1985 BMW 735i Speaker Sizes
The 1985 BMW 735i speaker size chart provides factory audio system specifications for replacement or aftermarket upgrade purposes. Information includes speaker locations within the vehicle, identifying positions in the front kick panel and rear deck lid areas. Data covers factory specifications to assist with aftermarket component installation and audio system modifications.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Front Kick Panel | 4x6 | Full-Range |
|
| Rear Deck Lid | 5.25 | Midbass / Full-Range |
|
1985 BMW 735i Speaker Replacement Summary
2
total positions
1
easy to replace
0
high priority
0
professional only
Replacement difficulty:
Low: 1 Medium: 1 High: 0Replacement priority:
High: 0 Medium: 2 Low: 01985 BMW 735i 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 kick panel speakers in the 1985 BMW 735i typically handle most of the audio output due to their full-range capability, making them a logical starting point for upgrades in this configuration.
- The 4x6 inch form factor presents an oval configuration that may limit aftermarket options compared to round speaker designs, though adapters can potentially expand compatibility.
- Rear deck lid locations often receive less attention than front positions, but the 5.25 inch openings support both midbass and full-range speaker types, offering flexibility in sound staging approaches.
- Full-range speakers handle the entire frequency spectrum through a single cone, while dedicated midbass drivers focus on lower midrange frequencies and would require separate tweeters for higher frequencies.
- The single DIN radio opening suggests that head unit replacement could modernize audio processing capabilities without requiring extensive dashboard modifications.
- Component speaker systems might prove challenging in this configuration since the front kick panels would need to accommodate both woofer and tweeter mounting, or require separate tweeter installation points.
- Sound improvement potential exists primarily in the front soundstage given the kick panel positioning, though rear fill from the deck lid speakers contributes to overall cabin coverage.
- The 5.25 inch rear speakers could benefit from midbass-specific drivers if front speakers handle high frequency reproduction, creating a more distributed frequency approach.