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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conventional circuit, and FIG. 2 is a circuit
diagram of the present invention. 1.2 ················ 3, 4 ················ Speaker.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker
switching circuit used in place of two types of speakers t + jJ. This conventional circuit is as
shown in FIG. 1, and is used by switching to the changeover switch 1, 2t-, 4 or B side. When used,
the speaker has one frequency. There is a characteristic and a unique reproduction characteristic
(the peculiarity), and each music source D is J! Therefore, two speakers are used at the same time
for eight minutes, and if it is desired to further increase the force t ′ ′), they are
simultaneously driven by switching to A + H. Ai [iA speaker B room one BH speaker] 9 (21
images-/ 3 3? Two power amplifiers drive or drive simultaneously. It is also used in In such a
circuit, see FIG. 1 of the prior art. Since the m- of the speaker 6.4 is connected to the ground
respectively, the A speaker 3. When driving B speaker 4 at the same time, A speaker 3B Sby.
Force 4 is connected in parallel, so it's t'L4 Ω. If you use 9 speakers and i! Suddenly Sbi Kai. The
transistor impedance of the drive amplifier breaks down because of the noise 2Ω. Therefore, the
present invention addresses this point and is apt to improve it, as shown in FIG. Connect and
connect both speakers 3.4. A is connected to the A and B terminals of the changeover switch 2,
and the -A to B4 elements are connected to the changeover switch 20B 111i1 and to the
common single child C2 ground. Because of this, this proposal 211 is to switch to the switch 1.2tΔ 10B when the speakers 3 and 4 are S3 or 2V, and the transistor of the connected drive
amplifier is broken in series as conventionally. Convenient because there is no