2004 Infiniti I35 Speaker Sizes

The 2004 Infiniti I35 speaker size chart provides factory speaker specifications and locations for aftermarket replacement or audio system upgrade. Information covers front door panel, rear door panel, and rear deck lid speaker positions with corresponding dimensions for each location. Reference data assists in identifying compatible aftermarket speakers that match original factory specifications when upgrading the I35 audio system.

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Speaker Details by Location
Location Size Type Notes
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 8 Woofer
  • 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

2004 Infiniti I35 Speaker Replacement Summary

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

Replacement difficulty:

Low: 4 Medium: 0 High: 0

Replacement priority:

High: 2 Medium: 2 Low: 0

2004 Infiniti I35 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 2004 Infiniti I35 incorporates a dual-speaker configuration in the front door panels, with a 1-inch tweeter handling high frequencies and a 6.5-inch midbass or full-range driver managing mid and lower frequencies.
  • Rear door panel speakers in this vehicle utilize 6.5-inch midbass or full-range drivers, matching the front door woofer size to potentially provide balanced sound distribution throughout the cabin.
  • The rear deck lid accommodates 8-inch woofers, which may contribute additional bass response compared to the smaller door-mounted drivers.
  • Component speaker systems with separate tweeters and woofers could be considered for the front doors given the existing 1-inch tweeter location alongside the 6.5-inch driver position.
  • Aftermarket speaker replacement in the 2004 Infiniti I35 may prioritize the front door 6.5-inch positions and rear deck 8-inch locations, as these larger drivers typically handle the majority of audible frequency output.
  • The radio opening accepts both single DIN and double DIN head units, which may allow flexibility when pairing aftermarket receivers with upgraded speakers.
  • The combination of dedicated tweeters, mid-sized door speakers, and larger rear deck woofers suggests a three-way sound system design across the frequency spectrum.
  • Midbass drivers in the 6.5-inch positions could provide vocal clarity and instrumental detail, while the 8-inch rear woofers may handle lower frequency reinforcement.