1991 Toyota Tercel Speaker Sizes

The 1991 Toyota Tercel factory audio system features front door panels that accommodate 4 inch speakers, front door panels that support 6.5 inch speakers, and a rear deck lid that accepts 6.5 inch units. Available speaker types for an audio replacement and upgrade include midrange, midbass, and full-range.

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 6.5 Midbass / Full-Range
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Front Door Panel 4 Midrange
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Rear Deck Lid 6.5 Midbass / Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low

1991 Toyota Tercel Speaker Replacement Summary

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

Replacement difficulty:

Low: 3 Medium: 0 High: 0

Replacement priority:

High: 2 Medium: 1 Low: 0

1991 Toyota Tercel 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 1991 Toyota Tercel front door panels accommodate two distinct speaker sizes, with a 4 inch midrange position and a larger 6.5 inch location that accepts either midbass or full-range drivers.
  • Rear deck lid positions are equipped with 6.5 inch openings compatible with midbass or full-range speakers, matching the larger front door size.
  • The dual front door speaker configuration suggests a factory setup that may have separated frequency ranges, with the smaller 4 inch location handling midrange frequencies while the 6.5 inch position covered lower frequencies.
  • Upgrading the 6.5 inch locations might provide more noticeable bass response improvements compared to replacing the 4 inch midrange speakers, given the larger cone area available for moving air.
  • Full-range 6.5 inch speakers could potentially handle both midrange and bass frequencies without requiring the 4 inch speakers to remain active, though component speaker systems might utilize both positions.
  • The radio head unit accepts both single DIN and double DIN sizing, offering flexibility for aftermarket stereo installations that could drive upgraded speakers more effectively.
  • Midbass drivers in the 6.5 inch positions would typically require crossover components or an external amplifier to prevent high-frequency distortion, while full-range options operate across a broader frequency spectrum.
  • The rear deck 6.5 inch speakers may contribute to overall cabin sound fill, though their placement typically provides less direct sound staging compared to front-mounted drivers.