1989 Buick Riviera Speaker Sizes
The speaker size chart for the 1989 Buick Riviera details factory audio specifications and replacement options. Information covers locations including front door panel and rear deck lid positions. Data includes factory speaker specifications and compatible aftermarket sizes for system upgrade purposes. Reference guide assists with identifying proper replacement speakers when modifying or restoring the factory audio system.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 4x6 | Full-Range |
|
| Rear Deck Lid | 6x9 | Full-Range |
|
1989 Buick Riviera 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: 01989 Buick Riviera 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 1989 Buick Riviera uses two different speaker formats, with 4x6 inch speakers in the front door panels and larger 6x9 inch speakers in the rear deck lid location.
- Both speaker locations accommodate full-range speaker types rather than separate component systems, suggesting the factory configuration prioritized simplicity in the audio setup.
- The front door panel speakers may be the first candidates for replacement since door-mounted speakers often handle vocal frequencies and midrange content that directly affects perceived sound quality during normal listening.
- The oval 4x6 inch form factor in the front provides a smaller radiating surface area compared to the rear speakers, which could limit low-frequency output from the front stage.
- Rear deck speakers at 6x9 inches offer a larger cone area that typically produces fuller bass response and higher output levels, potentially serving as the primary source of low-frequency content in the factory system.
- Full-range speaker compatibility in both locations means aftermarket replacements would need to reproduce the entire frequency spectrum through a single cone rather than dividing duties between tweeters and woofers.
- The single DIN radio opening provides a standard mounting depth and width, allowing for straightforward head unit upgrades without dashboard modifications.
- Replacing the rear deck speakers might deliver the most noticeable improvement in overall volume and bass presence due to their larger size and greater power handling capacity.