JPS63159986U

JPS63159986U -

Info

Publication number: JPS63159986U
Application number: JP5228087U
Authority: JP
Priority date: 1987-04-07
Filing date: 1987-04-07
Publication date: 1988-10-19

Description

[Brief explanation of drawings]

第１図は本考案音響再生装置を前面から見た斜
視図、第２図はその背面から見た斜視図、第３図
は装置を天面から見た内部配置図、第４図は装置
を背面から見たヘルムホルツ共鳴管の構成図、第
５図は要部側断面図、第６図及び第７図は管を通
過する音のフイルタ動作を説明する原理図である
。１ａ……キヤビネツト前面、１ｂ……キヤビネ
ツト背面、Ｓ_１，Ｓ_２……中・高音用スピーカ、
Ｓ_３……低音用スピーカ、４……ヘルムホルツ共
鳴管、１０……放音口、１１……把手兼用開口、
１２……蓋体。 Fig. 1 is a perspective view of the sound reproduction device of the present invention seen from the front, Fig. 2 is a perspective view of the device seen from the back, Fig. 3 is an internal layout diagram of the device as seen from the top, and Fig. 4 shows the device. A configuration diagram of the Helmholtz resonance tube seen from the back, FIG. 5 is a sectional side view of the main part, and FIGS. 6 and 7 are principle diagrams illustrating the filtering operation of sound passing through the tube. 1a...Front side of the cabinet, 1b...Back side of the cabinet, _S1 , _S2 ...Speakers for medium and high frequencies,
_S3 ... Bass speaker, 4 ... Helmholtz resonance tube, 10... Sound emitting port, 11... Opening that also serves as a handle,
12...Lid body.

Claims

[Scope of utility model registration request]

In a sound reproduction device in which a speaker for medium and high frequencies is arranged in the front of a cabinet, a speaker for bass sounds is arranged in the back of the cabinet, and the sound from the bass speaker is output from a sound output port formed in the front of the cabinet. A Helmholtz resonance tube is formed along the back surface of the cabinet, and an opening that also serves as a handle leading to the Helmholtz resonance tube is formed approximately in the center of the back surface of the cabinet, and a lid body is provided in the opening so that the lid body can be opened and closed. A sound reproduction device characterized in that the frequency pass band of a Helmholtz resonance tube is changed by.