Sealed vs Ported Subwoofers

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.

The sealed sub absorbs the backwave of the open baffle driver. Not really a new idea.

>The sealed sub absorbs the backwave of the open baffle driver. Not really a new idea.

Not exactly.

When you add a monopole and a dipole together you get a cardioid with 4.8dB directivity (versus 0dB for a monopole) which interacts better with room modes than the monopole.

If the engineers have done their job right, their sub-woofer should become monopolar at low frequencies (you're not gaining anything below the room's fundamental resonance, and a dipole's excursion has an additional doubling for each lower octave you play) so you're not loosing low end output as you would with a dipole (that also has 4.8dB of directivity)

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