2017 Kia Optima Speaker Sizes

The 2017 Kia Optima speaker size chart provides factory audio specifications for replacement or aftermarket upgrade purposes. Information includes speaker locations in the dashboard, front door panel, rear door panel, and rear deck center positions. Data details factory specifications to assist with aftermarket component compatibility for audio system modifications.

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Speaker Details by Location
Location Size Type Notes
Dashboard 2.75 Midrange
  • 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 Center 8 Subwoofer
  • Requires shelf removal
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Door Panel 6.5 Midbass / Full-Range
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low

2017 Kia Optima Speaker Replacement Summary

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

Replacement difficulty:

Low: 2 Medium: 2 High: 0

Replacement priority:

High: 1 Medium: 3 Low: 0

2017 Kia Optima 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 2017 Kia Optima features a four-location speaker configuration with dashboard tweeters complementing larger door-mounted drivers and a factory subwoofer position in the rear deck.
  • Dashboard locations accommodate 2.75-inch midrange drivers, which typically handle vocal frequencies and upper-midrange content in the factory audio staging.
  • Both front and rear door panels utilize 6.5-inch mounting positions compatible with either midbass or full-range speakers, providing flexibility in component selection based on whether the system retains or removes the dashboard midrange drivers.
  • The rear deck center position accepts an 8-inch subwoofer, suggesting the factory system may include dedicated low-frequency reinforcement or at minimum provides a mounting location for aftermarket bass enhancement.
  • Upgrading the front door speakers would likely yield the most noticeable improvement in overall sound quality, as these locations handle the majority of musical content and sit closest to front-seat occupants.
  • Component speaker systems designed for 6.5-inch door installations could utilize the existing dashboard midrange location as a tweeter mounting point, potentially simplifying installation compared to typical A-pillar or sail panel tweeter placement.
  • The rear deck subwoofer location may require depth clearance verification, as 8-inch subwoofers vary considerably in mounting depth depending on enclosure type and magnet structure.
  • Aftermarket head units remain an option with both single DIN and double DIN radio compatibility, allowing installation of either compact or touchscreen receiver styles without dashboard modification.