There you go A4 2003 non-Bose Saloon
General overview of "chorus II", "concert II" and "symphony II" radio systems -Saloon
1. CD changer
o Optional
o In the glove compartment
2. Centre loudspeaker
o In dash panel
3. Radio
o In centre console
4. Amplifier for rear loudspeakers
o In rear right of luggage compartment under side trim
5. Bass loudspeaker (subwoofer)
o Below rear shelf
6. Aerial amplifier or control unit for aerial selection
o Aerial amplifier for "chorus II" radio
o Control unit for aerial selection for "concert II" and "symphony II" radios
o Underneath the roof frame trim
7. Rear treble loudspeaker
o In upper rear door trim
8. Rear bass/mid-range loudspeaker
o In lower rear door trim
9. Front treble loudspeaker
o In front upper door trim
10. Front bass/mid-range loudspeaker
o In front lower door trim