JP2003036738A - Speaker cable having low impedance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker cable having low impedance which decreases eddy current and capacitive impedance and reduces loss of transmission signals in the region above ultra-high frequency of the audible frequency band. SOLUTION: The speaker cable comprises coating a jacket on outer periphery of two super thin conductors, which are having the diameter of <=0.1 mm and are coated by an insulator and placed in parallel in order to decrease the excess electric current and capacitive impedance and reduce loss of transmission signals in the region above ultra-high frequency of the audible frequency band.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an audio device,
Or, it relates to the technology of speaker cables used to connect language learning devices.

[0002]

BACKGROUND OF THE INVENTION speaker cables used in connection of a conventional audio and language learning device, because it was focused on the direct current resistance none thicker conductor, eddy current and capacitive impedance is high Thereby, audible Due to the large amount of signal transmission loss at frequencies near the ultra-high frequency band, it is difficult to reproduce the source sound, so there is still a gap between the live performance and the musicians and audiophiles complaining. Loud voice. It is required to realize a speaker cable with little difference between sound reproduction technology and live performance.

Further, in foreign language education that is learned from the ear, there is also a problem that the conversation by reproducing the device becomes unclear as compared with the real voice. Various technical measures have been taken for educational equipment to reproduce conversations in foreign languages that contain many overtone components. However, since good results cannot be obtained at this point, realization of effective means is required.

[0004]

However, in the conventional speaker cable, since it is important to reduce the direct current resistance, the eddy current and the capacitive impedance cannot be significantly reduced. Therefore, the present invention ignores the increase in the DC resistance of the speaker cable, reduces the eddy current and the capacitive impedance, and makes it possible to reduce the signal transmission loss in the frequencies near the ultra high frequency range of the audible frequency band. This is an issue.

[0005]

In order to solve the above-mentioned problems, a low impedance speaker cable according to claim 1 has two superfine conductors of 0.1 mm or less covered with an insulator, which are arranged in parallel to each other, and have an outer periphery. Cover the jacket.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the low impedance speaker cable of the present invention is used in an audio device will be described with reference to the drawings. FIG. 1 is a structural diagram showing a low impedance speaker cable of the present invention, in which 1 is a superfine conductor, 2 is an insulator, and 3 is a jacket. As shown in the figure, the outer surface of a 0.09 mm copper single-wire superfine conductor 1 is covered with a low-dielectric-constant polyethylene insulator 2, which is arranged in parallel. It covers the insulating jacket 3. With this structure, the DC resistance can be increased compared to the conventional speaker cable due to the ultra-fine conductor of 0.09 mm, but the eddy current and the capacitive impedance can be reduced. As a result, signal transmission loss at frequencies near the ultra-high frequency range of the audible frequency band is reduced, and faithful signal transmission can be performed.

FIG. 2 is a structural view showing another low impedance speaker cable of the present invention, in which 1 is a superfine conductor and 2 is a superfine conductor.
Is an insulator and 3 is a jacket. As shown in the figure,
Seven 0.03 mm single copper wires are bundled as superfine conductors, the outer periphery is covered with a polyethylene insulator, two of them are arranged in parallel, and the outer periphery is covered with a polyethylene insulator jacket. The surface area of the conductor is increased, the eddy current is further reduced, and the signal transmission loss at frequencies near the super high frequency range of the audible frequency band is reduced as compared with the case of using the 0.09 mm copper single-wire superfine conductor. Signal transmission is performed, and overtone components included in frequencies near the super high frequency range of the audible frequency band can be reproduced.

FIG. 3 is a diagram showing a configuration in which the low impedance speaker cable of the present invention is used in an audio device.
Reference numeral 10 is a CD player, 11 is an amplifier, 12 is a speaker, 13 is a low impedance speaker cable for connecting the amplifier 2 and the speaker 3, and the low impedance speaker cable is a single wire or a bundled wire. Also,
When the low impedance speaker cable is used as an RCA pin cable of a signal cable in the connection between the CD player 10 and the amplifier 11 in combination with the low impedance speaker cable, an effect similar to that of the low impedance speaker cable is obtained, and an audio device is further provided. The overall effect is enhanced.

In this embodiment, the ultrafine conductor is 0.09 m.
m copper single wire or 0.03 mm copper single wire is bundled with seven, and the outer periphery is covered with a polyethylene insulator, and two are arranged in parallel.
I used a jacket of polyethylene insulator on this outer circumference, but it may be used if the diameter of the ultrafine conductor is smaller,
The conductor material may be used if it has more mechanical strength, and the conductor may be either a single wire or a bundled wire, but is not limited thereto. Further, the insulating material as the insulator and the jacket may be used as long as it has a dielectric constant lower than that of polyethylene, and the insulating material may not be necessary and the jacket is not always necessary.

[0010]

The present invention has the following effects due to the configuration described above. By lowering the eddy current and the capacitive impedance, the signal transmission loss at frequencies near the audible frequency band in the super high frequency range was reduced, and faithful signal transmission was achieved. Suitable for speaker cable for driving zitter of multi-amplifier type and bi-wiring type speaker system of audio equipment that requires harmonic components included in the frequency of the speaker, small and medium volume speaker of language learning equipment or home audio equipment Can be applied to cable.

[Brief description of drawings]

FIG. 1 is a structural diagram showing a low impedance speaker cable of the present invention.

FIG. 2 is a structural diagram showing another low impedance speaker cable of the present invention.

FIG. 3 is a configuration diagram showing an embodiment in which the low impedance speaker cable of the present invention is used in an audio device.

[Explanation of symbols]

1 ... conductor 2 ... Insulator 3 ... Jacket 10 ... CD player 11 ... Amplifier 12 ... speaker 13 ... Low impedance speaker cable

Claims (2)

[Claims] 1. A superfine conductor (1) of a single wire or a bundle of 0.1 mm or less, an insulator (2) covering the outer periphery of the superfine conductor, and two of these are arranged in parallel, and the outer periphery is A low-impedance speaker cable, comprising: an insulating jacket (3) for covering. 2. The low impedance speaker cable according to claim 1, wherein the insulator is made of polyethylene.