A4 Cabriolet Mk2
| Active loudspeakers |
| 1 - | Right aerial module -R109- behind rear lid trim |
| 2 - | Left aerial module -R108- behind rear lid trim |
| 3 - | Navigation aerial -R50- behind boot lid trim |
| 4 - | Bass loudspeaker, front left -R21- and bass loudspeaker, front right -R23- in doors (bottom) |
| 5 - | Treble loudspeaker, front left -R20- and treble loudspeaker, front right -R22- in doors (top) |
| 6 - | Mid-range loudspeaker, front left -R103- and mid-range loudspeaker, front right -R104- in dash panel (left and right) |
| 7 - | Loudspeaker, rear left -R4- / loudspeaker, rear right -R5- in side trim (bottom) |
| 8 - | Amplifier -R12- in luggage compartment behind side trim (right-side) |
| 9 - | Internal loudspeaker -R70- in dash panel (front centre) |
| 10 - | Operating electronics control unit for navigation -J402- in the centre console (top) |
| 11 - | CD changer -R41-/iPod holder -R192- in glove box |
| 12 - | Telephone microphone -R38- in front interior light -W1- (from model year 06 on RNS-E high) |
| 13 - | Telephone transmitter and receiver unit -R36- in electronics box beneath front seat (right-side) |
| 14 - | CAN bus (infotainment) |
| 15 - | Navigation/TV tuner -J415- in luggage compartment behind side trim (left-side) |
