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


Modes: Compact cassette, 2-channel stereo/mono
Recording System: AC bias system (bias frequency: 85KHz) Erasing System: AC push-pull system Heads: "Ferrite Solid" recording/playback, head x 1, Ferrite erasing head x 1
Motor: Electronically-controlled DC motor
Wow and Flutter: Less than 0.10% (WRMS)
Fast Winding Time: Approximately 80 seconds (C-60 tape)
Frequency Response: Standard tape; 30 to 13,000 Hz, (40 to 12,000 Hz ±3dB): Chromium dioxide tape; 30 to 16,000 Hz (40 to 13,000 Hz ±3dB)
Signal-to-Noise Ratio: Dolby off; 48dB (standard tape), Dolby on; 58dB (over 5KHz, standard tape) *With use of chromium dioxide tapes, signal-to-noise ratio is further improved by 4.5dB over 5KHz
Harmonic Distortion: Less than 2% (at 333Hz, 0dB)
Inputs (sensitivity to maximum level/impedance): MIC (6mm jack); 0.2mV to 90mV/20 Kohms *Low-impedance (600 ohms) microphones can be used. LINE (pin jack ) ; 60mV to 9V/470 Kohms: REC/PB ( DIN jack); 6mV to 2.7V/ 10 Kohms
Outputs (level/impedance, at meter 0dB): LINE (pin jack); 300mV/50 Kohms: REC/PB (DlN jack); 300mV/50 Kohms, HEADPHONE (6mm jack); 40mV/ 8 ohms
Semiconductors: Amplifier section: Transistors; 37, Diodes; 23, lCs; 2, Zener Diodes; 5, Light Emitting Diodes; 2, FETs;2, Motor control section: Transistors; 2, Diode; 1
Power Requirements: U.S.A. and Canada model; 120V 60Hz only or 110, 120, 130, 220, 240V (switchable 50-60Hz) *No need for pulley changing between 50Hz and 60Hz areas
Power Consumption: 15 watts (max.)
Dimensions: 430(W) x 138(H) x 310(D) mm, 16-15/16(W) x 5-7/16(H) x 12-7/32(D) inches
Weight: 8.5 Kg /18lb. 12oz.

The new Pioneer CT-F7171 is proof positive of a new level of sophistication in stereo cassette deck design and performance. First, it is a front-access deck, with the tape compartment located on the front panel. This unusual design - blends perfectly with other Pioneer components and enables uniform in-rack mounting without wasting space or sacrificing convenience. The ingenious, jam-proof tape compartment positions a loaded cassette at a 30⁰ -degree angle to facilitate access; a switched compartment illuminator allows instant confirmation of tape condition and travel direction. lts front-access design also means that all switches, meters and controls are sensibly situated in logical, user-oriented relation to the tape compartment on the front panel.
And the versatility of the Pioneer CT-F7171 is equally advanced. There is a built-in Dolby noise reduction system, Bias/EQ switches for normal or special-type tapes, a switched Recording Limiter, LED recording and Peak Level indicators, Memory Rewind, a Skip Button for high-speed tape search, rotary level controls, and much more. As for performance, the Pioneer CT-F7771 exhibits minimum wow/flutter (less than 0.10% WRMS), thanks to its electronically-controlled DC motor and precision capstan(roundness error 0.1 fi, while its ferrite-solid head adds to your assurance of high signal-to-noiseratio, wide frequency range and minimum distortion. Advanced electronics and daring design-the frontaccess CT-F7171 stereo cassette deck with Dolby is altogether a new direction in hi-fi tape equipment, from Pioneer.

All necessary deck operations including tape loading and unloading, are performed on the front panel. This daring design-a new direction in cassette deck thinking-enables you to mount the CT-F7171 in a component rack or on shelves along with your receiver, tuner, amplifier or other components.
There's no need to waste space by providing vertical (top) access to the tape compartment or controls. The ingenious, jam-proof tape compartment itself is slanted at an angle of 30* to facilitate confirmation of tape condition, aided by a switched compartment iIluminator.

Pioneer has developed a unique, simple-to-use Peak Level Indicator which detects the peak level of an incoming signal within a few milliseconds. The LED (Light-Emitting Diode) indicator will never flicker or burn out. lt reacts more quickly and with more sensitivity than any level or VU meter to the exact level of transient peak signal reaching the recording head. lt lights t o warn you when the peak level of input is +4dB from reference level, particularly handy when making Dolbyized re-cordings with low-distortion and wide dynamic range.

Noise-free recording and playback performance are assured by the Type B Dolby circuitry in the CT-F7171 By boosting certain portions of the highfrequency spectrum during recording, and deemphasizing them during playback, "tape hiss" is almost completely eliminated while those highfrequency sounds you should hear are allowed to come through clean and clear. A separate Dolby indicator and a simple push-button Dolby switch provide all the control you need.

Stability of tape travel and reliability of transport mechanisms are the most decisive factors in high fidelity cassette deck performance. Pioneer therefore has applied the finest tape transport techniques available in the CT-F7171, a double-sure combination of a highprecision capstan shaft (roundness error 0.1µ) and a dependable DC drive motor electronically controlled with a kind of servo-mechanism using solidstate devices to maintain precise drive voltage and stable rotation unaffected by power supply fluctuations. As a result, the wow/flutter characteristics of the CT-F7171 have been reduced to a ratio of less than 0.10% (WRMS)

The CT-F7171 performs perfectly with any cassette tape you wish to usestandard, low-noise/high-output or the types which are coated with special chrome and/or ferrite compounds. There are two front-panel switches, each with two positions (normal/chrome); the BIAS switch provides optimum bias current for low-distortion, while the EQ switch controls the "70 µs" playback equalizer in the CT-F7171 (for use with chrome dioxide tapes) to provide an improvement in the signal-to-noise ratio by approximately 4.5dB (over 5 KHz) when measured against the normal "120 µs" type.

Anothers imple-to-use front-panel switch handles the built-in recording level limiter circuit in the CT-F7171. Distortion caused by over-level signals during recording is avoided by first setting the input level to optimum (using the large level meters and the Peak Level Indicator), then switching on the automatic limiter. This is the same kind of circuit used in studio-type equipment, not the ALC (automatic level control) design found in portable type recorders, and is therefore suitable for high fidelity use.

Extended recording and playback life, greatly improved fidelity and other advantages are assured by the ferrite-solid REC/PLAY head used in the CT-F7171. The surface of this extra-hard, precision-gap unit is mirror-finished so that a smooth, constant head-to-tape contact is maintained, even with stiff chromium dioxide tapes. The head material and design repel dust and have very small magnetic loss in the critical high-frequency region.

The CT-F7171 is equipped with two additional convenience features. One is the Memory Rewind function: with the front-panel Memory switch "ON", set the three-digit tape counter to "000" at the point on the tape from which you want to record (or play). When the tape has been recorded (or played) as far as you want it to go, flick the rewind switch and the tape will return to the "999" position - in other words, to the place where you started. The handy Skip Button also is easy to use: with the deck in the playback mode, a touch of the Skip Button will allow you to hear (monitor) the recorded sound at twice-normal speed, helping you to quickly locate any portion of the tape you desire.

To assure that your recordings are able to reproduce the widest possible range of audio signals, Pioneer has included a recording amplifier of wide dynamic range. Maximum allowable MIC input is 9V with sensitivity of 0.2mV. Maximum allowable LINE input is also 9V against a sensitivity of 60mV.
(1)Standard-size professional microphone jacks (not the miniature pin-jack types) and stereo headphone jack on front panel.
(2) Recording Peak Level Indicators. (LED)
(3) Large, reliable level meters.
(4) Rotary, friction-coupled input and output level controls for left and right channels with reference index markers.
(5) Two pairs of input/output terminals, DIN standard jack and unswitched AC outlet (300W max.).
(6) Distinctive front-access design, natural deluxe wood cabinet and metallic front. All dimensions matched for installation with other Pioneer high-fidelity components( amplifiers and tuners).

Additional Features:
1. Tape selector (NORM-CHROM) with independently-switchable bias and equalizer
2. Built-in Dolby system (ON-OFF) with indicator lamp
3. Full-auto stop mechanism
4. "SKlP" button that enables quick monitoring at twice-normal speed.
5. Recording LED peak indicators
6. Recording limiter( ON-OFF) Operates at +4dB level from reference level
7. Memory rewind switch (ON-OFF)
8. Cassette bed illumination light and switch
9. Two pairs of input and output terminals
10. Independent recording and playback level controls with memory markers
11. Wooden cabinet

Nessun commento:

Posta un commento