AKAI 4400D
¥ 56,000 (around 1972)
Commentary
4000 series tape deck with output volume added to 4000 ds.
The head section uses a 3-head system. By using a dedicated head for erasing, recording, and playback, it is possible to realize high-performance recording and playback while simultaneously monitoring recording.
A 1 μ gap head has been adopted for the head, and excellent characteristics are ensured by providing a gap of 1/1000 mm ultra-precision processing.
The drive motor is equipped with a 4-pole induction motor.
Equipped with a tape selector, it is compatible with low noise tapes.
It is equipped with the sound-on-sound function, and it is possible to record multiple recordings by transferring the recordings previously recorded in one track to other tracks and superimposing several recordings.
The line and microphone inputs are designed independently for mixing recording and sound with DIN input for sound with sound mixed with line input.
Equipped with a temporary stop mechanism, tape travel can be stopped temporarily while recording / regenerating condition.
The unit is equipped with an automatic shut-off mechanism. When the tape comes to a wound or cut area, the shut off switch turns off the power of the whole unit.
Uses a 2-lever operation mechanism.
Equipped with a VU meter.
This meter is linked with a monitor switch and automatically changes to the input level and playback level of the program source.
Equipped with a 4-digit index counter.
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Model Rating
| Type | Tape deck |
| Track system | 4-track 2-channel stereo / monaural system |
| Reel | No. 7 |
| Tape speed | 19cm/s, 9.5cm/s (± 2%) |
| Wow and flutter | 19cm/s : 0.15% Wrms or less 9.5cm/s : 0.2% Wrms or less |
| Recording (playback) compensation characteristics | NAB characteristics |
| Frequency characteristic | When using AKAI S. R. T. tape 30 Hz ~ 22 kHz ± 3 dB (19cm/s) 30 Hz ~ 16 kHz ± 3 dB (9.5cm/s) When using standard tape 30 Hz ~ 20 kHz ± 3 dB (19cm/s) 30 Hz ~ 14 kHz ± 3 dB (9.5cm/s) |
| Distortion factor | 1.5% or less (1 kHz, 0 VU) |
| Signal-to-noise ratio | 50 dB or more |
| Erasure rate | 70 dB or more |
| Recording bias frequency | 100kHz |
| Heads | 3 heads (record, play, erase) |
| Motor | 4-pole induction motor |
| Fast-forward rewind time | 190 seconds (370m tape used) |
| Recording time | 2-hour stereo recording (9.5cm/s, 370m tape used) |
| Input Sensitivity / Impedance | Microphone : 0.8mV/5k Ω Line : 60mV/150k Ω |
| Output Level / Impedance | Line : 1.23 V (0 VU) / 100 Ω (optimum load impedance 20k Ω or more) Headphone : 30mV/8 Ω |
| DIN jack | 50 mV or more (Low), 50 mV or more (High) |
| Semiconductor used | Transistor : 11 Diode : 4 pcs |
| Integrated circuit | Linear ICs : 4 units |
| Power supply voltage | 100 VAC ~ 240 V, 50Hz/60Hz |
| Power consumption | 35W |
| External dimensions | Width 412x Height 355x Depth 194 mm |
| Weight | 12.5kg |
| Attachment | Dust cover Empty reel Connection code x2 Set Spare fuse |