Patent ID: 8989419
Filing Date: 2015-03-24
Classification: H04R

Abstract:
1. A phase plug comprising: a body having a longitudinal axis and a latitudinal perimeter which is symmetric about the longitudinal axis; an upstream surface to the body which conforms in shape with a loudspeaker cone diaphragm to allow the upstream surface to be placed proximate to the loudspeaker cone diaphragm; a plurality of inlets through the upstream surface disposed symmetrically about and having an outward radial orientation on the longitudinal axis; a downstream planar output plane substantially perpendicular to the longitudinal axis, the downstream planar output plane being divided into a plurality of outlet ports in one to one correspondence to the plurality of inlets; and phase leveling channels connecting each of the plurality of inlets to a particular one of the plurality of outlets, each phase leveling channel exhibiting a continuously growing progressive radial twist increasing from minimums along the upstream surface and along radially interior sections to maximums at the downstream planar output surface and along a latitudinal perimeter of the body.