2009 Nissan Altima Speaker Sizes

The 2009 Nissan Altima speaker size chart provides factory specifications and locations for audio components throughout the vehicle. Information includes details for speakers in the dashboard, rear deck lid, front door panel, and rear door panel positions. The chart lists replacement and aftermarket upgrade options for each location within the factory audio system.

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Speaker Details by Location
Location Size Type Notes
Dashboard 3.5 Full-Range
  • 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 3.5 Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low
Rear Deck Lid 6x9 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

2009 Nissan Altima Speaker Replacement Summary

5 total positions
4 easy to replace
1 high priority
0 professional only

Replacement difficulty:

Low: 4 Medium: 1 High: 0

Replacement priority:

High: 1 Medium: 4 Low: 0

2009 Nissan Altima 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 door panel locations in the 2009 Nissan Altima accept either midbass or full-range speaker types, providing flexibility in component selection based on whether a separate tweeter system is planned.
  • Replacing the smaller dashboard and deck lid speakers with higher-quality full-range units could enhance mid-to-high frequency clarity without requiring modifications to the mounting locations.
  • The front door panels likely represent the primary sound stage, suggesting that upgrades in these positions may yield more noticeable improvements than changes to rear-facing speakers.
  • The dual speaker configuration in the rear deck lid offers options for either matching 3.5-inch pairs or utilizing the larger 6x9 oval format, which typically provides greater surface area for sound dispersion.
  • Full-range speakers in the dashboard positions would handle the entire frequency spectrum from a single driver, potentially simplifying installation compared to component systems.
  • The 6.5-inch door speakers could accommodate aftermarket midbass drivers paired with separate tweeters, allowing for a more detailed soundstage if the factory tweeter locations are retained or new ones added.
  • Both Single DIN and Double DIN radio compatibility suggests the head unit could be upgraded to models with enhanced processing features that may better drive aftermarket speakers.
  • The rear door panel speakers at 6.5 inches match the front door size, indicating consistent coverage potential throughout the cabin when upgraded speakers are installed.