Mazda Protege Rear Door Panel Speaker Size
The Mazda Protege rear door panel accommodates a 6.5 inch speaker size and 5.25 inch speakers, with each location supporting the unique size requirements of the audio system. Compatible types for replacement units include midbass and full-range configurations. The specifications cover a range of years from 2000 to 2003.
| Year | Type | Size (inch) |
|---|---|---|
| 2003 | Midbass / Full-Range | 6.5 |
| 2002 | Midbass / Full-Range | 6.5 |
| 2001 | Midbass / Full-Range | 5.25 |
| 2000 | 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 door panel location places speakers within the lower portion of the vehicle's interior doors, a position that favors low-to-mid frequency reproduction due to the proximity to the floor and the reflective surfaces of the door cavity.
- Door panel installations are typically recessed into a molded cavity, meaning the speaker's mounting depth and diameter must conform to the available cutout space without interference from window mechanisms or structural door reinforcements behind the panel.
- The 6.5 inch diameter specified for the Mazda Protege rear door panel in 2002 and 2003 occupies a larger cone area than smaller sizes, which translates to greater air displacement and stronger low-frequency output in the door cavity.
- The 5.25 inch diameter specified for 2000 and 2001 models moves less air than a 6.5 inch driver, which shifts the effective low-frequency extension upward and makes the speaker more reliant on the door cavity's resonant properties to reinforce bass reproduction.
- A midbass speaker is a driver optimized for frequencies roughly between 80 Hz and 500 Hz, covering the lower midrange and upper bass regions where male vocals, bass guitar, and lower-register instruments are most present.
- A full-range speaker is designed to reproduce a wider frequency band than a dedicated midbass driver, typically extending from below 100 Hz up through several kilohertz, allowing a single driver to cover bass, midrange, and portions of the high-frequency spectrum without a separate tweeter.
- In a rear door panel position, a full-range driver handles spatial fill and ambient reproduction behind the listening position, whereas a midbass driver in the same location focuses energy on reinforcing the low-frequency foundation of the soundstage.
- The rear door placement creates a longer acoustic path from the speaker to the front listening position compared to front door or dash locations, which affects the time alignment and phase relationship between rear and front drivers in a multi-speaker system.
- Because the rear door panel faces inward toward the cabin rather than directly toward seated occupants, sound from drivers in the location undergoes reflection off seat backs and interior trim before reaching listeners.
- The compatibility of both midbass and full-range types across all listed years indicates that the rear door cutout dimensions for each respective size support either driver topology without requiring separate adapter hardware specific to type.