KICKER TB10 10" Weather-Proof Subwoofer Enclosure w/Passive Radiator - 4-Ohm [46CWTB104]TB10 10" Weather Proof Subwoofer Enclosure with Passive Radiator 4 Ohm Mount them nearly anywhere KICKER TB Ten Inch Tube Speakers are awesome bass makers that fit in an incredibly small space. 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