SANSUI SC-D55

Commentary

This is a two head cassette deck that uses a direct-drive and direct-drive mechanism with direct-drive and direct-drive mechanisms.

For the mechanism part, a direct drive system in which the drive motor directly turns the capstan is adopted in a 2-mote configuration.
The capstan is directly driven by an FG servo motor, eliminating the troublesome mechanism of rotating the flywheel by a belt drive. In addition, the reel drive uses a simple mechanism without a beltless slip clutch that is used in open reel decks. In both cases, the drive part is small, so energy loss is reduced and the torque of the motor can be transmitted to the reel. Moreover, the performance is improved because the capstan is resistant to external disturbances.

The SC-D55 uses SANSUI's original direct-current system.
In this system, the cassette half is held by a spring to enable accurate head touch of the tape. This system and the direct drive mechanism greatly improve the characteristics.

All フェジ Alloy head using Fedialoy (Fe-Si-Al alloys) is adopted for the recording / reproducing head.

A 2-gap Hi-B ferrite head is used for the erasing head.

Equipped with a 3-step switching type tape selector.

Equipped with a bias fine circuit, the bias can be adjusted by ± 20% according to the tape to be used.

The front panel features a 2-color LED16-dot meter.
This meter is equipped with a Oatley setting mechanism that holds only peak values for 2 seconds and then automatically resets.

Equipped with an FM / MPX filter switch, cutting the 19 kHz pilot signal for beautiful recording.

Full logic control by computer is adopted for the operation system, and various auto operations are realized by the plunger of light operation.
It is equipped with an auto-play function that stops when rewinding is completed and starts playing automatically. In addition, since it is equipped with an auto-repeat function, if you turn on the auto-repeat switch, it is automatically rewound at the end of the tape and repeated playback is possible.
The Memory Auto-repeat / Play function is built-in. If the memory counter is set to 000, it will stop at 999 and play automatically during Oatley Pete / Play rewind and normal rewind.
In combination with the memory counter, you can auto-repeat and auto-play from any place. In combination with the tape lead-in and auto-play, you can skip the head of the tape.

Self-lighting type feather touch key is adopted for operation buttons of all modes, direct change is possible by computer control and operation status can be understood at a glance.

It is equipped with a flashing REC-MUTE switch which can make silent recording part with one touch.
Flashes every 1 second during operation.

Equipped with a tape lead-in mechanism, it can jump over the beginning winding of the cassette tape by exactly a fixed amount with one action.

In combination with the optional timer (sold separately), you can record your absence or play an alarm clock.

Equipped with Dolby NR as a noise reduction system.

The equalizer amplifier section uses a 3-stage direct-coupled circuit.
The recording amplifier uses shunt regulated PP. In addition, separate power supply circuits for the mechanism, logic circuit, and amplifier circuit are used to improve sound quality.

Equipped with halfback lighting that makes it easy to see the remaining amount of tape.

There are 2 color variations of silver and black.

Remote operation is possible by combining with the separately sold remote control unit.

Model Rating

Type	Cassette deck
Track format	4-track, 2-channel recording / playback
Heads	Recollection : フェジアロイヘッド Erasing : Hi-B double-gap ferrite head
Motor	For Capstan : FG Servo / DC Direct Drive For Reel : Electronically controlled DC Motor
Wow flutter	0.035% or less (WRMS)
Quick winding speed	Approximately 75 seconds (C-60)
Frequency Response (Recording / Playback)	Metal Tape : 20 Hz to 19 kHz 25 Hz to 18 kHz ± 3 dB High Bias Tape (CrO2) : 20 Hz to 18 kHz 25 Hz to 16 kHz ± 3 dB Normal Tape (LH) : 20 Hz to 16 kHz 25 Hz to 15 kHz ± 3 dB
Signal-to-noise ratio (recording / playback, 1 kHz, signal level = 3% THD)	Metal Tape : 59 dB or more Metal Tape, Dolby NRon : 10 dB or more improvement at 5 kHz or more
Input Sensitivity / Impedance (0 VU, 1 kHz)	Mic : 0.4mV/200 Ω ~ 5k Ω Line : 70mV/47k Ω
Power level (0 VU, 1 kHz = 160pwb/mm)	Line : 400 mV (maximum output control, 47k Ω) Headophone : 60mV/8 Ω
Bias frequency	85kHz
Power consumption	20W
External dimensions	Width 430x Height 128x Depth 282 mm
Weight	5.8kg
Sold Separately	Remote control unit