KICKER TB8 8" Weather-Proof Subwoofer Enclosure w/Passive Radiator - 4-Ohm [46CWTB84]TB8 8" Weather Proof Subwoofer Enclosure with Passive Radiator 4 Ohm Mount them nearly anywhere KICKER TB Eight Inch Tube Speakers are awesome bass makers that pound! Ultra deep and surprisingly loud, TB subs mount in your trunk or your truck with equal ease. You get the bump you want without losing the space you need. Features: Four Ohm Speaker Thick ABS Tube Construction Flexible Horizontal or Vertical Mounting System Spring Loaded Speaker Terminals