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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





Pioneer TX-700 tuner

Solid State AM/FM Stereo Tuner with FM Preset Tuning Convenience.
The TX-700 has new FET FM circuitry that gives it improved sensitivity and selectivity am reception is also excellent. With the station presetting feature, up to 5 FM stations will pop in individually at the touch of a button, and manual tuning is convenient, too. The TX-700 also includes a very accurate time-switching type demodulator in the FM multiplex section that provides wide frequency response and natural stereo separation. A full complement of controls and connections make the TX-700 very versatile. It's tuner that is just as much a pleasure to operate as it is to hear.

Features:
New FM Circuitry
FET in the front end of the TX-700 and variable capacitance diodes in the entirely new tuning circuit provide much better sensitivity and selectivity, tuning is easier even in areas of station-crowding.
FM Preset Tuning
With the manual tuning knob OFF, you can preset up to 5 FM stations by means of the individual tuning meters and dial scales. After once presetting, tuning in is quickly accomplished by a simple touch of a push-button.
FM IF Section
The TX-700 incorporates integrated circuits in the FM intermediate frequency section - limiting and capture ratio are much better than in conventional FM stages.
Manual Tuning
With the manual tuning knob ON, AM or FM stations can be tuned very accurately by dialing. For manual tuning, the tuning needle lights up on the dial scale.
FM Multiplex Section
A highly accurate time-switching type demodulator in the multiplex section provides excellent separation and frequency response. The TX-700 also has an FM MPX noise filter to keep noise out of FM stereo reception, a muting switch on the front panel to eliminate interstation noise, and FM mono-stereo automatic selection.
Am Tuner section
The TX-700 has a ferrite loopstick antenna on the rear panel plus connections for a long-wire antenna for improved AM reception.
Output Level Control
In addition to tape recording output terminals, there is an output level control permitting perfect compatibility with other amplifiers.
Styling
The appearance of the TX-700 is clearly, attractively, contemporary. The TX-700 blends particularly well with pre- and main amplifiers Pioneer Model S.C.-700 and SM-700

Specifications
FM Section
Circuitry:
Preset Tuning and Manual Tuning, mechanism employing Varacator (Variable Capacitance Diode)
RF-Amplifier circuit with an FET
Frequency Range:  87,5 to 108 MHz
IHF Sensitivity:  2,2 µV ( at 98 MHz)
Capture Ratio:  1,8 dB (at 98 MHz)
Selectivity:  35 dB (at 98 MHz)
Image Rejection:  60 dB (at 98 MHz)
Signal-to-Noise Ratio:  better than 52 dB
Antenna Input:  300 Ω  Balanced
FM MPX Section
Circuitry:  Time-switching type demodulator FM mono-stereo automatic selection
Channel Separation:  42 dB (at 1,000 Hz)
AM Tuner Section
Circuitry:  Superheterodyne
Frequency Range:  525 to 1605 kha
IHF Sensitivity:  10 µV
Image Rejection 40 dB (at 1,000,000 Hz)
Antenna Input:  Built-in ferrite loopstick antenna
General
Power Supply:  110, 120, 130, 220 and 240 V (switchable) 50/60 Hz
Power Consumption:  11 V A
Dimensions (W x H x D):   370 x 118 x 337 mm (10-9/16" x 4-5/8" x 13-1/4")
Weight:  5,6 kg (12 lb 5 oz) net


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