Bass reflex type speaker device, mounting structure and mounting method for speaker device

摘要

A bass reflex type speaker apparatus comprises a speaker box having an opening portion on a front surface, a speaker unit (1) mounted within the speaker box in conformity with the opening portion, and a tubular duct (7) that externally radiates sound from a rear surface of the speaker unit (1) disposed within the speaker box through phase inversion. The duct (7) has on the same plane one or a plurality of bent portions bent in substantially dogleg form and linear portions extending at both ends of the bent portion, the duct being disposed in parallel with the front surface of the speaker box. At least the longest linear portion of the linear portions is disposed tilted relative to wall surfaces except for the front and rear surfaces of the speaker box. It is thus possible to reduce the size, namely height, width and depth, of the speaker box incorporating the duct.