Subaru Legacy Front Door Panel Speaker Size

Additional Notes

• The front door panel is a structural cavity location, meaning the speaker mounts within the inner door skin, which acts as an enclosure wall on one side while the door's air volume forms a loosely sealed chamber behind the cone.
• Door panel installations place the speaker at approximately seated ear height and angled toward the listening position, which affects the directional projection of mid and upper frequencies toward the occupants.
• The Subaru Legacy front door panel accepts a 6.5 inch diameter speaker across all listed model years, a size whose cone area supports meaningful low-midrange displacement while still fitting within the spatial constraints of a door skin cutout.
• A 6.5 inch driver in a door cavity can reproduce frequencies roughly from the upper bass region, around 60-80 Hz, through the midrange up to several kilohertz, depending on the driver's construction and crossover configuration.
• The door cavity behind a 6.5 inch cone is not a sealed or ported enclosure in the traditional sense, so low-frequency output is partially supported by the door volume and partially attenuated by acoustic leakage through door seams and panel gaps.
• Midbass is one of the 2 compatible types listed for the Subaru Legacy front door panel, and a midbass driver is specifically engineered to handle the lower-midrange and upper-bass frequency band, typically crossing over to a subwoofer below and a midrange or tweeter above.
• In a door panel location, a midbass speaker handles the frequency content most associated with the body and weight of vocals, lower stringed instruments, and kick drum punch, frequencies that benefit from the larger cone area of a 6.5 inch driver.
• Full-range is the second compatible type listed for the front door panel location, and a full-range driver is designed to reproduce a wider portion of the audible spectrum from a single cone, reducing the need for additional speakers in the same location.
• A 6.5 inch full-range driver in a front door panel position attempts to cover bass, midrange, and treble from a single point source, though high-frequency dispersion from a cone of that diameter becomes increasingly directional as frequency rises.
• The front door panel location positions the speaker close to the occupant's lower body, which means high-frequency output from a full-range 6.5 inch driver may not align directly with ear level, affecting perceived treble clarity without supplemental tweeters.
• Because the specifications list both midbass and full-range as compatible types, the 6.5 inch mounting cutout in the Subaru Legacy front door panel is dimensionally suited to accommodate the basket and magnet geometries common to both driver categories at that diameter.
• Mounting depth is a relevant consideration for front door panel installations, as the inner door structure has limited clearance between the speaker's rear magnet assembly and window regulator mechanisms or door hardware within the door cavity.