1987 Porsche 911 Speaker Sizes
The 1987 Porsche 911 speaker size chart provides factory specifications for audio system components in door panel locations. Information includes replacement speaker data for both front and rear door panels, detailing dimensions and configurations for aftermarket upgrade compatibility. Factory audio system details assist in identifying appropriate speaker options for installation in original locations without modifications.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 5.25 | Midbass / Full-Range |
|
| Rear Door Panel | 4x6 | Full-Range |
|
1987 Porsche 911 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: 01987 Porsche 911 Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN | 7"×2" | 180×50 | Standard size for basic car radios with small display or no display |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 1987 Porsche 911 features a Single DIN radio opening, which provides the foundation for the audio system and determines the type of head unit that can be installed for signal processing and power output.
- Front door panels accommodate 5.25 inch speakers with compatibility for either midbass or full-range types, suggesting flexibility in component selection based on whether a separate tweeter configuration is planned or a standalone full-range solution is preferred.
- Rear door panel locations are designed for 4x6 inch full-range speakers, which would typically handle mid and high frequencies in a more limited space compared to the front locations.
- The size difference between front and rear speakers (5.25 inch versus 4x6 inch) indicates that the 1987 Porsche 911 may have been engineered with a front-biased sound stage, where larger drivers up front could provide stronger bass response and primary listening focus.
- Midbass capability in the front door panels suggests that these positions could support component speaker systems with separate tweeters, potentially allowing for improved frequency separation and clarity in the upper ranges.
- The 4x6 inch configuration in the rear panels, being an oval form factor, may offer slightly more cone area than a comparable round speaker, which could contribute to fuller sound despite the rear placement constraints.
- Full-range compatibility across both front and rear positions indicates that a straightforward replacement approach using coaxial speakers would be viable for those seeking to maintain a simpler installation without running additional wiring for separate tweeters.
- The front door panel speakers, given their larger 5.25 inch size and midbass compatibility, would likely benefit most from replacement when upgrading the audio system, as they handle the critical midrange and lower frequencies that form the foundation of most musical content.