Audi 5000 Rear Deck Lid Speaker Size

Additional Notes

• The rear deck lid is a horizontal surface positioned at the rearmost interior section of the cabin, between the rear seat and the back glass, a placement that projects sound forward into the passenger compartment from behind.
• A deck lid mounting position creates an upward-facing speaker orientation, which means the driver and passengers receive reflected or diffused sound rather than direct on-axis output.
• The Audi 5000 rear deck lid accommodates 6.5 inch speakers across model years 1982 through 1988, and also lists 6.5 inch as a fitment for 1980 and 1981 alongside a second size option.
• A 6.5 inch driver occupies a mid-sized cone area, producing enough surface displacement to reproduce bass frequencies in the upper bass range while also handling midrange frequencies with reasonable efficiency in an automotive enclosure.
• In a rear deck lid position, a 6.5 inch midbass driver concentrates output in the roughly 60 Hz to 500 Hz band, reinforcing the lower portion of the sonic spectrum that carries warmth and body in music reproduction.
• A 6.5 inch full-range driver extends coverage beyond midbass into upper midrange and lower treble frequencies, functioning across a broader portion of the audible spectrum without requiring a dedicated tweeter at the same location.
• The 6x9 inch size is listed for the Audi 5000 rear deck lid in model years 1978, 1979, 1980, and 1981, with compatibility restricted to full-range type only in all four entries.
• The 6x9 inch oval format provides a larger cone area than a 6.5 inch round driver, which increases low-frequency displacement and output potential, particularly relevant in a sealed or semi-open deck lid cavity where excursion and surface area contribute to bass reproduction.
• The oval geometry of a 6x9 inch driver allows the speaker to fit within a space that may not accommodate a larger round driver, making the format common in horizontal deck installations where both length and width constraints apply.
• Full-range is the only compatible type listed for the 6x9 inch size in the Audi 5000 rear deck lid, meaning the driver must handle the entire reproduced frequency range at that location without the midbass-only operational mode available to the 6.5 inch fitment.
• A full-range speaker typically incorporates a cone for low and mid frequencies combined with a small integrated whizzer cone or dust cap designed to extend high-frequency response, allowing a single driver to reproduce a wide audible bandwidth.
• The 1980 and 1981 model years are the only entries in the specification where both the 6x9 inch and 6.5 inch sizes are simultaneously listed for the rear deck lid, indicating the mounting location accepted either footprint in those years.