Port Tube / Trunk Vent
Crutchfield Customer Review (What's this?)
I used 2 of these Port Tubes in the rear deck of my car to help the trunk breathe a little due to 2 pioneer sub. I have recently purchased 2 Alpine Type R subs from Crutchfield and I'm hoping the installation of the Port Tubes will continue to help. At this time with the Pioneer subs I have noticed a very smooth roll off with less vibration and rattles. I also did some sound dampening at the same time. I would recommend the Port Tubes for any installation.