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T Do You Really Hear in Quadraphony? Te: Musings on the Four -Channel Scene

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T Do You Really Hear in Quadraphony? Te: Musings on the Four -Channel Scene c o >J t Do You Really Hear in Quadraphony? te: Musings on the Four -Channel Scene www.americanradiohistory.comAmericanRadioHistory.Com he reason Pioneer's tuners and amplifiers keep getting better. To i-Eproved for audio requirement ach eve linearity and pother output every P INPUT VS OUTPUT, SIN & DISTOREION transient response. plus aosolute stability, a -d a maximum number of inputs and RB.B 1m OUTPUT LEVEL MONO RBIIB each amplifier -as a 3 - o to witn it. Tables 2 and 3. o -stage, direct Atruts go See imaiddimääämäämäädiürffieäämääre coupled eqL 3lir+e'-amplifie section mo uo DUMMY ANT IMP 3610.4 BAL TYPE B as well as a first stage differential The Tuners: TX-9500,TX-7500 -V.'°iCB CARRIER 111.311111RIBRBBIBB MOD REOREOON NtoIOW amplifier. By using low noise transistors in BBriB OUTPUT LEVEL: 00,2V MUM Tlallk new in styling and appearance, the critical f -st stage cf the equalizer (ar aa1, OUTPUT TERMINAL VVRIUELE BBB these pioneer tuners are loaded with E BRR FET, in the SA -g9:0), an exceptional level \Bt1EfUBBBBBBEºB u nit refinements that finally allow you to 110\11911: of phono per'ormance, heretofore c BBRRBBBBBBB -eal ze :he full static -free, high fide ity BIIINBr!9 unatta rable in in:egrated amplifiers, is BEUB\7B Bat\BBR99BBRRBBB oo:e itial of FM and stereo FM. They even BillaAuuRM attained. See Tab''e 1 Preampli'ier SIN STER© BRIM for norosre AM reception. uuivaERBErRB section hi plights. Boa. ./elleillaBITEI MM6IMM Ideellll DISTORTION STEREO The TO s0 110 Tape -to --ape duplicating and FM front end - key to sensitivity 011,N) 10 20 30 60 50 60 80 100 12) (10.«) 11mV1 (100.,V1 monitoring and noise -free reception NPUT LEVEL IN dB (OdB=1PV Two tape ncnit=r circuits are incorporated n -he TX-9500 three dual -gate MOB FETs in each nodel and include tape copying ccmoined with a inear 5 -section variable 8 -stage limiters switch positions for dubbing from ore capaci.or reject all forms of interference High selectivity and good capture ratio are deck to arot-er wt ile listening to another by er incredible ' 10dB. Desired signals vital with tocay's crowded FM radio band. progra-r source. of as little strength as 1.5 microvolts are Pioneer's TX-9500 IF section. with its eoe ved with noise and distortion suffi- Advanced chassis layouts for seven ICs, `cur ceramic filters ani 8 -stage improved ciently suppressed to make them lis -enable. limiter provides outstanding capture ratio performance and increased reliability and y. Prase Lock Loop (PLL) circuitry for selectivi You hear the station you Input and output terminals on the want - and nothing else. SA -9900 and 3A-9500 are segregated from stabile stereo FM separation each other by beirg located at opposite -re Phase Lock Loop circuit used in both Unique muting controls sides of :he chassis. More important, the rei uners insures optimum separation The two-posRion variable muting control full rea- of the chassis serves as a heat cf all a Jdio frequencies. Completely on the TX -95:0, as well as the mu-ing radiatirc surface End reduces the length cri i -`ree, this PLL circuit requires no switch on the TX -7500, emplo/ electronic cf internal shielded wires. The result less aliznment - ever. A sharp low-pass filter switching. Bcth utilize a silent, reed -relay attenuation of hich frequency audio signal;. let you tape FM programs without which eliminates noises of turn -or popping Pioneer' nsK amplifiers provide int_rference from audible "beats and interstathn tuning. , N N TX -7500 .e...... .7 UM...oLAE SA-7500 *The values shown are for informational ',to-poses only. The act, a resale prices will be set by the individual Pioneer realer at his option. Optional eabir ets are available for all models shown and are constructed VII h wood grained walnut Sentir top and side panels. www.americanradiohistory.comAmericanRadioHistory.Com Dedication. And it s the kind of dedication that prevents current overload and guarcr Vol_ can select thousands of ndividual gi res you the opportunity to own high against speaker shr. rts. A thermal tone settings on tie SA -9500, SP -85C0 detection circuit protects power output and SA -7500, too. A tone defeat switch oi fidelity components :hat offer more transistors in each model. all model;: instantly restores wideband flat p3we-, sensitivity and features at frequency response. Satter values. Components that not The control amp' fier section: tw u To contro' settings are calibrated only neet, but exceed the challenges stepped tone cortrols and selectable iorp-ecise repeatability in discrete 1.5dB tonal steps tie SA -9900. All four models posed by changes and improvements turnover for precise tailor 3 oi With Pioneer's exchisive twin tone control -eature IcN and nign frequency liter (w th in current broadcasting and system (SA -9900, SA -8500), you car make mult ple settings `o- each on the SA -3900 recording technology. the most critical and precise bass anc and SA -9500). Tl a master volume control Pioneer recogn zes that high treble adjustments with ease. 5.9291znal on the SA -9900 aid SA -9500 is a 22 -step -93:0. orafessicnal attenuator. It is f delity enthusiasts a re also a variations are possible on the SA omplernented by a selectable muting dedicated group. That's why we invite sw tch for loweri-g sound levels without you to examine the new Pioneer altering vaster volume settings This tuners and amplifiers now. feature a so permits easy settings of the master volume control regardless of Tie Amplifiers. SA -9900, program source levels. High phono overload capab.lity SA -9500, SA -8500, SA -7500 AK for unprecedented dynamic range Twin stepped tone controls. (SA -9900, et -9500 The power amplifier section Gcod phcno sensitivity in a phcno equali- Esch model is direct -coupled in all stages ze- is no enough to insure cistortion-free fer lover distortion ant wider reproduction of sigh transieit musical frequency response. The SA -9900 uses a peas. Until now a 150 millivolt overload 2 -stare differential amplifier and optimized >4fi capab lity was considered to be quite good r_gat ve feedback froc output to input for fo- a phcno preamplifier -equalizer circuit. iTprcved stability anc transient response. Pioneer's SA -9900 remarkable equalize-- A nev-ly developed bias system compen- '111L1 -.*-2-73- anplif e- can handle peak sgnals as s =tes for any tempera -gyre drift; while an Selectable turnover tone controls. high as E00 mV. That's 46 d3 g -eater than automatic electronic p-otection circuit (SA -9500, SA -75001 its noni -al 2.5 rnV input sensitivity. SA -8500 SA -99C0 www.americanradiohistory.comAmericanRadioHistory.Com Why would Pioneer change the world's best-selling tuners and amplifiers? The entire world of high fidelity acknowledged that Pioneer's SA -9100 integrated amplifier and TX -9100 stereo tuner were the best products of their type and value ever built. They established new standards for high fidelity performance. In fact, people recognized their greatness by buying more of them than ary other tuners and amps in the world. Why then would Pioieer want to change these top -performing, top -selling components? There can only be one answer: Reviet+ C St 00oCL9.v£ecncs . .. rs k'-. 4e,Lt0i ...,... .-._... e....é aom. 4 -.+ c ) -. / .___ C. .. _ _ Ile ... -.. _. .. N`3M ..,........ A/bN/7 ..tts -2ectoc-nenoe e. so acan exceVeocet?nCithe matvi buy barter n the NaY oo- svdttc.t<woze obi perforrrianze extces acd so oc...so emetettri than is achieveable oPtg ;éce with Uselkt.tha-weEct.]'P TX-9700 the most 3YCtn9 s at otaucmo^acdwese.' any price." . _ _.-____..-.__-___---! :7 7 !º '1 -. , , \\ t it \t www.americanradiohistory.comAmericanRadioHistory.Com State-of-the-art features (1) Amplifiers: Preamplifier section Of course both new Fioneer tuna's have SA -9900 SA-9500 SA-8500 SA -7500 selectable deemphasis (25uS or -75µS), a Phono Overload 503!1000 mV 250/500 mV 200/400 mV 200 mV must for -stening to the newer De by FM S/N. Ratio 70dB 70dB 70dB 70dB and stereo FM broadcasts. Both have Dynamic Margin 46dB 40dB 38dB 38d13 separate-ixed and varable outpu_ termin- RIAA Accuracy ±0.2dB ±0.2dB 0 3d 0.3dB als, too, -ar adjusting I stening level to Input Impedance 35K, 50K, 35K, 50K, 5CK 50K match ot-er program sources. Ir addition 70K, 100K, 70K, 100K, to the sicaal-strength and cente -ef- selectable selectable channel -"meters, both tuners fealu-e sep- arate output terminals which can be (2) Amplifiers: Inputs and outputs connected to an oscil oscope. This permits No. of Inputs -S/N Ratio SA -9900 SA -9500 SA -8500 SA -7500 visual km ng for best reception and lowest Tape Monitor 2-95dB 2-90dB 2-90dB 2-90dB multipatf interference Phono 2-70dB 2-70dB 2-70dB 2-70dB The-X-9500 has a built-in nemrding Auxiliary 2-95dB 2-90dB 1-90dB 1-90dB signal level check. Use it to set recording Microphone 1-65dB 1-65dB 1-65d B 1-65dB levels on your tape deck for bes- resu'ts Tuner 1-95dB 1-90dB 1-90dB 1-90dB before yeJ recorcing. start Outputs For tie great specs that ma -ca great performance, see Tabe 4. Speakers, Headsets 2+1 2 1 1 2+1 Tape Decks 2 2 2 This new series of tuners and amplifiers is unquestionably the nost (3) Amplifiers: Power output specifications technical y advanced aver deve qped. SA -9900 SA -9500 SA -8500 SA -7á00 It represalts the high 9delity indLstry's Min.
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