1991 Cadillac Brougham Speaker Sizes

The speaker size chart for the 1991 Cadillac Brougham lists factory speaker specifications and locations within the audio system. Information covers replacement and aftermarket upgrade options for speakers mounted in the front door panel and rear deck lid positions. Details include standard factory speaker configurations and compatible aftermarket speaker specifications for each location.

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Speaker Details by Location
Location Size Type Notes
Front Door Panel 5.25 Midbass / Full-Range
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Rear Deck Lid 6x9 Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low

1991 Cadillac Brougham Speaker Replacement Summary

2 total positions
2 easy to replace
1 high priority
0 professional only

Replacement difficulty:

Low: 2 Medium: 0 High: 0

Replacement priority:

High: 1 Medium: 1 Low: 0

1991 Cadillac Brougham Radio Slot Size (DIN)

DIN Type Size (inch) Size (mm) Notes
Single DIN or Double DIN 7"×2" or 7"×4" 180×50 or 180×100 Vehicle supports both radio sizes
  • Always measure the slot before purchasing a new radio
  • Check slot depth - it may vary

Additional Notes

  • The 1991 Cadillac Brougham front door panels accommodate 5.25 inch speakers, which can function as either midbass drivers or full-range units depending on the audio configuration.
  • Rear deck lid positions accept 6x9 inch speakers designed for full-range operation, providing broader frequency coverage in the rear listening area.
  • Replacing the front door speakers with dedicated midbass components could enhance lower frequency response when paired with separate tweeters in a component system.
  • The 6x9 inch format in the rear deck typically offers improved bass output compared to smaller round speakers due to increased cone surface area.
  • Full-range speakers in both locations would maintain factory-style sound reproduction without requiring additional crossovers or amplification.
  • The single DIN and double DIN radio compatibility allows for aftermarket head unit installation, which may provide better power output and signal processing for upgraded speakers.
  • Coaxial speakers in the 5.25 inch and 6x9 inch sizes would integrate tweeters into single units, simplifying installation while maintaining frequency range.
  • Power handling capacity and sensitivity ratings of replacement speakers would influence overall volume capability and sound quality improvements.