1985 Ford F-350 Speaker Sizes
The 1985 Ford F-350 speaker size chart provides factory specifications and locations for replacement or aftermarket speakers. Information includes data for front door panel and rear door panel positions. Details cover dimensions and configurations for upgrading the audio system with compatible aftermarket speakers that match original factory installations.
As an Amazon Associate, we may earn a commission from purchases made through links marked. Read more in our disclaimer.
| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Door Panel | 6x9 | Full-Range |
|
1985 Ford F-350 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: 01985 Ford F-350 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 1985 Ford F-350 front door panels accept 6.5 inch speakers, which can accommodate either midbass or full-range driver configurations depending on whether the installation is part of a component system or a standalone replacement.
- Rear door panels in this vehicle utilize 6x9 inch full-range speakers, a format that typically provides extended frequency response due to its larger cone surface area compared to smaller round drivers.
- Replacing factory speakers with aftermarket units often addresses deterioration in the original paper cone material and foam surrounds, conditions commonly observed in vehicles from this production era.
- Full-range speakers handle the entire audible frequency spectrum through a single driver unit, while midbass speakers focus on mid and low frequencies and generally require separate tweeters for high-frequency reproduction.
- The 6x9 inch oval format in the rear locations allows for greater cone excursion potential within typical door panel constraints, which may contribute to increased bass output compared to round speaker designs of equivalent mounting depth.
- Both single DIN and double DIN radio chassis fit the 1985 Ford F-350 dashboard opening, providing flexibility for head unit upgrades that can deliver increased power output to drive aftermarket speakers more effectively than original equipment amplification.
- Component speaker systems using the front 6.5 inch positions for midbass drivers typically include separate tweeters mounted elsewhere in the door or dashboard, creating a wider soundstage through physical separation of high and low frequency sources.
- Aftermarket speakers in these size categories often feature polypropylene or treated textile cones with rubber surrounds, materials that demonstrate greater resistance to environmental degradation than the compounds used in original factory installations.