Subaru Outback Rear Door Panel Speaker Size

Additional Notes

• The Subaru Outback rear door panel speaker location positions drivers within the lower portion of the door, mounted against the interior panel trim and oriented to project sound into the rear cabin footwell and seat area.
• Door panel mounting places the speaker on a vertical or near-vertical surface, which affects the dispersion angle relative to seated rear passengers and influences how sound waves interact with the door cavity behind the cone.
• The rear door cavity behind a panel-mounted speaker functions as an acoustic enclosure, and the volume and internal structure of that cavity affect bass resonance and low-frequency extension of any installed driver.
• A 6.5 inch driver diameter falls within a range well suited to reproducing frequencies from approximately 60 Hz up to several kilohertz, allowing the speaker to cover a broad portion of the audible spectrum from the rear door position.
• The physical cone area of a 6.5 inch driver produces sufficient air displacement to reproduce midbass frequencies with meaningful output, which is relevant in a rear door location where lower-frequency content contributes to perceived cabin warmth and body in the rear listening zone.
• A midbass driver is designed to handle the lower-midrange and upper-bass frequency bands, typically operating within a crossover system where a separate tweeter handles high frequencies, making the Subaru Outback rear door panel a functional location for midbass use when paired with additional high-frequency sources elsewhere in the cabin.
• A full-range driver is built to reproduce low, mid, and high frequencies from a single cone, allowing the 6.5 inch cutout in the Subaru Outback rear door panel to serve as a standalone audio source for rear passengers without requiring supplemental tweeters at the same location.
• The 6.5 inch mounting diameter dictates the cutout size and bolt pattern required in the rear door panel, meaning aftermarket replacements must conform to 6.5 inch specifications to seat flush within the factory opening.
• Rear door panel locations generally place the speaker at a lower height relative to the ear level of seated passengers, which can affect the perceived directionality of midrange frequencies since those wavelengths are more directional than bass frequencies.
• Both compatible types listed for the rear door panel location - midbass and full-range - share the same 6.5 inch physical footprint, so the choice between the 2 types is determined by the surrounding system configuration rather than by the mounting dimensions of the location.