Audio Database

Image of CT 4040 e
Commentary

This is a stereo cassette deck with improved recording characteristics and enhanced functions for ease of operation.

Equipped with a Dolby system that greatly reduces noise without compromising the sound quality of the recording source.
When the Dolby system is in operation, the indicator lamp lights up.

It is equipped with a LINE/MIC input circuit switch. If this switch is set to LINE, the input from the FM tuner or pre-main amplifier can be directly applied to the line amplifier without passing through the microphone amplifier.
Also, when recording live using a microphone, you can record with the switch set to MIC.

Equipped with a BIAS/EQ independent tape recorder that enables the optimum combination of bias and equalizer according to tape characteristics such as standard, low noise, chrome, and ferrichrome.

Equipped with a memory rewind switch, you can easily listen to the same song repeatedly or find the beginning of the song you want to listen to.

Equipped with level control for independent recording and playback.

The motor is an electronically controlled DC motor using an electronic circuit combining a transistor and a diode.
The motor rotation speed is kept constant by an electronic circuit, suppressing uneven rotation caused by voltage fluctuations and load fluctuations, and maintaining constant speed.

The head uses a permalloy solid head that has approximately 10 times more wear resistance than conventional permalloy heads.

Equipped with a non-contact type full auto-stop mechanism that automatically opens the mechanism when the tape is finished and does not damage the tape or mechanism.
It is also equipped with a direct change operation button that can be set to PLAY from the FF / REW status.

Model Rating
Type Compact cassette deck
Recording system AC bias, 85 kHz
Erasing method AC push-pull system
Heads Recording and Playback : Permalloy Solid
Erasing : ferrites
Motor Electronically controlled DC motor
Quick winding speed About 80 seconds (at C-60)
Uneven rotation 0.12% or less (WRMS)
Frequency characteristic General LH Tape : 30 Hz ~ 12.5 kHz, 63 Hz ~ 10 kHz ± 3 dB
Chrome Tape : 30 Hz ~ 15 kHz, 63 Hz ~ 12 kHz ± 3 dB
S/N Dolby off : 49 dB (general, LH tape)
Dolby on : 59 dB (General, LH Tape, 5 kHz or higher)
When using chrome tape : 4.5 dB improvement (over 5 kHz)
Input MIC : 0.3mV/50k Ω (6 φ Jack, Applicable Microphone 600 Ω ~ 30k Ω)
Line : 63mV/50k Ω
DIN : 14mV/1.8k Ω
Output Line : 450mV/50k Ω
DIN : 450mV/50k Ω
Headset : 50mV/8 Ω (6 φ Jack)
Semiconductor used Transistor : 36 Pieces (for Motor Control : 2 Pieces)
FET : 2
Diode : 21 Pieces (For Motor Control : 1 Piece)
Zener diode : 3 pcs
Attachment mechanism Dolby system
Tape selector
Memory rewind mechanism
Full autostop mechanism
Large tape running pilot
Pwer 100 VAC, 50Hz/60Hz
Power consumption 13W
External dimensions Width 397x Height 110x Depth 245 mm
Weight 4.6kg
Attachment One stereo pin plug
Cleaning kit