TRIO KX-700
¥ 49,800 (around 1972)
Commentary
A cassette deck with a built-in Dolby system.
Equipped with a Dolby system that automatically removes hiss noise from the recording and playback units.
The recording unit raises the level of the low level input signal and the playback unit lowers it to the same level as the raised level of the recording unit. Therefore, it is possible to make a difference between the noise component and the signal level, and S/N is improved.
A tape selector is installed so that chrome tapes can be used in the lowest condition.
It is possible to switch between regular / low-noise / chrome and various tapes by one touch switching with push button.
The head uses a super ferrite head sintered by a unique method, and exhibits about five times the hardness of a conventional permalloy head with a thin core piled up.
Synchronous motor with high constant speed stability is used.
Model Rating
| Type | Cassette deck | ||||
| Track format | 4-track 2-channel, stereo / mono | ||||
| Mechanism form | 1-motor synchronous double drive system | ||||
| Tape used | Regular Tape, Low Noise Tape, Chrome Tape C-30, C-60, C-90, C-120 |
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| Head Used | S. F. H two head system for both recording and re-erasing | ||||
| Amp | Solid state preamplifier using 2 FET | ||||
| Tape speed | 4.75cm/sec | ||||
| Wow and flutter | 0.1%(wrms) | ||||
| Frequency characteristic | 25 Hz ~ 16000 Hz (Chrome Tape) 25 Hz ~ 13000 Hz (Regular Tape) |
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| Signal-to-noise ratio |
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| Recording bias | AC system, 85 kHz | ||||
| Erasing method | AC erase | ||||
| Separation | Track to track : 40 dB or more Channel to channel : 40 dB or more |
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| Overall strain rate | 2% or less | ||||
| Input terminal | My Kujac : 2 systems, Minimum input level : 0.3 mv (-68dB) / 600 Ω Line Input : 2 systems, Minimum Input Level : 77.5 mv (-20dB) / 680 Ω |
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| Output terminal | Line output : Specified output level : 0.775 V (100k Ω load) Stereo headphone jack : 8 Ω ~ 16 Ω (for headphones) |
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| DIN connector | Minimum input level : 9.8 mv (-38dB) Specified Output : 0.775 V (100k Ω Load) |
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| Fast-forward and rewind time | 75 seconds or less (C-60) | ||||
| Semiconductor used | FET : 2 Transistor : 30 Diode : 21 |
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| Pwer | 100 VAC, 50Hz/60Hz | ||||
| Rated power consumption | 20W | ||||
| External dimensions | Width 394x Height 117x Depth 288 mm | ||||
| Weight | 6.1kg |