1984 GMC S15 Speaker Sizes

The 1984 GMC S15 factory audio system features dashboard and rear door panel locations that accommodate 4x6 inch and 6x9 inch speakers respectively, establishing a baseline 4x6 inch speaker size. Full-range replacement and upgrade units serve as the compatible speaker types for the vehicle.

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

Speaker Details by Location
Location Size Type Notes
Dashboard 4x6 Full-Range
  • Requires panel disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Door Panel 6x9 Full-Range
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low

1984 GMC S15 Speaker Replacement Summary

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

Replacement difficulty:

Low: 1 Medium: 1 High: 0

Replacement priority:

High: 0 Medium: 2 Low: 0

1984 GMC S15 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 dashboard speakers in the 1984 GMC S15 utilize a 4x6 inch rectangular configuration, which was typical for factory installations in compact trucks during this era.
  • Full-range speakers appear suitable for the dashboard location, suggesting a single-driver solution handles the frequency spectrum without separate tweeters or woofers.
  • The rear door panels accommodate larger 6x9 inch speakers, providing increased cone area compared to the dashboard positions for potentially greater bass output.
  • Replacing the factory dashboard speakers might be prioritized for vocal clarity improvement, as the 4x6 size generally focuses on midrange reproduction.
  • The rear door panel speakers could benefit from aftermarket upgrades given their larger size, as full-range 6x9 speakers often incorporate multiple voice coils or whizzer cones for extended high-frequency response.
  • The single DIN radio opening indicates a standardized head unit size, which may limit built-in amplification power available to drive replacement speakers.
  • Sound staging in this configuration would likely position most audio content toward the front of the cabin, with the dashboard speakers handling primary listening duties.
  • The combination of 4x6 and 6x9 speakers suggests an asymmetrical power distribution, where rear speakers might handle lower frequencies more effectively than the smaller dashboard units.