Audi allroad D-Pillar Speaker Size
The Audi allroad D-Pillar accommodates a 3.5 inch speaker size across all listed model years. Midrange units are the compatible audio replacement types for the system. The specifications cover 2013 to 2016.
| Year | Type | Size (inch) |
|---|---|---|
| 2016 | Midrange | 3.5 |
| 2015 | Midrange | 3.5 |
| 2014 | Midrange | 3.5 |
| 2013 | Midrange | 3.5 |
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 D-pillar is the rearmost structural pillar in a vehicle, positioning speakers at the far back corners of the cabin, typically near the roofline or upper rear quarter panel area.
- Placement at the D-pillar situates speakers at a significant distance from front-seat occupants, which affects how sound energy disperses across the cabin length.
- The Audi allroad D-pillar accommodates a 3.5 inch speaker diameter across the 2013 through 2016 model years, establishing a consistent spatial constraint for any compatible driver.
- A 3.5 inch driver operates within a physically compact cone area, which limits low-frequency excursion capability and makes the format better suited to upper midrange reproduction than to bass reinforcement.
- The shallow depth and narrow baffle space typical of D-pillar enclosures are compatible with the relatively modest magnet and basket dimensions of a 3.5 inch driver.
- Midrange speakers are designed to reproduce the frequency band roughly between 300 Hz and 5 kHz, covering the core of vocal intelligibility and a wide portion of instrument harmonic content.
- A midrange driver in a D-pillar location contributes ambient fill and spatial width to the rear of the cabin, reinforcing the sense of acoustic envelopment for rear-seat passengers.
- The 3.5 inch format in a midrange role at the D-pillar is consistent with a system architecture where dedicated woofers handle low frequencies at other locations and tweeters handle high frequencies elsewhere in the vehicle.
- Midrange drivers are generally not designed to reproduce frequencies below approximately 200 to 300 Hz, meaning crossover filtering is typically required to protect the driver from low-frequency excursion at higher output levels.
- The rearward position of a D-pillar speaker can introduce time-alignment differences relative to front-mounted drivers, a factor that is relevant when integrating a midrange at this location into a multi-driver system.