Folded-horn bass bin

Folding the bass horn inside the box is the principle behind the reggae scoop.

Roots-dub rigs such as Aba Shanti-I rely on folded-horn bass for their heavy low end.

The W-bin is a double-folded horn variant of the folded bass cabinet.

Horn loading trades size for efficiency against direct-radiator boxes.

The scoop is a rear-loaded folded-horn design.

The exponential flare is the horn geometry used in folded bass bins and mid horns.

Folded horns let bass project many metres across an open lawn.