Audi S5 Sportback Rear Deck Lid Speaker Size
The Audi S5 Sportback rear deck lid accommodates a 3.5 inch speaker size and supports 8 inch units. Compatible types across these locations include full-range speakers and woofers. These specifications apply to the 2018 model year.
| Year | Type | Size (inch) |
|---|---|---|
| 2018 | Full-Range | 3.5 |
| 2018 | Woofer | 8 |
Speaker Types
| Type | Description |
|---|---|
| Woofer | A larger driver for low frequencies, typically from about 40 Hz up to 1,000 Hz. It delivers most of the bass and lower midrange in a door or panel speaker system. |
| 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 deck lid of the Audi S5 Sportback positions speakers within a horizontal surface at the rear of the cabin, where sound radiates upward and reflects off the rear windshield toward the listening area.
- A deck lid location typically constrains mounting depth, as the structural layers of the panel limit how far a speaker basket can extend downward into the trunk cavity.
- The 3.5-inch full-range driver installed in the Audi S5 Sportback rear deck lid handles the full audible frequency spectrum from a single cone, covering highs, mids, and limited low-mid bass within one compact unit.
- At 3.5 inches, the cone surface area is small, which limits low-frequency output but allows the driver to reproduce high-frequency detail with relatively controlled directional dispersion from the deck lid surface.
- Full-range drivers at this size are well-suited to fill a wide frequency band in a secondary or supplementary role, as the small diameter allows a lighter, faster-moving cone capable of tracking high-frequency transients.
- The 8-inch woofer occupies the same rear deck lid location and is dedicated exclusively to low- and low-mid frequency reproduction, relieving the 3.5-inch driver of bass duties entirely.
- An 8-inch cone presents significantly greater surface area than the 3.5-inch unit, enabling higher air displacement and deeper bass extension within the constraints of a deck lid installation.
- Woofers in a deck lid position benefit from the acoustic coupling with the trunk cavity below, where air volume behind the cone can reinforce low-frequency output.
- The physical separation between the 8-inch woofer and the 3.5-inch full-range driver on the same panel creates a two-driver arrangement where each unit operates within a distinct frequency band suited to each size.
- Deck lid mounting places both drivers in a near-horizontal plane, which affects the vertical radiation angle and influences how bass energy from the 8-inch woofer pressurizes the rear cabin.