What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

Technics RS-630

 The art of recording now takes another step forward.
Cassette tape decks have really come into a world of their own, thanks to the many technical breakthroughs accomplished by some very ingenious engineers. The Dolby noise reduction, vastly improved tape heads, peak level check meters, chromium dioxide tape cassettes and stabilized tape transport are just some of the many reasons for the cassette deck's rise into the ranks of top quality high fidelity systems. This should be enough to satisfy even the most professional type of audio fan, but Technics engineers weren't happy. Their constant striving for even better and better systems has produced a real classic in cassette tape decks - the RS-630 where all controls and tape loading are operated from the Front. With the RS-630, you not only have all that's best in the latest cassette deck technology, you have it all there on the front panel, bringing it right into line with your other Hi-Fi components.
 Separate bias and equalization selectors for optimum recording with any type of tape.
The RS-630 can make full use of the quality potential of any kind of cassette tape - be it normal, LH, chrome or the new ferric-plus-chrome types. With its separate bias current and equalization selector switches, optimum conditions can be estabilished for any tape, to give you recordings of even,balanced frequency response, excellent dynamic range and finest signal-to-noise ratio. It's you who chooses the tape - not the machine.

Outstanding peak check meters.
All music contains short sharp signal peaks which are several times more intense than the average signal level. These peaks may well overreach the tape's ability to accommodate them, resulting in distorsion. To avoid this,the deck's recording level may be set to a lower position, but if set too low, tape noise may become noticeable during quieter passages. Accurate adjustment of recording level is then very important, and this is where the unique peak check meters play a major role. These two large, easy to read meters can give both "conventional" level readings (which are more or less averaged readings), and peak check readings where they respond to even the shapest signal peaks.  This will go a long way in making genuinely high quality tape recordings.
 The Dolby noise reduction
The Dolby noise reduction system has greatly improved the quality of cassette tapes by removing much of the background noise. Technics was very quick to adopt the Dolby system as  a standard feature for the discriminating audio fan. The Dolby system removes the hiss-like tape noise, particularly noticeable during the quieter lulls, by boosting high notes duriug recording. In playback, the Dolby circuit reduces the boosted notes back to their previous levels, but at the same time reduces the tape hiss to a much lower, almost inaudible level. It's no wonder that the Dolby system has become a standard feature for the keen audio enthusiasts.

HPF head with extremely long service life.
One of the major drawbacks in any tape recording has been the constant wear and tear on tape heads. But now Technics engineers have also overcome this problem with their extremely long life HPF heads which withstand even the longest wear and tear. They are guaranteed to last at least for 10 years, far beyond the best performance of normal heads.

Output level control
This control is essential if you want to adjust the cassette deck's output to the same level as your tuner and turntable, etc. You will need no further adjustment of your amplifier volume control, and will be free to switch from component to component all at athe same volume.
 Front loading makes cassette decks a full member of the component family
Now you can stack your cassette tape deck righ along, or right on top, pf your other components. Neat and tidy, and space-saving, yet still with the same high quality precision performance as before. Note the flood-lit compartment with its sliding door and easily accessible tape heads for easy cleaning and demagnetization.

Plus a host of other value features.
Auto-stop at end of tape prevents undue strain.
Lockable pause button for quick interruptions of recording or play.
Big, handy play and stop buttons.
Tape transport clearly visible, thanks to illuminated cassette compartment with two mirrors.
Connectors include; mic inputs, line inputs, line outputs, DIN-type Rec/Pb connector, stereo headphones jack.
Track System: 4-track, 2-channel stereo recording and playback
Motor:  1 Electronic speed control motor
1 x HPF head for rec/playback
1 x Ferrite head for erasing
Tape Speed:  4,8 cm/s (1-7/8 ips)
Wow and Flutter:  0,09% (WRMS), ±0,20% (DIN)
Frequency Response:
CrO₂ Tape :  20 - 16,000 Hz (30 - 14,000 Hz DIN)
Normal tape : 20 -14,000 Hz (30 - 13,000 Hz DIN)
Signal-to-Noise ratio:
Dolby NR in :  60 dB (above 5 kHz)
Dolby NR out :  50 dB (signal level 250 nWb/m)
Fast Forward /Rewind Time:  Approx. 90 sec. With C-60 cassette tape.
Inputs Sensitivity/Impedance:
Mic : 0,25 mV/600 Ω -20 k Ω
Line : 60 mV/47 k Ω
Outputs level/Impedance:
Line : 0,42 V/ 50 k Ω over
Headphone : 60 mV/8 Ω
Rec/PB Connection:  5 P DIN type
Power requirements:  90-109/110-125/200-219/220-250 V, 50/60 Hz AC
Power Consumption:  10 W
Dimensions (W x H x D):  410 x 142 x 321 mm (16-1/8" x 5-5/8" x 12-5/8")

Weight:  7 kg (15-3/8 lbs)

Nessun commento:

Posta un commento