Inside Ø: Ø 66 mm Outside Ø: Ø 76 mm Length: 128-245 mm Order no.: 0120930 MBR-70 Bass-reflex tube, SV=34.2 cm2
Inside Ø: Ø 75 mm Outside Ø: Ø 80 mm Length: 114 mm Order no.: 0126650 MBR-75 Bass-reflex tube, SV=44.2 cm2
