Partitioning inside the design mannered null cabinet itself

摘要

PROBLEM TO BE SOLVED: To provide a speaker cabinet and speaker system which satisfies both lowering of a low-frequency reproduction limit and flattening of frequency characteristics.;SOLUTION: The inside of a cabinet body 3A is divided into three or more air chambers 31-3n, the air chambers are sequentially communicated by ducts D1 to Dn-1, the air chamber 3n is communicated with the outside by the duct Dn, and a speaker unit 2 is mounted in the air chamber 31. When the lowest resonance frequency of the unit 2 is defined as f₀, the identical compliance equivalent volume is defined as Vas and a -6dB cutoff frequency of sound pressure frequency characteristics obtained by driving the unit 2 is defined as fc, real volume of the air chamber 31 is (0.04-0.3)×Vas/(fc/f₀)2, the resonance frequency of the ducts D1-Dn falls within the range of 1.4fc-4.2fc, real volume Vn of the air chamber 3n is double or more of the real volume V1, and the real volume is sequentially increased from the air chamber 31 to an air chamber being positioned most at the side of the air chamber 1 in the order of communication among air chambers having real volume not less than double of the real volume V1.;COPYRIGHT: (C)2007,JPO&INPIT