1991 GMC C/K Series 3500 Speaker Sizes
The 1991 GMC C/K Series 3500 speaker size chart provides factory specifications for replacement and upgrade of audio components. Information covers speaker locations in front door panel and rear door panel positions. Aftermarket audio system specifications are available for factory audio component replacement and upgrade planning in this GMC model.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Front Door Panel | 6.5 | Midbass / Full-Range |
|
| Rear Door Panel | 6.5 | Midbass / Full-Range |
|
1991 GMC C/K Series 3500 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: 0Additional Notes
- The front and rear door panel locations in the 1991 GMC C/K Series 3500 both share the same 6.5 inch speaker size, which may suggest that replacement speakers of a single size could potentially serve all four door positions.
- Both door panel positions are noted as compatible with midbass or full-range speaker types, indicating that the installer may have some flexibility in choosing between a driver focused on lower-mid frequencies or one intended to handle a wider portion of the audio spectrum.
- A full-range speaker type in these positions would likely handle highs, mids, and some low-mid frequencies without a supplemental tweeter, while a midbass driver would tend to prioritize the lower-midrange and upper-bass frequencies instead.
- Since all door positions share the same size and compatibility types, the front and rear doors could be considered roughly equal in replacement priority, though front door speakers are generally thought to contribute more to the primary listening position in most audio setups.
- The midbass type option may suggest that some owners could pair these drivers with separate tweeters to potentially achieve a more defined separation of the audio frequency range across the soundstage.