1987 Ford Mustang Speaker Sizes

The 1987 Ford Mustang factory audio system locations feature specific dimensions for sound reproduction units. The dashboard accommodates 3.5 inch speakers, and the front door panel accepts a 5.25 inch speaker size. Rear deck lid and rear door panel locations both support 6x8 inch units. Compatible speaker types for replacement and upgrade include full-range and midbass configurations.

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

Speaker Details by Location
Location Size Type Notes
Dashboard 3.5 Full-Range
  • Requires panel disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Front Door Panel 5.25 Midbass / Full-Range
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Rear Deck Lid 6x8 Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low
Rear Door Panel 6x8 Full-Range
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low

1987 Ford Mustang Speaker Replacement Summary

4 total positions
3 easy to replace
1 high priority
0 professional only

Replacement difficulty:

Low: 3 Medium: 1 High: 0

Replacement priority:

High: 1 Medium: 3 Low: 0

1987 Ford Mustang 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 factory audio system in the 1987 Ford Mustang includes four distinct speaker locations with varying size requirements that may influence replacement priority based on listening position and acoustic contribution.
  • Dashboard speakers at 3.5 inches are limited to full-range drivers, which typically handle mid and high frequencies but may lack bass response due to the small cone area and mounting location constraints.
  • Front door panel positions accommodate 5.25 inch speakers with compatibility for either midbass or full-range types, potentially offering flexibility in system configuration depending on whether a separate tweeter setup is planned.
  • Both rear deck lid and rear door panel locations utilize the same 6x8 inch oval format with full-range driver compatibility, suggesting these positions were designed to provide broader frequency coverage in the rear soundstage.
  • The larger 6x8 inch speakers in rear positions generally provide better low-frequency output compared to the smaller dashboard units, though their oval shape may present different mounting and acoustic characteristics than round drivers.
  • Upgrading front door speakers might take precedence since these positions are closer to front seat occupants and support midbass drivers that can reproduce lower frequencies more effectively than dashboard units.
  • Full-range speakers selected for any location would need to balance midrange clarity with whatever bass extension the mounting depth and enclosure volume allow, which varies considerably between dashboard, door, and deck installations.
  • The dual compatibility of front doors suggests that pairing midbass drivers with separate tweeters could create a component system, while rear positions would likely remain full-range to maintain rear fill.