Mercury Colony Park Rear Door Panel Speaker Size
The Mercury Colony Park rear door panel accommodates a 6.5 inch speaker size. Compatible types for the location include midbass and full-range units. These specifications cover the 1990 to 1991 model years.
| Year | Type | Size (inch) |
|---|---|---|
| 1991 | Midbass / Full-Range | 6.5 |
| 1990 | Midbass / Full-Range | 6.5 |
Speaker Types
| Type | Description |
|---|---|
| Midbass | A driver tuned for upper bass and lower midrange, roughly from 80 Hz to 500 Hz. It has longer cone travel than a full-range unit, which supports stronger bass in doors and panels. |
| Full-Range | A single driver that reproduces bass through treble without a separate crossover network. It is the simplest replacement option and is common in factory audio systems. |
Additional Notes
- The rear door panel location in the 1991 and 1990 Mercury Colony Park accommodates a 6.5-inch speaker cutout, a mid-sized diameter that fits within the structural constraints typical of full-size station wagon rear door cavities.
- Door panel installations are surface-mounted to the inner door skin, meaning the speaker depth and basket clearance must account for window mechanisms and door internals behind the mounting plane.
- A 6.5-inch driver occupies a middle ground in cone surface area, producing enough pistonic displacement to reproduce both upper bass and lower midrange frequencies effectively from a door-mounted position.
- The rear door placement in a station wagon positions the speaker toward the rear passenger zone, a location that typically requires the driver to handle a broad frequency range without dedicated subwoofer support nearby.
- Midbass drivers in a 6.5-inch format at the rear door of the Mercury Colony Park are oriented toward reproducing frequencies roughly between 80 Hz and 500 Hz, reinforcing the lower vocal and instrumental body within the cabin.
- Full-range drivers of 6.5 inches handle frequencies from the upper bass region through the presence range, typically spanning approximately 60 Hz to 20 kHz, making them capable of operating as a standalone speaker without additional components in the rear door.
- The rear door panel position places the speaker at roughly seat-height for rear passengers, creating a nearfield listening condition for occupants seated adjacent to the door.
- A midbass driver type relies on its cone mass and suspension to prioritize low-to-mid frequency reproduction, intentionally rolling off the upper frequencies where a tweeter or separate driver would take over.
- Full-range drivers incorporate a whizzer cone or other high-frequency extension mechanism within the same driver assembly, allowing a single 6.5-inch unit to cover the audible spectrum without a crossover network.
- The door panel mounting surface in a rear door installation is typically a flat or slightly contoured trim panel, which determines the speaker grille geometry and the degree to which the driver fires directly into the cabin versus at an angle.