1998 Infiniti Q45 Speaker Sizes

A 1998 Infiniti Q45 speaker size chart provides factory audio specifications for dashboard, rear deck lid, and front door panel locations. Information includes aftermarket replacement speaker specifications for upgrading the factory audio system. Data covers standard speaker configurations found in the original equipment audio system, helping determine compatible aftermarket upgrade options for each location.

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

1998 Infiniti Q45 Speaker Replacement Summary

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

Replacement difficulty:

Low: 2 Medium: 1 High: 0

Replacement priority:

High: 1 Medium: 2 Low: 0

1998 Infiniti Q45 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 1998 Infiniti Q45 uses three distinct speaker locations with varying sizes, suggesting a tiered approach where door panel speakers might warrant priority attention given their 6.5 inch size and positioning for primary listening.
  • Dashboard tweeters at 1 inch could handle high-frequency reproduction separately from the larger speakers, potentially allowing for improved clarity in the upper sound spectrum when replaced with quality components.
  • The rear deck lid accommodates 5.25 inch speakers compatible with both midbass and full-range types, offering flexibility in configuration depending on whether the system focuses on dedicated frequency ranges or broader coverage.
  • Front door panel locations accept 6.5 inch midbass or full-range speakers, which might serve as the foundation for sound output given their size advantage over the rear speakers and their proximity to front seat occupants.
  • The available tweeter, midbass, and full-range compatibility across different locations could allow for component speaker systems in the 1998 Infiniti Q45, where tweeters handle highs while larger speakers manage mid and lower frequencies.
  • Both Single DIN and Double DIN radio compatibility indicates flexibility in head unit replacement, which might influence speaker upgrade decisions if the audio source component requires updating alongside speaker replacements.
  • The combination of 1 inch, 5.25 inch, and 6.5 inch speakers suggests the factory system may have already employed some frequency distribution, though aftermarket components could potentially enhance separation and response characteristics.
  • Door panel speaker replacement might provide the most noticeable impact on sound quality given the 6.5 inch size typically handles critical midrange frequencies that dominate most musical content and vocal reproduction.