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Specifications and schematic for vintage Pioneer SA708 amplifier
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SPECI FICATIONSSemiconductorsf C s . . . 3FETs . 2T r a n s i s t o r s . . . . . 4 1Diodes 31Ampli f ier Sect ionContinuous Power Output 0f 65 watts. perchannel , m¡n. , at 8 ohms from 20 Hertz to20,000 Hertz wi th no more than 0.02 %total harmonic d istor t ion or 65 watts perchannel at 4 ohms from 20 Hertz to 20,000Hertz wi th no more than 0.03% totalharmonic d istor t ion.Cont inuous Power Outpuf at lkHz (both channels dr iven)
T.H.D. 0.02o/o,8 ohms . . 70 wat ts per channelTotal Harmon ic D istortion (20 Hertz to 20,000Hertz,
8 ohms, f rom AUX)continuous rated power output . . No more than0.02o/o32.5 watfs per channel power output
. . . No more than 0.02%I watt per channel power output . No more than0.02o/o
Intermodulat ion Distor t ion (50 Hertz : 7,000 Herfz = 4:1 ,8 ohms, f rom AUX)continuous rated power output . . No more than 0.02o/o32.5 wat ts per channel power output
. . . . . N o m o r e t h a n 0 . 0 2 %1 watt per channel power output . No more than0.02oA
Damping Factor(20 Hertz to ,20,000 Hertz, 8 ohms) . 35
I nput (Sensi t iv i ty / l mpedance)PHONO . 2 .5mV/50k i l ohmsTUNER . . 150mV/50k i l ohmsA U X . . . 1 5 0 m V / 5 0 k i l o h m sT A P E P L A Y l , 2 . . . . . . . 1 5 0 m V / 5 0 k i l o h m sTAPE PLAY 2 (DlN connector) . . . 150mV/50ki lohms
Phono Over load Level (T.H.D. 0.01%, l kHz)P H O N O . . 2 0 0 m V
Output (Level / l mpedance)T A P E R E C 1 . . . . . l 5 0 m V / l k i l o h mT A P E R E C 2 . . . . . 1 5 O m V / l k i l o h mTAPE REC 2 (DlN connector) 30mV/80ki lohmsSpeaker . A, B, A+B (4 - l6ohms)
Frequency ResponsePHONO (RIAA Equal izat ion)
20Hz to 20.000H2 10.2d8
Tone ControlB A S S . . . . + 7 . 5 d 8 , - 7 . 5 d 8 ( 1 0 0 H 2 )TREBLE +7 .5d8 , _7 .5dB (10 ,000H2)
Subsonic F i l ter . 15Hz ( -6dBloct)Loudness Contour (Volume control set at -40d8
posi t ion) . . . . . . . . . +6dB (100H2),+3dB (10,000H2)Hum and Noise ( lHF, shor t -c i rcu i ted, A network)
P H O N O . . . . 8 6 d 8. TUNER, AUX, TAPE PLAY . . IOOdB
Hum and Noise (DlN cont inuous power/50mW)PHONO 70dB/60d8TUNER, AUX, TAPE PLAY . 86dB /61d8
Mut ing -20d8
Miscel laneousPower Requirements
HA mode l . . 220V .50160H2H R m o d e l . . 2 4 0 V , 5 0 1 6 0 H 2S, S/G models 1 10V/1 20V 1220V 1240V, 50/60H2
Power Consumpt ionH A , H R m o d e l s . . . . 6 0 0 WS, S/G models 190W
D i m e n s i o n s . . . . 4 2 0 ( W ) x 1 5 0 ( H ) x 3 3 7 ( D ) m m16-9116(w) x s-7 l8(H) x 13-1 l4(D) in
Weight (wi thout package) . . . .9 .7kg(21 lb. 6 oz)
Furnished Parts. O p e r a t i n g i n s t r u c t i o n s . . . . . 1
Fuse 2.5A (S, S/G models only) . . . . 1F u s e 5 A ( S , S / G m o d e l s o n l y ) . . . . . . 1
NOTE:Specifications and the design subject to possible modifi-cations without notice due to improuements.
* Measured pursuant to the Federanl Trade Commísíon'sTrade Regulation rule on Power Output Claims forAmplifiers.
TUNER, AUX, TAPE PLAYlOHz to 50.000H2 t l dB
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