2014 BMW 640i Gran Coupe Speaker Sizes
Specifications for factory speaker locations in a 2014 BMW 640i Gran Coupe audio system. The speaker size chart details factory specifications for center dash, front door panel, rear door panel, and below seats positions. Information provided assists with identifying compatible aftermarket replacement speakers or planning audio system upgrades based on factory installation locations.
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| Location | Size | Type | Notes |
|---|---|---|---|
| Below Seats | 8 | Subwoofer |
|
| Center Dash | 1 | Tweeter |
|
| Center Dash | 4 | Midrange |
|
| Front Door Panel | 1 | Tweeter |
|
| Front Door Panel | 4 | Midrange |
|
| Rear Door Panel | 1 | Tweeter |
|
| Rear Door Panel | 4 | Midrange |
|
2014 BMW 640i Gran Coupe Speaker Replacement Summary
7
total positions
4
easy to replace
2
high priority
0
professional only
Replacement difficulty:
Low: 4 Medium: 3 High: 0Replacement priority:
High: 2 Medium: 5 Low: 0Additional Notes
- The 2014 BMW 640i Gran Coupe utilizes a three-way speaker configuration with dedicated tweeters, midrange drivers, and subwoofers positioned throughout the cabin to create a layered soundstage.
- Tweeters in the center dash, front door panels, and rear door panels handle high-frequency reproduction at 1 inch sizing, suggesting a factory design that separates treble duties from other frequency ranges.
- Midrange drivers measure 4 inches across all three locations where tweeters are also present, indicating paired installations that divide the frequency spectrum between high and midrange components.
- The below-seat mounting location for 8-inch subwoofers may present spatial challenges during replacement, as accessing and retrofitting components in this area typically requires seat removal or significant disassembly.
- Replacing the midrange speakers could yield noticeable improvements in vocal clarity and instrumental presence, as these 4-inch drivers handle the majority of content in music and speech.
- The 2014 BMW 640i Gran Coupe's tweeter placement in multiple zones suggests the factory system was designed with soundstage width and imaging in mind, distributing high frequencies to multiple listening positions.
- Aftermarket component sets with separate tweeters and midrange speakers would align well with this factory architecture, though matching the 4-inch midrange size may limit available options compared to more common 5.25-inch or 6.5-inch formats.
- Subwoofer upgrades might provide the most substantial bass response improvement, as the 8-inch size and under-seat location typically compromise low-frequency extension and output in factory configurations.