1991 Acura NSX Speaker Sizes
The 1991 Acura NSX factory audio system features dashboard and front door panel locations that accommodate 4 inch speakers and 6.75 inch units. Compatible speaker types for a replacement upgrade include midrange, midbass, and full-range units.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Dashboard | 4 | Midrange |
|
| Front Door Panel | 6.75 | Midbass / Full-Range |
|
1991 Acura NSX Speaker Replacement Summary
2
total positions
1
easy to replace
1
high priority
0
professional only
Replacement difficulty:
Low: 1 Medium: 1 High: 0Replacement priority:
High: 1 Medium: 1 Low: 0Additional Notes
- The 1991 Acura NSX dashboard positions accommodate 4-inch midrange speakers, which are designed to reproduce middle frequency ranges rather than full-spectrum audio. This focused frequency response suggests the factory configuration likely relied on multiple speaker locations to cover the complete audio spectrum.
- Front door panel openings accept 6.75-inch speakers that can function as either midbass or full-range drivers. The dual compatibility indicates flexibility in upgrade paths, where midbass options would require additional tweeters for high-frequency reproduction, while full-range speakers attempt to cover broader frequencies from a single driver.
- The specialized 4-inch midrange units in the dashboard may be among the first replacement priorities if original speakers have deteriorated, as midrange frequencies carry much of the vocal and instrumental clarity in typical music reproduction.
- The 6.75-inch specification represents a less common size compared to standard 6.5-inch automotive speakers. This may require attention to mounting depth and diameter tolerances when selecting aftermarket replacements, as speakers marketed as 6.5-inch may not fit properly without modification.
- Replacing factory speakers with higher-quality aftermarket options in these sizes could provide noticeable improvements in tonal accuracy and dynamic range, particularly if the original paper cone drivers have suffered from age-related degradation such as foam surround deterioration or voice coil corrosion.
- The midbass option for door panel speakers would typically offer stronger low-frequency extension and impact compared to full-range alternatives, though this approach would necessitate separate high-frequency drivers to maintain treble response.