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JPS5442502

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DESCRIPTION JPS5442502
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view of the present
embodiment. 1 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · lead wire.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of a record player. In the case of a cartridge in a conventional record player, for example, in the
case of an MC product, the impedance is as low as several ohms to several tens of ohms, the
resistance of the lead from the cartridge to the inside through the tone arm can not be ignored If
you use a thick, low resistance lead wire to the house-to-brick 2-1, the movement of the tone arm
becomes dull and the tracing ability decreases. On the other hand, in the case of a cartridge in
which the impedance is as high as 10 jCΩ to several hundreds Ω in MMW and the like, the
floating wire between the lead wires and the impedance 5.8 of the cartridge, 11. Oh, □, お い, 2
° □ 1--* <,? And leads to hum in the head shell and the lead wires that are sprayed inside the
player O. Also, the lead wire from the cartridge to the amplifier is extremely long, and the output
of the cartridge is extremely low. It is easy to The present invention pays attention to such a
point. In the head shell or the tone arm, an equalize and / circuit are provided in the head shell or
tone arm and lead wires are connected to the output side of the equalizer circuit. It is an object of
the present invention to provide a record player that solves the above-mentioned problems. In
the following, one embodiment will be described with reference to the drawings. The equalizer
circuit 2 is connected to the output − from the cartridge 1, and the equalizer circuit 2 is
connected to the amplifier 4 through the lead wire 3. The equalizer circuit 2 is provided in the
toe 7 arm on which the cartridge 1 is attached, in the toe 7 arm. As the equalizer at this time, for
example, a general RI-Mum characteristic is used, thereby making the frequency characteristic on
the output side of the equalizer circuit 2 substantially flat. In addition, amplification of a
predetermined amount is also performed, and impedance conversion is also performed so that
the output side i3 is an i. As a result, since the frequency characteristic is improved before
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reaching lead wire 4, 4 can be made good, and it can be amplified, and innoidance conversion is
also performed to about several hundreds Ω (·), lead wire Internal resistance can be ignored and
crosstalk can be improved. That is, the shadow w of the lead wire can be extremely reduced. In
addition, the equalizer circuit is compact and lightweight by using an IC etc. There is no harm to
one boat.
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