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This is an improvement of the network method of the multi-way speaker system, in which a
network (filter) is inserted with a low gain amplifier between itself and the speaker unit. In the
conventional network system, a filter is inserted between the amplifier and the speaker unit. Due
to the relationship between the impedance of the filter and the impedance of the speaker unit
that changes with the signal, both theoretical and auditory distortions occur. Another multi-way
speaker system is a multi-amplifier system using a channel divider. This method is a. Channel
dividers are prone to sound degradation. ロ. Channel dividers with low sound quality
degradation and excellent filter characteristics are expensive. ハ. Since a power amplifier
having a voltage amplification degree is directly connected to the tweeter unit, a bass voltage is
added to the tweeter unit and the tweeter unit is often damaged. ニ. Adjustment on sound
quality is delicate. ホ. The cost is high because a normal power amplifier is used. In order to
remove distortion of the network system, an amplifier is inserted between the network system
and the speaker unit. This amplifier does not require voltage amplification. As the coil, capacitor
and load resistor values of the network of the present invention become irrelevant to the
impedance of the speaker unit, the set values become much freer, resulting in small size, light
weight and cost reduction. Since the load resistance is pure, the filter characteristics are good.
The disadvantages of the multi-amplifier scheme using channel dividers do not occur in the
present invention. The present invention does not introduce new disadvantages.
Brief description of the drawings
FIG. 1 is a block diagram of the present invention, which is an example of a two-way speaker
Explanation of sign
Arrows indicate the passing direction of the signal.