1991 GMC Safari Speaker Sizes

Factory speaker specifications and locations for the 1991 GMC Safari. Information includes aftermarket replacement options and factory audio system details. Data covers speaker locations in the d-pillar, dashboard, and tail gate areas. Reference material for upgrade planning and aftermarket component installations.

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Speaker Details by Location
Location Size Type Notes
D-Pillar 4 Midrange
  • Extremely difficult access
  • Professional service only
  • Low replacement priority
  • Replacement difficulty: high
Dashboard 6.5 Full-Range
  • Requires panel disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Tail Gate 6.5 Midbass / Full-Range
  • Access through rear opening
  • Medium replacement priority
  • Replacement difficulty: low

1991 GMC Safari Speaker Replacement Summary

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

Replacement difficulty:

Low: 1 Medium: 1 High: 1

Replacement priority:

High: 0 Medium: 2 Low: 1

1991 GMC Safari 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 GMC Safari utilizes three distinct speaker locations with varying size requirements and functional roles within the audio system, suggesting a multi-point sound distribution design typical of this era's van configuration.
  • Dashboard positions accommodate 6.5-inch full-range speakers, which would handle the complete frequency spectrum from a frontal staging position, likely serving as the primary sound source for front occupants.
  • D-pillar locations feature smaller 4-inch speakers designated specifically for midrange frequencies, potentially supplementing the dashboard speakers by reinforcing vocal and instrumental presence from rear positions in the cabin.
  • Tail gate mounting points accept 6.5-inch speakers compatible with either midbass or full-range applications, offering flexibility in system configuration depending on whether the installer prioritizes extended cargo area coverage or low-frequency reinforcement.
  • Replacing dashboard speakers might take precedence given their full-range capability and proximity to primary seating positions, though the specific acoustic needs of the 1991 GMC Safari would depend on typical usage patterns and listening preferences.
  • The single DIN radio specification indicates a standard head unit opening, which may limit direct power output to the speakers and could influence decisions about amplification when planning speaker upgrades.
  • Midrange-specific speakers in the D-pillar positions suggest that full-range replacements at this location might not be compatible without modification, as the crossover points and frequency response characteristics differ from broader-spectrum designs.
  • The dual-purpose compatibility of tail gate speakers implies that acoustic treatment in this location could follow different installation strategies, either extending overall sound coverage throughout the cargo area or focusing on bass response enhancement.