VICTOR/JVC DD-V9
¥ 128,000 (released in 1982)
Commentary
This 3-head re-quick reverse deck is equipped with a fine axis reverse system.
A sliding control panel is used for the operation part to realize a simple design.
We have adopted a combination head that uses Senalloy for the recording head and ferrite for the reproducing head.
Also, a 2-gap ferrite head is used for the erasing head.
A rotary head type Fine Axis Reverse System is used for the reverse mechanism.
This mechanism consists of a head mount base and a head holder for the rotating part. It uses a Jewel lock system to prevent distortion by pressing a ruby into the tip of the azimuth adjustment screw that receives the head holder. In addition, a stainless steel clamp plate is wound around the part of the head holder that is in contact with the ruby to improve abrasion resistance. The precision of all parts is on the order of 10 microns, and the precision of die-casting cannot be expected to exceed this precision.
The rotating part uses a special fluorine resin coating with good sliding and excellent temperature characteristics. Unlike oil and grease, there is no change in the friction coefficient, and there is no play even in long-term use. In addition, the 2-point holding structure ensures smooth rotation while minimizing head tip fluctuation.
In addition, the head is not fixed directly to the head holder, but is inserted into the head clamp and press fit into the head holder. This allows not only independent azimuth adjustment in both forward and reverse directions but also head height adjustment. The relative position between the head and tape can be accurately determined in both directions. As a result, the frequency characteristics in both forward and reverse directions and the high-frequency characteristics that tend to fluctuate are maintained in automatic operation.
In addition, the azimuth adjustment screw and head height adjustment screw have adopted a screw pitch of 1 / 2 of the normal screw pitch, achieving high accuracy.
Flipping the tape from A to B is done by an infrared sensor embedded in the guide pin of the tape.
When the light emitted from the light-emitting device hits the splicing tape between the magnetic tape and the reader tape, the light-receiving device detects a change in the light and issues an inversion instruction, with a sound break of only 0.4 seconds.
In addition, reliable operation is possible by judging by the microcomputer.
The mechanism uses a 2-motor full logic and a silent mechanism with a mechanical drive motor. All modes are moved by detecting the position of the cam linked to the mechanical drive motor with a microcomputer.
A pulse servo DD motor is used for the capstan motor.
The servo circuit of this motor employs an FG servo that uses a frequency generator to detect rotation. The VICTOR/JVC method employs an all-around integration type of 160 poles and 80 pulses for this part, making detection errors difficult to occur even if positional deviation occurs. To prevent positional deviation, the FG magnet is coaxial with the capstan, and the magnet is magnetized after the center is held.
In addition, in order to prevent the rotational accuracy from decreasing due to temperature changes and variations in parts, the multi-pride bridge drive circuit absorbs these effects and improves wow flutter.
Equipped with auto REC mute.
When this function is pressed in the REC mode, a silent space of approximately 4 to 5 seconds is automatically set to the REC standby mode. In addition, Victor's unique circuit design allows for no recording from the stop mode.
It is equipped with an index scan, which allows you to scan the A and B sides one after another while playing the head part of the song for 10 seconds at a time.
It is equipped with a blank search so that you can look for blank areas on the tape.
If there is an unrecorded part for 12 seconds or more in the FF state, it is regarded as a blank, and it automatically returns to the end of the song, sends the blank part for about 4 seconds, and stops.
Equipped with 2 memory functions of STOP and PLAY, block repeat between 2 points is possible by using both STOP and PLAY memory in addition to the normal STOP memory and PLAY memory.
In combination with the reverse mode, block repeat across A and B faces is possible.
Equipped with a 4-digital counter, it can be used as a function of direct reading of remaining time on the tape, 4-digit electronic counter, 20-song skip selection and stopwatch.
With the tape remaining time direct reading function, when the tape is reversed, the remaining time on the B side is displayed as soon as it becomes 0 at the end of the tape on the A side and enters the B side, and the minute display flickers when less than 3 minutes.
The 4-digit electronic counter is negative in the reverse direction so that the same number is displayed at the same position on the A side and the B side of the tape.
This is a 20-song jump function. You can select up to 20 songs from both A and B sides. When you select one song, you do not need to specify the number of songs, and you can search directly with the Music Scan button.
The stopwatch function is added across both A and B sides. The display time is automatically held when you stop or pause.
Equipped with a B / E / S tuning system.
This circuit not only supports the three fields of normal, chrome, and metal, but also adjusts the bias, equalizer, and sensitivity for each tape within each category to set the recording condition close to the ideal recording condition. The bias setting emphasizes the MOL (maximum output level) balance of the frequency characteristics, not only flattens the frequency characteristics, but also takes as much linearity and dynamic range as possible when recording.
For B, E, and S tuning, press the start button to start the bias adjustment operation. The optimum point is selected from 16 steps based on the average value of the left and right sides. The equalizer is divided into 16 steps for the high frequency (12.5 kHz) and 8 steps for the middle frequency (4 kHz). The high frequency is recorded twice and the average value is taken, and the L/R-independent settings are made. Sensitivity is also corrected by taking the average value of the left and right sides. These operations take about 15 seconds. When tuning is complete, the tape is automatically rewound to the start position.
As a noise reduction system, Dolby C NR is installed, and noise reduction effect and improvement of high frequency linearity are realized.
The DD-V9 is equipped with Dolby B NR and MPX filter switches, and uses Dolby standard IC to improve operational stability.
Equipped with auto tape select.
Equipped with 2-color FL peak meter with peak hold.
Equipped with timer start mechanism with safety lock.
Remote control terminal is mounted.
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Model Rating
| Type | Stereo cassette deck | ||
| Heads | Recording : SAs Regeneration : ferrite Erase : 2 x2-gap ferrite |
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| Motor | For Capstan : Pulse Servo DD Motor For Reel : DC Motor Mechanism Drive : DC Motor |
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| Wow and flutter | ± 0.07% (Wpeak, EIAJ) 0.035%(WRMS) |
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| Early winding time | Approximately 90 seconds (C-60) | ||
| Frequency Response (EIAJ) |
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| Frequency range (EIAJ, -20dB recording) |
Metal : 15 Hz to 20 kHz Chrome : 15 Hz to 20 kHz Normal : 15 Hz to 19 kHz |
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| Signal-to-noise ratio | NR off : 55 dB (metal, EIAJ) 60 dB (WTD, 1 kHz, 3% 3rd harmonic distortion factor, metal) Dolby B on : 5 dB improvement at 1 kHz, 10 dB improvement at 5 kHz or higher Dolby C on : Approx. 15 db at 500 hz, up to 20 db at 1 khz to 10 khz MOL improvement effect : 4 db improvement at 10 khz |
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| Distortion factor | 0.4% (1 kHz, 3rd harmonic distortion factor, metal tape, EIAJ) | ||
| Channel separation | 40 dB (1 kHz, EIAJ) | ||
| Crosstalk (EIAJ) | 65dB(250Hz) | ||
| Input terminal | Line : 80mV/80k Ω | ||
| Output terminal | Line : 0 ~ 0.5V/5k Ω Headset : 0 ~ 0.6mW/8 Ω (8 Ω ~ 1k Ω compatible) |
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| Remote control terminal | Minihorn jack | ||
| Pwer | 100 VAC, 50Hz/60Hz | ||
| Power consumption | 32W | ||
| Maximum external dimensions | Width 435x Height 110x Depth 277 mm | ||
| Weight | Approx. 6.5 kg | ||
| Sold Separately | Remote Control Unit R-70 (¥ 5,000) |