Pioneer qx 8000 a owners manual
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Extracted text from pioneer qx 8000 a owners manual (Ocr-read)
Page 1
FEATURES ACOUSTICAL FIELD REPRODUCTION FROM 4.CHANNEL STEREO The amplifier section consists of four separate channets having excellent frequency response and very low distor- tion, providing for 4-channel discrete reproduction of a 4- channel source (recorded tape). CHOICE OF MATRIX DECODER The OX-8000A offers a choice of two decoders; the regular matrix and the SO matrix. The source may be a matrix recording or FM broadcast of a matrix recording. The result is realistic 4-channel reproduction. MATRIX CIRCU IT FOR OR DINARY 2-CHAN- NEL STEREO Use of the internal matrix circuit enhances the effect of or- dinary 2-channel stereo source material, over and above that normally obtainable. ALSO WORKS AS STANDARD 2-CHANNEL STEREO RECEIVER lf you only have one pair of speakers now, you can use the OX-8000A as a regular 2-channel stereo receiver and add the other two speakers at a later date. PERMITS 4-CHANNEL OR 2-CHANNEL TAPE RECORDING lf you already own a 2-channel stereo tape deck, you can go on using it for recording and playback as before. How- ever, if you plan to buy a 4-channel tape recorder, you can use fully the discrete 4-channel capabilities, playing back 4-channel pre-recorded tapes with true 4-channel sound. FULLY EOUIPPED WITH 4-CHANNEL AUX- ILIARY CONTROLS AND INPUTS There are three balance controls: front left-right balance, rear left-right balance, and front-rear balance. These give you complete control over the 4-channel sou nd f ield. Also, separate stereo headphones for the front and rear channels are provided-important when monitoring 4- channel tape recordings. Other features include "speakers in operation" indicator lamps, program indicator lamps, loudness switch, high and low filter switches, FM muting switch, 300Q and 75O (coaxial) FM antenna terminals, and a 4-position channel mode selector. VERSATILE TAPE-TO-TAPE DUPLICATING FACILITIES Normal 2-channel tape-to-tape dubbing is possible too, as well as 4-channel tape-to-tape duplicating. FET-EOUIPPED FM TUNER The FM tuner is equipped with an FET in its front end to improve selectivity and sensitivity. Also, the lF stage employs one hybrid and one monolithic lC, replacing numerous transistors, ceramic filters, etc., and raising the tuner's sensitivity and selectivity. The FM MPX decoder works according to the time switching system and boasts excellent channel separation. Tuning is made easy by the linear FM dial and the double (signal strength and center zerol tuning meters. BUILT-IN AM FERRITE BAR ANTENNA Sensitive and highly directional. An outdoor AM antenna is not required in most cases. LOW-DISTORTION, HIGH-POWER AUDIO AM- PLIFIER Both tone controls and equalization amplifier operate with a generous amount of negative feedback for improved f re- quency response accuracy and flatness. The power amplifier is a quasi-complementary design, a tried-and-true circuit construction. ALL NEW ''4-CHANNEL'' EXTERIOR DESIGN Cabinet and control panels are visual symbolizations of the Pioneer "4-channel" concept, with a recessed, framed, square tuning dial, a modernistic and logically arranged control panel, and the famous silver-black-wood Pioneer color styling.
Page 2
PION ETI COMPOSITION OF A 4.CHANNEL STEREO SYSTEM To compose an ideal 4-channel stereo system, the QX-8000A, a solid state AM/FM stereo receiver, can be combined with four speaker systems, tape decks, turntables, etc. as shown in Fig. 1. If electronic crossover network (separately available Pioneer SF-500 or SF-700) is installed as shown in Fig. 2, e 2-way multi-amplifier system can be set up. PERFORMANCE OF OX-8OOOA 4-CHANNEL STE REO PER FORMANCE With a 4-channel stereo tape deck or cartridge tape player installed, the QX-8000A can provide a discrete 4-channel playback of programs recorded on tape. 4.CHANNEL REPRODUCTION FROM MATRIX 4-CHAN- NE L SOURCE The self-contained matrix circuit permits 4-channel reproduc- tion from matrix 4-channel records or FM stereo broadcasts. The mode switch has positions for regular matrix and SQ matrix reproduction, allowing reproduction to take either of these forms. MATRIX REPRODUCTION FROM 2-CHANNEL STEREO SOURCE A 2-channel signal from a record of FM broadcast can be reproduced in 4-channel form via the regular or SQ matrix circuit. In this case, the result is an improvement over ordi- nary 2-channel stereo reproduction. z-CHANNEL STEREO PER FORMANCE Conventional 2-channel stereo performance can be pro- vided through an arruutgement or two speaker systems in the front; Ieft-side speaker system and right-side speaker system. A 2-way multi-amplifier system can be set up by installing an electronic crossover network (see Fig. 2). STEREOHEAD-PHONES SPEAKER SYSTEMS Fig. 1 rAPE DEcK ,ii?'JJ?$E- ox-8000A ELECTRONICCROSSOVERNETWORK (SF-7O0 or SF-5OO) SPEAKERSYSTEMS High-range Low-range High-ra nge Low-range Fis.2