Do Port tubes work?

[RAM_Designs 5,000+ posts]

Ported enclosure size is generally double that of a sub's sealed requirement. So unless the sealed box is grossly wrong, to the point it would sound terrible and allow the speaker to bottom out very easily, there's no way its big enough to have adequate ported volume requirements.

^^^^^^^^^^^^^^^^^ quoted for accuracy and exactly what I was wanting to say when I read the first post.