2018 Ram 2500 Speaker Sizes
The 2018 Ram 2500 factory audio system features specific mounting locations that accommodate designated components. Center dash and dashboard locations accept 3.5 inch speakers, front door panel and rear door panel locations support 6x9 inch units, the rear roof accepts a 2.5 inch speaker, and the location below seats accommodates an 8 inch speaker size. Available compatible speaker types for replacement and upgrade include midrange, full-range, and subwoofer.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| Location | Size | Type | Notes |
|---|---|---|---|
| Below Seats | 8 | Subwoofer |
|
| Center Dash | 3.5 | Full-Range |
|
| Dashboard | 3.5 | Full-Range |
|
| Front Door Panel | 6x9 | Full-Range |
|
| Rear Door Panel | 6x9 | Full-Range |
|
| Rear Roof | 2.5 | Midrange |
|
2018 Ram 2500 Speaker Replacement Summary
6
total positions
2
easy to replace
1
high priority
1
professional only
Replacement difficulty:
Low: 2 Medium: 3 High: 1Replacement priority:
High: 1 Medium: 4 Low: 12018 Ram 2500 Radio Slot Size (DIN)
| DIN Type | Size (inch) | Size (mm) | Notes |
|---|---|---|---|
| Single DIN or Double DIN | 7"×2" or 7"×4" | 180×50 or 180×100 | Vehicle supports both radio sizes |
- Always measure the slot before purchasing a new radio
- Check slot depth - it may vary
Additional Notes
- The 2018 Ram 2500 factory audio system includes six distinct speaker locations, with sizes ranging from 2.5-inch units in the rear roof to 8-inch subwoofers positioned below the seats.
- Full-range speakers dominate the configuration, installed in the center dash, dashboard, and both front and rear door panels, suggesting a design approach that relies on these units to reproduce the entire audible frequency spectrum rather than separating frequency ranges across dedicated components.
- The 6x9-inch oval speakers in both front and rear door panels likely handle the majority of midrange and bass frequencies in the stock setup, as this format typically provides greater cone area than round speakers of similar mounting depth.
- A dedicated 2.5-inch midrange driver in the rear roof position indicates some attempt at sound staging or ambient fill, though the small size limits its effective frequency range compared to the larger door-mounted units.
- The inclusion of an 8-inch subwoofer below the seats suggests the factory system addresses lower bass frequencies separately, which may reduce the bass burden on the door and dash speakers and potentially improve overall clarity in the midrange.
- Replacement priorities might logically start with the 6x9-inch door speakers, as these locations typically offer the most significant impact on overall sound quality due to their size, proximity to listeners, and ability to handle substantial power.
- The 3.5-inch full-range units in the dash and center dash positions may contribute primarily to vocal and upper-midrange frequencies, though their small cone area inherently limits low-frequency output and maximum volume capability.
- Upgrading the under-seat subwoofer could enhance low-frequency extension and impact, particularly if the replacement unit features higher power handling or greater excursion capability than the stock 8-inch driver.
- The single DIN and double DIN radio compatibility provides flexibility for head unit upgrades, which could serve as the foundation for improved amplification and signal processing before addressing individual speakers.
- Aftermarket component speaker systems in the 6x9-inch door locations would separate tweeter and woofer duties, potentially offering improved imaging and frequency response compared to the factory full-range configuration.