It's been quite a journey. Indulge my ego trip please as I tell you a tale of hopelessness, but eventually redemption.
I start with the stock system. What a piece. Terrible tinny sound, no depth, no power. The XM radio I have (skyfi) is wasted on this transistor radio sounding crap. My first upgrade - December 2002 - Subaru/Panasonic under seat subwoofer.
Little change, and I'm not happy.
So I get new speakers - Feb 2003 - Sony xplods in the front, kickers in the rear. I know, tell me they suck. They were on sale, people!
I'm a little happier, but not really. I get a new HU, a blaupunkt MP3000 - June 2003 - so I can directly wire in the SkyFi. Didn't work well. Tinny sound is a little deeper, but now I have interference from the alternator through the skyfi. I know it's odd, but it's true.
So finally, I say fu=K it, I drop some cash for an Alpine 9820 - Feb 2004 - which has XM built in and an infinity basslink. I have a knob that controls the boom in the trunk, a clean looking installation without the skyfi banging into my wife's knee and life is better.
So there you have it. It is possible not to have crappy sound in your Rex, but you have to drop about $500. Thank you and good night.