Pioneer SX-3800 manual Eix-3El00I, Semiconductors, Miscellaneous, FurnishedParts

Page 4

AM Tuner Section

 

 

 

(lHF,

Ferriteantenna). 300pV/m

Sensitivity

{ l H F ,E x t . a n t e n n a.} . .

1 5 p V

S e l e c t i v i t y

 

 

. . . . . 3 0 d 8

S i g n a l - t o - N o i s e B a t i o

. . . . 5 0 d B

l m a g e R e s p o n s e R a t i o

. . . 4 0 d B

l F R e s p o n s e R a t i o . .

. . . . 4 0 d B

A n t e n n a

 

. . . . F e r r i t e l o o o s t i c k a n t e n n a

Audio Section

 

 

 

 

Output(Level/lmpedance)

 

 

F M ( 1 0 0 % M o d . ) .

 

. . . . .

6 5 0 m V lk1i l o h m s

A M ( 3 O % M o d.. )

 

. . . . . 2 0 0 m V / 1 k i l o h m s

Semiconductors

 

 

 

f C s . . .

 

. . . . . . . 1 7

F E T s .

 

. . . . . . . 6

T r a n s i s t o r s

 

 

. . . , . 7 1

D i o d e s

 

. . . . . . . 5 8

Eix-3El00I

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Miscellaneous

P o w e r R e q u i r e m e n t s P o w e r C o n s u m p t i.o n D i m e n s i o n s

Weight(withoutpackage)

. . . . A C i 2 0 V , 6 0 H z

. . . 2 0 0 W ( U L l

. . . . 5 0 6 { W } x 1 6 4 { H x) 4 3 4 { D } m m

1 9 - 1 5 1 1 6 ( Wx6)- 7 / 1 6

( H )x 1 7 - 1 1 1 6 (iDn) 16 . 2k9(351b12oz)

;

t

FurnishedParts

 

Operatinginstructions. . . .

. . . . . 1

F M T - t y p e a n t e n n a

. . . . . I

*Measured Dursuant to the Federal Trade Commission's Tnde Regulation rule on Power Output Claims for Amplif iers,

NATE:

Specifications and the design subject to poisible modifications without notice due to improvements.

t t t rl t rl

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Contents Sefvice nual FM Ouartz Locked SixSTEREORECEIVER-gaooContents H H T H HP E C T F T C a T I O N S To 20000Hertzt02dB Or, iori ,ro i ,ouFM TunerSection OdBEix-3El00I SemiconductorsMiscellaneous FurnishedPartsTront Panelfacilities SpERrERswtrcHEsGnlcHrNEss @sELEcroR @ bunnrz LocKEDtNDtcAToR@ volunnEcoNTRoL GRl-Rr\cE @coNTRoLBlock Diagram 1l , or@f--q-*@ LhTjl 68-llSwitchins,is.rc-1q/ t h L CompositesignalFig 1 Choppertype switchingcircuit CircuitdescriptionsSx-gaoo Fig 5 Blockdiagramof PD5009 G 6 D 1 D 5 t i m e d i v i s i o np u l s es i g n a l sMode B l e1Signal lndicatorCircuit Fig .4 7 SIGNALindicatordrivecircuitFig 9 Poweramplifier Excellent high frequency characteristicscompara Ble lo those of a small-signaltransistor.FurtherMore,becanselhere is no time clonstantin the NFB Circuit ir-rthe lorv-frecluencyregion, amplificationFig .4 12 Power indicatorcircuit O W E R N D I C a T O RC I R C U I TDeenergized, thus causing the output circuit to Become de-energized,thus causing the ourpurOverloadDetector Overload detector circuit incorporatesDisassembly Front panel Bonnet case Bottom plateParts Locatton Front View with PanelRemovedRearPanel AKE.O54TUNERAssy GWE-133 +I t i tIa.i Rrprro&ffi+ + D16l$ll1rl IlIlE0UALIZERAssy AWM-227 INDICATORAssy AWV-OO9LiTtFTTTTTTT- - 1 * l l l l t t Tii I tRtrf TONECONTROLAssyTttt,,.,i%hi*i*U E i t t l i 6 Y# x r , o AI I h-l # *n8lr rorAL2oowMAx LmfiiOl!6 - j,r-l*-,,-s-l = # . = - r?tA tlDzrT 4u- @ *ronce $r-ffir Nffi3lilli FfTJ-ir S5flsBottomView Top ViewIFuse64 GWEN i n gd r u m Dialshaft Startingpoint Dialpointer I a L C O R D S T R I N G I N GDial pointer ArrrrTl AdjustmentsGK 6 MPXsignalgenerator ConnectSIGNALmeteror DC voltmeterTo FM300n ANT terminals AC voltmeter Distortionmeter R E Ct e r m i n a lAC voltmeter To RECterminal R a n t e n n ac o i l AM signalgeneratorTo AM ANT 1kfl resistor TerminalFis .8 AFosc,lt ,-d + u t FJaJtuL6LvR5ll \ ,v\ Te ,t . 1FL indicatorassembly VR2*€ @vnrFig .8 PD5009VBZ3OPOSOFMC ExteriorComponentsAAB.24O Interior Components Ro. AEK-rogAcN lrs 25 e6Ae*-\ 228? T SX.SClOl Fr-r rHeat Sink Block H 1 3N n n n t Illl\Usr TunerAssemblyGWE AN,,4SaE6nmr NrrezZPrecautions C65,C66,C70,C71 c63,C64 C303,c304S3,s4 Arc-o72ToneControlAssemblyt G W G 1 4 AWS-146 SwitchAssemblySwitchAssemblyGWS-226 Lynlgt9 9*ie9PowerAmplifierAssemblyGWH-139 Nr21, R12z PowerSupplyAssemblyGWR-j22Ncru-rat 9yqlglt o*lelglSpeakersTerminalAssemblytGWS-222 FL IndicatorAssemblyAWV-009SwitchAssemblytGWS-223 A C K I N G ADHAR8-355 AHD 7s5Stereoreceiver P E C F I C a T I O N SFM Ouartz Locked With exceptionof thissupplementsSrs Contrastof Miscellaneous Parts$ r u r IBi ihl*cr SCHEMATICDIAGRAM,P.C. Board PatternsandRd.*dr q l Parts List Il,*3Lr-l--.q.iliffi 3il3i!11Rtml SX-3EtCO/si/GirSUJl--J 11ffifl€tX-ggtOO/gi/Glrs AWS-148Cl, c2 C3,c4

SX-3800 specifications

The Pioneer SX-3800 is a classic stereo receiver that emerged in the late 1970s, embodying the high-fidelity audio aspirations of its time. As part of Pioneer’s widely respected SX series, the SX-3800 is hailed for its exceptional sound quality, robust construction, and an array of features that cater to both audiophiles and casual listeners alike.

One of the SX-3800's standout characteristics is its power output. It delivers a solid 80 watts per channel into 8 ohms, making it capable of driving a variety of speaker systems with ease. This ensures a dynamic audio experience, with clear highs, rich midrange, and deep bass. The receiver also exhibits low total harmonic distortion (THD) ratings, which means the sound produced is clean and faithful to the original recording.

The SX-3800 is equipped with a high-quality AM/FM tuner, which is known for its excellent sensitivity and selectivity. Featuring a large analog dial, it allows users to effortlessly dial into their favorite stations while the signal strength meter helps in fine-tuning the reception. This tuner is complemented by Pioneer’s proprietary Auto-Seek tuning function, making it easier for users to find and lock onto stations.

In terms of connectivity, the SX-3800 comes with several inputs and outputs, including phono, tape, aux, and multiple speaker outputs, offering flexibility for various audio setups. Additionally, the built-in phono preamp ensures that vinyl lovers can connect their turntables with ease, preserving the rich detail and warmth that analog sources are known for.

Another technological highlight of the SX-3800 is its inclusion of a loudness control feature, which allows users to enhance the low and high frequencies at lower volume levels. This feature is particularly useful for late-night listening or in quieter environments where detail is essential but loudness is not an option.

With its solid construction, vintage aesthetics, and a beautiful wood finish, the Pioneer SX-3800 not only performs well but also adds a classic touch to any audio setup. Its blend of features, performance, and timeless design continues to make it a desirable component in the world of vintage audio equipment. Collectors and enthusiasts appreciate the SX-3800 not just for its sound quality but also for its enduring legacy in the rich history of audio technology.
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