TEAC A-630
¥ 99,800 (around 1976)
Commentary
A 2-motor type cassette deck that inherits the functions and technology of A-650.
The operation part uses push button operation. The push button stroke is 2 mm, and a highly reliable micro switch is used.
The logic control allows direct change from any mode to any mode.
The mechanism section employs a 2-meter mechanism with dedicated motors for both constant speed running and quick winding. This simplifies the transmission mechanisms such as pulleys and idlers and improves durability.
FG servo DC DC motor is used for constant speed running. The structure is the same as PLL, but phase comparison is omitted and rotational error is detected by frequency comparison.
The peak level meter uses a detection circuit that employs a double-wave rectification method so that even real music signals with asymmetric signs can indicate peaks appropriately.
Equipped with a Rec Mute function. If you press the Rec Mute button during recording, silent recording will continue until you press the Pause or Play button.
Timer recording is possible by combining with a commercially available audio timer.
In addition, with A-630, timer playback is also possible if the tape recording prevention claw is folded.
It has a built-in memory counter. If you preset the counter to 000 in advance, it automatically switches to stop / play at the position of 999 when rewinding.
Equipped with a bias and equalizer independent switching mechanism that can obtain a dedicated position suitable for each type of Chrome, FerriChrome and Hi-Fi.
The A-630 supports three types of tapes by combining an independent 2-stage selector switch.
The microphone and line volumes are provided independently, allowing mixing of the microphone and line.
Equipped with a mono / stereo switching mechanism linked to My Kujac. When recording monaural with one microphone, plug the jack into the microphone jack of the L channel to automatically divide the signal to left and right and use it as a center microphone.
Equipped with a Dolby system that reduces tape hiss.
Uses an HD ferrite head with excellent wear resistance.
It uses oil dump eject and can be opened and closed softly.
Uses a removable cassette holder cover for easy maintenance.
Model Rating
| Type | Stereo cassette deck |
| Track format | 4-track, 2-channel stereo system |
| Head configuration | Erasing, recording / playback |
| Tape used | C-60, C-90 Type |
| Motor | For Capstan : FG Servo DC Motor For Reel : Mechanical Governor Type DC Motor |
| Wow and flutter | 0.06% |
| Early winding time | Up to 90 seconds (C-60 tape) |
| Frequency characteristic | 30 Hz ~ 16 kHz (Chrome Tape) 30 Hz ~ 13 kHz (Regular Tape) |
| Signal-to-noise ratio | 57 dB (3% THD level, WTD) Dolby Improvement : 5 dB (1 kHz), 10 dB (5 kHz or more) |
| Input Sensitivity / Impedance | Line : 60mV/50k Ω Microphone : 0.25mV/-72dB/600 Ω or more |
| Output Level / Impedance | Line : 0.3V/10k Ω or more Headphone : 8 Ω |
| External dimensions | Width 440x Height 177x Depth 325 mm |
| Weight | 11kg |