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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram of a conventional composite
speaker, and FIG. 2 is a circuit diagram of a composite speaker to which the present invention is
applied. In the reference numerals used in the drawings, 2
иииииииииииииии ?Divider network и 6a, 6b и и и и и и и и и и и и и и и и и и и и и и и и и и Divider 1 и network и и и и и и и и и и и и и
и и и и и и и и и и и и Divider 1 и network и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и
и и и и ... It is a changeover switch.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite
speaker provided with a plurality of speakers each having a different frequency range of
reception. A combined speaker system (two-way, three-way, etc.) t-driving method using a
plurality of speakers each having a different reception frequency range (one way jll (dividing
network) kMAvs) and a method! There is a method of using a multi-amplifier (i multi-channel / i
system). The former is a method in which a t-dividing network is provided in a speaker box and
an output signal of an output amplifier is divided into a number range of j11fIL of each speaker
and then supplied to each speaker. In the latter, the output signal t filter of the previous stage
amplifier or middle stage amplifier is first used to divide into the S wave number domain of each
speaker, and this divided ? 99 signal t * separate output amplifiers are used for amplification It
is a method of supplying to each speaker after having done it. In the case of the complex type
speaker, the input terminal for the divide-by-knob network and the input terminal for the
multichannel are respectively provided as in the above-described 02 methods to obtain + 21-1- +
1. Fig. 1111 shows the number of circuits of such a conventional composite speaker system.
Complex type speaker (1) shown in M1 is a 3-way system, and it is a speaker for bass (2)
(woofer), a speaker for medium weight (3) (a genuine range is a scarca) and a speaker for treble
(4) ) (Tweeter) is equipped. Then, in the back of the speaker l-tsu of this composite type speaker
ill, a full gear / di input terminal (6a, 6b) for use with a Devidy knob network i 51k, and an input
terminal (7 foot huff when used as a multi channel 7 channel) b). (8aJ (8b), (9a) 9b), and network
(/) switch / martee / switch No. switch 10 (10a) to (10e) are provided respectively. These
switches (10aJ to (10eJ) are also provided. In each case, the mechanical contact is divided by Kjl,
and the contact point N is for deplying network for Ton, while the contact point MII is for multichannel. First of all, the Devidie knob network tatv [# 1t3J11i is connected to the output terminal
of the full-layer input / output (6a halo b) and the output terminal (not shown), and the
changeover switch (10 m) to (10e) Connect to k11 point N @. When connected in this way, the
low frequency components of the input signal are also supplied to the low frequency sounder t21
through the low pass filter Sumio and the saddle point Nk of the changeover switch (10a).
Also, the mid-frequency component is supplied to the medium sound speaker +3+ through the
respective contacts N1 of the buffered pass filter 0 and the changeover switch (10bJ (10c)).
Further, high frequency components are supplied to the high sound speaker (41 through the
respective contacts N11k of the bypass filter Buddha J and the changeover switches (10d) and
(10e). Next, when using it as a multichannel. The output sound of each multi-a / b (not shown) is
connected to the input terminals (7a haf b), (8a 8b), (9a b 9b) respectively, and the changeover
switches (10a) to (lQe) 't contacts Mva To follow. When connected to cO5, each speaker (2) + 31
+ 41 is driven to 1ll1k by the output signal of each multi-ann 1 ? In such a composite speaker
(1), ne 4J-1,. Both the full range input terminals (6a) and (6b) when using the first work 151k
and the input terminals (7a buff b), (8a) (8b) and (9m) (9b) when using as multichannel / channel
If it is necessary to provide p%, the number of parts will increase and the cost will increase. The
present invention has been made in view of the above-mentioned problems, and when the
changeover switch is connected to one side, the multi-channel input terminals respectively
corresponding to the plurality of speakers have different frequency ranges. When different state
motion signals are supplied to the respective speakers and the changeover switch is connected to
the pond, the common drive signal from the predetermined input terminal of the input terminals
passes through the division circuit and the division circuit. The number of input terminals can be
reduced by thus setting the number of input terminals to be supplied to each speaker. Thus, it is
possible to reduce costs and reduce the possibility of misconnection O. I have to. Below we will
refer to the actual xaPIwm 7 of the present invention. 112 is the home J! [Applicable for the II
group speaker 81 ? 1 Oki J1 @ mischief. Complex type speakers shown in m2 (in 11 the full
range input terminal when using a network, and the input terminal of the low-frequency speaker
(2) when using it as a multi-channel, rm child (7 m) (? b) share it with i. That is, when the dividing
network 151k is used, 1 is connected to the input terminals (7a, 7b) and the output port of the
output amplifier, and the changeover switches (10a) to (10f) @ contacts NIIKJI. As a result, the
low-pass dust #L number component #i of the input signal from the input terminal (7a Huff b) is
supplied to the bass speaker 121 through the respective contacts NYt of the + lotus filter a and
the changeover switch (10f 10a). Ru.
In addition, the middle frequency component is ? iIN turned to the middle sound speaker (31 by
the respective contacts NN 111r of the bad bass filter ? and the changeover switch (10bJ (10c)).
In addition, high-frequency components are bypass filter tti and a changeover switch (10 dJ (10
eJ's husband kO fire point N11llk through ^ 4 F @ speaker (I 11)). Next, when using it as multi
channel 7 channel. The output of each multi-amplifier is connected to the input terminals (7a)
(7b), 63 (8a) (8b), (9b) (9c) and connected to the changeover switches (10a) to (10f) kJ1 point
Mll1 . Cono result. Each speaker t21 t31 (41 is directly driven by the output signal of each
multiplier 77O. Therefore, according to the lpl configuration of the multi-trapezoidal speaker
shown in FIG. 182, the input ladder kill can be reduced by comparison with the conventional one.
In FIG. 2 ex, the changeover switch (100 is provided to a friend), but this does not increase the
cost so much because the corner point of the interlocking changeover switch is increased by only
one circuit. Therefore, it is possible to reduce the cost of the combined speaker t) as a whole.
Also, since the number of children is reduced, there is less risk of entertainment connection. The
multi-channel-input terminals (8a and 8b) are connected to (9a and 9b), and even if they are
shared with full-relays / di / \ swords, they are also different. As described above, the present
invention, as described above, each holds I4 #: one of a plurality of input terminals of a plurality
of friends which respectively supply different driving signals of different frequency bands to a
plurality of odorous speakers in a number band, The common ?-@ symbol is also shared as a
manual power terminal for supplying each of the above speakers by dividing the 1 gl
abbreviation. Therefore, the number of input terminals is small), the cost is low and there is little
risk of misconnection in this case.
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