Audi A4 allroad Rear Door Panel Speaker Size
The Audi A4 allroad rear door panel accommodates 1 inch speaker size and 6.5 inch speakers across the model range. Compatible types for these locations include tweeter and midbass / full-range units. These specifications cover the 2017 to 2018 model years.
| Year | Type | Size (inch) |
|---|---|---|
| 2018 | Tweeter | 1 |
| 2018 | Midbass / Full-Range | 6.5 |
| 2017 | Tweeter | 1 |
| 2017 | Midbass / Full-Range | 6.5 |
Speaker Types
| Type | Description |
|---|---|
| Tweeter | A small driver built for high frequencies, typically from about 2,000 Hz to 20,000 Hz. It adds treble detail and clarity and is usually mounted near ear level or aimed at the listener. |
| Midbass | A driver tuned for upper bass and lower midrange, roughly from 80 Hz to 500 Hz. It has longer cone travel than a full-range unit, which supports stronger bass in doors and panels. |
| Full-Range | A single driver that reproduces bass through treble without a separate crossover network. It is the simplest replacement option and is common in factory audio systems. |
Additional Notes
- The rear door panel location in the Audi A4 allroad accommodates 2 distinct speaker sizes simultaneously, indicating a multi-driver configuration within the same mounting area.
- Door panel installations are typically flush-mounted within a recessed cavity in the door card, with depth clearance and baffle dimensions determined by the door's internal structure and vapor barrier placement.
- The 6.5 inch driver in the rear door panel operates within the midbass or full-range role, covering the lower-mid frequencies roughly between 80 Hz and 500 Hz, where kick, bass guitar, and lower vocal fundamentals are reproduced.
- A 6.5 inch cone diameter provides sufficient surface area for meaningful air displacement at lower frequencies, which is acoustically relevant in a rear door location where the driver fires toward the cabin floor or seat base rather than directly at ear level.
- The 1 inch driver in the Audi A4 allroad rear door panel is designated as a tweeter, handling high-frequency content typically above 2,000 Hz, including upper vocal harmonics, cymbals, and transient detail.
- A 1 inch tweeter dome or cone has low mass and a small radiating surface, which allows rapid pistonic movement suited to reproducing short-wavelength, high-frequency signals at the rear door panel position.
- Rear door panel tweeter placement positions high-frequency reproduction at a lower height than the front stage, which affects the perceived spatial imaging and stereo width within the cabin.
- The 6.5 inch full-range designation means a single driver of that size covers the entire audible spectrum in configurations where no crossover network or separate tweeter is used, while the midbass designation applies when the driver operates within a crossed network alongside the 1 inch tweeter.
- Both the 1 inch and 6.5 inch sizes appear in both the 2017 and 2018 model years, indicating a consistent rear door panel speaker configuration across those 2 years of the A4 allroad.
- Door panel mounting subjects speakers to road vibration transmitted through the door skin and frame, making the mechanical properties of the driver basket and surround material relevant to long-term performance in the rear door location.