1984 BMW 733i Speaker Sizes
The 1984 BMW 733i factory audio system contains specific factory locations for audio components. Front kick panel locations accommodate a 4x6 inch speaker size, and rear deck lid locations accept 5.25 inch units. Compatible types for replacement and upgrade applications include full-range and midbass units.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Front Kick Panel | 4x6 | Full-Range |
|
| Rear Deck Lid | 5.25 | Midbass / Full-Range |
|
1984 BMW 733i 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: 01984 BMW 733i 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 locations in the 1984 BMW 733i accommodate 4x6 inch full-range speakers, which serve as the primary sound source for front passengers and may benefit from replacement when factory units deteriorate over time.
- Full-range speakers combine multiple frequency ranges into a single unit, potentially simplifying installation compared to component systems that separate tweeters from woofers.
- The rear deck lid positions accept 5.25 inch speakers with compatibility for both midbass and full-range types, providing flexibility in system configuration depending on desired sound characteristics.
- Midbass speakers focus on mid and lower frequency reproduction, which could complement front full-range units by reinforcing bass response throughout the cabin without requiring a dedicated subwoofer.
- The 1984 BMW 733i utilizes a single DIN radio opening, limiting head unit options to standard-height receivers unless dash modifications are made to accommodate larger double DIN units.
- Upgrading speakers while retaining the factory radio might produce modest improvements, though the head unit's amplifier output and signal processing capabilities could limit overall sound quality gains.
- The kick panel location typically provides favorable sound staging for front occupants, as speakers positioned at floor level can create a wider stereo image compared to door-mounted alternatives.
- Aftermarket 4x6 inch speakers often feature higher power handling and sensitivity ratings than original equipment, potentially increasing volume capability and clarity when driven by the same amplifier power.