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gm-x1024/x1r/uc bridgeabl four-channel power amplifier gm-x1024 x1r/uc s e r v i c e m a nu a l GM-X924 x1r/uc,ew,es pioneer electronic corporation 4-1, meguro 1-chome, meguro-ku, tokyo 153-8654, japan pioneer electronics service inc. p.o.box 1760, long beach, ca 90801-1760 u.s.a. pioneer electronic [europe] n.v. haven 1087 keetberglaan 1, 9120 melsele, belgium pioneer electronics asiacentre pte.ltd. 501 orchard road, #10-00, lane wheelock place, singapore 23880 c pioneer electronic corporation 1998 order no. crt2191 contents 1. safety information ............................................2 2. exploded views and parts list .......................2 3. schematic diagram .............................................8 4. pcb connection diagram ................................14 5. electrical parts list ........................................19 6. adjustment..........................................................25 7. general information .......................................26 7.1 ic ........................................................................26 7.2 disassembly ...................................................27 7.3 block diagram ..............................................28 8. operations and specifications.....................29 k-fed. mar. 1998 printed in japan
2 gm-x1024,GM-X924 2. exploded views and parts list 2.1 packing 3 5 4 2 10 8 9 6 7 9 fig. 1 1. safety information caution this service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. if you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so and refer the repair to a qualified service technician. w arning lead in solder used in this product is listed by the california health and welfare agency as a known reproductive toxicant which may cause birth defects or other reproductive harm (california health and safety code, section 25249.5). when servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with the solder. also, when soldering do not inhale any smoke or fumes produced.
3 gm-x1024,GM-X924 (1) packing section parts list mark no. description part no. mark no. description part no. note: - parts marked by ??re generally unavailable because they are not in our master spare parts list. - screws adjacent to ? mark on the product are used for disassembly. 1 * 2 screw assy hea0044 3 screw byc40p180fzk 4 polyethylene bag heg0011 5 wrench hlp0001 6 polyethylene bag heg0013 7 carton see contrast table (2) 8 contain box see contrast table (2) 9 protector hhp0025 10-1 owner's manual see contrast table (2) * 10-2 card see contrast table (2) * 10-3 warranty card see contrast table (2) 10-4 owner's manual see contrast table (2) (2) contrast table gm-x1024/x1r/uc, GM-X924/x1r/uc, GM-X924/x1r/ew and GM-X924/x1r/es are constructed the same except for the following: part no. gm-x1024 GM-X924 mark no. symbol and description x1r/uc x1r/uc x1r/ew x1r/es 7 carton hhg0154 hhg0155 hhg0158 hhg0157 8 contain box hhl0154 hhl0155 hhl0158 hhl0157 10-1 owners manual hrd0056 hrd0057 hrd0059 hrd0058 * 10-2 card not used ary1048 not used not used * 10-3 warranty card hry1070 not used hry1087 not used 10-4 owners manual not used not used not used hrd0068 - owner's manual model part no. language gm-x1024/x1r/uc hrd0056 english, french GM-X924/x1r/uc hrd0057 english, french GM-X924/x1r/ew hrd0059 english, french, german, dutch, spanish, italian GM-X924/x1r/es hrd0058 english, spanish hrd0068 arabic, poltuguese (b)
4 gm-x1024,GM-X924 2.2 exterior fig. 2
5 gm-x1024,GM-X924 1 screw(m3 25) hba0013 2 screw(m3 12) cba1323 3 screw(m3 14) cba1382 4 sheet cnm5852 5 screw(m3 5) hba0006 6 screw(m3 8) hba0011 7 screw(m2.6 6) hba0012 8 washer hbf0005 9 case hnb0036 10 separator hnm0046 11 heat sink see contrast table (2) 12 window hns0053 13 lighting conductor hnv0012 14 amp unit see contrast table (2) 15 screw bms30p060fzk 16 screw bms30p080fmc 17 terminal(cn905) ckf1059 18 plug(cn503) cks1039 19 plug(cn553) cks1039 20 connector(cn853) cks3813 21 connector(cn852) cks3814 22 holder cnv4017 23 cord(cn104) hde5500 24 cord(cn304) hde5500 25 bass bar hnc0043 26 bass bar hnc0044 27 bass bar hnc0046 28 bass bar hnc0047 29 bass bar hnc0049 30 bass bar hnc0050 31 bass bar hnc0052 32 bass bar hnc0055 33 spacer hnm0053 34 heat sink hnr0079 35 heat sink hnr0080 36 clamper hnv0003 37 clamper hnv0015 38 spacer hnv3975 39 network unit see contrast table (2) 40 plug(cn501) cks1039 41 plug(cn551) cks1039 42 plug(cn102) cks1621 43 plug(cn302) cks1621 44 connector(cn857) cks3815 45 connector(cn856) cks3816 46 cord(cn502) hde5501 47 cord(cn552) hde5501 48 cord(cn854) hde5501 49 cord(cn855) hde5501 50 holder hnc0029 51 clip hnc0054 52 screw(m3 25) hba0013 53 fan motor cxm1102 54 fuse hek0030 55 pin jack(cn801) hkb0002 56 pin jack(cn851) hkb0004 57 terminal(cn101) hke0010 58 terminal(cn301) hke0010 59 fuse holder(cn902) hke0012 60 terminal(cn901) hke0014 61 holder hnc0027 62 holder hnc0028 63 screw ppz30p060fzk 64 plate unit see contrast table (2) 65 sheet unit see contrast table (2) 66 light pipe unit hxa0201 67 plate unit see contrast table (2) 68 panel unit see contrast table (2) 69 panel see contrast table (2) 70 plate see contrast table (2) 71 panel unit see contrast table (2) 72 front panel see contrast table (2) 73 plate see contrast table (2) 74 screw smz30h080fcr 75 screw bsz30p050fzk 76 film see contrast table (2) 77 film see contrast table (2) 78 led(d903,904) nspwf50s(aq) 79 diode(d961) fml22r 80 diode(d962) fml22s 81 transistor (q112,212,312,412) 2sc1568 82 fet(q963?68) irfiz44n 83 transistor (q115,215,315,415) 2sc5101 84 transistor (q116,216,316,416) 2sa1919 85 thermistor(th901) ccx1027 86 thermistor(th902,903) ccx1035 87-93 94 sheet cnm5950 (1) exterior section parts list mark no. description part no. mark no. description part no.
6 gm-x1024,GM-X924 (2) contrast table gm-x1024/x1r/uc, GM-X924/x1r/uc, GM-X924/x1r/ew and GM-X924/x1r/es are constructed the same except for the following: part no. gm-x1024 GM-X924 mark no. symbol and description x1r/uc x1r/uc x1r/ew x1r/es 11 heat sink hnr0073 hnr0093 hnr0093 hnr0093 14 amp unit hwh0066 hwh0067 hwh0064 hwh0065 39 network unit hwg0008 hwg0009 hwg0006 hwg0007 64 plate unit hxa0262 hxa0112 hxa0112 hxa0112 65 sheet unit hxa0264 hxa0116 hxa0116 hxa0116 67 plate unit hxa0205 hxa0202 hxa0202 hxa0202 68 panel unit hxa0249 hxa0244 hxa0244 hxa0244 69 panel * hnb0064 hnb0038 hnb0038 hnb0038 70 plate * hns0064 hns0039 hns0039 hns0039 71 panel unit hxa0251 hxa0247 hxa0247 hxa0247 72 panel * hnb0066 hnb0043 hnb0043 hnb0043 73 plate * hns0065 hns0046 hns0046 hns0046 76 film cnm5856 cnm5949 cnm5949 cnm5949 77 film cnm5853 cnm5948 cnm5948 cnm5948
7 gm-x1024,GM-X924
8 gm-x1024,GM-X924 a 1 234 b c d 34 a-a a-b a-a a-b a-b a-a large size sch diagram guide page detailed page 3. schematic diagram 3.1 overall connection diagram(guide page) note: when ordering service parts, be sure to refer to ?xploded views and parts list?or ?lectrical parts list? a b c d a-a 12 off off hpf lpf vr501:frequency s501:lpf/hpf vr501:frequency s501:lpf/hpf vr551:frequency s551:lpf/hpf off off vr551:frequency s551:lpf/hpf hpf lpf switching control dc-ac inverter +15v regulator rectification -15v regulator isolator bfc h l 2ch/4ch 2ch 4ch GM-X924/x1r/ew, GM-X924/x1r/es b c d -7.7dbm -10.2dbm -10dbm -14.4db -15.4v +15.4v -42.1v +42.1v -29.0v +29.0v 3.9v 3.9v 14.4v 5v 5v 2.4v 2.4v 14.4v 0v 3.8v 1.8v 2.2v 0v 6.5v d903,d904:nspwf50s(aq)
9 gm-x1024,GM-X924 5 6 7 8 a b c d 5 6 a e f a-b 7 8 fig. 3 power stage over current detector thermo detector / protector over voltage detector / protector mute control regulator control f e a 20.4dbm 0v 0.2v 14.4v 14.2v 10.7v 14.4v 0.1v 3.2v 0.3v 5v 0v 0.2v 0v 14.4v
10 gm-x1024,GM-X924 a 1 234 b c d 2 34 a-a a-a a-b 1 off off hpf lpf vr501:frequency s501:lpf/hpf vr501:frequency s501:lpf/hpf vr551:frequency s551:lpf/hpf off off vr551:frequency s551:lpf/hpf hpf lpf isolator 2ch/4ch 2ch 4ch -7.7dbm -10.2dbm -10dbm -14.4dbm c d b
off s551:lpf/hpf switching control dc-ac inverter +15v regulator rectification -15v regulator bfc h l GM-X924/x1r/ew, GM-X924/x1r/es -15.4v +15.4v -42.1v +42.1v -29.0v +29.0v 3.9v 3.9v 14.4v 5v 5v 2.4v 2.4v 14.4v 0v 3.8v 1.8v 2.2v 0v 6.5v d903,d904:nspwf50s(aq) 11 gm-x1024,GM-X924 5 6 7 8 a b c d 5 6 7 a-a a-b a-a fig. 4 b d 8
12 gm-x1024,GM-X924 a 1 234 b c d 2 34 a-b a-a a-b 1 power stage over current detector 20.4dbm -14.4dbm e f
thermo detector / protector over voltage detector / protector mute control regulator control 0v 0.2v 14.4v 14.2v 10.7v 14.4v 0.1v 3.2v 0.3v 5v 0v 0.2v 0v 14.4v (aq) 13 gm-x1024,GM-X924 5 6 7 8 a b c d 5 6 7 a-a a-b a-b fig. 5 f 8
2ch/4ch input output a b a amp unit b cn856 e cn102 d cn552 c cn502 f cn302 b cn857 14 gm-x1024,GM-X924 a 1 234 b c d 2 34 note for pcb diagrams 1. the parts mounted on this pcb include all necessary parts for several destination. for further information for respective destinations, be sure to check with the schematic diagram. 4. pcb connection diagram 4.1 amp unit a 1
br+ br bl+ bl speaker output ar+ ar al+ al speaker output fu902 backup gnd system control fu901 bfc a b 15 gm-x1024,GM-X924 5 6 7 8 a b c d 5 6 7 capacitor connector p.c.board chip part side a side b 2. viewpoint of pcb diagrams a 8 fig. 6 side a
16 gm-x1024,GM-X924 a 1 234 b c d 12 34 4.2 iso pcb b d cn551 a cn852 b iso pcb c cn501 a cn853 fig. 7 side a
17 gm-x1024,GM-X924 1 2 3 4 a b c d 1 2 3 4 c 4.3 a lpf/hpf pcb 1 2 3 4 5 6 7 8 9 10 s501 lpf/hpf s501 frequency gain 1 2 3 4 5 6 7 8 9 10 s551 lpf/hpf frequency gain s551 d 4.4 b lpf/hpf pcb b cn854 a cn503 c a lpf/hpf pcb d b lpf/hpf pcb b cn855 a cn553 side a side a fig. 8 fig. 9
18 gm-x1024,GM-X924 a 1 234 b c d 12 34 4.5 a p.a. pcb e f 4.6 b p.a. pcb e a p.a. pcb f b p.a. pcb a cn303 a cn103 fig. 10 fig. 11 side a side a
19 gm-x1024,GM-X924 network unit consists of iso pcb a lpf/hpf pcb b lpf/hpf pcb a p.a.pcb b p.a.pcb unit number : hwg0008 (gm-x1024/x1r/uc) unit number : hwg0009 (GM-X924/x1r/uc) unit number : hwg0006 (GM-X924/x1r/ew) unit number : hwg0007 (GM-X924/x1r/es) unit name : network unit miscellaneous ic 501 ic njm2068s ic 502 ic njm2068s ic 503 ic njm2068s ic 504 ic njm2068s ic 551 ic njm2068s ic 552 ic njm2068s ic 553 ic njm2068s ic 554 ic njm2068s ic 851 ic njm2068s ic 861 ic njm2068s ic 871 ic njm2068s ic 881 ic njm2068s q 103 transistor 2sk389 q 104 transistor 2sa992 q 105 transistor 2sc1845 q 106 transistor 2sa992 q 107 transistor 2sc1845 q 108 transistor 2sc1845 q 203 transistor 2sk389 q 204 transistor 2sa992 q 205 transistor 2sc1845 q 206 transistor 2sa992 q 207 transistor 2sc1845 q 208 transistor 2sc1845 q 303 transistor 2sk389 q 304 transistor 2sa992 q 305 transistor 2sc1845 q 306 transistor 2sa992 q 307 transistor 2sc1845 q 308 transistor 2sc1845 q 403 transistor 2sk389 q 404 transistor 2sa992 q 405 transistor 2sc1845 q 406 transistor 2sa992 q 407 transistor 2sc1845 q 408 transistor 2sc1845 q 711 transistor 2sc2458 q 721 transistor 2sc2458 q 731 transistor 2sc2458 q 741 transistor 2sc2458 d 101 diode hzs6l(b1) d 106 diode hzs6l(b1) d 201 diode hzs6l(b1) d 206 diode hzs6l(b1) d 301 diode hzs6l(b1) d 306 diode hzs6l(b1) d 401 diode hzs6l(b1) d 406 diode hzs6l(b1) s 501 switch(lpf/hpf) csh1029 s 551 switch(lpf/hpf) csh1029 vr 501 volume 20k (e) ccs1266 vr 502 volume 10k (a) ccs1265 vr 551 volume 20k (e) ccs1266 vr 552 volume 10k (a) ccs1265 resistors r 103 rd1/4pu223j r 104 rd1/4pu101j r 105 rd1/4pu104j r 106 rd1/4pu101j r 107 rd1/4pu471j r 109 rd1/4pu472j r 110 rd1/4pu621j r 111 rd1/4pu561j r 112 rd1/4pu333j r 203 rd1/4pu223j r 204 rd1/4pu101j r 205 rd1/4pu104j r 206 rd1/4pu101j r 207 rd1/4pu471j r 209 rd1/4pu472j r 210 rd1/4pu621j r 211 rd1/4pu561j r 212 rd1/4pu333j r 303 rd1/4pu223j r 304 rd1/4pu101j r 305 rd1/4pu104j r 306 rd1/4pu101j r 307 rd1/4pu471j r 309 rd1/4pu472j r 310 rd1/4pu621j r 311 rd1/4pu561j r 312 rd1/4pu333j r 403 rd1/4pu223j r 404 rd1/4pu101j r 405 rd1/4pu104j =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ ------------------------- =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ ------------------------- 5. electrical parts list note: - parts whose parts numbers are omitted are subject to being not supplied. - the part numbers shown below indicate chip components. chip resistor rs1/ _ s ___ j,rs1/ __ s ___ j chip capacitor (except for cqs.....) cks....., ccs....., cszs..... d e b c f
20 gm-x1024,GM-X924 r 406 rd1/4pu101j r 407 rd1/4pu471j r 409 rd1/4pu472j r 410 rd1/4pu621j r 411 rd1/4pu561j r 412 rd1/4pu333j r 501 rd1/4pu472j r 502 rd1/4pu472j r 503 rd1/4pu472j r 504 rd1/4pu472j r 505 rd1/4pu103j r 506 rd1/4pu103j r 507 rd1/4pu472j r 508 rd1/4pu472j r 509 rd1/4pu103j r 510 rd1/4pu103j r 511 rd1/4pu103j r 512 rd1/4pu103j r 513 rd1/4pu123j r 514 rd1/4pu123j r 515 rd1/4pu562j r 516 rd1/4pu562j r 517 rd1/4pu123j r 518 rd1/4pu123j r 519 rd1/4pu222j r 520 rd1/4pu222j r 521 rd1/4pu101j r 522 rd1/4pu101j r 551 rd1/4pu472j r 552 rd1/4pu472j r 553 rd1/4pu472j r 554 rd1/4pu472j r 555 rd1/4pu103j r 556 rd1/4pu103j r 557 rd1/4pu472j r 558 rd1/4pu472j r 559 rd1/4pu103j r 560 rd1/4pu103j r 561 rd1/4pu103j r 562 rd1/4pu103j r 563 rd1/4pu123j r 564 rd1/4pu123j r 565 rd1/4pu562j r 566 rd1/4pu562j r 567 rd1/4pu123j r 568 rd1/4pu123j r 569 rd1/4pu222j r 570 rd1/4pu222j r 571 rd1/4pu101j r 572 rd1/4pu101j r 711 rd1/2pm222j r 712 rd1/4pu103j r 721 rd1/2pm222j r 722 rd1/4pu103j r 731 rd1/2pm222j r 732 rd1/4pu103j r 741 rd1/2pm222j r 742 rd1/4pu103j r 851 rd1/2pm471j r 852 rd1/4pu223j r 853 rd1/4pu103j r 854 rd1/4pu332j r 855 rn1/4pc1002d r 856 rn1/4pc1002d r 857 rn1/4pc7501d r 858 rn1/4pc7501d r 861 rd1/2pm471j r 862 rd1/4pu223j r 863 rd1/4pu103j r 864 rd1/4pu332j r 865 rn1/4pc1002d r 866 rn1/4pc1002d r 867 rn1/4pc7501d r 868 rn1/4pc7501d r 871 rd1/2pm471j r 872 rd1/4pu223j r 873 rd1/4pu103j r 874 rd1/4pu332j r 875 rn1/4pc1002d r 876 rn1/4pc1002d r 877 rn1/4pc7501d r 878 rn1/4pc7501d r 881 rd1/2pm471j r 882 rd1/4pu223j r 883 rd1/4pu103j r 884 rd1/4pu332j r 885 rn1/4pc1002d r 886 rn1/4pc1002d r 887 rn1/4pc7501d r 888 rn1/4pc7501d capacitors c 101 ceas100m16 c 102 cqpa221g2a c 107 cqpa102g2a c 108 cftla104j50 c 109 ceas101m16 c 110 cma150j2h c 119 cftla104j50 c 201 ceas100m16 c 202 cqpa221g2a c 207 cqpa102g2a c 208 cftla104j50 c 209 ceas101m16 c 210 cma150j2h c 219 cftla104j50 c 301 ceas100m16 c 302 cqpa221g2a c 307 cqpa102g2a c 308 cftla104j50 c 309 ceas101m16 c 310 cma150j2h c 319 cftla104j50 c 401 ceas100m16 c 402 cqpa221g2a c 407 cqpa102g2a c 408 cftla104j50 c 409 ceas101m16 c 410 cma150j2h c 419 cftla104j50 c 501 ccpusl470j50 c 502 ccpusl470j50 c 503 cftla104j50 c 504 cftla104j50 c 505 cftla104j50 c 506 cftla104j50 c 509 ckcyb101k50 =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ ------------------------- =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ -------------------------
21 gm-x1024,GM-X924 c 510 ckcyb101k50 c 511 ckcyb101k50 c 512 ckcyb101k50 c 513 ceas220m50 c 551 ccpusl470j50 c 552 ccpusl470j50 c 553 cftla104j50 c 554 cftla104j50 c 555 cftla104j50 c 556 cftla104j50 c 559 ckcyb101k50 c 560 ckcyb101k50 c 561 ckcyb101k50 c 562 ckcyb101k50 c 563 ceas220m50 c 851 cqma471j50 c 852 cejanp100m16 c 854 cqma472j50 c 855 ccpusl470j50 c 856 ccpusl470j50 c 857 ccpusl470j50 c 861 cqma471j50 c 862 cejanp100m16 c 864 cqma472j50 c 865 ccpusl470j50 c 866 ccpusl470j50 c 867 ccpusl470j50 c 871 cqma471j50 c 872 cejanp100m16 c 874 cqma472j50 c 875 ccpusl470j50 c 876 ccpusl470j50 c 877 ccpusl470j50 c 881 cqma471j50 c 882 cejanp100m16 c 884 cqma472j50 c 885 ccpusl470j50 c 886 ccpusl470j50 c 887 ccpusl470j50 unit number : hwh0066(gm-x1024/x1r/uc) unit number : hwh0067(GM-X924/x1r/uc) unit number : hwh0064(GM-X924/x1r/ew) unit number : hwh0065(GM-X924/x1r/es) unit name : amp unit miscellaneous ic 505 ic njm2068s ic 506 ic njm2068s ic 651 ic pa2027a ic 801 ic njm2068s ic 951 ic upc494c q 109 transistor 2sa992 q 110 transistor 2sc1845 q 111 transistor 2sa992 q 112 transistor 2sc1568 q 113 transistor 2sc3421 q 114 transistor 2sa1358 q 115 transistor 2sc5101 q 116 transistor 2sa1909 q 209 transistor 2sa992 q 210 transistor 2sc1845 q 211 transistor 2sa992 q 212 transistor 2sc1568 q 213 transistor 2sc3421 q 214 transistor 2sa1358 q 215 transistor 2sc5101 q 216 transistor 2sa1909 q 309 transistor 2sa992 q 310 transistor 2sc1845 q 311 transistor 2sa992 q 312 transistor 2sc1568 q 313 transistor 2sc3421 q 314 transistor 2sa1358 q 315 transistor 2sc5101 q 316 transistor 2sa1909 q 409 transistor 2sa992 q 410 transistor 2sc1845 q 411 transistor 2sa992 q 412 transistor 2sc1568 q 413 transistor 2sc3421 q 414 transistor 2sa1358 q 415 transistor 2sc5101 q 416 transistor 2sa1909 q 611 transistor 2sd1768s q 621 transistor 2sd1768s q 631 transistor 2sd1768s q 641 transistor 2sd1768s q 651 transistor 2sa1048 q 652 transistor 2sc2458 q 653 transistor 2sc2458 q 654 transistor 2sc2458 q 655 transistor 2sa1048 q 656 transistor 2sc2458 q 657 transistor 2sa1048 q 658 transistor 2sb1243 q 691 transistor 2sa1048 q 951 transistor 2sa1048 q 952 transistor 2sc2458 q 953 transistor 2sc2458 q 954 transistor 2sa1048 q 955 transistor 2sa1048 q 956 transistor 2sb1243 q 957 transistor 2sc2458 q 958 transistor 2sd1864 q 959 transistor 2sd1919 q 960 transistor 2sd1919 q 961 transistor 2sb1277 q 962 transistor 2sb1277 q 963 fet irfiz44n q 964 fet irfiz44n q 965 fet irfiz44n q 966 fet irfiz44n q 967 fet irfiz44n q 968 fet irfiz44n q 969 transistor 2sb1566 q 970 transistor 2sd2395 d 102 diode pr3432s d 103 diode pr3432s d 104 diode 1ss133 d 105 diode 1ss133 d 202 diode pr3432s d 203 diode pr3432s d 204 diode 1ss133 d 205 diode 1ss133 d 302 diode pr3432s d 303 diode pr3432s d 304 diode 1ss133 d 305 diode 1ss133 d 402 diode pr3432s d 403 diode pr3432s d 404 diode 1ss133 =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ ------------------------- =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ ------------------------- a
22 gm-x1024,GM-X924 d 405 diode 1ss133 d 611 diode 1ss133 d 621 diode 1ss133 d 631 diode 1ss133 d 641 diode 1ss133 d 651 diode 1ss133 d 652 diode hzs7l(b2) d 653 diode 1ss133 d 654 diode 1ss133 d 901 diode rm4z-lfj5 d 902 diode rm4z-lfj5 d 903 led nspwf50s(aq) d 904 led nspwf50s(aq) d 951 diode 1ss133 d 952 diode 1ss133 d 954 diode hzs12l(a3) d 955 diode 1ss133 d 956 diode 1ss133 d 957 diode hzs16l(1) d 958 diode hzs16l(1) d 959 diode era92-02vh d 960 diode era92-02vh d 961 diode fml22r d 962 diode fml22s d 963 diode 1ss133 l 851 ferri-inductor ctf1007 l 861 ferri-inductor ctf1007 l 871 ferri-inductor ctf1007 l 881 ferri-inductor ctf1007 l 901 choke coil 50? cth1144 l 951 choke coil 200? cth1211 l 952 choke coil 200? cth1211 t 951 transformer ctt1051 th 901 thermistor ccx1027 th 902 thermistor ccx1013 th 903 thermistor ccx1013 th 904 thermistor ccx1035 s 851 switch(2ch/4ch) csh1021 s 901 switch(bfc) see contrast table vr 101 semi-fixed 470 (b) ccp1311 vr 201 semi-fixed 470 (b) ccp1311 vr 301 semi-fixed 470 (b) ccp1311 vr 401 semi-fixed 470 (b) ccp1311 vr 951 semi-fixed 100k (b) ccp1325 vr 952 semi-fixed 100k (b) ccp1325 ef 951 capacitor ccg-081 ef 952 capacitor ccg-081 m 901 fan motor cxm1102 m 902 fan motor cxm1102 fu 901 fuse 30a hek0030 fu 902 fuse 30a hek0030 resistors r 113 rd1/4pu333j r 114 rd1/4pu102j r 115 rd1/4pu390j r 116 rd1/4pu221j r 117 rd1/4pu821j r 118 rd1/4pu561j r 119 rd1/4pu470j r 120 rd1/4pu470j r 121 rd1/2pm100j r 122 rd1/2pm100j r 123 0.1 /5w ccn1090 r 124 0.1 /5w ccn1090 r 125 rd1/4pu221j r 126 rd1/4pu100j r 213 rd1/4pu333j r 214 rd1/4pu102j r 215 rd1/4pu390j r 216 rd1/4pu221j r 217 rd1/4pu821j r 218 rd1/4pu561j r 219 rd1/4pu470j r 220 rd1/4pu470j r 221 rd1/2pm100j r 222 rd1/2pm100j r 223 0.1 /5w ccn1090 r 224 0.1 /5w ccn1090 r 225 rd1/4pu221j r 226 rd1/4pu100j r 313 rd1/4pu333j r 314 rd1/4pu102j r 315 rd1/4pu390j r 316 rd1/4pu221j r 317 rd1/4pu821j r 318 rd1/4pu561j r 319 rd1/4pu470j r 320 rd1/4pu470j r 321 rd1/2pm100j r 322 rd1/2pm100j r 323 0.1 /5w ccn1090 r 324 0.1 /5w ccn1090 r 325 rd1/4pu221j r 326 rd1/4pu100j r 413 rd1/4pu333j r 414 rd1/4pu102j r 415 rd1/4pu390j r 416 rd1/4pu221j r 417 rd1/4pu821j r 418 rd1/4pu561j r 419 rd1/4pu470j r 420 rd1/4pu470j r 421 rd1/2pm100j r 422 rd1/2pm100j r 423 0.1 /5w ccn1090 r 424 0.1 /5w ccn1090 r 425 rd1/4pu221j r 426 rd1/4pu100j r 611 rd1/4pu823j r 612 rd1/4pu105j r 613 rd1/4pu473j r 621 rd1/4pu823j r 622 rd1/4pu105j r 623 rd1/4pu473j r 631 rd1/4pu823j r 632 rd1/4pu105j r 633 rd1/4pu473j r 641 rd1/4pu823j r 642 rd1/4pu105j r 643 rd1/4pu473j r 651 rd1/4pu104j r 652 rd1/4pu103j r 653 rd1/4pu472j r 654 rd1/4pu222j r 655 rd1/4pu472j r 656 rd1/4pu222j r 657 rd1/4pu221j r 658 rd1/4pu102j r 659 rd1/4pu473j r 660 rd1/4pu103j r 661 rd1/4pu103j r 662 rd1/4pu222j =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ ------------------------- =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ -------------------------
23 gm-x1024,GM-X924 r 663 rd1/4pu472j r 664 rd1/4pu472j r 665 rd1/4pu472j r 666 rd1/4pu103j r 667 rd1/4pu472j r 668 rd1/4pu223j r 669 rd1/4pu221j r 670 rd1/4pu152j r 671 rd1/4pu472j r 672 rd1/4pu101j r 673 rd1/4pu223j r 674 rd1/4pu223j r 675 rd1/4pu223j r 691 rd1/4pu223j r 692 rd1/4pu223j r 801 rd1/4pu223j r 802 rd1/4pu223j r 803 rd1/4pu821j r 804 rd1/4pu821j r 805 rd1/4pu103j r 806 rd1/4pu223j r 807 rd1/4pu472j r 808 rd1/4pu472j r 901 rd1/4pu391j r 951 rd1/4pu103j r 952 rd1/4pu223j r 953 rd1/4pu392j r 954 rd1/4pu153j r 956 rd1/4pu153j r 957 rd1/4pu102j r 958 rd1/4pu472j r 959 rd1/4pu472j r 960 rd1/4pu272j r 961 rd1/4pu272j r 962 rd1/4pu272j r 963 rd1/4pu472j r 964 rd1/4pu153j r 965 rd1/4pu182j r 966 rd1/4pu223j r 967 rd1/4pu182j r 968 rd1/4pu123j r 969 rd1/4pu472j r 970 rd1/4pu472j r 972 rd1/4pu104j r 973 rd1/4pu104j r 974 rd1/4pu222j r 975 rd1/4pu472j r 976 rd1/4pu393j r 977 rd1/4pu221j r 978 rd1/4pu332j r 979 rd1/4pu332j r 980 rd1/4pu472j r 981 rd1/4pu472j r 982 rd1/4pu820j r 983 rd1/4pu820j r 984 rd1/4pu820j r 985 rd1/4pu820j r 986 rd1/4pu820j r 987 rd1/4pu820j r 988 rd1/2pm100j r 989 rd1/2pm100j r 990 rd1/2pm470j r 991 rd1/2pm470j r 992 rd1/4pu472j r 993 rd1/4pu472j r 994 rd1/2pm330j r 995 see contrast table r 996 rd1/2pm220j r 997 rd1/4pu101j capacitors c 111 cma150j2h c 112 cftla104j50 c 113 cftla104j50 c 114 cftla104j50 c 115 cma101j2h c 116 cma101j2h c 117 cftla333j50 c 118 cqpa102g2a c 211 cma150j2h c 212 cftla104j50 c 213 cftla104j50 c 214 cftla104j50 c 215 cma101j2h c 216 cma101j2h c 217 cftla333j50 c 218 cqpa102g2a c 311 cma150j2h c 312 cftla104j50 c 313 cftla104j50 c 314 cftla104j50 c 315 cma101j2h c 316 cma101j2h c 317 cftla333j50 c 318 cqpa102g2a c 411 cma150j2h c 412 cftla104j50 c 413 cftla104j50 c 414 cftla104j50 c 415 cma101j2h c 416 cma101j2h c 417 cftla333j50 c 418 cqpa102g2a c 651 220?/10v cch1036 c 652 cftla103j50 c 653 cftla103j50 c 654 ceas100m16 c 655 ceas100m16 c 656 ceas101m16 c 657 cftla103j50 c 658 ceas2r2m50 c 659 ceas220m16 c 660 470?/16v cch1183 c 661 cftla103j50 c 662 cftla103j50 c 691 ceas220m16 c 801 ckpuyb471k50 c 802 ckpuyb471k50 c 803 ceas100m16 c 804 ceas100m16 c 805 ccpusl470j50 c 901 4700?/16v cch1310 c 902 cftla224j50 c 903 cftla104j50 c 904 cftla104j50 c 951 ceas100m16 c 952 ceas221m10 c 953 cqpa102j2a c 954 cftla105j50 c 955 ceas101m16 c 956 cftla474j50 =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ ------------------------- =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ -------------------------
24 gm-x1024,GM-X924 c 957 cftla474j50 c 959 cftla104j50 c 960 cftla104j50 c 961 cqma472j50 c 962 cqma472j50 c 963 4700?/16v cch1310 c 964 ceas332m35 c 965 ceas332m35 c 966 ceas332m35 c 967 ceas332m35 c 968 ceas471m35 c 969 ceas471m35 c 970 ceasr10m50 c 971 ceasr10m50 c 972 ceas470m16 c 973 ceas470m16 c 974 ceka471m50 c 975 ceka471m50 c 976 cqpa102j2a c 995 cftla104j50 c 996 cftla104j50 =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ ------------------------- =====circuit symbol and no.===part name part no. --- ------ ------------------------------------------ ------------------------- contrast table of amp unit gm-x1024/x1r/uc, GM-X924/x1r/uc, GM-X924/x1r/ew and GM-X924/x1r/es are constructed the same except for the following: part no. symbol and description gm-x1024/x1r/uc GM-X924/x1r/uc GM-X924/x1r/ew GM-X924/x1r/es s901 switch not used not used hsh-156 hsh-156 r955 not used not used rd1/4pu105j rd1/4pu105j
25 gm-x1024,GM-X924 6. adjustment no. item conditions adjustment point specifications 1 idling current input ; adjust 30 seconds after 1k w terminate vr101(a lch) mv meter(1) : 20 6mv (adjustment) power is switched on, and within 20 vr201(a rch) seconds. vr301(b lch) vr401(b rch) 2 dc-dc converter input ; adjust 30 seconds after 1k w terminate vr951 mv meter(2) : +29 3v voltage power is switched on, and within 20 vr952 mv meter(3) : ?9 3v (adjustment) seconds. - connection diagram bl 1k w q115 system control gnd power vr952 vr101 vr301 mv meter (1) dc regulated power supply mv meter (1) e c e q116 gnd q315 q316 1k w br e e mv meter (3) amp unit 4 w (2w) +14.4v 4 w (2w) speaker b output q215 mv meter (1) mv meter (1) e c e q216 q415 q416 e e vr201 vr401 1k w 1k w al ar 4 w (2w) 4 w (2w) speaker a output c gnd mv meter (2) + + vr951 fig. 12
26 gm-x1024,GM-X924 7. general information 7.1 ic pa2027a 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 vcc stby det1 det2 det_r gnd nc nc in1 in2 in3 cont_v filter vs_out tc mute_out + - zz 2v + - zz 2v + - zz 2v + - 2v zz + - 2v 20 m a + - zz 2v + - zz 50 m a 4.7k transient voltage detector bandgap circuit motion:on + - 5.6v + - q s r oneshot (1 m sec) bandgap:on switch:on 0.13v
27 gm-x1024,GM-X924 7.2 disassembly - removing the heat sink some silicone glue has been applied between the heat sink and the heat sink(sub). therefore, to remove the amp unit from the heat sink. 1. remove two screws d. 2. remove a lpf/hpf pcb and b lpf/hpf pcb. 3. remove four screws e and eight screws f. 4. use 2 pcs. of screw e and insert them into the two holes marked with an arrow. 5. alternately tighten them little by little until the heat sink(sub) separates from the heat sink. fig. 14 - removing the case and the panel unit 1. remove eight screws a, seven screws b and two screws c. 2. remove case and panel units. fig. 13 case panel unit panel unit heat sink(sub) b lpf/hpf pcb heat sink(sub) amp unit heat sink a c a b a b a a a a a b b b b b c d d e e e e f f f f f f f f a lpf/hpf pcb
28 gm-x1024,GM-X924 7.3 block diagram fig. 15
29 gm-x1024,GM-X924 8. operations and specifications 8.1 operations - gm-x1024/x1r/uc setting the unit gain control adjusting the gain controls a and b will help match the output of the car stereo to the pioneer amplifier. normally, set the switch to the ?ormal?position. if the output is low, even when the volume of the car stereo is turned up, turn these controls clockwise. if there is distortion when the volume of the car stereo is turned up, turn these controls counter- clockwise. if you only use one input plug, set the gain controls for speaker outputs a and b to the same position. set the gain control to ?ormal?when this amplifier is connected to a pioneer car stereo with rca output jacks. if the sound level is too low or distorts, adjust the gain control. adjust the gain control to the ?in?side of ?ormal?when this amplifier is con- nected to a pioneer car stereo (high volt- age output type). power indicator the power indicator lights when the power is switched on. rca input select switch for two-channel input, slide this switch to the left. for four-channel input, slide this switch to the right. cut off frequency control if the lpf/hpf select switch is set to lpf or hpf, you can select a cut off frequency from 50 to 120 hz. lpf (low-pass filter)/hpf (high-pass filter) select switch set the lpf/hpf select switch as follows according to the type of speaker that is connected to the speaker output connector and the car stereo system: lpf/hpf select audio frequency range speaker remarks switch to be output type lpf (left) ?50 to 120 hz sub-woofer connect a sub-woofer. off (center) full range full range hpf (right) 50 to 120 hz full range use if you want to cut the very-low-frequency range because it is not necessary for the speakers you are using.
30 gm-x1024,GM-X924 to prevent damage do not ground the speaker wire directly or con- nect a negative (? lead wire for several speakers. this unit is for vehicles with a 12-volt battery and negative grounding. before installing it in a recre- ational vehicle, truck, or bus, check the battery voltage. if the car stereo is kept on for a long time while the engine is at rest or idling, the battery may go dead. turn the car stereo off when the engine is at rest or idling. if the blue wire of the amplifier is connected to the power terminal through the ignition switch (12 v dc), the amplifier will always be on when the ignition is on?regardless of whether the car stereo is on or off. because of this, the battery could go dead if the engine is at rest or idle. install and route the separately sold battery wire as far away as possible from the speaker wires. install and route the separately sold battery wire and ground wire, speaker wires, and the amplifier as far away as possible from the antenna, antenna cable and tuner. speakers to be connected to the amplifier should conform with the standards listed below. otherwise damage will occur to the speaker. the speaker impedance must be 1 to 8 ohms. (2 to 8 w for stereo, monaural and other bridge connec- tions.) connection diagram connecting the unit caution disconnect the negative (? terminal of the battery to avoid the risk of short-circuit and damage to the unit. secure the wiring with cable clamps or adhesive tape. to protect the wiring, wrap adhesive tape around it where they lie against metal parts. do not route wires where they will get hot, for example where the heater will blow over them. if the insulation heats up, it may become damaged, resulting in a short-circuit through the vehicle body. make sure that wires will not interfere with mov- ing parts of the vehicle, such as the gearshift, handbrake or seat sliding mechanism. do not shorten any wires. otherwise the protec- tion circuit may fail to work when it should. never feed power to other equipment by cutting the insulation of the power supply wire to tap from the wire. the current capacity of the wire will be exceeded, causing overheating. fuse (30 a) grommet rca input special red battery wire [rd-223] (sold separately). after making all other connections at the amplifier, connect the battery wire terminal of the amplifier to the positive (+) terminal of the battery. ground wire (black) [rd-223] (sold separately). connect to metal body or chassis. amplifier with rca input jacks fuse (30 a) 2 car stereo with rca output jacks external output for details on how to connect to rca input jacks a and b, see the ?onnecting the speakers and input wires?section. if only one input plug is used, do not con- nect anything to rca input jack b. connecting wires with rca pin plugs (sold separately). rca input jack a, b rca output jack speaker output terminal see the ?onnecting the speaker wires?section for speaker connection instructions. blue [rd-223] (sold separately). connect the male terminal of this wire to the blue wire of the car stereo (system remote control). the female terminal can be connected to the auto-antenna relay control terminal. if the car stereo does not have a system remote control terminal, connect the male terminal to the power terminal through the ignition switch. speaker channel speaker type power four-channel sub-woofer nominal input: min. 65 w other than sub-woofer max. input: min. 130 w two-channel sub-woofer nominal input: min. 150 w other than sub-woofer max. input: min. 300 w three-channel sub-woofer nominal input: min. 65 w speaker output a other than sub-woofer max. input: min. 130 w three-channel sub-woofer nominal input: min. 150 w speaker output b other than sub-woofer max. input: min. 300 w fuse (30 a) reverse side connecting wires with rca pin plugs (sold separately).
- GM-X924/x1r/ew 31 gm-x1024,GM-X924 setting the unit gain control adjusting the gain controls a and b will help match the output of the car stereo to the pioneer amplifier. normally, set the switch to the ?ormal?position. if the output is low, even when the vol- ume of the car stereo is turned up, turn these controls clockwise. if there is dis- tortion when the volume of the car stereo is turned up, turn these controls counter-clockwise. if you only use one input plug, set the gain controls for speaker outputs a and b to the same position. set the gain control to ?ormal?when this amplifier is connected to a pioneer car stereo with rca output jacks. if the sound level is too low or distorts, adjust the gain control. adjust the gain control to the ?in?side of ?ormal?when this amplifier is connected to a pioneer car stereo (high voltage output type). cut off frequency control if the lpf/hpf select switch is set to lpf or hpf, you can select a cut off frequency from 50 to 120 hz. power indicator the power indicator lights when the power is switched on. bfc (beat frequency control) switch if you hear a beat while listening to an am broadcast with your car stereo, change the bfc switch using a small screwdriver. lpf (low-pass filter)/hpf (high-pass filter) select switch set the lpf/hpf select switch as follows according to the type of speaker that is connected to the speaker output connector and the car stereo system: lpf/hpf select audio frequency range speaker remarks switch to be output type lpf (left) ?50 to 120 hz sub-woofer connect a sub-woofer. off (center) full range full range hpf (right) 50 to 120 hz full range use if you want to cut the very-low-frequency range because it is not necessary for the speakers you are using. rca input select switch for two-channel input, slide this switch to the left. for four-channel input, slide this switch to the right.
32 gm-x1024,GM-X924 connecting the unit to prevent damage do not ground the speaker wire directly or con- nect a negative (? lead wire for several speakers. this unit is for vehicles with a 12-volt battery and negative grounding. before installing it in a recreational vehicle, truck, or bus, check the bat- tery voltage. if the car stereo is kept on for a long time while the engine is at rest or idling, the battery may go dead. turn the car stereo off when the engine is at rest or idling. if the blue wire of the amplifier is connected to the power terminal through the ignition switch (12 v dc), the amplifier will always be on when the ignition is on?regardless of whether the car stereo is on or off. because of this, the battery could go dead if the engine is at rest or idle. install and route the separately sold battery wire as far away as possible from the speaker wires. install and route the separately sold battery wire and ground wire, speaker wires, and the amplifier as far away as possible from the antenna, antenna cable and tuner. speakers to be connected to the amplifier should conform with the standards listed below. otherwise damage will occur to the speaker. the speaker impedance must be 1 to 8 ohms. (2 to 8 w for stereo, monaural and other bridge connections.) caution disconnect the negative (? terminal of the bat- tery to avoid the risk of short-circuit and damage to the unit. secure the wiring with cable clamps or adhesive tape. to protect the wiring, wrap adhesive tape around it where they lie against metal parts. do not route wires where they will get hot, for example where the heater will blow over them. if the insulation heats up, it may become damaged, resulting in a short-circuit through the vehicle body. make sure that wires will not interfere with mov- ing parts of the vehicle, such as the gearshift, handbrake or seat sliding mechanism. do not shorten any wires. otherwise the protec- tion circuit may fail to work when it should. never feed power to other equipment by cutting the insulation of the power supply wire to tap from the wire. the current capacity of the wire will be exceeded, causing overheating. speaker channel speaker type power four-channel sub-woofer nominal input: min. 65 w other than sub-woofer max. input: min. 130 w two-channel sub-woofer nominal input: min. 150 w other than sub-woofer max. input: min. 300 w three-channel sub-woofer nominal input: min. 65 w speaker output a other than sub-woofer max. input: min. 130 w three-channel sub-woofer nominal input: min. 150 w speaker output b other than sub-woofer max. input: min. 300 w connection diagram grommet rca input special red battery wire [rd-223] (sold separately). after making all other connections at the amplifier, connect the battery wire terminal of the amplifier to the positive (+) terminal of the battery. ground wire (black) [rd-223] (sold separately). connect to metal body or chassis. amplifier with rca input jacks car stereo with rca output jacks rca input jack a, b rca output jack blue [rd-223] (sold separately). connect the male terminal of this wire to the blue wire of the car stereo (system remote control). the female terminal can be connected to the auto-antenna relay control terminal. if the car stereo does not have a system remote control terminal, connect the male ter- minal to the power terminal through the ignition switch. fuse (30 a) fuse (30 a) reverse side connecting wires with rca pin plugs (sold separately). connecting wires with rca pin plugs (sold separately). external output for details on how to connect to rca input jacks a and b, see the ?onnecting the speakers and input wires?section. if only one input plug is used, do not connect anything to rca input jack b. speaker output terminal see the ?onnecting the speakers and input wires section for speaker connec- tion instructions. fuse (30 a) 2
33 gm-x1024,GM-X924 8.2 specifications specifications power source .............................................................................................................. 14.4 v dc (10.8 ?15.1 v allowable) grounding system ............................................................................................................... ............................. negative type current consumption .......................................................................................................... 39 a (at continuous power, 4 w ) average current drawn* ......................................................................................................... ... 11 a (4 w for four channels) 18 a (4 w for two channels) fuse .......................................................................................................................... .................................................. 30 a 2 dimensions .................................................................................................................... .... 255 (w) 61 (h) 310 (d) mm [10 (w) 2-3/8 (h) 12-1/4 (d) in.] weight ........................................................................................................ 4.1 kg (9.0 lbs. ) (leads for wiring not included) maximum power output ........................................................................................................ 13 0 w 4 / 300 w 2 (eiaj) continuous power output .......................................................... 65 w 4 (at 14.4 v, 4 w , 20 ?20,000 hz, 0.04% thd) 150 w 2 (at 14.4 v, 4 w , 20 ?20,000 hz, 0.4% thd) 75 w 4 (at 14.4 v, 2 w , 20 ?20,000 hz, 0.4% thd) load impedance ................................................................................................................ ............ 4 w (1 ?8 w allowable) (bridge connection: 2 ?8 w allowable) frequency response ............................................................................................................ 10 ?50,000 hz (+0 db, ? db) signal-to-noise ratio ......................................................................................................... ............. 105 db (ihf? network) distortion .................................................................................................................... ........................ 0.003% (10 w, 1 khz) separation .................................................................................................................... .................................... 70 db (1 khz) low pass filter ............................................................................................................... ..... cut off frequency: 50 ?120 hz cut off slope: ?2 db/oct high pass filter .............................................................................................................. .... cut off frequency: 50 ?120 hz cut off slope: ?2 db/oct input level / impedance ....................................................................................................... ................... 0.4 ?6.5 v/22 k w note: specifications and the design are subject to possible modification without notice due to improvements. *average current drawn the average current drawn is nearly the maximum current drawn by this unit when an audio signal is input. use this value when working out total current drawn by multiple power amplifiers. - gm-x1024/x1r/uc - GM-X924/x1r/uc, GM-X924/x1r/ew, GM-X924/x1r/es specifications power source .......................................................................................................... 14.4 v dc (10.8 ?15.1 v allowable) grounding system ............................................................................................................... ........................... negative type current consumption ........................................................................................................ 39 a (at continuous power, 4 w ) average current drawn* ........................................................................................................ 1 1 a (4 w for four channels) 18 a (4 w for two channels) fuse .......................................................................................................................... .............................................. 30 a 2 dimensions .................................................................................................................... 255 (w) 61 (h) 310 (d) mm weight .................................................................................................................... 4.1 kg (leads for wiring not included) [10 (w) 2-3/8 (h) 12-1/4 (d) in.] maximum power output .................................................................................................... 130 w 4 / 300 w 2 (eiaj) continuous power output (GM-X924/x1r/ew) .................................. 110 w 4 / 220 w 2 (din45324, +b=14.4 v) continuous power output (GM-X924/x1r/uc, es) ................65 w 4 (at 14.4 v, 4 w , 20 ?20,000 hz, 0.04% thd) 150 w 2 (at 14.4 v, 4 w , 20 ?20,000 hz, 0.4% thd) 75 w 4 (at 14.4 v, 2 w , 20 ?20,000 hz, 0.4% thd) load impedance ................................................................................................................ .......... 4 w (1 ?8 w allowable) (bridge connection: 2 ?8 w allowable) frequency response ........................................................................................................ 10 50,000 hz (+0 db, ? db) signal-to-noise ratio ......................................................................................................... ........... 105 db (iec? network) distortion .................................................................................................................... .................... 0.003% (10 w, 1 khz) separation .................................................................................................................... ................................ 70 db (1 khz) low pass filter ............................................................................................................... . cut off frequency: 50 ?120 hz cut off slope: ?2 db/oct high pass filter .............................................................................................................. .. cut off frequency: 50 ?120 hz cut off slope: ?2 db/oct input level / impedance ....................................................................................................... ................. 0.4 ?6.5 v/22 k w note: specifications and the design are subject to possible modification without notice due to improvements. *average current drawn the average current drawn is nearly the maximum current drawn by this unit when an audio signal is input. use this value when working out total current drawn by multiple power amplifiers.

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