1989 Mazda 929 Speaker Sizes

The 1989 Mazda 929 factory audio system features a dashboard that accommodates 4 inch speakers, rear door panels that support a 5.25 inch speaker size, and a rear deck lid that accepts 6x8 inch units. Available replacement and upgrade speaker types consist of midrange, midbass, and full-range options.

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

Speaker Details by Location
Location Size Type Notes
Dashboard 4 Midrange
  • Requires panel disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Deck Lid 6x8 Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low
Rear Door Panel 5.25 Midbass / Full-Range
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low

1989 Mazda 929 Speaker Replacement Summary

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

Replacement difficulty:

Low: 2 Medium: 1 High: 0

Replacement priority:

High: 0 Medium: 3 Low: 0

1989 Mazda 929 Radio Slot Size (DIN)

DIN Type Size (inch) Size (mm) Notes
Single DIN 7"×2" 180×50 Standard size for basic car radios with small display or no display
  • Always measure the slot before purchasing a new radio
  • Check slot depth - it may vary

Additional Notes

  • The 1989 Mazda 929 comes equipped with three distinct speaker locations that accommodate different sizes and functions throughout the cabin.
  • Dashboard speakers at 4 inches serve as dedicated midrange drivers, suggesting a factory audio design that separates frequency ranges across multiple positions rather than relying solely on full-range units.
  • Rear door panel locations accept 5.25 inch speakers compatible with both midbass and full-range types, offering flexibility in replacement strategies depending on whether the existing system retains dedicated midrange components or transitions to a simpler configuration.
  • The rear deck lid features 6x8 inch oval openings designed for full-range speakers, which handle broader frequency content and may serve as the primary audio source for rear passengers.
  • Replacing the dashboard midrange speakers could enhance vocal clarity and instrument separation in the front soundstage, though their smaller 4 inch size limits low-frequency extension.
  • Upgrading the rear door speakers with quality midbass drivers might improve overall bass response when paired with the existing dashboard midrange units, maintaining the separated frequency approach of the original design.
  • Aftermarket full-range speakers in the 6x8 rear deck position could provide noticeable sound quality improvements over factory units, particularly if the original components have degraded over time.
  • The single DIN radio opening supports standard aftermarket head unit replacements without requiring additional dash modifications or adapter kits beyond basic mounting hardware.
  • Speaker replacement priority might focus first on the rear deck 6x8 position, as these full-range units likely contribute the most substantial portion of overall system output for all passengers.
  • Coaxial full-range speakers in the 5.25 inch rear door locations could simplify the system while potentially providing better tonal balance than aging factory midbass drivers paired with separate midrange units.