Audio Database
X-355
Commentary

A stereo tape recorder that uses a cross field head.

Cross-field head is used for the head part.
In this head, the signal current is applied to the recording head, and the bias current is applied to the external bias head. These heads are positioned at predetermined spatial positions relative to each other so that the signal recorded on the tape is not adversely affected by the bias field.

A hysteresis synchronous motor is used for the capstan in the mechanism section, and an induction motor is used for rapid feed and rewind.

An all-transistor solid-state amplifier is used for the amplifier section.
In addition, an amplifier arrangement by a card system is adopted.

Equipped with automatic reverse function of dial and pin system.

It is equipped with functions such as automatic repeat, automatic stop and automatic shutoff.

Sound on sound, sound with sound, sound over sound, and so on.

It is equipped with an echo device.

Recording of FM multiplex broadcasting is supported.

Equipped with a recording monitor function.

Remote control is possible.

Wow flutter is removed by double stabilizer.

Equipped with a tape lifter.

It can be horizontal or vertical.

There were 2 kinds of variations, X-355 and X-355D.
The X-355D is configured without the main amplifier block and built-in speakers from the X-355.

Model Rating
Type Tape deck
Tape speed 9.5cm/s, 19cm/s
38cm/s (Adapter Used)
Wow flutter (play only) 0.08% RMS or less (19cm/s)
0.14% RMS or less (9.5cm/s)
Tape velocity deviation + / - 0.3% for each tape speed
Frequency characteristic 30 Hz ~ 24 kHz ± 3 dB (19cm/s)
30 Hz ~ 18 kHz ± 3 dB (9.5cm/s)
Total harmonic distortion factor 4.0% or less (10W, 1 kHz, 0 VU)
Signal-to-noise ratio 47 db or More (Positive Direction)
45 dB or More (Reverse Direction)
Crosstalk Mono : -82dB or less
Stereo : -45dB or less
Input level Mic : 0.5 mV or more
Line : 50 mV or more
Output Music power : 25W + 25W
Undistorted output : 20W + 20W
Recording bias frequency 90kHz
Recording level indication 2 x VU meter
Recording system 4-track stereo / monaural, cross field bias system (Japanese Patent No. 451906)
Fast-forward and rewind method 45 seconds each (370m tape, 50 hz)
36 seconds each (370m tape, 60 hz)
Maximum use reel 10 type reel
Heads Recording head : 4-track stereo / monaural (low impedance 135 Ω (1 kHz))
Bias Head : 4-track stereo (low impedance 750 Ω (90 khz))
Playhead : 4-Track Stereo / Monaural (Low Impedance 1000 Ω (1 kHz)) with Automatic Up / Down
Erase Head : 4-track stereo (low impedance 750 Ω (90 kHz))
Motor For Capstan : Hysteresis Synchronous 2 Speed Motor
For Fast Forward / Rewind : 2 x 4-pole induction motors
Spekers 2 x 16 cm cone
Semiconductor used Transistor : 26
Requestor : 3 pcs
Diode : 3 pcs
Power supply voltage 6-step switching between 100 V ~ 240 V AC, 50Hz/60Hz
Power consumption 60 VA ~ 170 VA
External dimensions Width 440x Height 407x Depth 310 mm
Weight 28.5kg
Attachment One #7 demonstration tape
Number 7 automatic reel x1
Two reel adapters
15 inch Adapter
2 spare fuses (1A)
Sold Separately 10 1/2inch Reel Adapter EA-10 (¥ 6,500)
Remote Control RC-11 (¥ 5,000)
Dynamic Microphone DM-13 (¥ 3,800)
Condenser Microphone CM-15 (¥ 70,000)