1990 Nissan 240SX Speaker Sizes
The 1990 Nissan 240SX factory audio system locations include the front door panel, which accepts a 4x6 inch speaker size, alongside the rear deck lid, which accommodates 6x9 inch units. Full-range options serve as compatible replacement and upgrade types for the vehicle.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 4x6 | Full-Range |
|
| Rear Deck Lid | 6x9 | Full-Range |
|
1990 Nissan 240SX Speaker Replacement Summary
2
total positions
2
easy to replace
1
high priority
0
professional only
Replacement difficulty:
Low: 2 Medium: 0 High: 0Replacement priority:
High: 1 Medium: 1 Low: 01990 Nissan 240SX Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN | 7"×2" | 180×50 | Standard size for basic car radios with small display or no display |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 1990 Nissan 240SX uses two distinct speaker formats, with smaller units mounted in the front door panels and larger units positioned in the rear deck lid.
- Front door panel locations accept 4x6 inch full-range speakers, which tend to prioritize vocal clarity and midrange frequency response over low-frequency output.
- Rear deck lid positions accommodate 6x9 inch full-range speakers, which typically offer broader frequency range and higher bass potential compared to the smaller front units.
- Full-range speaker designs integrate woofer and tweeter elements into single units, eliminating the need for separate crossovers or component installations in these factory locations.
- The size difference between front and rear speakers suggests the rear deck location handles more of the lower frequency reproduction in the factory audio design.
- Aftermarket speaker replacements often focus on the rear deck position first due to the larger cone area available for sound production in the 6x9 inch format.
- The single DIN radio opening provides standard dimensions for head unit replacement, allowing integration with contemporary aftermarket receivers that may drive upgraded speakers more effectively.
- Speaker upgrades in both locations would likely produce noticeable sound improvement, particularly in bass response and overall volume capability compared to aged factory units.