Patent ID: 8422721

Claim:
A loudspeaker system, comprising: a housing; and at least four transducers arranged in said housing, each of said transducers including a substantially circular diaphragm, a first one of said diaphragms being the smallest diaphragm, a second one of said diaphragms being larger than said first diaphragm, a third one of said diaphragms being larger than said second diaphragm and a fourth one of said diaphragms being larger than said third diaphragm, a ratio of a diameter of each of said diaphragms to a diameter of an immediately larger one of said diaphragms being between 1:1 and 1: Phi 2 (phi=(1+√5)/2) and a ratio of the diameter of each of said diaphragms to a diameter of an immediately smaller one of said diaphragms being between 1:1 and 1:(1/Phi 2 ), said diaphragms being configured such that centers of said diaphragms lie on a spiral in ascending size order such that a center of said first diaphragm is closest to a pole of said spiral, a center of said second diaphragm is farther than the center of said first diaphragm from the pole, a center of said third diaphragm is farther than the center of said second diaphragm from the pole and a center of said fourth diaphragm is farther than the center of said third diaphragm from the pole, said diaphragms being further configured such that the spiral on which the centers of said diaphragms lie is an equiangular spiral of approximately 73° constant tangent angle derived from a Golden Rectangle and the centers of adjacent one of said diaphragms are separated by 90° angles of rotation from the pole.