1984 BMW 733i Speaker Sizes

The 1984 BMW 733i speaker size chart provides factory specifications and locations for replacement audio components. Details cover front kick panel and rear deck lid positions within the factory system. Information supports aftermarket upgrade planning by documenting original equipment specifications for each speaker location throughout the audio system.

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Speaker Details by Location
Location Size Type Notes
Front Kick Panel 4x6 Full-Range
  • Cramped working position
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Deck Lid 5.25 Midbass / Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low

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: 0

Replacement priority:

High: 0 Medium: 2 Low: 0

1984 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.