1977 Mercedes-Benz 280E Speaker Sizes

The 1977 Mercedes-Benz 280E factory audio system includes specific mounting locations that accept designated components, where the dashboard accommodates a 4 inch speaker size and the rear deck lid supports 5.25 inch units. Compatible speaker types for a system replacement and upgrade consist of midrange, midbass, and full-range units.

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

Speaker Details by Location
Location Size Type Notes
Dashboard 4 Midrange
  • Requires panel disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Deck Lid 5.25 Midbass / Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low

1977 Mercedes-Benz 280E 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

1977 Mercedes-Benz 280E 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 1977 Mercedes-Benz 280E front dashboard accommodates 4-inch midrange speakers, which typically handle vocal frequencies and instrumental midrange content with greater clarity than full-range alternatives in this aperture size.
  • Rear deck lid positions in the 1977 Mercedes-Benz 280E accept 5.25-inch speakers, with compatibility extending to both midbass drivers that emphasize lower frequency reproduction and full-range units that cover broader spectral content.
  • Aftermarket head units may integrate with the single DIN radio opening, potentially providing enhanced source quality and signal processing capabilities compared to period-original equipment.
  • The 5.25-inch rear location likely represents the primary low-frequency output for the audio system, given the absence of larger woofer positions in the specifications.
  • Midrange-specific drivers in the dashboard position could provide improved off-axis response and reduced distortion in the critical vocal frequency range when compared to undersized full-range speakers attempting broader bandwidth reproduction.