2018 Honda Accord Speaker Sizes

The 2018 Honda Accord factory audio system contains specific factory locations for various sound units. Center dash accommodates a 3.5 inch speaker size. Front door panel and rear deck lid support 1 inch units alongside 6.5 inch units, while rear deck center accepts an 8 inch unit. Compatible speaker types for a replacement or upgrade consist of tweeters, full-range drivers, midbass units, and subwoofers.

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

Speaker Details by Location
Location Size Type Notes
Center Dash 3.5 Full-Range
  • Requires dashboard disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Front Door Panel 6.5 Midbass / Full-Range
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Front Door Panel 1 Tweeter
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Rear Deck Center 8 Subwoofer
  • Requires shelf removal
  • Medium replacement priority
  • Replacement difficulty: medium
Rear Deck Lid 1 Tweeter
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low
Rear Deck Lid 6.5 Midbass / Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low

2018 Honda Accord Speaker Replacement Summary

6 total positions
4 easy to replace
2 high priority
0 professional only

Replacement difficulty:

Low: 4 Medium: 2 High: 0

Replacement priority:

High: 2 Medium: 4 Low: 0

Additional Notes

  • The 2018 Honda Accord factory audio system incorporates a multi-way speaker configuration with dedicated frequency-specific drivers distributed across multiple locations throughout the cabin.
  • Tweeter locations in both front door panels and rear deck positions utilize 1-inch drivers, which typically handle higher frequency reproduction in the 2kHz-20kHz range.
  • The center dash position houses a 3.5-inch full-range driver that may serve as a center channel element, potentially contributing to vocal clarity and soundstage imaging.
  • Primary mid-frequency and midbass reproduction relies on 6.5-inch drivers installed in both front door panels and rear deck positions, offering compatibility with either full-range or dedicated midbass speaker types.
  • An 8-inch subwoofer location exists in the rear deck center position, suggesting factory provision for low-frequency reinforcement below typical door speaker bass response capabilities.
  • Component speaker systems could potentially utilize the existing tweeter locations paired with upgraded 6.5-inch woofers in the door panels, maintaining the factory mounting points while improving frequency separation.
  • The presence of dedicated tweeter positions indicates that factory speaker replacement might benefit more from component systems rather than coaxial designs, though coaxial speakers would still physically fit the 6.5-inch locations.
  • Sound staging possibilities might improve through strategic replacement of door panel speakers before addressing rear deck positions, given the proximity of front drivers to listening positions.
  • The factory 8-inch subwoofer location provides an option for enhanced bass output without requiring custom enclosure fabrication or trunk space sacrifice.