1991 Alfa Romeo 164 Speaker Sizes
The 1991 Alfa Romeo 164 speaker size chart provides factory audio system specifications for OEM and aftermarket replacement purposes. Information covers speaker locations within the vehicle, including front door panel and rear deck lid positions. Data supports audio system upgrade planning by detailing factory speaker specifications and available mounting locations for aftermarket installations.
As an Amazon Associate, we may earn a commission from purchases made through links marked. Read more in our disclaimer.
| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 4 | Midrange |
|
| Rear Deck Lid | 5.25 | Midbass / Full-Range |
|
1991 Alfa Romeo 164 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: 01991 Alfa Romeo 164 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 front door panels in the 1991 Alfa Romeo 164 accommodate 4-inch midrange speakers, which typically handle vocal frequencies and instrumental midtones rather than reproducing the full audio spectrum, suggesting these positions were designed primarily for clarity in voice and upper-frequency content rather than bass response.
- Rear deck lid positions accept 5.25-inch speakers with compatibility for both midbass and full-range types, indicating these locations could serve either as dedicated low-frequency support or as complete audio sources depending on the chosen speaker configuration.
- The original audio system layout suggests a two-position design where front speakers focus on midrange frequencies while rear speakers potentially handle broader frequency ranges or bass reinforcement, a common approach in automotive audio systems from this production era.
- Upgrading the 4-inch front midrange speakers could enhance vocal clarity and instrumental definition, particularly noticeable in genres emphasizing vocals or acoustic instruments, though bass response would still depend on the rear speaker selection.
- The 5.25-inch rear positions offer flexibility between midbass speakers that would complement separate tweeters and midrange drivers, or full-range speakers that could reproduce most frequencies independently, allowing different approaches to system configuration based on listening preferences.
- The single DIN radio opening in the 1991 Alfa Romeo 164 provides standard mounting dimensions for aftermarket head units, which could provide additional power and processing capabilities to drive replacement speakers more effectively than factory amplification.
- The relatively compact 4-inch front speaker size may limit maximum volume capabilities and dynamic range compared to larger drivers, though quality aftermarket midrange speakers in this size can still provide substantial improvements in tonal accuracy and detail over factory units.