Sealed vs Ported Subwoofers

Yeah, what Drew said! Please don't throw a wet blanket on me unless I'm on fire.

I agree, in general, with Shadorne -and- Gmuffley. Box size is another factor to consider. Using the same size box, you will get deeper extension and higher output with a ported design. The sealed box will give you a flatter and more gradual roll off. Recent sealed subwoofer designs use smaller boxes with very powerful amplifiers with compensation to achieve better output and extension. Some have been very popular. My old ported 12" Mirage(Energy) would shake the walls in a way my sealed 10" Parts Express Titanic subs will not. Ultimately, the sealed subs work better in my room.

Tekton has a neat looking design that is quite novel. Its a sealed sub with a second driver on an open baffle on pillars a few inches directly in front of the other driver. They move in tandem, but not isobaric because there is no sealed airspace between them. Looks very interesting.