Speaker Rings 

Audi A3¹ (8L) 06/1996 - 6/2003
2/3 doors
Audi A4² B5 (8D) 11/1994 -> 10/2000
Audi A4 Avant³ B5 (8D) 01/1996 -> 06/2001
Audi TT¹ (8N) 06/1998 -> 04/2000

installation point: 1 = rear side shelf Fond, 2 = rear shelf, 3 = door rear
speaker: 165 mm
panel cut out: 141 mm
outer diameter: 168 mm
ring height: 24,50 mm