Audi 100 Series Rear Deck Center Speaker Size
The Audi 100 Series rear deck center location accommodates a 5.25 inch speaker size. Compatible types for the audio system include midbass and full-range replacement units. These specifications cover the 1971 model year.
| Year | Type | Size (inch) |
|---|---|---|
| 1971 | Midbass / Full-Range | 5.25 |
Speaker Types
| Type | Description |
|---|---|
| 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 deck center position in the 1971 Audi 100 Series accommodates a speaker mounted within the parcel shelf structure, a surface that typically sits horizontally behind the rear seating and below the rear window.
- Horizontal mounting on a rear deck directs acoustic output upward toward the headliner and rear glass, which affects the dispersion pattern and how sound propagates through the cabin.
- A 5.25-inch driver occupies a moderate cone surface area, which supports useful output in the upper bass and midrange frequencies, roughly from around 80 Hz up through several kilohertz depending on the driver's construction.
- The rear deck center position places a single driver along the vehicle's longitudinal axis, a placement that can contribute to centered or blended rear-channel sound distribution across the cabin width.
- Midbass drivers in a 5.25-inch format at a rear deck center location are suited to reinforcing the lower midrange and upper bass registers, frequencies that contribute body and warmth to the audio output in the rear cabin area.
- Full-range drivers in a 5.25-inch format are designed to reproduce a broader spectrum of frequencies from a single cone, making the type applicable where no additional tweeters or woofers are installed at the same location.
- The 5.25-inch diameter specification for the Audi 100 Series rear deck center position defines the outer frame diameter required to fit within the mounting cutout of that deck surface.
- A rear deck center location in a vehicle of this era typically involves a shallow mounting depth constraint, as the deck panel may have limited clearance above structural or trunk elements below.