Pioneer qx 646 brochure
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Page 1
rqFGi4,€n IPOWER AMP. SECTTON Rer- HEAT SINK I CD-4 DEMODULATOR SECTION AM/FM TUNER SECTION r POWER SUPPLY ELECTROLYTIC CAPACITOR POWER TRANSFORMER INPUT TERMINALS SPEAKER TERMINALS FERRITE BAR ANTENNA ANTENNA TERMINALS CD.4 CARRIER LEVEL CONTROLS CD.4 SEPARATIOhI CON] POWER SPEAKEHS OI REAR SPEAKER SEI TUNING KNOB MODE SWITCH FUNCTION SWITCH CONTROL (FRONT LEFT/RtcHT, FRONT/REAR, REAR LEFT/RtcHT)
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BUILT.IN CD.4 DEMODULATOR You can play CD-4 discrete records with the QX-646 without adding an extra demo- dulator. This is because the CD-4 demo- dulator is built-in to the QX-646, equipped with FETs and lCs for stable performance at all times and reliability for usage over long period of time. The unit is also equipped with a CD-4 carrier level control and sepa- ration controls to per- mit optimum balance and adjustment of the CD-4 system by the use of CD-4 test re- cord that comes in with the receiver. TWO KINDS OF MATRIX DECODING ln addition to the CD-4 demodulator, the QX-646 provides two kinds of matrix decoding modes. One is the regular matrix position, the other is the SQ matrix decoder. With the mode knob set at the "REGULAR MATRIX" position, you can play all records encoded in this mode and thus choose from almost r all the important program sources now available at your favor- ite record store. With the mode set at "SQ" position, you can also play the entire catalog of SQ matrix encoded program sources. Of course, with the QX-646 hooked up to a four-chan- nel tape deck, you can also play all four-channel discrete tapes, giving you total versatility in the wonderful world of four-channel and a choice of all the important four-channel program sources. AMPLIFIER SECTION For its practical price, the QX-646 delivers abundant power, continuous power output of 10 wattsx4 (at lKHz) at 8 ohms with all four-channels driven. This output gives you rich, clean four-channel sound in any regular-sized music listening room. Additionally, the QX-646 features a single-ended push-pull type output circuitry, with silicon transistors distin- guished by high efficiency and low-distortion charac- teristics. FM TUNER SECTION High sensitivity and selectivity are the hallmarks of the FM tuner section of the QX-646, which features a number of im- portant features for excellent FM sound. lts FM dial scale is the extra-wide linear type, and there is an extra-large signal strength meter employed for easy, precise tuning. The front end section of the tuner is equipped with the latest in elec- tronic circuitry, including an FET (FietO Effect Transistor) and lCs and ceramic filters in the important lF section. The result of this expensive circuitry is sensitivity of 2.2ttV (lHF)- but, most important, FM broadcasts that are always received with clarity. Moreover, irritating inter-station noise is cancelled during the tuning function because the QX-646 is equipped with an FM muting switch. VERSATILE CONTROL FUNCTIONS You'll take one look at the QX-646 and think it costs twice its price. Among its many control functions are individual bass and treble controls that permit individual adjustment for both front and rear channels. There are three different barance controls (front/rear, front left/front right, and rear lett/rear right) so that optimum sound balance of the four independent channels of your system is achieved with ease. ln addition to these important controls, the QX-646 also provides outstand- ing versatility. With its multiple input jacks you can connect a turntable, tape deck and one other auxiliary program source such as a cassette tape deck. The unit also lets you connect an additional pair of speakers to the rear channels, making it possible for you to enjoy four-channel sound with different speaker systems. The QX-646 is also supplied with a loudness switch that lets you adjust for a natural sound contour at all low volume levels. OTHER FEATURES The QX-646 includes program source illumination on the upper part of the tuning dial (FM, AM, PHONO, AUX) that indicates which source is being played. The choice of three four-channel program modes (CD-4, SQ, RM) is also illumi- nated. The entire unit is mounted in an attractive wooden cabinet, the better to make it the showpiece of your music system, and, for that matter, of your entire music listening room. ( 1[|rrloNEER'