Audi 90 Dashboard Speaker Size
The Audi 90 dashboard accommodates a 4 inch speaker size across all listed model years. Midrange units are the compatible speaker type for the dashboard location. These specifications cover the years 1988 to 1995.
| Year | Type | Size (inch) |
|---|---|---|
| 1995 | Midrange | 4 |
| 1994 | Midrange | 4 |
| 1993 | Midrange | 4 |
| 1991 | Midrange | 4 |
| 1990 | Midrange | 4 |
| 1989 | Midrange | 4 |
| 1988 | Midrange | 4 |
Speaker Types
| Type | Description |
|---|---|
| Midrange | A driver for the middle of the audible range, typically from about 300 Hz to 5,000 Hz, where vocals and most instruments sit. It is often paired with a tweeter and a woofer. |
Additional Notes
- The dashboard location in the Audi 90 positions speakers at the front of the cabin, typically along the top of the instrument panel, placing the drivers close to the windshield and near ear level for front-seat occupants.
- Dashboard speaker cavities are generally shallow and spatially constrained, which limits the depth of driver that can be installed without interference from the panel structure beneath.
- The 4-inch diameter specified across all listed model years for the Audi 90 dashboard reflects a compact footprint suited to the limited mounting depth and surface area typical of instrument panel installations.
- A 4-inch driver reproduces frequencies roughly in the range of 200 Hz to 5,000 Hz, making the cone diameter appropriate for handling midrange vocal and instrumental content without requiring the enclosure volume that larger woofers demand.
- The dashboard position places the speaker baffle on a horizontal or angled plane facing upward toward the windshield, which affects sound reflection and dispersion into the cabin differently than door-mounted or pillar-mounted locations.
- Midrange is a speaker type engineered specifically to handle frequencies in the middle portion of the audible spectrum, roughly 300 Hz to 5,000 Hz, where speech intelligibility and the fundamental tones of most instruments are concentrated.
- Because midrange drivers are not intended to reproduce deep bass or high-frequency treble content, the Audi 90 dashboard location is acoustically dedicated to the middle frequency band rather than full-range reproduction.
- Midrange drivers typically use a relatively stiff cone and a narrow surround to maintain accuracy and low distortion across the frequencies the type is designed to handle, rather than the excursion-oriented design of a woofer.
- The Audi 90 dashboard's 4-inch midrange specification means the driver diameter and transducer type are matched at that location, as a 4-inch cone provides adequate radiating surface for midrange output without the mass penalties that would reduce high-frequency response.
- The proximity of the dashboard speaker position to the front windshield glass can influence acoustic output through early reflections, a factor relevant to the directional behavior of a midrange driver, which begins to narrow its dispersion pattern as frequency rises toward the upper end of the midrange band.