1991 Lexus LS400 Speaker Sizes
The 1991 Lexus LS400 speaker size chart provides factory audio specifications for replacement or aftermarket upgrade purposes. Information covers locations including front door panel, rear door panel, and center console positions. Data identifies original equipment sizes installed in the factory sound system to assist with aftermarket speaker compatibility and installation planning.
As an Amazon Associate, we may earn a commission from purchases made through links marked. Read more in our disclaimer.
| Location | Size | Type | Notes |
|---|---|---|---|
| Center Console | 8 | Subwoofer |
|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Door Panel | 6.5 | Midbass / Full-Range |
|
1991 Lexus LS400 Speaker Replacement Summary
3
total positions
2
easy to replace
1
high priority
0
professional only
Replacement difficulty:
Low: 2 Medium: 1 High: 0Replacement priority:
High: 1 Medium: 2 Low: 01991 Lexus LS400 Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Double DIN | 7"×4" | 180×100 | Double size for modern multimedia systems with large touchscreens |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 1991 Lexus LS400 features factory speaker locations in both front and rear door panels that accept 6.5 inch drivers, offering options for either midbass or full-range configurations depending on system design preferences.
- Door panel speakers typically serve as the primary sound stage in this configuration, where full-range units would handle broad frequency reproduction while midbass drivers would focus on lower midrange frequencies when paired with separate tweeters.
- The center console houses an 8 inch subwoofer location, which represents an uncommon factory placement compared to typical trunk-mounted configurations, potentially providing more direct low-frequency output to the cabin.
- This center console subwoofer position in the 1991 Lexus LS400 may offer certain advantages for bass response distribution, though the 8 inch size suggests modest low-frequency extension compared to larger diameter alternatives.
- Replacement speakers for the door positions would need to maintain the 6.5 inch form factor, with installation depth and mounting requirements varying between midbass and full-range designs based on magnet structure and basket geometry.
- The double DIN radio opening provides adequate space for aftermarket head units with advanced features, which could support upgraded speaker components through enhanced crossover controls and signal processing capabilities.
- Component speaker systems using the door locations might utilize midbass drivers at 6.5 inches paired with separately mounted tweeters, potentially offering improved frequency separation over single full-range units in the same positions.
- Sound quality improvements would likely depend on both speaker selection and proper integration with the existing acoustics, where factory mounting locations may benefit from sound deadening treatments during speaker replacement procedures.