1999 Pontiac Firebird Speaker Sizes
The 1999 Pontiac Firebird speaker size chart displays factory audio specifications and locations for replacement or aftermarket upgrade purposes. Information covers front door panel and rear door panel speaker installations. Data includes original equipment specifications to assist with aftermarket component compatibility for the factory audio system.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Door Panel | 6.5 | Midbass / Full-Range |
|
1999 Pontiac Firebird 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 Pontiac Firebird 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 Pontiac Firebird front door panels accommodate 6.5-inch speakers that can function as either midbass drivers or full-range units, offering flexibility in component selection based on system design goals.
- Rear door panels maintain the same 6.5-inch configuration as the front locations, allowing for consistent driver selection across all four positions if a matched speaker set is preferred.
- Both midbass and full-range speaker types fit the available mounting locations, with midbass drivers typically requiring separate tweeters for high-frequency reproduction while full-range units handle the entire frequency spectrum independently.
- The uniform 6.5-inch sizing throughout the door locations may simplify the selection process when considering aftermarket speaker upgrades, as a single four-speaker package could potentially address all positions.
- Full-range speakers in these locations would provide a self-contained solution without additional components, while midbass configurations would necessitate tweeter placement elsewhere in the cabin for complete frequency coverage.
- The radio opening supports both single DIN and double DIN head units, providing options for receivers with varying feature sets and display configurations during potential audio system upgrades.
- Door-mounted speakers often benefit from sound deadening material application to the outer door skin, which may reduce panel resonance and improve midbass response in these locations.
- The 6.5-inch format generally offers a balance between low-frequency extension and mounting depth requirements compared to smaller or larger driver sizes in typical door panel applications.