Pioneer SX -1010 Récepteur
Fabricant:
Modèle:
SX -1010
Date:
0
Catégorie:
Groupe:
Description:
Stereo Receiver

Information

FM Front End With Dual-Gate FET’s, Buffer Amp FM tuner’s sensitivity, overload resistance (ability to receive very strong signals without distortion), image rejection and spurious rejection are determined chiefly by the front end. In the SX-1010, latest Components and circuit technology have been employed to bring all these values close to their theoretical limits: three dual-gate MOS FET’s, RF amplification, and the inclusion of a buffer Amplifier between local oscillator and mixer stage. In all performance characteristics, the SX-1010’s FM Tuner compares favorably with the world’s most advanced specialized tuners. It hardly needs to be mentioned that the FM dial is of course divided into equal “linear” intervals and that dual tuning meters — signal strength meter and zero-center meter — are provided for easy, precise tuning. Ceramic Filters And IC’s In IF Stages For Sharp Selectivity A total of four ceramic filters in the IF (intermediate frequency) stages give Sharp selectivity and never need to be realigned. Integrated circuits functioning as limiters provide stable operation and excellent capture ratio (the ability to distinguish between a wanted and an unwanted signal on the same station band). Quadrature Detection, Phase Lock Loop (PLL) Stereo Demodulator Detection of the frequency-modulated signal is performed by the “quadrature” method with a balanced-bridge type differential amp. This costly design assures linearity throughout the frequency band and reduces distortion to the minimum. In the MPX circuit, a phase-lock-loop (PLL) circuit design is used to give clear, stable separation at any audio frequency. The circuit is equipped with an 1C (replacing six transistors) in a bridge configuration. All IC-Equipped AM Section With Linear Dial Only very few receivers can boast a linear station dial even on AM — the SX-1010 is one of them. The AM circuitry uses integrated circuits in all stages for sensitive, stable and clear reception. Balanced Positive And Negative Power Supply With Heavy-Duty Components The power supply unit — backbone of any Amplifier — is of the most elaborate type such as used anywhere in home-use audio equipment, with balanced dual polarity supply and extra large 18,000μΡ capacitors. This results in a tremendous reserve of power for transient peaks, but also eliminates the irritating switching noise often encountered in less professional designs. PHONO Equalizer With Wide Dynamic Range And Extremely Close Tolerances The incoming phono signal from a Turntable is equalized precisely according to the international RIAA standard playback curve — within 0.3 dB of the ideal. Moreover, the phono inputs can accept relatively strong signal levels without distortion (250mV rms), resulting in a wide dynamic range. This is due to the circuit design with three direct-coupled amplification stages including a differential amp in the first stage. Twin Tone Controls Permit Precise “Shaping” Of Sound The overall frequency response curve can be controlled in a total of seven ways. Twin controls in the bass range permit variation at 100Hz by ±10dB in 2dB steps, and at 50Hz by ±5dB in 2.5dB steps; similarly, the high controls give ±10dB correction in 2dB steps at 10kHz, and again ±5dB correction at 20kFlz in 2.5dB steps. All tone controls can be removed from the circuit (by setting the TONE switch at OFF) if desired. High and Low filters are provided for solving specific noise problems, while the Loudness switch boosts the very low and high frequencies at soft listening volumes, giving a more natural sound contour. In one word: the SX-1010 gives you complete mastery over what you hear. Direct-Coupled Power Amplifier Supplies High Output Power With Minimum Distortion An all-stage direct-coupled design with two differential amp stages and three Darlington circuits, purely complementary and without output capacitors (OCL), the Amplifier delivers a floor-shaking — watts of music power (or 100W per channel rms, between 20Hz and 20kHz, at under 0.1% harmonic distortion). The power reserve is, in a single word, abundant. ... Plus A Wealth Of Auxiliary Features And Circuits Dolby* inputs and outputs permit connection of an outboard Dolby noise reduction unit, for example, to receive Dolby-encoded FM programs. Two tape monitor circuits allow two tape decks to be used for recording, playback and tape-to-tape duplicating. Microphone inputs on the front panel let you use the SX-1010 as a public address Amplifier. Audio muting switch decreases the volume instantly by 20dB without having to turn back the volume control. Indicator lamps light up in accordance with the functions used, telling you at a glance what you’re hearing and how. Dimmer switch dims illumination of tuning dial, tuning meters and indicator lamps, leaving only a softly glowing light in the dark.

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manuel de réparation
Type manuel:
manuel de réparation
Pages:
72
Taille:
5.41 Mbytes (5673551 Bytes)
Langue:
english
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Manuel-ID:
74BO2M61 D
Date:
Qualité:
Document scanné, tous les lisible.
Date de transfert:
2013 04 07
MD5:
d7cc7dab83986e793864177c7aa88c1b
Téléchargements:
1023