1999 Mitsubishi Diamante Speaker Sizes

The 1999 Mitsubishi Diamante factory audio system includes specific locations configured with designated components. The dashboard accommodates a 1 inch speaker size, while the front door panel accepts 5.25 inch speakers, and the front door panel also supports 6.5 inch units. The rear deck lid accommodates 6x9 inch units. Compatible speaker types for replacement and upgrade include tweeter, midbass, and full-range.

Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.

Speaker Details by Location
Location Size Type Notes
Dashboard 1 Tweeter
  • Requires panel disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Front Door Panel 5.25 Midbass / Full-Range
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Front Door Panel 6.5 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

1999 Mitsubishi Diamante Speaker Replacement Summary

4 total positions
3 easy to replace
2 high priority
0 professional only

Replacement difficulty:

Low: 3 Medium: 1 High: 0

Replacement priority:

High: 2 Medium: 2 Low: 0

1999 Mitsubishi Diamante 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 1999 Mitsubishi Diamante factory audio system incorporates four distinct speaker locations with varying sizes, suggesting a multi-component configuration that separates frequency ranges across different mounting points.
  • Dashboard tweeters measuring 1 inch handle high-frequency reproduction, which typically indicates dedicated treble response in the factory sound staging design.
  • Front door panels accommodate dual size options at 5.25 inch and 6.5 inch, both supporting midbass or full-range drivers, which provides flexibility when selecting replacement components based on available mounting depth and desired tonal characteristics.
  • The rear deck lid utilizes 6x9 inch oval speakers configured for full-range operation, a common factory placement that may contribute to rear soundstage fill and bass reinforcement.
  • Replacing front door speakers might take priority given their proximity to front seat occupants and their role in midrange clarity and vocal reproduction.
  • Component speaker systems with separate woofers and tweeters could leverage the existing dashboard tweeter locations if mounting adapters accommodate aftermarket units, potentially preserving the factory separation design.
  • Coaxial full-range speakers in either 5.25 inch or 6.5 inch configurations would consolidate frequency reproduction in the door panels, simplifying installation while potentially redundant with dashboard tweeters.
  • The rear deck 6x9 inch location might benefit from full-range replacements that extend low-frequency output, though rear-focused bass can sometimes interfere with front soundstage imaging.
  • Both Single DIN and Double DIN radio compatibility suggests the dash opening may support either standard or double-height aftermarket head units, which could influence amplifier integration options for upgraded speakers.
  • Aftermarket speakers with higher sensitivity ratings than factory units could produce noticeably louder output with the same head unit power, though tonal balance depends on matching speaker impedance specifications.