The Hsu subs come with port foam to seal them, and I've never heard any chuffing at all.
Chuffing happens when air velocity is too high, which is reduced with bigger ports. The ports on the HSU 15" subs are gigantic.
Having said this, in a modest living room, sealing them often results in smoother low end (16-32 Hz) response.
Chuffing happens when air velocity is too high, which is reduced with bigger ports. The ports on the HSU 15" subs are gigantic.
Having said this, in a modest living room, sealing them often results in smoother low end (16-32 Hz) response.