these speakers are 3 years old, and have only been used for one year i took them out of my festiva when i sold it 2 years ago. the model is the fx-4. i dont know a thing about speakers except that i liked these when i did use them. i dunno about applications either, if ya want that info, you're gonna hve to find it. i can tell you that they fit on a ford festiva though. ill consider any reasonable offers. thanks for looking!