Acura TL A-Pillar Speaker Size
The Acura TL A-Pillar accommodates a 1.5 inch speaker size across all listed model years. Tweeter units are the compatible type for the audio system in that location. These specifications cover the 2004 to 2014 model year range.
| Year | Type | Size (inch) |
|---|---|---|
| 2014 | Tweeter | 1.5 |
| 2013 | Tweeter | 1.5 |
| 2012 | Tweeter | 1.5 |
| 2011 | Tweeter | 1.5 |
| 2010 | Tweeter | 1.5 |
| 2009 | Tweeter | 1.5 |
| 2008 | Tweeter | 1.5 |
| 2007 | Tweeter | 1.5 |
| 2006 | Tweeter | 1.5 |
| 2005 | Tweeter | 1.5 |
| 2004 | Tweeter | 1.5 |
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. |
Additional Notes
- The A-pillar location in the Acura TL positions speakers at the uppermost forward corners of the cabin interior, mounted within the triangular trim panels flanking the windshield on each side.
- A-pillar placement situates speakers near ear level for front-seat occupants, which is acoustically significant for high-frequency content where directional perception is most acute.
- The spatial constraints of A-pillar housings are among the most restrictive in automotive installations, as the narrow triangular trim panels limit the available mounting diameter and depth.
- The 1.5-inch diameter specified across all model years reflects the tight dimensional envelope of the Acura TL A-pillar housing, which cannot accommodate larger driver frames.
- At 1.5 inches, the cone area of the driver is small, which limits low-frequency extension but allows the lightweight diaphragm to respond rapidly to high-frequency transients.
- Tweeters are dedicated high-frequency transducers, typically operating from approximately 2,000 Hz upward, and are designed to reproduce the upper harmonics, presence, and air regions of the audio spectrum.
- A 1.5-inch tweeter in the A-pillar location reinforces high-frequency directionality for front-seat listeners, as treble frequencies above several kilohertz are strongly directional and benefit from proximity to the listener's ear level.
- The A-pillar mounting angle naturally aims the tweeter face toward the listening position in the front seating area, which aligns with the directional radiation pattern characteristic of small tweeter drivers.
- Because tweeters handle only the upper frequency band, no significant excursion or mechanical stress is placed on the small enclosure volume available within the A-pillar trim, making the location acoustically compatible with tweeter-only operation.