2011 BMW Alpina B7 Speaker Sizes

The 2011 BMW Alpina B7 factory audio system integrates multiple locations, where center dash, front door panel, and rear deck lid accommodate 1 inch speakers alongside a 4 inch speaker size, while below seats supports 8 inch units. Available speaker types for replacement and 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

2011 BMW Alpina B7 Speaker Replacement Summary

7 total positions

4 easy to replace

2 high priority

0 professional only

Replacement difficulty:

Low: 4 Medium: 3 High: 0

Replacement priority:

High: 2 Medium: 5 Low: 0

Additional Notes

The 2011 BMW Alpina B7 utilizes a three-way speaker configuration with separate tweeters, midrange drivers, and subwoofers distributed across multiple cabin locations.
Tweeters measuring 1 inch are positioned in three distinct areas: the center dash, front door panels, and rear deck lid, suggesting a focus on high-frequency sound dispersion throughout the interior.
Midrange speakers at 4 inches occupy the same three locations as the tweeters, likely working in tandem to handle mid-frequency reproduction.
The below-seat placement of 8-inch subwoofers may provide low-frequency output while conserving visible cabin space and potentially reducing interference with passenger comfort.
Replacement efforts might prioritize the midrange drivers and tweeters in the front door panels and center dash, as these positions typically contribute most directly to the primary listening area.
The matching sizes across all tweeter locations and all midrange locations could simplify the replacement process when sourcing aftermarket components.
Component speakers that separate tweeters from midrange drivers would align with this factory configuration, potentially allowing for targeted upgrades to specific frequency ranges.
Sound staging might benefit from the elevated tweeter positions in the dash and deck lid, which can enhance spatial clarity in audio reproduction.