Before you buy new speakers read this...

[SWEETish]

I just bought replacement rear deck speakers for my Volvo 850T because it had seemed like they weren't working at all. When I took the old ones out, I discovered that there was nothing really wrong with them; all that had happened was the magnet underneath the tweeter had come loose. So, all I did was glue it back on, re-sauder the wires to the contacts, and they work great! So before you go searching for those hard-to-find speakers, just take them apart and fix them yourself! Most likely this will be the problem with them. At least I can get some of my money back....