1999 Nissan Altima Speaker Sizes
The 1999 Nissan Altima factory audio system includes front door panel locations that accommodate a 1 inch speaker size, while front door panel and rear deck lid locations accept 6.5 inch units. Tweeter, midbass, and full-range driver designs function as standard replacement and upgrade components within the layout.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Deck Lid | 6.5 | Midbass / Full-Range |
|
1999 Nissan Altima Speaker Replacement Summary
3
total positions
3
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 3 Medium: 0 High: 0Replacement priority:
High: 2 Medium: 1 Low: 01999 Nissan Altima 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 Nissan Altima features a component speaker configuration in the front doors, with separate tweeters and midbass drivers allowing for potential upgrades that maintain this architectural separation for enhanced sound staging.
- Both front and rear positions accommodate 6.5 inch drivers, suggesting a consistent tonal balance across the cabin when replacing factory speakers with aftermarket options of similar sensitivity ratings.
- The front door tweeters at 1 inch may benefit from replacement with higher-quality silk or metal dome units, as factory tweeters in this era tend to exhibit limited frequency extension and resolution in the upper treble range.
- Component speakers designed for the front doors could utilize the existing tweeter location, though integration may require additional crossover mounting considerations depending on the aftermarket system selected.
- The 6.5 inch rear deck speakers likely serve as fill speakers in the audio system, though their replacement could contribute to overall sound quality when matched appropriately with front speaker characteristics.
- Full-range speakers in the 6.5 inch positions would handle the entire frequency spectrum without separate tweeters, while midbass options would require the existing 1 inch tweeters to remain functional or be upgraded simultaneously.
- The dual DIN and single DIN radio compatibility in the 1999 Nissan Altima provides flexibility for head unit upgrades that could better drive aftermarket speakers through increased power output or improved signal processing capabilities.
- Speaker replacement priority would typically focus on the front door components first, as these positions contribute most significantly to sound stage and imaging for front-seat occupants during typical listening scenarios.