B2 is 10v3 Helix Q10W - Gs audio Romania | Facebook
АВАЛ - Car Audio & Multimedia - Trunk install we recently finished in Audi A4 with Helix Q10W subwoofer, DLS CC2, DLS CC500 and DLS CC4 amplifiers https://aval-bg.com/product/4263-subufer-helix-q10w #helix #audiotecfischer #helixq10w #customcaraudio #