1990 BMW 325is Speaker Sizes
The 1990 BMW 325is speaker size chart provides factory audio system specifications for component and speaker locations. Information includes replacement sizes for front door panel and rear door panel positions. Data assists with aftermarket speaker upgrade planning by documenting stock audio configurations and available mounting locations throughout the vehicle.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 5.25 | Midbass / Full-Range |
|
| Rear Door Panel | 5.25 | Midbass / Full-Range |
|
1990 BMW 325is 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: 01990 BMW 325is 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 1990 BMW 325is door panel speaker locations accept either midbass drivers or full-range speakers, offering flexibility in system configuration based on whether separate tweeters will be incorporated or if a single-driver solution is preferred.
- Replacing factory speakers in both front and rear positions maintains uniform sizing at 5.25 inches, which simplifies component selection when planning a complete interior audio refresh.
- Full-range speakers in these positions would handle the entire frequency spectrum independently, while midbass drivers would typically pair with separate high-frequency components for a more segmented approach to sound reproduction.
- The single DIN radio opening provides standard aftermarket head unit compatibility, potentially enabling enhanced signal processing and power delivery to upgraded speaker components.
- Sound quality improvements would likely come from replacing aging factory paper cone speakers with modern materials such as polypropylene or treated composite cones that offer better damping characteristics and durability.
- Component speaker systems utilizing the midbass option generally provide greater control over crossover points and frequency distribution compared to full-range alternatives in the same mounting locations.