2017 BMW Alpina B6 xDrive Gran Coupe Speaker Sizes

The 2017 BMW Alpina B6 xDrive Gran Coupe factory audio system features center dash, front door panel, rear deck lid, and rear door panel locations that accommodate 1 inch speakers and 4 inch units, while below seats locations accept an 8 inch speaker size. Compatible speaker types for a system replacement and audio upgrade include tweeters, midrange units, and subwoofers.

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	1	Tweeter	Requires dashboard disassembly Medium replacement priority Replacement difficulty: medium
Center Dash	4	Midrange	Requires dashboard disassembly Medium replacement priority Replacement difficulty: medium
Front Door Panel	1	Tweeter	Standard installation High replacement priority Replacement difficulty: low
Front Door Panel	4	Midrange	Standard installation High replacement priority Replacement difficulty: low
Rear Deck Lid	1	Tweeter	Access through trunk Medium replacement priority Replacement difficulty: low
Rear Deck Lid	4	Midrange	Access through trunk Medium replacement priority Replacement difficulty: low
Rear Door Panel	1	Tweeter	Standard installation Medium replacement priority Replacement difficulty: low
Rear Door Panel	4	Midrange	Standard installation Medium replacement priority Replacement difficulty: low

2017 BMW Alpina B6 xDrive Gran Coupe Speaker Replacement Summary

9 total positions

6 easy to replace

2 high priority

0 professional only

Replacement difficulty:

Low: 6 Medium: 3 High: 0

Replacement priority:

High: 2 Medium: 7 Low: 0

Additional Notes

The 2017 BMW Alpina B6 xDrive Gran Coupe utilizes a three-way speaker configuration with tweeters, midrange drivers, and subwoofers distributed across multiple locations throughout the cabin.
Tweeters measuring 1 inch are positioned in four distinct locations: the center dash, front door panels, rear deck lid, and rear door panels, suggesting a focus on high-frequency sound dispersion.
Midrange speakers at 4 inches occupy the same four locations as the tweeters, indicating a component-style setup where different frequency ranges are handled by dedicated drivers in close proximity.
An 8 inch subwoofer located below the seats handles low-frequency reproduction, which may be positioned centrally or in paired configurations depending on the factory audio system specification.
Upgrading the tweeters and midrange speakers could potentially enhance vocal clarity and instrumental detail, as these frequencies tend to benefit most noticeably from higher-quality components.
The subwoofer location beneath the seats may present installation considerations when replacing, as access and mounting depth could vary compared to traditional trunk or door-mounted bass drivers.
Replacing speakers in multiple locations simultaneously might provide more cohesive sonic improvements than upgrading individual positions, given the distributed nature of the frequency ranges across the cabin.