2018 Buick Regal Speaker Sizes

The 2018 Buick Regal speaker size chart provides factory speaker specifications and locations for replacement or aftermarket audio system upgrades. Information covers front door panel speakers, center dash speakers, rear door panel speakers, and rear deck lid speakers. Each location includes details on factory speaker configurations to assist with audio component replacement and system modifications.

As an Amazon Associate, we may earn a commission from purchases made through links marked. Read more in our disclaimer.

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 1 Tweeter
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Front Door Panel 6.5 Midbass / Full-Range
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Rear Deck Lid 6x9 Full-Range
  • Access through trunk
  • Medium replacement priority
  • Replacement difficulty: low
Rear Door Panel 6.5 Midbass / Full-Range
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low

2018 Buick Regal Speaker Replacement Summary

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

Replacement difficulty:

Low: 4 Medium: 1 High: 0

Replacement priority:

High: 2 Medium: 3 Low: 0

Additional Notes

  • The 2018 Buick Regal factory audio system incorporates a tweeter configuration in the front door panels, which could suggest a focus on high-frequency reproduction in the original design. Replacing these 1-inch units with aftermarket tweeters may enhance clarity in the upper frequency range.
  • A dedicated center dash speaker at 3.5 inches typically handles full-range duties, potentially contributing to vocal clarity and center-stage imaging. Upgrading this position might improve dialogue definition and overall soundstage coherence.
  • Both front and rear door panels accommodate 6.5-inch speakers with midbass or full-range capabilities, indicating these locations likely serve as the primary sound sources for midrange and lower frequencies. Attention to these positions during upgrades could yield noticeable improvements in overall tonal balance.
  • The rear deck lid features 6x9-inch full-range speakers, which generally offer greater cone area compared to round 6.5-inch drivers. This configuration may provide extended low-frequency response in the rear soundstage, though replacement priority might favor front-stage speakers for more immediate listening impact.
  • The presence of separate tweeters and midbass drivers in the front doors suggests a component-style approach may have been employed in the factory system. Aftermarket component sets could potentially integrate more seamlessly than coaxial speakers in these locations.
  • With five distinct speaker locations specified, the system architecture indicates a multi-speaker layout that could benefit from staged upgrades rather than simultaneous replacement, allowing assessment of each position's contribution to the overall sound quality.