Pioneer GM-920 Service Manual

®) PIONEER'
The Art of Entertainment
¢ GM-920/EW
fui
ORDER NO
CRT1406
coe SOW+SOW
POWER AMPLIFIER
IVi-S
CONTENTS
EW, ES
(GM-G20/ES) crete rere eee er eee ee cere nese ened
SPECIFICATIONS
POWEF SOUICE 0... csescesceceseneeecneneeseeeees 14.4 V DC (10.8 - 15.6 V allowable) These specifications were determined and are presented in accordance
GOUNING SYStOM «0.0.2... ececcseesseeeeseseseseesneatescaceceeseneseseseneneseeees Negative type with specification standards established by the Ad Hoc Committee of Car
Current consumption .... .7 A (at continuous power, 49) Stereo Manufacturers.
Average Current CraWN * oo... ccessscssssesessstesesesceesessscsseessteseesseseeces 2.2 A (4Q)
3.3 A (2Q) Note:
USC ssctsiceelelsesabesuhec cess Sees AA eelici os. ccccintaasalesadctsesdéved cvcnauaatasseatadudatiieatie' 10A Specifications and the design are subject to possible modification without
DIMENSIONS ...........ccesssscsneessscececeresserscsssecsecesses 160 (W) x 41 (H) x 190 (D) mm notice due to improvements.
{6-1/4 (W) x1-5/8 (H) x 7-1/2 (D) mm]
Weight ........ eee cceeetetecteeeeee 1.6 kg (3.5 Ibs.) (Leads for wiring not included) * Average current drawn
Maximum power Output 000... ceeccsecseseecescceseseeeseeesseeeseeeeeee 55 W x 2 (EIAJ)
The average current drawn is nearly the maximum current drawn by this
Continuous power output unit when an audio signal is input. Use this value when working out total
sniansncodaaesaiasyeaniauavanveaansntvedte 25 W x 2 (at 4Q, 20 - 20,000 Hz, 0.5% THD) current drawn by multiple power amplifiers.
hiesdebesSesesi'se « 35 W x 2 (at 2Q, 20 - 20,000 Hz, 0.5% THD)
LOA IMPEDANCE ........ eee ceeeseescsseeeesencesessensecsenceeseeeeeees 4Q (2-8 Q allowable)
Frequency reSPONSE ........c cece e e e t e e e e t e e e e e e e e e e e s e e s 10 - 50,000 Hz (+0 dB, -1 dB)
Signnal-to-noise ratio 2.0... cesccssesscssssseeccsesecsseretscsssees 94 dB (IEC-A network)
Distortion 0... 0.015 % (at 10 W, 1 kHz)
SO Paral essa sivessess sacs caceacexcscsececenseetsscecteccdasentbudonatectovusbesovbedsid 60 dB ( 1 kHz)
GM-920/ES
IMPUIOVOL ass clccniescdceans ec ausestyseepcrceedeaccosecstsuseoucooteesentsc hs Nccedeaass 0.2-2V/8kQ
GM-920/EW
INP ULL OVEl senses eras batons ccsctaveserdeaniens RCA: 0.2 -2 V/8 kQ
DIN: 100 mV / 22 kQ
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE INC. P.O. Box 1760, Long Beach, California 90801 U.S.A.
PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Drive, Markham, Ontario L3R 8E3 Canada
PIONEER ELECTRONIC [EUROPE] N.V. Keetberglaan 1, 2740 Beveren, Belgium
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia TEL: [03] 580-9911
© PIONEER ELECTRONIC CORPORATION 1991
EK JULY 1991 Printed in Japan