Audio Database

Image of the CT 5050
Commentary

Stereo cassette deck with built-in Dolby system.

It employs the Dolby System, which greatly improves the harsh tape hissing without compromising the sound quality of the source.
The difference between the noise level and the signal level is small, and the recording level is automatically raised when a pianissimo is heard with a tape hiss, and when it is played back, it is returned to the same level as the source, and finally the tape hissing is lowered. This method improves the dynamic range and S/N ratio.

Equipped with a high-sensitivity peak indicator that combines a light emitting diode (LED) with an electronic circuit.
It responds quickly to momentary input overruns and lights up and warns. The lighting level is set to + 4 dB of the peak value.
Since there is a margin of about 10 dB, which is the limit level of distortion, the recording level can be adjusted when it flashes.
Also, when using the Dolby System, use the peak indicator to set the recording level slightly lower so that you can record with low distortion and a wide dynamic range.

In order to take advantage of each tape such as chrome tape, low noise tape, standard tape, etc., a bias / equalizer independent switching type tape selector is adopted.
In addition, a new equalizer (70 μ s) has been adopted for chrome tape to improve SN.

It is equipped with a recording level limiter, which is convenient for live recording. When an over-level signal causes distortion, a limiter amplifier based on the same principle used in broadcasting stations works to prevent sound cracking.

It is equipped with a tape counter with memory rewind. Even when recording or playing back from the middle of a tape, if the counter is set to 000 and the memory rewind is ON, the auto-stop will work at the counter position of 999 when rewinding.

A ferrite solid head with excellent abrasion resistance is adopted for the head, and magnetic loss at high frequency is little, which is advantageous for use of chrome tape.
In addition, the contact surface is elaborately mirror-finished so that the head touch is good and the sound jump caused by dust adhesion is reduced.

Equipped with a contactless auto-stop mechanism that automatically opens when the tape is finished.

Equipped with a tape travel pilot that rotates around the tape as it travels.

It is equipped with a slide-type playback output control that can adjust the output level with one touch.

Equipped with a convenient skip button that allows you to fast-forward at twice the speed while monitoring and to start the tape.

Connect a timer (sold separately) to the power cord, set the mechanism to the recording state, turn the PAUSE button ON, and it will start automatically at the desired time.
Since the pinch roller is separated from the capstan during standby, there is no burden on the mechanism and there is no worry of deformation of the pinch roller.

There are CT 5050 with walnut finish and CT 5050 s with black leather pattern finish.

Model Rating
Type Light motor vehicle set, stereo / mono
Recording system AC bias, 85 kHz
Erasing method AC push-pull system
Heads Recording and Playback : Ferrite Solid
Erasing : ferrites
Motor Electronically controlled DC motor
Quick winding speed About 80 seconds (at C-60)
Uneven rotation (Wrms) 0.12%
Equalizer 120 μ s/70 μ s (at Chrome)
Frequency characteristic General Tape : 30 Hz ~ 13000 Hz, 63 Hz ~ 12000 Hz ± 3 dB
Chrome Tape : 30 Hz ~ 16000 Hz, 63 Hz ~ 13000 Hz ± 3 dB
S/N 48 dB (333 Hz, General Tape, Maximum Recording Level Weighted)
58 dB (5 kHz, general tape, maximum recording level Dolby NRON Weighted)
Input MIC : 0.5 mV ~ 90mV/20k Ω (6 φ Jack), Low Impedance Microphone Available
Line : 50 mv ~ 9V/300k Ω (Pin Jack)
Rec/PB : 15 mv ~ 2.7V/10k Ω (DIN Standard Jack)
Output Line : 300mV/50k Ω (pin jack)
Rec/PB : 300mV/50k Ω (DIN Standard Jack)
Headset : 40mV/8 Ω (6 φ Jack)
Semiconductor used Transistor : 40
FET : 2
Thyristor : 1
Diode : 18 pcs
Zener diode : 4 pcs
Light emitting diode : 1
Pwer 100 VAC, 50Hz/60Hz
Power consumption 13W
External dimensions Width 396x Height 96x Depth 242 mm
Weight 4.8kg
Attachment 2 Pin Cords