1999 Porsche Boxster Speaker Sizes
The 1999 Porsche Boxster factory audio system contains specific factory speaker locations. Front door panels accommodate 4 inch speakers, while rear door panels accept 5.25 inch units. Midrange, midbass, and full-range driver units serve as viable replacement and upgrade components for the vehicle.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 4 | Midrange |
|
| Rear Door Panel | 5.25 | Midbass / Full-Range |
|
1999 Porsche Boxster Speaker Replacement Summary
2
total positions
2
easy to replace
1
high priority
0
professional only
Replacement difficulty:
Low: 2 Medium: 0 High: 0Replacement priority:
High: 1 Medium: 1 Low: 01999 Porsche Boxster Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN or Double DIN | 7"×2" or 7"×4" | 180×50 or 180×100 | Vehicle supports both radio sizes |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 1999 Porsche Boxster features a two-way speaker configuration with 4-inch midrange drivers in the front door panels and 5.25-inch components in the rear doors.
- Front door panel speakers are limited to midrange frequencies, suggesting these units handle vocal and instrumental reproduction in the middle frequency spectrum rather than low-end bass response.
- Rear door panels accept either midbass or full-range 5.25-inch speakers, providing flexibility in system design depending on whether dedicated bass reproduction or broader frequency coverage is desired.
- The size difference between front and rear locations indicates that lower frequency content may be directed primarily to the rear 5.25-inch positions, while the front 4-inch drivers focus on midrange clarity.
- Aftermarket speaker selection for the front doors would be constrained to 4-inch midrange components, which are less common than standard sizes like 6.5-inch or 5.25-inch full-range options.
- Installing full-range speakers in the rear positions could potentially eliminate the need for additional subwoofers in basic audio upgrades, though midbass-specific drivers might provide improved low-frequency extension when paired with a separate subwoofer.
- Both single DIN and double DIN head units are compatible with the dashboard opening, allowing for installation of navigation units or larger touchscreen displays if desired during audio system upgrades.
- The relatively small 4-inch front speaker size may result in limited output capability compared to larger drivers, potentially making the rear speakers the primary contributors to overall sound pressure levels in the cabin.