1990 GMC P3500 Speaker Sizes
The 1990 GMC P3500 speaker size chart provides factory specifications for OEM audio components installed in front door panel and rear door panel locations. Information covers replacement speaker sizes suitable for aftermarket upgrades to the original factory system. Data includes standard specifications to assist with identifying compatible aftermarket audio components.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Door Panel | 6.5 | Midbass / Full-Range |
|
1990 GMC P3500 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 GMC P3500 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 GMC P3500 accommodates 6.5-inch speakers in both front and rear door panels, offering flexibility in replacement options. These locations accept either midbass drivers or full-range speakers, allowing for different audio system configurations depending on the desired sound characteristics and whether a separate tweeter installation is planned.
- Midbass speakers typically focus on reproducing mid-frequency and low-frequency content, which may require pairing with separate tweeters for high-frequency reproduction. Full-range speakers attempt to cover the entire frequency spectrum within a single driver, potentially simplifying installation but sometimes compromising performance at frequency extremes compared to component systems.
- The door panel locations generally provide better acoustic performance than dash-mounted speakers, as the larger mounting surface area can support improved bass response. The 6.5-inch size represents a common aftermarket format, which tends to offer wider selection and potentially better value compared to less common sizes.
- Replacing factory speakers in these positions could address common issues such as worn surrounds, deteriorated voice coils, or general age-related decline in sensitivity. The single DIN radio opening allows for aftermarket head unit upgrades that might provide additional power output or signal processing capabilities to drive replacement speakers more effectively.
- The identical sizing between front and rear positions may simplify parts acquisition and installation, though some listeners prefer different speaker types in different positions to create specific soundstage characteristics. The midbass/full-range compatibility suggests adequate mounting depth for various speaker designs within these 6.5-inch format options.