Alpine 12” Type X-Series Ported Bass Package Includes one Alpine X-W12D4 12” subwoofer, and 2.00 ft³ optimized ported enclosure
Subwoofer per auto 12 "30 cm ALPINE X-W12D4 suono elettronica colonne 84.3dB subwoofer per auto acustica auto audio parti componenti altoparlante - AliExpress
Alpine R-W12D4 Subwoofers da 12
Alpine X-W10D4 - Özen Hifi
Alpine X-w12d4 – 30 cm Subwoofer : Amazon.it: Elettronica