CN2266242Y

CN2266242Y - Inverting type speaker system

Info

Publication number: CN2266242Y
Application number: CN 95241950
Authority: CN
Inventors: 陈东红
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-31
Filing date: 1995-07-31
Publication date: 1997-10-29
Anticipated expiration: 2005-07-31

Abstract

The utility model discloses a phase inverted sound box which is composed of a box body and a loudspeaker, wherein, the loudspeaker comprises a high pitch loudspeaker and a low pitch loudspeaker. A metal panel is arranged on a panel of the box body. A plurality of prismatic spaces are formed in the box body by cutting plates, which forms a plurality of levels of phase inverted chambers. Every two phase inverted chambers are communicated through phase inverted pipes. A tail level of phase inverted pipe is provided with an opening on the panel of the box body. The product of the utility model has the advantages of natural effect on low frequency, pure timbre, good transmission performance, and high low frequency radiant sensitivity and low frequency feeling of quantity.

Description

Phase inverted cabinet

The utility model relates to a kind of sound appliances, especially audio amplifier.

The bodily form majority of existing its acoustic box of audio amplifier is a rectangle, and it is trapezoidal that minority is arranged, and its acoustic construction form majority is disposable inverted phase type, and minority is the secondary inverted phase type.This class inverted phase type structure is easier to cause that case shakes, thereby makes shoddyization of bass owing to the limitation of acoustic box appearance; Simultaneously, because the paraphase number of times is few, the medium-high frequency that has the part loud speaker to send dorsad goes out by the phase-reversing tube refraction easily, thereby influences purity and some phase interference of low frequency tone color; And if under less volume condition, it is difficult to accomplish that low frequency extends audio preferably.

The purpose of this utility model provides a kind of phase inverted cabinet of new structure form, this audio amplifier is further developing the phase inverted cabinet principle, thereby make the low frequency audio obtain certain raising, simultaneously, especially make the audio amplifier of less volume also can obtain the comparatively desirable effect of low-frequency minimum.

The purpose of this utility model is achieved in that it is made of casing and loud speaker, and loud speaker comprises high pitch loudspeaker and woofer.One metal decking is installed on the cabinet panel, and box house forms several prismatic spaces and constitutes some grades of paraphase chambers by cutting plate, and each paraphase chamber communicates in twos by phase-reversing tube, and the final stage phase-reversing tube is opened on the cabinet panel.

Below in conjunction with drawings and Examples, structure of the present utility model is further described in detail.

Fig. 1 is outline drawing of the present utility model;

Fig. 2 is the casing schematic diagram of the utility model by prismatic space (being the paraphase chamber) formation;

Fig. 3 is the utility model box house principle assumption diagram.

As shown in the figure, the utility model is to be made of casing 1 and loud speaker, and loud speaker comprises high pitch loudspeaker 2 and woofer 5.Its key technology is on cabinet panel (being baffle) metal decking 4 to be installed, box house is made of three that cut that plate forms or three above prismatic space combining, each prismatic space is an acoustics paraphase chamber, be that elementary paraphase chamber 6, intermediate paraphase chamber 7 reach to final stage paraphase chamber 8, communicate in twos by phase-reversing tube 9 between each paraphase chamber, constitute repeatedly phase inverted cabinet of prismatic spatial group zoarium.The opening of final stage phase-reversing tube forms final stage paraphase hole 3 on cabinet panel, so as to the resonance low frequency is penetrated casing.

The utility model and traditional phase inverted cabinet relatively have following major advantage:

1, traditional phase inverted cabinet bodily form mostly is rectangle, and be prone to case and shake, thus the tonequality of making Deterioration; The paraphase chamber that the utility model utilizes the prismatic space to form has overcome because of the body limitation The case that the causes phenomenon of shaking, thus the effect of low frequency nature and the fax on the tone color thereof guaranteed Degree;

2, for once paraphase of traditional phase inverted cabinet majority, loudspeaker are dorsad among the acoustic energy High frequency is done also can penetrate from paraphase hole behind the Multi reflection in casing, thereby has affected low frequency Tone color pure; And the utility model takes full advantage of the sound of medium, high frequency refraction, low frequency diffraction The ripple rule utilizes each case chamber to do not equidirectional medium, high frequency refraction control, through too much After the inferior paraphase, the medium, high frequency of inner loudspeaker backward radiation is filtered out, thereby guaranteed The effect that its bass colour purity is clean.

3, traditional phase inverted cabinet has only the one-level phase-reversing tube to produce low-frequency resonant, and therefore, the low frequency amount is experienced certain limitation, and this phenomenon is more outstanding under the especially less volume condition; The multistage paraphase of the novel employing of this reality, every grade of phase-reversing tube all produces low-frequency resonant, because of multistage low-frequency resonant stack has improved low frequency radiation sensitivity, the sense of low frequency (especially small size audio amplifier) amount is improved.

Claims

1, a kind of phase inverted cabinet, constitute by casing (1) and loud speaker, loud speaker comprises high pitch loudspeaker (2) and woofer (5), it is characterized in that being equipped with on the cabinet panel metal decking (4), box house forms several prismatic spaces and constitutes some grades of paraphase chambers by cutting plate, each paraphase chamber communicates in twos by phase-reversing tube (9), and the final stage phase-reversing tube is opened on the cabinet panel.

2, according to the said phase inverted cabinet of claim 1, it is characterized in that the paraphase chamber that the prismatic space constitutes has three at least, be respectively that elementary paraphase chamber (6), intermediate paraphase chamber (7) reach to final stage paraphase chamber (8).