Lexus GS400 Rear Deck Lid Speaker Size
The Lexus GS400 rear deck lid accommodates a 10 inch speaker size across all listed model years. Compatible types for the location include subwoofer units suited for the audio system. These specifications cover the years 1998 to 2000.
| Year | Type | Size (inch) |
|---|---|---|
| 2000 | Subwoofer | 10 |
| 1999 | Subwoofer | 10 |
| 1998 | Subwoofer | 10 |
Speaker Types
| Type | Description |
|---|---|
| Subwoofer | A large driver for the lowest bass notes, typically from about 20 Hz to 120 Hz. It is usually installed in a separate enclosure and works alongside the other speakers. |
Additional Notes
- The rear deck lid location in the Lexus GS400 accommodates a 10-inch driver, a mounting cavity large enough to support the larger basket diameter and deeper cone excursion that low-frequency reproduction requires.
- A 10-inch subwoofer operates in a frequency range typically spanning from approximately 20 Hz to 200 Hz, reproducing the lowest audible frequencies that smaller drivers in other vehicle locations cannot efficiently generate.
- The rear deck lid is a common subwoofer mounting position in sedans because the enclosed trunk volume behind the deck panel functions as a natural acoustic chamber, allowing the driver to couple with that air mass for improved bass output.
- A subwoofer is a dedicated low-frequency transducer, designed exclusively to handle bass and sub-bass content rather than mid-range or high-frequency signals.
- The 10-inch cone area in the Lexus GS400 rear deck lid produces a relatively high air displacement volume per cycle, which is directly related to the driver's capacity to reproduce low frequencies at adequate sound pressure levels within a cabin environment.
- Rear deck lid placement positions the subwoofer behind the passenger seating area, meaning low-frequency waves - which are largely omnidirectional - travel forward through the cabin without significant directional localization perceived by occupants.
- The subwoofer type designation in the specifications indicates the driver requires a dedicated low-pass filtered signal, as the speaker is not designed to reproduce the full audio spectrum.
- A 10-inch subwoofer requires a mounting depth and cutout diameter that is substantially greater than what smaller, full-range rear deck speakers demand, reflecting the physical constraints built into the GS400 deck lid opening across the 1998, 1999, and 2000 model years.