2014 Kia Optima Speaker Sizes

The 2014 Kia Optima factory audio system features a center dash that accommodates a 5.25 inch speaker size, while the front door panel and rear door panel accept 6.75 inch speakers. Additionally, the rear deck center supports an 8 inch unit. Full-range, midbass, and subwoofer options function as compatible speaker types for a sound replacement or upgrade.

Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.

Speaker Details by Location
Location Size Type Notes
Center Dash 5.25 Full-Range
  • Requires dashboard disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Front Door Panel 6.75 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 6.75 Midbass / Full-Range
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low

2014 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

2014 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 2014 Kia Optima contains four distinct speaker locations with varying size specifications, suggesting a tiered approach to replacement where the rear deck subwoofer position may warrant initial attention for enhancing low-frequency output.
  • Both front and rear door panels share identical 6.75-inch specifications and accept either midbass or full-range speaker types, potentially simplifying the selection process when upgrading multiple locations simultaneously.
  • The center dash location accommodates a 5.25-inch full-range speaker, which typically handles mid and high frequencies in factory configurations without dedicated bass reproduction capabilities.
  • The rear deck center position supports an 8-inch subwoofer, indicating factory provision for dedicated low-frequency reinforcement separate from the door-mounted speakers.
  • Full-range speakers in the door panels would handle complete frequency reproduction independently, while midbass options would focus on lower-midrange frequencies and likely require the center dash speaker or additional tweeters for higher frequencies.
  • The radio accepts both single DIN and double DIN head units, which could influence aftermarket integration when coordinating speaker upgrades with source unit replacement.
  • Upgrading the 8-inch rear deck subwoofer may provide noticeable bass extension compared to door-mounted speakers, particularly if the factory unit lacks sufficient excursion or power handling capacity.