2009 Mazda RX-8 Speaker Sizes

The 2009 Mazda RX-8 factory audio system locations include front door panel and rear deck lid locations which accept 1 inch speakers, while the front door panel and rear deck lid also accommodate 6x8 inch and 6x9 inch units respectively, and the rear location accepts a 6x9 inch speaker size. Compatible speaker types for a sound system replacement or upgrade include tweeters and full-range units.

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

Speaker Details by Location
Location Size Type Notes
Front Door Panel 1 Tweeter
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Front Door Panel 6x8 Full-Range
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Rear 6x9 Full-Range
  • Secondary sound location
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Deck Lid 1 Tweeter
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low
Rear Deck Lid 6x9 Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low

2009 Mazda RX-8 Speaker Replacement Summary

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

Replacement difficulty:

Low: 4 Medium: 1 High: 0

Replacement priority:

High: 2 Medium: 3 Low: 0

2009 Mazda RX-8 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 2009 Mazda RX-8 features a factory audio configuration that separates high-frequency and mid-to-low frequency reproduction through dedicated speaker positions, with 1-inch tweeters handling treble response in both front door panels and rear deck locations.
  • Replacement opportunities exist across multiple locations, as the factory setup includes 6x8-inch full-range speakers in the front door panels, while the rear positions accommodate larger 6x9-inch full-range units in both standard rear locations and the deck lid area.
  • Component speaker systems could integrate with the existing tweeter locations, though installers would need to account for the 1-inch mounting points when selecting aftermarket high-frequency drivers.
  • The 6x8-inch front door specification represents a less common format compared to standard 6.5-inch or 6x9-inch sizes, which may influence the range of direct-fit replacement options available from aftermarket manufacturers.
  • Audio staging could potentially shift forward or backward depending on which full-range positions receive upgrades first, given the distribution of three separate 6x9-inch locations across the rear soundstage versus two smaller 6x8-inch positions up front.
  • The dashboard radio cavity accepts both single DIN and double DIN head units, providing flexibility for source unit upgrades that might drive higher-quality aftermarket speakers.
  • Sound quality improvements might prioritize the front door panel speakers since they typically provide primary midrange and midbass content for front-seat occupants, though the multiple rear positions suggest the factory system emphasized rear-seat coverage as well.