Audio Database

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Commentary

This is a stereo cassette deck with improved quality by using various acoustic parts and 3-head laser amorphous head.

The mechanism section is equipped with a reference master mechanism.
The tape drive system employs a closed-loop dual capstan system. To further enhance the advantages of this system, a dispersion resonance type is used to disperse the overlap of wow and flutter peak components.
In addition, a high-precision, high-rigidity zinc die-cast head base is adopted for the head base, and phase accuracy is improved by precise adjustment using optical jigs.
The mechanism is driven by a digital feedback type motor drive mechanism that combines an absolute encoder, a microcomputer and a dedicated DC motor.

The playback equalizer consists of a DC amplifier with two differential stages using Dual FET and Dual transistor and a SEPP output stage. The Dual FET of the first stage is a high-gm type and is ideal for the first stage of a DC amplifier. It realizes a low distortion factor by suppressing SN ratio degradation due to current noise.
The use of a single-chip dual element suppresses DC drift and eliminates the electrolytic capacitor in the NF loop.

Acoustic condensers are used for all signal coupling condensers and power supply parts, and oxygen-free copper wires are used for signal lead wires.
In addition, oxygen-free copper wires are used for power cords to increase electrical conductivity and reduce wire loss and non-linear distortion. We use high-quality parts for sound quality.

The head uses an amorphous magnetic alloy for the core and uses a low-impedance laser amorphous head applying high-precision laser processing technology.
Oxygen-free copper wire is used for the winding of the reproducing head.

It is equipped with an autoloading system that the optical sensor detects when the cassette is inserted and automatically attaches it.
In addition, it is equipped with a power eject that stops the mechanism when the eject key is pressed even during PLAY and ejects automatically.

The head and capstan can be cleaned easily by opening the maintenance flap in the lower part of the cassette slot.

Equipped with a Dolby B/C noise reduction system that reduces tape hissing.

Based on the DIN standard, it is equipped with a wide range FL peak meter that displays -20dB to + 10 dB in 18 steps.

It is equipped with an auto monitor that automatically switches the monitor of Source ⇔ Tape, an auto REC mute that can create a 4-second silent section with one touch, a tape return that automatically performs FF/REW up to counter 0 with one touch, a one touch MS that enables you to easily find the beginning of the next / current song, and an auto tape selector that automatically switches the tape position.

Model Rating
Type Reference master deck
Track system 4-track, 2-channel stereo
Heads Combination Type (Laser Amorphous Recording Reproducing Head)
Ferrite erasing head
Motor Capstan Drive : 1 DC servo motor
For Reel Drive : 1 DC Motor
Wow and flutter 0.025%WRMS(JIS)
± 0.045% W. Peak (EIAJ)
Quick Winding Time (C-60) About 80 seconds
Frequency Response (EIAJ)
Metal Tape : 25 Hz ~ 21 kHz ± 3 dB (-20dB recording)
20 Hz ~ 16 kHz (0 dB recording)
Chrome Tape : 25 Hz to 20 kHz ± 3 dB (-20dB recording)
20 Hz to 11 kHz (0 dB recording)
Normal tape : 30 Hz to 20 kHz ± 3 dB (-20dB recording)
20 Hz to 11 kHz (0 dB recording)
Signal-to-noise ratio 56 dB (EIAJ / peak recording level, acoustic correction)
Dolby off : 57 dB or more (3rd harmonic distortion rate : 3%, audibility compensation)
Dolby B on : 10 dB improvement at 5 kHz
Dolby C on : 19 db improvement (5 khz)
Distortion factor (EIAJ/1kHz, third harmonic distortion factor) 0.8% (Metal Tape)
Input Sensitivity / Impedance Line : 63mV/120k Ω
Output Level / Impedance
(maximum output volume)
Line : 0.63V/3k Ω
Headphone : 0.45mW/8 ohm
Power supply voltage 100 VAC, 50Hz/60Hz
External dimensions Width 457x Height 131x Depth 374 mm
Weight 9.0kg