10" 0.70 cu ft / 12" 1 cu ft + wadding simulates a larger enclosure for deeper bass. 10" Subwoofers best advised for stealth application, 12" Is vehicle/trim dependent - ask. Flush mount subwoofer £5.
BASSER BMW 3 F31 Touring - 10 Fit-Box Subwoofer Enclosure 15L
Bundle/Kit Items
Latitude 38 August 2007 by Latitude 38 Media, LLC - Issuu
BMW 3 series, F31, Touring (2011->) subwoofer box (stealth).
Recommendations on Audio Upgrade in e46 Touring
July, 2021
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BMW 3 F31 ESTATE TOURING STEALTH SUB SPEAKER ENCLOSURE BOX SOUND BASS AUDIO