Pioneer CT-4
¥ 55,800 (around 1976)
Commentary
This is a stereo cassette deck with full functions such as tape selector, Dolby system, and standby mechanism for voice recording.
The motor is equipped with a DC-motor with a built-in servomechanism using a generator, and a precisely finished capstan and flywheels are driven by flat belt.
Equipped with a tape selector with built-in automatic switching mechanism for chrome tapes with detection holes.
Equipped with a Dolby system that greatly improves tape hissing.
Equipped with a standby mechanism that can record absence and play alarm clock by connecting and setting a separately sold timer.
Built-in full auto-stop mechanism using Hall element.
Model Rating
Type | Stereo cassette deck | ||
Heads | Re-recording : 1 hard permalloy head Erase : 1 ferrite head |
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Motor | One electronically controlled DC motor with built-in generator | ||
Quick winding speed | 85 seconds or less (at C-60) | ||
Uneven Rotation (WRMS) | Not more than 0.08% | ||
Frequency characteristic | General, LH Tape : 30 Hz ~ 14 kHz, 40 Hz ~ 13 kHz ± 3 dB Chrome Tape : 30 Hz ~ 16 kHz, 40 Hz ~ 15 kHz ± 3 dB Ferrichrome Tape : 30 Hz ~ 16 kHz, 40 Hz ~ 15 kHz ± 3 dB |
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S/N |
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Distortion factor | Not more than 1.7% | ||
Input Sensitivity / Maximum Allowable Input / Impedance |
Microphone : 0.23mV/80mV/23k Ω (Compatible Microphone Impedance 250 Ω ~ 30k Ω) Line : 64mV/25V/100k Ω DIN : 10mV/3.6V/2.2k Ω |
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Reference output level / maximum output level / Impedance |
Line : 450mV/800mV/50k Ω DIN : 450mV/800mV/50k Ω Headphones : 60mV/107mV/8 Ω |
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Semiconductor used | Transistor : 49 (For Motor Electronic Control : 3) FET : 4 pcs Diode : 38 Pieces (For Motor Electronic Control : 1 Piece) Zener diode : 3 pcs Light Emitting Diode : 3 |
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Pwer | 100 VAC, 50Hz/60Hz | ||
Power consumption | 15W | ||
External dimensions | Width 380x Height 150x Depth 316 mm | ||
Weight | 7.5kg | ||
Attachment | 2 stereo connection code One Head Cleaning Kit |