1991 Subaru Legacy Speaker Sizes

The 1991 Subaru Legacy factory audio system features front door panels and a rear deck lid that accommodate 6.5 inch speakers. Midbass and full-range units serve as compatible speaker types for an audio replacement upgrade.

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
Rear Deck Lid 6.5 Midbass / Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low

1991 Subaru Legacy Speaker Replacement Summary

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

Replacement difficulty:

Low: 2 Medium: 0 High: 0

Replacement priority:

High: 1 Medium: 1 Low: 0

1991 Subaru Legacy 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 1991 Subaru Legacy uses uniform 6.5 inch speaker positions in both front door panels and rear deck lid locations, which may simplify replacement part selection when upgrading multiple positions simultaneously.
  • Both front and rear positions accept either midbass or full-range speaker types, suggesting flexibility in system configuration depending on whether a separate tweeter setup is planned or if full-range drivers will handle the entire frequency spectrum.
  • Full-range speakers in these positions would handle treble through bass frequencies from a single cone, while midbass drivers would typically require separate tweeters or coaxial designs to reproduce higher frequencies adequately.
  • The single DIN radio opening provides standard aftermarket head unit compatibility, though the limited chassis depth typical of this radio format may affect feature availability in replacement units.
  • Replacing factory speakers with aftermarket 6.5 inch components could address common degradation issues like torn surrounds or weakened voice coils that develop in speakers from this production period.
  • The door panel speakers generally receive priority in replacement strategies since they position closer to occupants and contribute more directly to stereo imaging than rear deck installations.
  • Aftermarket speakers with higher sensitivity ratings than factory units may produce noticeably increased output levels even when powered by the existing head unit without additional amplification.