JP2007097001A - Speaker system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speaker system for music appreciation which has small footprint, has high faithful sound quality and natural sound spread. <P>SOLUTION: The speaker system is configured in which an amplifier and a player can be easily installed in the inside and the upper part, and a speaker unit of right-left channels is installed on a right-left integrated enclosure with a back load horn type etc. so as to have angles to right-left outside. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a method for manufacturing a speaker system.

For 2-channel stereo playback, the left and right speakers should be spread out appropriately, and listeners should listen at the apex of an isosceles triangle with the left and right speakers as the base, and ideally close to an equilateral triangle. Music that is played back is generally recorded in consideration of this, and the more the listening position deviates from the ideal position, the greater the sense of discomfort in the timbre due to the difference in arrival time and phase of the sound.

However, in reality, stereo speakers are ideally installed and listened to in an ideal position. For reasons such as substantial increase in the occupied installation area and difficulty in fixing the listening position, the player or amplifier will It is considered that the center unit that is constructed is placed close to the left and right speakers, and often deviates from the ideal listening position. In addition, many music lovers tend to listen to music and tones themselves over the spread of left and right sounds.
JP 2001-32781 A JP-A-1994-105385

In general, commercially available stereo systems tend to be unacceptably large when aiming for sound fidelity. Also, when aiming for sound spread and faithful sound field reproduction, installing speakers far enough away and placing them close to walls, furniture, etc. often degrades sound quality, so install them away from them. As a result, the substantial occupied installation area tends to be larger. In contrast, stereo systems with small footprints, such as so-called radio cassettes and mini-computers, tend to have little change in timbre depending on the listening position, but their sound fidelity is low or they are not suitable for the type of music to be played. It tends to occur. Therefore, there is a demand for a stereo system with a small occupied installation area, a listening position that is not so limited, and a high sound fidelity so that music lovers can fully enjoy music.
The present invention has been made to solve such a conventional problem, and its purpose is to provide high sound fidelity and occupy installation in a small-scale space such as a general house or a small-scale office. The speaker system has a small area and can enjoy music sufficiently.

The left and right back horn type speaker system is configured with an integral enclosure so that the user can easily install a separate small amplifier, small disk player, memory player, etc. inside or above. Appropriate spaces or shelves shall be provided to allow operation on the front, side or top surface. At this time, by providing a space or shelf, the function of the enclosure is not hindered.

When installing an amplifier or player, a through hole is provided in the enclosure so that the connection cables can be passed inside. The speaker connection terminal should be installed close to the amplifier so that the cable wiring is easy and short.

In order to reduce the size of the entire system, the speaker unit should be small and high-fidelity as long as there is no functional problem, ideally a high-performance small full-range unit. May be separated.

The left and right speaker units are arranged as close to each other as possible in order to improve the so-called low-pitched sound swing phenomenon in a small unit. Also, the left and right speaker units do not intersect the central axis in any arrangement in order to reduce distortion caused by sound interference at the front of the system.

To improve the left and right sound spread, the right speaker unit is directed to the right and the left speaker unit is directed to the left. When installing the system close to a wall or furniture, place the right speaker unit on the left and the left speaker unit on the right. In the case of further miniaturization, the left and right speaker units are arranged vertically and the left and right units are directed to the left and right respectively. The left-right inclination of each speaker is arranged on the right and left with an angle of 5 to 60 degrees to the right and left with respect to the front surface. Basically, the angle is 30 degrees from the front, but the angle is set to an optimum angle in consideration of the frequency characteristics of the speaker unit and the usage status of the speaker system.

In order to reduce the interference of left and right sounds in the enclosure, left and right partitions are provided in the middle of the sound path or in the whole. In the air chamber, in order to reduce standing waves generated during sound generation, the front plate and the rear surface are made as non-parallel as possible, and a sound deadening material is arranged as necessary. Moreover, in order to reduce the leakage from the duct of medium and high sounds, a silencer is disposed as necessary.

When installing the amplifier inside, consider the size of the opening and ventilation method in order to release the heat generated by the amplifier. The same applies to a case where a lid or the like is provided on the upper portion to store a player or the like.

The stereo set is basically placed in one place, but if easy movement is considered, it will be equipped with casters. Also, consider the design of shapes and hues so that music lovers can handle them without any discomfort.

The amplifier should be as small as possible with the highest quality and less wrinkles, can be built into the system, and has the necessary functions. It is better to generate less heat, but at most, this should be considered so that there is no functional problem. Players and music software should be of high quality as much as possible.

In the speaker system according to the present invention, since the conventional configuration of the left and right speaker systems and the center unit can be integrally formed, the substantial occupation of the entire device including the space around the speakers can be achieved. The installation area can be greatly reduced.

For example, when a speaker unit having a 10 cm diameter is used, the occupied installation area can be approximately 30 cm × 30 cm. However, in the speaker system of the present invention, since it can be a floor-mounted type, Compared with those that are not directly installed on the floor, the effect of reducing the substantial occupied floor area can be enhanced.

Uses a high-performance speaker system such as a back-loaded horn type, and, despite the small unit, can improve the low-pitched air swing phenomenon due to the unit arrangement of the left and right channels, and it is highly faithful with growth. Can play music.

Since the left and right channel speaker units are arranged outward, respectively, unlike mono reproduction, a sound spread that is not so uncomfortable can be obtained. In addition, since the central axes of the left and right channel speaker units do not intersect, sound distortion due to interference can be reduced.

Compared to the case where the left and right speaker units are spread out, there is less discomfort associated with the timbre change due to the listening position and the difference in the arrival time and phase of the sound, so it is not limited to the ideal listening position, so you can enjoy music be able to.

Hereinafter, the form which implement | achieves the speaker unit of this invention based on drawing is demonstrated.

As shown in FIG. 1, the speaker system of this patent mainly includes a right speaker unit 1, a left speaker unit 2, and an enclosure 3.

The right speaker unit 1 and the left speaker unit 2 are arranged at relatively close positions, and the angle with respect to the front surface is basically about 30 degrees. However, the frequency characteristics of the speaker unit, the usage status of the speaker system, etc. Considering the above, the optimum angle is set. Consider shifting the mounting height from side to side so that the central axis direction does not intersect.

In order to reduce the interference of the left and right sound inside the enclosure, the left and right air chambers and the walls that partition the sound path are arranged from the vicinity of the speaker unit to almost the center of the sound path length.

As shown in Fig. 1, the sound path when the enclosure 3 is a backload horn type is designed with consideration for the air chamber capacity, throat cross-sectional area, cross-sectional magnification, and smooth sound path configuration so that bass can be efficiently amplified. To do.

An amplifier can be installed at the center of the enclosure 3, and the wiring path from the speaker unit can be minimized. In addition, an upper door can be attached so that the player can be placed on top of the enclosure 3 and stored.

Next, a speaker system according to the second embodiment is shown in FIG.
In this example, the occupied floor area is further reduced as compared with the speaker system of the first embodiment. As in the first embodiment, the right speaker unit 1, the left speaker unit 2, and the enclosure 3 are the main components.

The right speaker unit 1 and the left speaker unit 2 are disposed at relatively close positions, and are respectively disposed on the right and left with an angle of about 30 degrees to the right and left with respect to the front surface. Make sure that the mounting height is as close to the left and right as possible. In addition, as long as the mounting angles of the left and right speaker units are maintained, the top and bottom may be reversed.

The enclosure 3 of the second embodiment is also a back load horn type, and the consideration for the air chamber and the sound path is the same as that of the first embodiment. The same applies to considerations for reducing the interference of left and right sounds inside the enclosure 3.

An amplifier can be installed at the bottom of the enclosure 3 and a player can be placed on top of the enclosure 3.

Next, a speaker system according to the third embodiment is shown in FIG.
This example is similar to the speaker system of the first embodiment, but is an example in which the speaker unit 1 and the speaker unit 2 are configured to have substantially the same height. The right speaker unit 1, the left speaker unit 2, the flange 6, and the enclosure 3 are the main components.

Care should be taken not to cross the central axis direction by shifting the angled flange 6 or the left and right speaker unit mounting angles up and down.

The enclosure 3 of the third embodiment is also a back load horn type, and considerations for the air chamber, the sound path, and the like are the same as in the first embodiment. The same applies to considerations for reducing the interference of left and right sounds inside the enclosure 3.

Next, a speaker system according to a fourth embodiment is shown in FIG.
In this example, although it is similar to the speaker system of the second embodiment, it is an example in which the height of the sound waves radiated from the left and right speaker units to reach the listener is considered to be the same. The right speaker unit 1, the left speaker unit 2, and the enclosure 3 are the main components.

The angle 6 or the left and right speaker unit mounting angles are shifted up and down, or the flange as in the third embodiment is considered to bring the central axis direction closer to the listening position.

The enclosure 3 of the fourth embodiment is also a back load horn type, and the consideration for the air chamber and the sound path is the same as that of the first embodiment. The same applies to considerations for reducing the interference of left and right sounds inside the enclosure 3.

1 is a speaker system according to Embodiment 1. 6 is a speaker system according to Embodiment 2. 10 is a speaker system according to Example 3. 10 is a speaker system according to Example 4.

Explanation of symbols

1 Speaker unit for right channel 2 Speaker unit for left channel 3 Enclosure 4 Amplifier 5 Player 6 Flange

Claims (7)

A stereo speaker system that allows a user to easily install or change a small player or small amplifier inside and use it as a whole. The stereo speaker system according to claim 1, wherein troublesome wiring cables generated outside are passed through to improve the speaker system. Back load horn type, front horn type, passive radiator type, double bass reflex type, resonance tube type, and their combined type speaker system, in which left and right channel speakers are configured in one enclosure. 4. The speaker system according to claim 3, wherein left and right partitions are provided halfway along the sound path in order to reduce mutual interference inside the enclosure by the left and right channel speaker units. In order to improve the so-called low-pitched air swing phenomenon in a small unit, a speaker system is characterized in that speaker units of left and right channels are installed in close proximity. 5. The stereo speaker system according to claim 4, wherein the central axes of the left and right channel speakers are not crossed in order to reduce interference between left and right sounds and to reduce the size of the system. A speaker system characterized by arranging left and right channel speakers upside down in order to reduce the occupied floor area and improve the spread of sound left and right when installed close to walls and furniture.

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