The stereo cassette deck which pursued the new value
which is not in a restraint of a price point until now, and attained
In order to pursue a tone quality, the member
which carries only a necessary minimum function and has an ill effect on a tone
quality is eliminated.
While adopting a double NF circuitry and
attaining a distorted reduction and a direct-current stabilization, the loss
correction of the strict head based on a theoretical value is carried out to the
sound-recording equalizer amplifier. Moreover, the dynamic range is earned using
highly efficient low-noise operational amplifier.
Moreover, the play
equalizer amplifier has also adopted the double NF type, chooses the reproducing
head and a congenial transistor, and is making them the discrete stream
In order to prevent distorting the wave of a bias current,
or modulating a music signal because a voltage is unstable, and causing a
tone-quality failure, while putting a constant-voltage regulated power supply
into a bias oscillator circuit, wave distortion is suppressed using the
circuitry extravagant with an oscillator.
Moreover, a bias adjustment
mechanism for exclusive use is prepared in the interior of a set for every tapes
position of the right-and-left channel ZX, SX, and EX, and it is adjusting to
the best bias.
The 1.2micro gap high bias recording-play combination
head which made the contact surface with a tapes the shape of a hyperbola
(hyperbolic form) is adopted as a head.
In the mechanism part, the motor in which the precision of the motor for
rolling up has the orderly bearing paying attention to affecting a flutter
is used. Metal roundness makes a pulley etc. high and the flutter is kept
from coming out of it also in the stage of a power propagation.
Moreover, the microprocessor for exclusive
use is adopted as a mechanism control, a current situation is judged from the
status of the cam attached to the mechanism, and a processor issues a verb and
is operating the motor.
One coordination of about 30 items is all
carried out, and BX-1 produced is suppressing the variation for every product.
The equalizer switchpoint of two positions is carried and two positions
for 120 microseconds and 70 microseconds can be chosen.
diode peak level meter is carried, and it can check in a span of -30dB - +5dB.
The sound-recording balance and the sound-recording master volume are
||Stereo cassette deck
||4 track two-channel stereophonic system
|Motor (for tape transports)
||For capstans: DC servo motorx1
reels: DC motor
|Wow and flutter
||0.06% or less WTD RMS
0.11% or less WTD
||20Hz - 20kHz (recording level -20dB)
|A comprehensive S/N ratio (IHF-A)
||DolbyNR B on: 62dB or more (ZX tapes, 70
microseconds, 400Hz, THD 3%, WTD RMS)
|A comprehensive distortion
||1.0% or less (400Hz, 0dB, ZX, EXII tapes)
1.2% or less (400Hz, 0dB, SX tapes)
||60dB or more (100Hz, 0dB)
||36dB or more (1kHz, 0dB)
||60dB or more (1kHz, 0dB)
||50mV / 30kohm
|An Output voltage/impedance
||Line: 0.5V (400Hz, 0dB) / 2.2kohm
Headphone: 1.2mW (400Hz, 0dB)/8ohm
||A maximum of 23W
||Width 430x height 110x depth of 250mm