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Under floor subwoofer! : r/GolfGTI
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A4 B8.5 Avant Subwoofer tear down. | Audi-Sport.net
Subwoofer Audi A4 Avant 1.8 TFSI 16V - 8K9035382
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Sub upgrade - AudiWorld Forums
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Audizine Forums
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Audizine Forums
BASSER Audi A6 C7 Avant R - 8" Fit-Box Subwoofer Enclosure 8L
