2018 Ram 3500 Speaker Sizes

The 2018 Ram 3500 factory audio system features specific mounting locations for various drivers. Center dash and dashboard accommodate 3.5 inch units, while front door panel and rear door panel support 6x9 inch units. Rear roof accepts a 2.5 inch speaker size, and below seats accepts an 8 inch speaker size. Compatible speaker types for a replacement and upgrade project include midrange, full-range, and subwoofer components.

Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.

Speaker Details by Location
Location Size Type Notes
Below Seats 8 Subwoofer
  • Very limited height clearance
  • Medium replacement priority
  • Replacement difficulty: medium
Center Dash 3.5 Full-Range
  • Requires dashboard disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Dashboard 3.5 Full-Range
  • Requires panel disassembly
  • Medium replacement priority
  • Replacement difficulty: medium
Front Door Panel 6x9 Full-Range
  • Standard installation
  • High replacement priority
  • Replacement difficulty: low
Rear Door Panel 6x9 Full-Range
  • Standard installation
  • Medium replacement priority
  • Replacement difficulty: low
Rear Roof 2.5 Midrange
  • Requires headliner removal
  • Professional service only
  • Low replacement priority
  • Replacement difficulty: high

2018 Ram 3500 Speaker Replacement Summary

6 total positions
2 easy to replace
1 high priority
1 professional only

Replacement difficulty:

Low: 2 Medium: 3 High: 1

Replacement priority:

High: 1 Medium: 4 Low: 1

2018 Ram 3500 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 3500 uses a variety of speaker sizes across different locations, with 6x9 inch full-range speakers installed in both front and door panels, suggesting these may be the primary sound sources for passengers.
  • Full-range speakers occupy four of the six speaker locations in this truck, including the dashboard, center dash, and both door panel positions, indicating a design approach that emphasizes complete frequency coverage in most positions.
  • The rear roof position houses a 2.5 inch midrange speaker, which typically handles middle frequencies rather than the complete audio spectrum like the full-range units found elsewhere.
  • An 8 inch subwoofer location exists below the seats, providing dedicated low-frequency reproduction separate from the full-range speakers handling mid and high frequencies.
  • The door panels accommodate the largest speakers in the system at 6x9 inches, which may offer greater bass response and overall output compared to the smaller dashboard and roof-mounted units.
  • The 3.5 inch full-range speakers in the dashboard and center dash positions handle complete frequency ranges despite their smaller size, though they likely focus more on mid and high frequencies in practical terms.
  • Replacing the door panel speakers might provide the most noticeable sonic improvement given their size and proximity to occupants, while the subwoofer below the seats could enhance low-frequency performance if that's a priority.
  • The radio supports both single DIN and double DIN head units, allowing flexibility for aftermarket audio system upgrades without requiring custom modifications to the dash.