2008 Infiniti M35 Speaker Sizes

A speaker size chart for the 2008 Infiniti M35 details factory specifications for replacement and aftermarket audio components. The chart covers speaker locations throughout the vehicle, including front door panels, center dash, rear deck lid, rear door panels, and rear deck center. Information provided assists with identifying compatible aftermarket speakers for system upgrade purposes based on factory speaker specifications in each location.

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Speaker Details by Location
Location Size Type Notes
Center Dash 3.5 Full-Range
  • Requires dashboard 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 Center 8 Subwoofer
  • Requires shelf removal
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Deck Lid 3.5 Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low
Rear Door Panel 6.5 Midbass / Full-Range
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low

2008 Infiniti M35 Speaker Replacement Summary

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

Replacement difficulty:

Low: 4 Medium: 2 High: 0

Replacement priority:

High: 2 Medium: 4 Low: 0

Additional Notes

  • The 2008 Infiniti M35 features a multi-size speaker configuration with tweeters, mid-range drivers, and a dedicated subwoofer location across six distinct positions throughout the cabin.
  • Front door panels accommodate both 1-inch tweeters and 6.5-inch speakers, suggesting a component-style arrangement that separates high frequencies from midrange and bass reproduction.
  • The 6.5-inch locations in both front and rear doors accept either midbass or full-range speakers, offering flexibility between component system installations and simpler coaxial replacements.
  • Center dash and rear deck lid positions utilize 3.5-inch full-range speakers, which handle mid and high frequencies in areas where larger drivers cannot be installed.
  • An 8-inch subwoofer position exists in the rear deck center, providing dedicated low-frequency output without requiring trunk-mounted enclosures.
  • Replacing the factory 6.5-inch door speakers typically yields the most noticeable sound quality improvement, as these handle the majority of audible frequencies during listening.
  • The tweeter locations suggest that aftermarket component speaker sets with separate crossovers may integrate directly into the existing mounting points.
  • The 3.5-inch speakers generally contribute less to overall sound quality compared to the larger door-mounted drivers, though they fill acoustic gaps in the soundstage.
  • Upgrading the 8-inch subwoofer location could enhance bass response while maintaining the factory installation aesthetic and preserving trunk space.