2013 BMW 640i Gran Coupe Speaker Sizes
The 2013 BMW 640i Gran Coupe factory audio system incorporates multiple locations for sound reproduction components. Specifically, center dash, front door panel, and rear door panel locations accept 1 inch speakers, 4 inch speakers, and an 8 inch speaker size, while below seats locations accommodate 8 inch units. Compatible speaker types for a replacement upgrade consist of tweeters, midrange drivers, and subwoofers.
Specific details regarding locations, speaker sizes, and types are outlined in the compatibility chart.
| 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 |
|
2013 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 2013 BMW 640i Gran Coupe utilizes a three-way speaker configuration with dedicated tweeters, midrange drivers, and subwoofers positioned throughout the cabin for distributed sound reproduction.
- Tweeters in the center dash and both door panels maintain a consistent 1-inch size specification, suggesting a uniform high-frequency dispersion pattern across the front and rear soundstage.
- Midrange drivers follow the same placement strategy as the tweeters, with 4-inch units located in the center dash, front door panels, and rear door panels to handle vocal and instrumental frequencies.
- The 8-inch subwoofer positioned below the seats provides low-frequency reinforcement while potentially minimizing trunk space intrusion compared to traditional rear-mounted subwoofer configurations.
- Aftermarket speaker upgrades would likely focus on the 4-inch midrange positions first, as these drivers typically handle the most perceptually significant frequency range for voice clarity and musical detail.
- Component speaker systems with separate tweeters and midrange drivers may offer more precise imaging and tonal balance compared to coaxial designs, given the factory separation of frequency ranges.
- The consistent sizing across multiple speaker locations could simplify replacement procedures, as the same aftermarket models might be applicable to multiple positions within the vehicle.
- Sound improvement potential exists across all speaker positions, though the below-seat subwoofer replacement might present installation challenges due to spatial constraints and mounting requirements.