2003 Mitsubishi Diamante Speaker Sizes

The 2003 Mitsubishi Diamante speaker size chart provides factory specifications for OEM and aftermarket replacement audio components. Information covers speaker locations including dashboard, front door panel, and rear deck lid positions. Data includes fitment specifications to facilitate system upgrade and aftermarket installation planning.

As an Amazon Associate, we may earn a commission from purchases made through links marked. Read more in our disclaimer.

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

2003 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

2003 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 factory audio configuration in the 2003 Mitsubishi Diamante includes 1-inch tweeters positioned in both the dashboard and front door panels, which handle higher frequency reproduction separately from the larger drivers.
  • Component speaker systems may integrate more naturally with this configuration since the vehicle already separates tweeters from midbass duties in the front soundstage, potentially simplifying aftermarket upgrades.
  • The 6.5-inch openings in the front door panels and rear deck lid accept either midbass drivers designed for component systems or full-range coaxial speakers that combine multiple frequency ranges in a single unit.
  • Upgrading the front door 6.5-inch speakers tends to produce more noticeable improvements in overall sound quality compared to rear speakers, as front staging typically dominates the listening experience in automotive environments.
  • The double DIN radio compatibility alongside single DIN options provides flexibility for head unit upgrades that might better drive aftermarket speakers with increased power output or enhanced signal processing capabilities.
  • Replacing the existing tweeters could prove challenging depending on mounting configurations, whereas the 6.5-inch locations typically offer more straightforward installation paths for aftermarket components.
  • Matching sensitivity ratings between replacement speakers and the factory head unit power output helps maintain adequate volume levels without requiring additional amplification in the audio system.