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JPS56145190

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DESCRIPTION JPS56145190
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional twoway speaker system, FIG. 2 is an electrical connection diagram of FIG. 1, and FIG. 3 is an
electrical connection diagram showing another conventional example. 2 is an electric circuit
diagram of FIG. 2, FIG. 5 is an electric circuit diagram showing one embodiment of the present
invention, and FIG. 6, 7 and 8 are electric circuit diagrams showing another embodiment of the
present invention. It is. In the figure, 2 is a high-pitched speaker, 3 is a bass speaker, 4 is a
network, 5 and 6 are lead wires, and CI. C2はコンデンサ、L□、L2はインタフタである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker system
intended to improve the sound quality of a multi-unispy system or the like. An example of a
conventional Maraisen Jais Bekanstem will be described with reference to FIGS. 1 to 3. FIG. 1 is a
cross-sectional view of a two-way speaker system, in which 1 is a speaker box, 2 is a speaker for
high-pitched sound, 3 is a speaker for low-pitched sound, and 4 is a net. The bass subbi (1), / S
no) 07.7 mm, and the force 3 are connected by the lead wire 5.6. The electrical schematic of FIG.
1 is shown in FIG. In Fig. 2, 2 to 6 are the same as in Fig. 1. In FIG. 2, since the lead wires 5 and 6
have a resistance, the back electromotive force generated in the moving coil of each speaker 2.3
is short circuited by the circuit element in the network 4 through this resistance, for example, a
capacitor and an inductor. As a result, the braking force does not sufficiently act on the cones of
the speakers, so that the sound quality is degraded. The present invention has been considered in
view of the above points, and provides a loudspeaker system with good sound quality by
transferring a capacitor or an inductor connected in parallel to the speaker among the circuit
elements in the network from the network to the speaker side. It is. As shown in FIG. 3, in the
coaxial type speaker etc., although the one in which the capacitor C is inserted in series to the
high sound speaker 2 is known, in this case there is no effect of shorting back electromotive
force at all. So it is different from this invention. (2) 11. FIG. 4 is an electric circuit diagram of a
two-way speaker system showing an example of application of the present invention. The
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network 4 has a capacitor C1 in series with an inductor L in parallel with the high sound speaker
2 side, an inductor in series with the speaker 3 for bass, and a capacitor C2 in parallel with it. As
described above, the sound quality of the lead wires 5 and 6 is degraded in this configuration.
FIG. 5 shows an embodiment of the present invention, in which the present invention is applied
to FIG. That is, it is connected to the side of each speaker 2.3 such as the inductor L2 and the
capacitor C7 in parallel with each of the speakers 2.3 in the network 4. According to this, the
back electromotive force base 1 generated by the high-pitched speaker 2 is short-circuited by the
nodactor L2, and the back-electromotive force generated by the bass speaker 3 is shorted by the
capacitor C2, and the resistances of the lead wires 5, 6 are As it is not related to the braking
force, a sufficient braking force can be obtained.
FIG. 6 shows another embodiment of the present invention, in which the inductor L1 in FIG. 5 is
divided into (3) Lla and L + b, and the parallel combination value thereof is made equal to
Similarly, capacitor C7 is c! , And Ctb, and it is possible to select an optimal value for obtaining
sufficient braking force for LIsl 02 @. 7 shows still another embodiment of the present invention,
in which a medium sound speaker T is further added to the embodiment of FIG. 6 and connected
to the network 4 by the lead aS, and a capacitor cs in the network 4 is obtained. C4a-inductor
L3IL4 is added, and a capacitor C4b is attached to the medium sound speaker T @. Although only
the capacitors are divided into C4 and C4b in the embodiment of FIG. 7, the inductor may be
divided into L- + a and L4b as shown in FIG. As described above in detail, since all or part of the
capacitor or inductor connected in parallel with the speaker among the circuit elements in the
network is connected to the speaker side as described above in detail, the back electromotive
force generated in the speaker is Since the short circuit can be made directly without passing
through the lead wire, the damping force of the vibration system is improved, unnecessary
vibration is reduced, and the rise of the sound can be reduced. , Self ゝ 14 '1 l-C-t! River "l ·
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