1999 Cadillac DeVille Speaker Sizes
The 1999 Cadillac DeVille factory audio system features specific mounting locations that accept various audio components. Center dash accommodates 4 inch speakers, and dashboard supports 4x6 inch units. Front door panel and rear door panel accept 5.25 inch speakers, while front door panel accommodates a 1 inch speaker size. Additionally, rear deck lid supports 6x9 inch units. Compatible speaker types for a system replacement and upgrade include tweeter, midrange, full-range, and midbass.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Center Dash | 4 | Midrange |
|
| Dashboard | 4x6 | Full-Range |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 5.25 | Midbass / Full-Range |
|
| Rear Deck Lid | 6x9 | Full-Range |
|
| Rear Door Panel | 5.25 | Midbass / Full-Range |
|
1999 Cadillac DeVille Speaker Replacement Summary
6
total positions
4
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 4 Medium: 2 High: 0Replacement priority:
High: 2 Medium: 4 Low: 01999 Cadillac DeVille 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 Cadillac DeVille front door panels accommodate both 1-inch tweeters and 5.25-inch speakers, suggesting a component-style configuration where high frequencies and mid-to-low frequencies may be handled separately for potentially improved sound staging.
- Full-range speakers could be installed in multiple locations including the dashboard, front door panels, rear door panels, and rear deck lid, offering flexibility in choosing between dedicated frequency-specific drivers or simpler all-in-one solutions.
- The 6x9-inch rear deck lid speakers tend to be the largest drivers in this configuration, which could make them candidates for handling lower frequency reproduction if the factory system relies on larger cone area for bass response.
- A 4-inch midrange speaker location exists in the center dash, positioned where it might contribute to vocal clarity and center image localization in the 1999 Cadillac DeVille soundstage.
- The availability of both Single DIN and Double DIN radio compatibility suggests the head unit opening may accommodate aftermarket receivers of varying sizes, though physical verification would be recommended before purchase.
- Midbass-capable 5.25-inch speakers in the door panels could provide punch in the lower midrange frequencies, while the tweeter locations might extend high-frequency response beyond what full-range drivers alone typically deliver.
- The dashboard 4x6-inch full-range speakers occupy a non-standard size that may limit aftermarket options compared to more common round speaker formats, potentially requiring adapters or custom mounting solutions.
- Component speaker systems with separate tweeters and woofers could theoretically utilize the existing 1-inch and 5.25-inch front door locations, though crossover networks and wiring configurations would need consideration during installation.