1997 BMW 328i Speaker Sizes
Factory speaker specifications for the 1997 BMW 328i are detailed in a speaker size chart covering three locations throughout the audio system. Information includes replacement sizes for rear deck lid, front kick panel, and front door panel positions. Aftermarket upgrade options and factory specifications are listed for each speaker location within the system.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 6x8 | Full-Range |
|
| Front Kick Panel | 5.25 | Midbass |
|
| Rear Deck Lid | 4 | Midrange |
|
1997 BMW 328i Speaker Replacement Summary
3
total positions
2
easy to replace
1
high priority
0
professional only
Replacement difficulty:
Low: 2 Medium: 1 High: 0Replacement priority:
High: 1 Medium: 2 Low: 01997 BMW 328i 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 panel speakers in the 1997 BMW 328i use a 6x8 inch configuration and accommodate full-range drivers, which suggests these locations may handle the broadest frequency spectrum in the factory sound system.
- Full-range speakers typically reproduce frequencies from bass through treble without requiring separate tweeters or woofers, making the front door panel positions potentially central to the overall audio presentation.
- The front kick panel locations accept 5.25 inch midbass drivers, which typically focus on lower-midrange and upper-bass frequencies rather than the full audio spectrum.
- Midbass speakers generally emphasize frequencies between approximately 80 Hz and 500 Hz, providing foundation to male vocals and instrumental body without extending into deep bass territory.
- The rear deck lid positions utilize 4 inch midrange drivers, the smallest speaker size among the three locations in the 1997 BMW 328i.
- Midrange drivers typically handle frequencies between roughly 300 Hz and 5 kHz, which includes much of the human vocal range and fundamental tones of many instruments.
- The three-location configuration suggests a frequency distribution strategy where different speakers may handle specific portions of the audio spectrum based on their size and type designation.
- Replacement priorities might consider the front door panels first given their full-range designation, followed by the front kick panels for midbass reinforcement, with rear deck midrange speakers potentially serving a supporting role.
- The single DIN radio opening indicates a standard-height head unit slot, which may limit display size but generally accommodates most aftermarket receivers without dashboard modification.
- Component speaker systems with separate tweeters might integrate with the existing full-range door locations, though mounting provisions for additional drivers would require verification.
- The 6x8 inch oval format in the doors represents a less common size compared to round 6.5 inch speakers, which may somewhat narrow aftermarket selection compared to more standardized dimensions.