au, Item number CS-2370. See here: http://www.jaycar.com.au/productView.asp?I...mp;form=KEYWORD

*) The speakers sit really very nice and tight thanks to the remnants of those metal speaker frame tabs being pressed by the modified plastic bracket -- WARNING if you file the metal tabs down too much, then the speaker falls into the hole in the top/big part of the grill. I accidentally did this on one speaker but could luckily bend and stretch the tabs back to make it fit tight again. Even when I had the tabs too short it was just a little loose, still not at all "rattly"

*) Highly recommend getting a thin 90-degree bitholder for the Torx screws close to the windscreen if you don't have one. I managed to do it all just using a pair of pliers to hold the bit with which I turned the screws, but it was a pain, and had a high risk of scratching the dash of windscreen.

*) I used polyester fill from inside a cheap $5 Kmart pillow as a baffle in the small speaker spaces in the dash. Presumably this improves bass of the 4" speakers.

*) The new speakers are 4 OHM while the stock ones are 8 OHM (now HAES not Nokia for a 2004 Boxster) - this makes my CDR-23 head unit run noticeably warmer, I can tell this when I eject CDs they are hot. I wonder if the CDR-23 can handle the 4 Ohm speakers long term?