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270249 Service Manual

1. PFMIOX 768232 PFMIOX BE PEMIS 2 Boh 768220 PFM15 2 CROSSOVER BOARD onm CROSSOVER BOARD SPECIFICATION INPUT BLEU SPECIFICATION INPUT t RED PM 229044 120hm Piezoelectric Td 229043 12ohm Piezoelectric WAYS 2 Horn Tweeter WAYS 2 Horn Tweeter XOVER FREQ SKHz LINK XOVER FREQ 4KHz LINK t ms BLACK t 1 BLACK BLACK SLOPE HP 6dB Oct SLOPE HP 6dB Oct m BLACK POWER rms 100W POWER rms 250W PCBs POWER max 200W ERON POWER max 500W erm 8ohm 227064 10 Bohm 227067 15 Bohm LOWH Woofer Speaker Woofer Speaker BLACK PCB4 313083 PFM10 2 Boh 768217 PFM10 2 BE PEMIS 3 4oh 768220 PFM15 3 onm CROSSOVER BOARD i omm CROSSOVER BOARD LOW C2 202 E 2 I 229043 120 Piezoelectric SPECIFICATION INPUT RED BLEU SPECIF ICATION
2. SMS768007 XOVER amp 230W AMPLIFIER BOARD SMS768010 C255 220 R256 R255 82K 1 1 7 756 Veet 2 o2 Sov i eel 2 0 INPUT amp AMPLIFIER BOARD x 72 4 ee i Le sl Lig 5 Y 24 RL2 B E 2 5 E d gt N 0252 4148 R257 1M R266 1M R263 220E R257 10K C25 407 3 NC 27 gt 7 gt 7 7 N BC327 515 5 o2sigies 80 55 5 5 ory 2 SIN 2 asos 14 10 St 8 Jn m 7 n A gt il L 5 ere or gy S 2 5 ves vec 5 6 n 2 8 N SIN 3725 2 2 N avy Are ATK t i ay N N 2 515 m N 5 N 54 2 5 2j g ot M ME 5 2T 5 DT E MSN n A C108 100N BC557 BIN z 4 Ll 15V Dun i cus 22 BC547 id Do mA zi GND eu 330E 8 15KO 215 3 TTE 63 0745 470 08 1N400
3. ek ek ek ek ek ek ek ek ek ek ek ek ek ek ek ek ek ek ek ek ek ek Cables Assemblies Led 5mm 60deg Diffused Green Inputs amp Crossover Board PCB 313042 Hor Female XLR Socket NC3FAH Neutrik Hor Male XLR Socket NC3MAH Neutrik 9 Contacts Vert Male Connector 6 Contacts Vert Male Small Connector Vertical Male Faston 6 3mm Relay 12V 2 Switch 1A 250V TLO74 Quad J Fet Operational Amplifier Led 2 5x5mm Rect Diff Red Grn 15V 1W 5 Zener Diode 1N4148 100mA 75V Signal Diode 4x100K Alog Potentiometer Alps RK1631410 5K 31steps Linear Potentiometer 115K 1 4W 1 Metalized Film Resistor 15KO 1 4W 1 Metalized Film Resistor 10KO 1 4w 1 Metalized Film Resistor 6K81 1 4w 1 Metalized Film Resistor 4K99 1 4w 1 Metalized Film Resistor 100n 2 5 100V MKP Polypropylene Capacitor 15n 2 5 100V MKP Polypropylene Capacitor Jack Sockets Board PCB 313002 6 Contacts Female Cable Jack Stereo Slim Horizontal Socket Power Amplifier Assembly Power Supply Board PCB 317197 2 Contacts Vert Male Connector H 2c P 10 Terminal Block H 3c P 10mm Terminal Block Fuse Clip 10A max EU US 7815 15V 1A Voltage Regulator 7915 15V 1A Voltage Regulator GBUS8D 8A Rectifier Diodes Bridge 30V 1W 5 Zener Diod
4. 5 1 All switches shown in the OFF position All DC voltages measured to ground with a voltmeter 20KOhm V 854 lt Soldering point 4 Supply voltage 4 Logic supply ground ET e Male connector Test point 4 Analog supply ground A gt Female connector lt Flag joined with one or more flags 4 Chassis ground Ru M M F faston connector with the same signal name inscribed Earth ground K R28 4E7 5 ATTENTION Observe precautions when handling electrostatic sensitive devices lepP cs 4788 1 da 27811 MJE 348 Address GENERALMUSIC p A Sales Division 47842 S Giovanni in Marignano RN ITALY Via delle Rose 12 Phone 39 0 541 959511 Fax 39 0 541 957404 GENERALMUSIC on the NET http www generalmusic com 10 COMPONENTS PERFORMANCE TECHNICAL SPECIFICATIONS PFM 10 2 10 woofer POWER HANDLING W continuous EIA RS 426A W peak IMPEDANCE 100 200 5 kHz PFM 12 2 PFM 15 2 15 3 LOUDSPEAKER SPECIFICATIONS Niobium horn tweeter with polycarbonate diaphragm 12 woofer 150 300 8 5 kHz 15 woofer 250 500 4 8 4 kHz 6 midrange 15 woofer 250 500 418 0 8 5 kHz 15 2 12 2MA PFM 8MA 15 woofer 250 500 4 kHz PFM 15S 8 wide range 12 woofer 15 woofer 150 100 350 200 200 700 5 kHz 230 Hz 6 dB oct 6 dB oct 6 dB oct 1216 dB oct 6 dB oc
5. 15V we 15 04 15V 15V 03 C13 15N 2 A 100V Rig 100 PCB 317197 NOTE The power stage is inverting PCB 319064 P1 D2 Di MT 57 IC4 TLO74 PCBH313042 227070 15 WOOFER SPEAKER EARTH EIET 0 0 POWER A ON OFF A 237068 TRANSFORMER 230VAC 350W EU ax 237059 TRANSFORMER 11SVAC 350W US 230Vac 15 50 50Hz oTo 2 115 15 50 50Hz US elc l I n 1 o7 o F lt POWER ON ZY DRW I BATTELLI DWG 550651 Pce 313002 319064 1 317197 313042 GENERALMUSIC S p A ITALY OSK PART 1 1 SCHEMATIC DIAGRAM ALL RIGHTS ARE RESERVED NO COPIES OR REPRODUCE THIS DOCUMENT WITHOUT APP R FALCONI 23 10 00 155A WRITTEN CONSENT BY GENERALMUSIC 130 Spare Part List Code 887069 950860 950199 950978 277357 277343 727613 768232 778154 140226 060281 030171 347401 180693 717079 667708 347204 229044 227064 210217 180662 120482 120414 120411 370534 778150 768217 210215 120857 060294 030160 727610 778149 140193 667715 120541 717067 430072 347396 340270 177325 120664 120662 120661 120455 120346 120111 120102 667708 347204 229043 227064 210273 210217 180662 120483 1204
6. S E 3 E E I fale 100K eye Amos ai X EQUALIZING FILTER Jen acti a 2 a E 2 a R64 47K z 8 5 2 C127 22 Z 4 5 5 m c23 2 Qu 8 026 FEGB THI 100 RnS iok 22 v x z scd x m pI 4 C17 100 ec R40 56K C124 22 1 L3 4 15V m 2 215 Di 11 RI20 10k z 42 Rd oh SIS vi x RISS 27K a N a x s 2 05 418 a Al 2 8 af T sH n ull Ch 100 R19 115K N C151 100 RIZBI0K T Nam U tN4002 R5 8 2 Els Y Ici B a wld z 2 4 m 4 4 MJE350 15v TLO72 RIS 3KS Ri26 2 R127 8K2 8 212167 co i AN as 04 144002 R9 47E i 1 3 MJES40 4 THERMIC m z 5 a7 u 1 2 n M 3 8 2 5401 pa i PROTECTION 5 T 15 8 Dus sh 8 2 alk aa OPTICAL 57 S mus 5 ar 5 ANTI CLIP L 4 LOW PASS FILTER a 8 LIMITER x 18dB oct C15 470 08 1N4002 e e e L by elena ST NTA 8 8 CNSO 6 CN 73715 310W 230Vac POWER AMPLIFIER MODULE EU 757115 310W 15Vac POWER AMPLIFIER MODULE US cnso 26 22 502 3 for PFM15 5A osos Em F2 T6 3A 14002 R501 330E 4 2 3 501 4 4 nsv CD I NES 1 SW Z RED 1 5 acy R504 10K MAIN
7. Horn Tweeter 229043 120hm Piezoelectric WAYS 2 Horn Tweeter WAYS 3 SBS XOVER FREQ SKHz LINK n ara Medos XOVER FREQ 800Hz 5KHz ich BLACK BLACK 228016 6 4ohm SLOPE HP 6dB Oct Law SLOPE HP 12 5dB Oc t 5 Midrange Speaker BLACK POWER rms 100W PCB4 313075 POWER rms 250W MID BLACK POWER max 200W POWER max 500W SLOW BROWN IMPEDANCE dolm 222054 30 Buhm IMPEDANCE mes SUR 227068 15 4ohm nominal w f s nominal Woofer Speaker gener IN BLACK LOW BLACK 313084 2 2 Boh 768218 12 2 BE 5 2 Boh 768222 15 3 om CROSSOVER BOARD orum CROSSOVER BOARD LOW C2 105 RI Ges 7 E m 229043 120 Piezoelectric SPECIFICATION INPUT RED BLEU E SPECIF ICATION PHISH IBEUE Horn Tweeter 229043 1 2ohm Piezoelectric WAYS 2 Horn Tweeter WAYS 3 MID GREEN SF XOVER FREQ SKHz LINK n VE XOVER FREQ 800Hz 5KHz BLACK BLACK 8 228015 Bohm SLOPE HP 6dB Oct _ SLOPE 12 5dB Oc t 9 Midrange Speaker LOW BLACK 9 INPUT POWER rms 150W PCBs 313075 POWER rms 250W miD BLACK POWER max 300W POWER max 500W LOW BROWN IMPEDANCE dohm 222089 J9 hm IMPEDANCE ENK 227069 15 Bohm nominal w f s k nominal Woofer Speaker peser ti N BLACK LOw BLACK PCBH 313082 PEMIS 2 4oh 768219 PFM15 2 4E PEMISS 4oh 768223 155
8. 12 Piezoelectric Horn Tweeter 12 80hm Woofer Speaker Speaker Filler 400gr m 50x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw M5x30tc Black Screw PFM 15 2MA 778150 768219 210215 120857 061265 030095 737113 737114 SMS768009 SMS141000 SMS110000 141102 140217 100084 080743 074570 042715 042672 042625 SMS768006 5 5090003 5 5090002 5 5090001 5 5090000 110316 100061 090920 090917 090916 090201 090200 090194 090183 090153 Speakers Cables Assembly PFM 15 2 4ohm Crossover Board Pcb 313081 Adhesive Rubber Foam 10x1 9mm Specify mt a Vertical Male Faston 6 3mm 15E 20W 596 Wire Resistor 2u2 100V 20 Axial Electrolytic Bipolar Capacitor 250W 230Vac Power Amplifier Module EU 250W 115Vac Power Amplifier Module US Input Board Pcb 074 XLR Female Socket Dual Slider Switch 6 Contacts Vert Male Connector Jack Slim Horizontal S F Socket TL074 Quad J Fet Operational Amplifier Led 3mm Wide Diffused Green 5K 31steps Linear Potentiometer 82K5 1 4W 196 Metalized Film Resistor 89K2 1 4W 196 Metalized Film Resistor 15K0 1 4W 1 Metalized Film Resistor i 250W Amplifier Board Pcb EMB 456 60 28A1303 TO3P Pnp Transistor 2563284 Npn Transistor TIP42C TO220 Pnp Transistor TIP41C TO220
9. AW 4 4 228015 CODE SMS235003 sw 2 z 2 230 43 43 33 33Vac 4 0502 TIP42C 15 502 1 1 CN2 Vect sv 6 Bohm Midrange CODE SMS235007 310W 15 43 43 33 33 4 tN502 2 502 5 5 2 LOW PWR OUT CN502 5 6 CN2 2 45925 5 5768003 aC Ja en rum OUT 230 8OW SUPPLY BOARD 5041 227068 504 24 m 15 4ohm Woofer colour colour 758248 5 5051 MID LOW 505 2 BROWN BROWN ss XOVER BOARD IN IN HIGH BLACK RED st 53 BLEU PCBs EMB 450 HO 1 ANY 202 100V 4E7 SW IN IN HIGH BROWN BLACK BLACK MID LOW BLACK BLACK PCBt 313075 DRW G Boccato DWG 550650 PCBitEMB 456 GO EMB 450 HO EMB 462 HO 313075 GENERALMUSIC S p A ITALY CKD guum DATE 18 10 00 SCHEMATIC DIAGRAM ALL RIGHTS ARE RESERVED NO COPIES OR REPRODUCE THIS DOCUMENT WITHOUT APP R Falconi REV PFM15 3A WRITTEN CONSENT BY GENERALMUSIC 110 12
10. OR REPRODUCE THIS DOCUMENT WITHOUT APP RFALCONI REV PFMBMA PFMI2 2MA WRITTEN CONSENT BY CENERALHUSI 10 s SMS768007 XOVER amp 230W AMPLIFIER BOARD C255 22U R256 580E R255 82K Vect 4785 HAE 4 4 SMS768010 CT c I Veer gt z DP INPUT amp 80W AMPLIFIER BOARD Toa7294 BE n3 20 5 ces N RL2 8 EL 2 N E N 0252 4148 R267 1M R266 1M R263 220E R257 10K C25 407 3 NC ini 027 gt s L 1 L i eva N BC327 81 5
11. t ne a EA u u NEN 1 R25210K 0251 4148 5 ni 8 Sol asos S 14 mure _ srev S MI a jose 7 z gt n T gu x 2 2 418 551 m 218 SR 4176 E 5 ean 229 Y 5 ay R72 47K sl 84 8 8 N 2 4 Ed N sl gt 518 gt ve v f 827 T om 2 m c N DT E E 15v C108 100N BC557 nS z L 1 m j DIST ili Cris 22 id x H CN4 547 m n GND 1 ou Rios 3300 8 amp R107 15KO RNZ15KO a i 22 Ui any aang m 2 1 m E 5v 3 ld N C106 100N C107 100N 45 Ios 2 2 218 LI zm INPUT2 cns 10u Cio1 D _ CIO4100N Cto5 100N rea END E n m Rios 33060 R106 15KO B Cos bu a Tcto1 a d 5 TS os wn 5 rors i x 2 Z o N m 010 a 9 5 5 x 1C101 8 r u A1303 522 HERES X TL074 5 85 TIP42C 2 9 818 eTa a 2 8 2nssso E ala 9 1 144002 RI 47E amp 1 3 4 pi mae z 3 SUBSONIC FILTER 11 2 5 2 S 15 5 DIO 184002 R2 8K2 3 z a 24dB oct Sn x N oct L 4148 2 E 51 pepa pi C 5 gu sU 81 eh 219 h 57 Nas s D aT
12. 030160 737109 737110 SMS768008 SMS141000 SMS110000 140217 100084 080743 074570 042715 042672 042625 SMS768004 5 5090003 5 5090002 5 5090001 5 5090000 110307 100061 090920 090917 090916 090201 090200 090194 090183 090153 080901 080821 080156 080103 060051 030715 SMS768000 110119 080292 080156 060413 030555 667738 SMS235000 SMS235004 110614 110285 110003 110061 080607 020491 717072 430077 347396 340270 177325 120664 120662 120661 120455 120411 120111 120102 667708 659027 229043 227064 210273 210217 180662 120483 120461 120414 120411 120364 120124 Vertical Male Faston 6 3mm 22E 5W 10 Wire Resistor 3u3 100V 20 Axial Electrolytic Bipolar Capacitor 100W 230Vac Power Amplifier Module EU 100W 115Vac Power Amplifier Module US Input Board Pcb 073 XLR Female Socket Dual Slider Switch Jack Slim Horizontal S F Socket TL074 Quad J Fet Operational Amplifier Led 3mm Wide Diffused Green 5K 31steps Linear Potentiometer 82K5 1 4W 1 Metalized Film Resistor 89K2 1 4W 1 Metalized Film Resistor 45K0 1 4W 1 Metalized Film Resistor 100W Amplifier Board Pcb EMB 447 60 25 1303 Pnp Transistor 2SC3284 Npn Transistor 42 TO220 Pnp Transistor TIP41C TO220 Npn Transistor Relay 24V 2 Switch 5A 250Vac TL072 Dual J Fet Operational Amplifier MJE802 TO126 Npn Dar
13. K ls ag INADA BB 47E 2 t7 N AN T mm Ut C t 4 THERMIC 2 5 z oy H BIZ 3 3 8 m 2N5401 pa i PROTECTION de s 5 k Diner all m 5 i 2 ole a ia s jay 5 OPTICAL mus ok x s gt 8 gt T p s s ANTI CLIP m T LOW PASS FILTER LIMITER x 18dB oct 5 C15 470 DB 1 4002 e s lt kav CN50 6 737116 310W 115Vac POWER AMPLIFIER MODULE US CNSUR A 5 2 3 ENZ for 5 esos osos ee 4 2 3 501 4 4 _ gt I 4 ANY ccr 5 RED 5 9 1 5 acy R504 10K MAINS EU A KLIXON 100 C 1 F5 T6 3A gt 230Vac 15 50Hz A C 55 5 2 z z MAINS 1051 MAINS ON OFF YEL BD2 94 3948 15 50 60Hz INLET 25 KBLO2 s s ay mom gt VT CNS03 2 8 878 3 9 8 8 8 8 il gt b 1 1 15 1 4 1 5 BLK 3 gt J 5 4 1 i 4 j 1 4 TL072 TLO72 072 TL072 n 218 8 5812 2 2 z n 4 2 n 0 549 818812 g 215 5 Ra Sa 94 39H98 YEL 5 s 2 2 s NS REY 229043 2 4 5 57 5 5 E 12 0 Horn Tweeter gt 85 esos 5 28 8 8 RED CN503 Y TRANSFORMERS Fl T6 3A R502 330E s 2 CN50 5 5 15V PEMIS 3A c gt
14. enm CROSSOVER BOARD gum CROSSOVER BOARD EE SPECIFICATION INPUT t RED peau SPECIFICATION v 229043 120 Piezoelectric WAYS 2 Horn Tweeter WAYS 1 XOVER FREQ 4KHz Wc XOVER FREQ 230Hz OUT RED BLACK BLACK SATOUT t SLOPE HP 6dB Oct SLOPE HP 12 6dB Oct A ek OUT BLACK POWER rms 250W PCat 313081 POWER rms 350W POWER max 500w POWER max 700W IN RED LOW BROWN 4ohm 227066 15 4ohm asan uqa 4ohm INPUT 227070 e nomina Woofer Speaker nomina F peaker IN BLACK Low BLACK 313064 DRW G BOCCATO DWG 550647 313075 31308 313084 313064 GENERALMUSIC S p A ITALY RMAGALOTT DATE 23 10 2000 SCHEMATIC DIAGRAM ALL RIGHTS ARE RESERVED NO COPES APP RFALCUNI REV A series PASSIVE wren coven Bv 30 PFMISSA 768109 JACK SOCKET BOARD AMPLIFIED SUBWOOFER SPEAKER 5 O 4 758181 INPUTS amp CROSSOVER BOARD SIGN COMP BLOCK DIAGRAM VCCI VCC2 X OVER VOLUME 2 CROSSOVER COMPRESSOR POSITIVE AMPLIFIER SUBSONIC amp EMPHASIS FILTER 5 9 un NEGATIVE AMPLIFIER 768084 AMPLIFIER BOARD MAINS POWER LINE D 5 457 VCC VCCi VCC2 VCC2 LO
15. uz2 1 47 aio z SU sl oT 5 8 aia 248 iw 1 Ks C31 10 1 l 1 SEA 8 1 5 i BE z 5 mas 2 2 7 cs g a a Ai x SHIELD 5 2 m 100 R40 x TBs top zy U 5 5 uter Taboo BIAS ADJUSTMENT amp 8 8 Tot 8 C106 100N C107 100N gt le Hv 2K IBMA 10A 7 c28 iou nsa 4 7 c R38 100K VR 470E cos ooN ue p iama 2m ER E ot AE 7 770 5 222 82 Norte ae ioa Le Ex THERMIC iy m suec x a 851 10 A E 3L PROTECTION 5 a 5 N N i aux Jus hah SUBSONIC FILTER c HI x 24dB oct 2 5 SMS768008 on TOW TIP42C l INPUT BOARD c27 470P 2 3 2K isse m 7 amp os s48 47 c23100P p n 1 5 2 2 1 3 3 as M E340 2N540 1 EM ee 2 R ala so 8 aT zy I i 5 737109 100W 230Vac POWER AMPLIFIER MODULE EU v 757110 100W 115Vac POWER AMPLIFIER MODULE US oO for PFM10O 2A amp 73712 150W 230Vac POWER AMPLIFIER MODULE EU 8D M N M E 737113 150W 115Vac POWER AMPLIFIER MODULE US R30 270 10 for PFMI2 2A amp PFM12 2MA 2 BC547 x 5 5 5 1 0 f c 22 z IG CN4 M Av 55
16. 073 XLR Female Socket Dual Slider Switch Jack Slim Horizontal S F Socket TLO74 Quad J Fet Operational Amplifier Led 3mm Wide Diffused Green 5K 31steps Linear Potentiometer 82K5 1 4W 1 Metalized Film Resistor 39K2 1 4W 1 Metalized Film Resistor 15KO 1 4W 1 Metalized Film Resistor 150W Amplifier Board Pcb EMB 447 60 2SA1303 TO3P Pnp Transistor 25 3284 Npn Transistor TIP42C TO220 Pnp Transistor TIP41C TO220 Npn Transistor Relay 24V 2 Switch 5A 250Vac TLO72 Dual J Fet Operational Amplifier MJE802 TO126 Npn Darl Transistor MJE350 TO126 Pnp Transistor MJES340 TO126 Npn Transistor 2N5401 TO92 Pnp Transistor 2N5550 TO92 Npn Transistor BC560C TO92 LN Pnp Transistor BC557C Equivalent BC550C TO92 LN Npn Transistor BC547C Equivalent BC327 TO92 Pnp Transistor VTL5C4 Analog Optoisolator 90 59 04 222 5 1N4002 1A 100V Rectifier Diode 1N4148 100mA 75V Signal Diode 22 5W 5 Wire Resistor 1000u 6v3 20 Vert Electrolytic Capacitor 150W Supply Board Pcb EMB 449 H0 TIP42C TO220 Pnp Transistor TIP41C TO220 Npn Transistor Fuse Clip 10A max EU US 16V 1W 5 Zener Diode 1N4002 1A 100V Rectifier Diode 220E 5W 10 Resistor 4700u 80v 20 Snap In Electrolytic Capacitor Amplifier Panel Chassis 180W 230Vac Transformer EU 180W 115Vac Transformer US T3 15A Fuse 6 3x32mm US T3 15A Fuse 5x20mm EU Mains Socket 4A 250Vac Bipolar Power Switch KBPC25 25A 200V Rectifier Diod
17. 120461 120414 120411 120364 120124 120059 Vertical Male Faston 6 3mm 15E 20W 5 Wire Resistor 2u2 100V 20 Axial Electrolytic Bipolar Capacitor 250W 230Vac Power Amplifier Module EU 250W 115Vac Power Amplifier Module US Input Board Pcb 074 XLR Female Socket Dual Slider Switch 6 Contacts Vert Male Connector Jack Slim Horizontal S F Socket TLO74 Quad J Fet Operational Amplifier Led 3mm Wide Diffused Green 5K 31steps Linear Potentiometer 82K5 1 4W 1 Metalized Film Resistor 39K2 1 4W 1 Metalized Film Resistor 15KO 1 4W 1 Metalized Film Resistor 250W Amplifier Board Pcb EMB 456 60 2SA1303 Pnp Transistor 25 3284 Npn Transistor TIP42C TO220 Pnp Transistor TIP41C TO220 Npn Transistor Relay 24V 1 Switch no 16A 250V TLO72 Dual J Fet Operational Amplifier MJE802 TO126 Npn Darl Transistor MJE350 TO126 Pnp Transistor MJE340 TO126 Npn Transistor 2N5401 TO92 Pnp Transistor 2N5550 TO92 Npn Transistor BC560C TO92 LN Pnp Transistor BC550C 92 LN Npn Transistor BC327 TO92 Pnp Transistor VTL5C4 Analog Optoisolator Ptc 90 PTH59F04BE222TS 1N4002 1A 100V Rectifier Diode 1N4148 100mA 75V Signal Di
18. 15 2 80hm Crossover Board Pcb 313081 Adhesive Rubber Foam 10x1 9mm Specify mt Vertical Male Faston 6 3mm 39E 20W 5 Wire Resistor 4u7 63V 20 Axial Electrolytic Bipolar Capacitor Input Sockets Panel Input Cables Assembly Jack Mono Socket Input Panel Ld 16x9x1 6 Washer for Jack Speaker Box Assembly PFM 15 2 Covered Wooden Speaker Box Plastic Handle s 25x12mm Rubber Foot Suspension Flange 120664 120662 120463 120411 120346 120111 667710 347204 229043 227067 210274 210217 180662 120483 120461 120414 120411 120364 120124 778151 768221 230593 230540 210215 177220 120857 120581 120003 061207 030248 020982 020981 020700 727609 778148 140193 667714 717070 430075 347395 340270 177325 120664 120662 120463 120411 120346 120111 667711 229043 228016 227068 210274 210217 180662 120483 120482 120461 120414 120411 120364 120124 778151 768222 230551 230543 210215 177220 120857 120581 120003 061231 061221 030171 020982 020979 020695 727610 778149 M6 4 tips Lock Nut z M5 4 tips Lock Nut 4 3x12 5x1 Black Washer WL3 5x20tt Black Screw i WL4x20tc Black Screw M6x25tsp Black Screw Speaker Net Jack Socket Cap 12ohm Piezoelectric Horn Tweeter 15 80hm Woofer Speaker Speaker Filler 400gr m 100x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw W
19. Npn Transistor Relay 24V 1 Switch no 16A 250V TL072 Dual J Fet Operational Amplifier MJE802 TO126 Npn Darl Transistor MJE350 TO126 Pnp Transistor MJE340 TO126 Npn Transistor 2N5401 TO92 Pnp Transistor 2N5550 TO92 Npn Transistor BC560C TO92 LN Pnp Transistor BC557C Equivalent BC550C TO92 LN Npn Transistor BC547C Equivalent BC327 TO92 Pnp Transistor 080901 080821 080156 080103 060051 030715 SMS768002 5 5090001 5 5090000 5 5030000 110119 080606 080292 080156 060413 030560 5 5235002 5 5235006 110614 110291 110029 110018 110037 110036 080608 020491 717080 430085 347396 340270 120662 120661 120341 120102 667710 659027 229043 227066 210274 210217 180662 120483 120461 120414 120411 120364 120124 120059 370534 VTL5C4 Analog Optoisolator 100 PTH9LO4BD222TS2F330 Murata 1N4002 1A 100V Rectifier Diode 1N4148 100mA 75V Signal Diode 0E22 5W 5 Wire Resistor 1000u 6v3 20 Vert Electrolytic Capacitor 250W Supply Board Pcb 450 0 TIP42C TO220 Pnp Transistor TIP41C TO220 Npn Transistor 2200uF 50VL 18x36mm TWSS Rubycon Fuse Clip 10A max EU US GBU8D 8A Rectifier Diodes Bridge 16V 1W 5 Zener Diode 1N4002 1A 100V Rectifier Diode 220E 5W 10 Resistor 4700u 80v 20 Snap In Electrolytic Capacitor 250W 230Vac Transformer EU 250W 115Vac Tran
20. Nut d 4 3x12 5x1 Black Washer WL3 5x20tt Black Screw WLaAx20tc Black Screw M6x25tsp Black Screw Speaker Net White Pot Knob 12 Piezoelectric Horn Tweeter 6 80hm Midrange Speaker 15 4ohm Woofer Speaker Speaker Filler 400gr m 100x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 120482 120461 120453 120414 120411 120364 120346 120124 120059 737090 737091 778134 080716 768181 141187 141186 140929 140908 120857 110305 100084 080734 080293 080103 075820 074570 042730 042625 042605 042585 042565 022024 022014 768109 778111 140217 727562 768100 140917 140081 140069 110119 100060 100049 080606 080342 080293 080156 060403 030884 030555 768094 140929 140927 110316 100904 100061 090917 090916 090201 090200 090194 090183 090153 080901 080245 080171 080156 080103 070105 060591 060051 042695 042687 042605 030715 030247 340783 340154 340079 340078 177619 4mm Black Shakeproof Washer 5 3X10X1 Black Washer 4 2x9x0 8 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw WL4x20tc Black Screw M5x30tc Black Screw M4x25tc Black Screw PFM 15SA 350W 230Vac Power Amplifier Module EU 350W 115Vac Power Amplifier Module US
21. TEST Connect the 40 500W load on the output and repeat the LOW RAIL and HIGH RAIL tests LIMITER CHECK Increase the input signal of 10 dB and verify the output voltage and wave shape remain constant BIAS ADJUSTMENT With resistive load connected wait until the temperature reach 50 c Set the level at zero connect the Multimeter across the resistors R60 then adjust VR1 trimmer to read 6 0 1 BANDWIDTH CHECK Disconnect the load Set the generator at 10dB sweeping the generator frequency from 10Hz to 10kHz the level changes accord ingly Fig 3 Trace 1a OFFSET SENSOR CHECK Set the Variac to zero voltage output disconnect resistive load from the amplifier output connect temporarily by means of a suitable conductor wire CN1 pin 4 15Vdc to R72 side RL1 the protection circuitry Q14 15 16 detect the DC voltage and open the output relay RL1 within 3 seconds approx Remove the connection wait until the relay switch on and after some 70 18 seconds repeat the check with 15Vdc available 1 pin 5 the protection circuitry must open the relay again SIGNAL TO NOISE RATIO CHECK Disconnect the audio generator and short the input pin 1 2 3 of XLR socket shorted the output signal noise must be less than 1mV High Frequency Channel Check gt Verify with the Multimeter the insulation between the heatsink the TDA7294 case Set the audio generator to 5KHz 775MVams OdB sinusoidal signa
22. TO220 Npn Transistor Relay 24V 1 Switch no 16A 250V TL072 Dual J Fet Operational Amplifier MJE802 TO126 Npn Darl Transistor MJE350 TO126 Pnp Transistor MJE340 TO126 Npn Transistor 2N5401 TO92 Pnp Transistor 2N5550 TO92 Npn Transistor BC560C TO92 LN Pnp Transistor BC557C Equivalent BC550C TO92 LN Npn Transistor BC547C Equivalent BC327 TO92 Pnp Transistor VTL5CA Analog Optoisolator Ptc 90 PTH59F04BE222TS 1N4002 1A 100V Rectifier Diode 1N4148 100 75V Signal Diode QE22 5W 5 Wire Resistor 1000u 6v3 20 Vert Electrolytic Capacitor 230 80W Supply Board Pcb 450 0 TIPA2C TO220 Pnp Transistor TIP41C TO220 Npn Transistor 2200uF 50VL 18x36mm TWSS Rubycon Fuse Clip 10A max EU US GBUS8D 8A Rectifier Diodes Bridge 16V 1W 596 Zener Diode 1N4002 1A 100V Rectifier Diode 830E 5W 10 Resistor 4700u 80v 20 Snap In Electrolytic Capacitor Amplifier Panel Chassis 310W 230Vac Transformer EU 310W 115Vac Transformer US Mains Socket 16 250 Bipolar Power Switch T6 3A Fuse 5x20mm EU T6 3A Fuse 6 3x32mm US KBPC3502 35A 200V Rectifier Diode Bridge ki 100nF 10 250Vac Polyester Capacitor Speaker Box Assembly PFM 15 3A Covered Wooden Speaker Box Plastic Handle i 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut M5 4 tips Lock Nut 4 tips Lock
23. detect the DC voltage and open the output relay RL1 within 3 seconds approx Remove the connection wait until the relay switch on and after some seconds repeat the check with 15Vdc available on CN1 pin 5 the protection circuitry must open the relay again gt SIGNAL TO NOISE RATIO CHECK Disconnect the audio generator and short the input pin 1 2 3 of XLR Socket shorted the output signal noise must be less than 1mV PFMI5 3A Amplified Loudspeaker The following adjustment and notes are relative to this model only Remarks gt This is a bi amplified speaker the more powerful amplifier is for the low frequency range woofer the less powerful amplifier is for the high frequency range midrange and tweeter o The power supply of the first amplifier utilizes a dual bipolar DC rail configuration with low and high voltages one positive and one negative low rail 1 and one positive and one negative high rail Vcc2 The second amplifier is supplied by means the onlylow rail 1 Technical Specifications Dimensions WxHxD 482x608x405mm Weight 24 5Kg Power Requirements 230Vac 10 50Hz 310VA 115Vac 10 50 60Hz 310VA Output Power 40 80 230W 80W Max Undistorted Out 40 80 85Vpp 71Vpp Sensitivity 1W 1m 98 SPL continuous 121dBsp peak 127dBsp Frequency Response both amps speakers 45 2 20 2 only amplifiers 3dB 10Hz 60kHz Input Sensitivity OdB 0 775V
24. protection circuitry TR14 15 16 detect the DC voltage and open the output relay RL1 within 3 seconds approx Remove the connection wait until the relay switch on and after some seconds repeat the check with 15Vdc available on CN2 pin 2 the protection circuitry must open the relay again SIGNAL TO NOISE RATIO CHECK Disconnect the audio generator and short the input pin 1 2 3 of XLR Socket shorted the output signal noise must be less than 1mV Advices If you have determinate that the problem is a short on a rail you must check the output transistors to determine which transistor devices are bad Use a soldering iron to lift one leg of each emitter pin and measure the emitter collector resistance on each device Unsolder and lift one leg of each base pin and check the base collector jg 1 resistance of each transistor and replace any that measure as a short If all the transistors are OK unsolder and lift one leg of each diode and check them Check the circuit board for open foil traces Use the Multimeter as Ohm meter to check the resistors particularly the base and emitter resistors of damaged transistor If the input sinewave appears to be distorted during the negative cycle you can assume that the problem is located somewhere in the circuitry of the positive low rail If the positive cycle appears distorted you can assume that the Fig 2 problem is in the circuitry of the negative low rail If the hi
25. response of the PFM15 3A crossover Figure 4 and 5 show the frequency response of the PFM15SA crossover 90 SMS768004 100W AMPLIFIER BOARD 150W AMPLIFIER BOARD E SL 25 S7 8 517 ale euti ong 22 s 3 ub N RI05_330E ala mo teo RNZ1SKO Ew OPTICAL 2nssso 4 m si ANTI CL IP IK 9 n N LN MJE3SO 55 5 APR LIMITER gt ewe coer Y ca oor M E Rat R382K2 C47 220 4 4 Ta pda 5 8 oo 1k a n 21 mo 33064 mos isko z eee E C20 470P zal l hx R e OPENS eN 1 0 A sie ale TLO74 5 5 25 5 5 Ci2 N f 2 By y y J TLO74 5 a 1 a C26 4N7 R5547K m R4712K 46 4 7 1 SI i TAL oy x wlz ala 272 z EI R34 KS 2 2 8 all a EIE 2 8 3 3 R44 470E 1
26. visible distortion and oscilla tion as shown in Fig 1 Trace A Trace B shown the amplifier 2nd stage input R58 side C28 If there is a distortion read the section ADVICES gt HIGH RAIL VOLTAGE AMPLIFICATION TEST When the output signal Positive half wave is less than 29Vp the voltage on D22 cathode must remain constant at 35V when the output signal exceeds 29Vp the voltage must follow the output signal with 6V offset see Fig 2 Trace B to check the negative high rail connect the probe to D26 anode see Fig 2 Trace C gt LOAD CURRENT TEST Connect the 40 500W load on the output and repeat the LOW RAIL and HIGH RAIL tests gt LIMITER CHECK Increase the input signal of 10 dB and verify the output voltage and wave shape remain constant gt BIAS ADJUSTMENT With resistive load connected wait until the temperature reach 50 c Set the level at zero connect the Multimeter across the resistors R60 then adjust VR1 trimmer to read 12 0 1mVdc gt BANDWIDTH CHECK Switch alternatively the generator frequency to 100Hz and 10kHz no level changes must be detectable respect 1kHz Switch the generator frequency to 30Hz and verify the output level decreases about 4 5dB respect to 1 KHz level OFFSET SENSOR CHECK Set the Variac to zero voltage output disconnect resistive load from the amplifier output connect temporarily by means of a suitable conductor wire CN1 pin 4 15Vdc to R72 side RL1 the protection circuitry Q14 15 16
27. 026 08 4148 44 150E DS 4148 LEFT INPUT gt 03 4002 RS 8K2 1 50 54 2 22 R24 10K0 7 ie C7 820P LEFT D4 4002 R9 47E R28 15ko 15 HIGH Tm 829 100E 1 Res 19K0 DUTPUT nee TIP3SC 1 C26 100 R39 68E C27 15N I TRE 100 RS_10KO A MJE15030 C22 100N 2 5 100V R30 100 R26 15 0 R19 33K CI IC3 TLO74 1 TLO74 101 TLO74 R20 4k98 IC4 TLO74 it JAR C15 15N IC 7815 2 AF oov R43 33K 57 IC4 TLO74 gr I 5 R70 10K CNS AF4 05 4002 002 C 150 IC2 7915 R67 330E 4 A C19 22P KBPC25 R37 10 RIGHT R25 15k0 HIGH R36 10k0 OUTPUT 1 RIGHT INPUT C21 15N C25 100 A41 68E C 10U R2 1 53 P z Mh Rit 15 0 R14 33K 027 4002 873 R68 33k L D lt IC3 TLO74 1 C32 10000 I 10 IE A F3 2 RIS 4K99 57 IC4 TLO74 1
28. 15 042672 042625 SMS768007 5 5090003 5 5090002 5 5090001 5 5090000 110316 100061 090920 090917 090916 090201 090200 090194 090183 090153 080901 080821 080156 080103 060051 030715 5 5768003 5 5090001 5 5090000 5 5030000 110119 080606 080292 080156 060432 030560 667739 SMS235003 SMS235007 110614 110291 110018 110037 080608 020491 717075 430080 347395 340270 177325 120664 120662 120661 120463 120411 120346 120111 667711 659027 229043 228015 227068 210274 210217 180662 120483 Speakers Cables Assembly PFM 15 3A Crossover Board Pcb 313075 Adhesive Rubber Foam 10 1 9 Specify mt Vertical Male Faston 6 3mm 4E7 5W 10 Wire Resistor i 2u2 100V 20 Axial Electrolytic Bipolar Capacitor 230 80W 230Vac Power Amplifier Module EU 230 80W 115Vac Power Amplifier Module US Input amp 80W Amplifier Board Pcb 462 0 XLR Female Socket Dual Slider Switch 6 Contacts Vert Male Connector Jack Slim Horizontal S F Socket TDA7294 80W Audio Amplifier with Mute TL074 Quad J Fet Operational Amplifier Led 3mm Wide Diffused Green 5K 31steps Linear Potentiometer 82K5 1 4W 1 Metalized Film Resistor 39 2 1 4W 1 Metalized Film Resistor 15K0 1 4W 1 Metalized Film Resistor 230W Amplifier Board Pcb EMB 456 60 2SA1303 Pnp Transistor 28C3284 Npn Transistor 42 TO220 Pnp Transistor TIP41C
29. 2 54 1 E jd y e t N 8 C106 100N C107 100N Lis N 12 x an Za INPUT2 ce 10u 48 664 HIGH 5 8182 5 CIO4100N CIOS 100N nlx ENDE m I E in xz S TLO74 alee 5 6104 330E RIOS 18KO m cos vu 5 ioia 8 5 5 ala 5 mae 15 PERSA y p Ute me m d Dn A a tov 5 5 1c101 8 ere 8 E EE x TLO74 E ELE 9 A203 v N mm 7 TIP42C 2 o e s 4 Ww m 4 2 ala 2195 gt 235550 D IN4002 RI 47E ra 1 3 5 SUBSONIC FILTER umi Z s pio IN4002 n2 2 5 x4 g 2 24dB oct Sr 2 N 5 kumara oat MIESIO 87 T PL amp 34 219 in ele NS PCE 4 2 vy eT 87 aT oor ET pz2 Fess 5 4 T 4 z 5 Ci IN 9 T 43 y s MJE340 om 2 R34_1K5 co 5 m TIPaic 2 9 3 022 22 5 284 R39 3KS 220 3 aL i 5 su u So 1 8 E E C25 4N7 R55 erus ewe 2 nib gt i SHELVING RSB E lt ors 2 3 u oh E HIGH PASS FILTER Lif 18dB oct lt S a o ro DL VTLSC4 m oct 1 lt b A ba 2 5 n VRI 470E m Sys oon RLI C Ti a ats 2 B n TLo72 1 4 R51_10E 5 sl C25 47P DIN N C150 ENG C126 RISE K M 4 m6 470
30. 2 HO 313075 229043 12ohm Horn Tweeter 228015 6 Midrange 227068 15 4ohm Woofer GENERALMUSIC S p A ITALY G Ricci DATE 18 10 00 R Magalo tti APP R Falconi REV A SCHEMATIC DIAGRAM PFM15 5A ALL RIGHTS ARE RESERVED NO COPIES OR REPRODUCE THIS DOCUMENT WITHOUT WRITTEN CONSENT BY GENERALMUSIC 768094 550W 100N 100V TR2 MJE15031 TRIO 01 4002 47 TIP36C C3 820P TR4 gt C 4002 R2 8K2 1 gt MIES40 T MJE3SO 025 tie TRIB MJE340 TR22 019 775 020 775 RBCS MJL21194 OL1 VTLSC4 Tw iw C26 4N7 ASS 47K R45 10E a TRIS VOLUME I MJEg024 VR2 R32 10 0 SKB BIAS ADJ Lt ia ix 1C3 TLO74 R64 22K VR gt 15 RBS 47 FEGB gt R76 49K IC2 LM393 tq 1 IC2 LM393 5 0E22 R amp 0 0 22 gt 163 10074 R33_10KO C17 10U R40 2 Lt R58 100 ou ase 4x75 190 A Rs 4706 P 15V C6 100N R48 12K R48 4E7 IC TLO72 tH TR23 nes took MJL21193 022 021 029 4002 028 4002 Ret R79 56K L 1 D24 4148 1 018 4002 017 4002 016 4002 015 4002
31. 20414 120124 120059 MJL21194 TO264 Npn Transistor MJL21193 TO264 Pnp Transistor MJE802 TO126 Npn Darl Transistor MJE15031 TO220 Pnp Transistor MJE15030 TO220 Npn Transistor TIP36C TO218 Pnp Transistor TIP35C TO218 Npn Transistor Ptc 100 PTH9LO4BD222TS2F330 Murata Amplifier Chassis with Panel White Pot Knob Orange Pot Knob Led Bush id Transformer 230Vac 350VA Transformer 115Vac 350VA Adhesive Rubber Foam 10x1 9mm Specify mt gt Lateroid Insulator For Screw Block Mains Socket Power Switch T4A Fuse 5x20mm EU TAA Fuse 6 3x32mm US T6 3A Fuse 5x20mm EU T6 3A Fuse 6 3x32mm US 25 25 200V Rectifier Diode Bridge 100nF 1096 250Vac Polyester Capacitor Speaker Box Assembly d 90 I 70mm Black Duct PFM 15SA Covered Wodden Speaker Box Plastic Handle 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut M5 4 tips Lock Nut 4 4 tips Lock Nut 4 2x9x2 Washer WL3 5x20tt Black Screw M6x25tsp Black Screw Speaker Net White Pot Knob Orange Pot Knob 15 6ohm Woofer Speaker Speaker Filler 400gr m 100x50x4cm Black Sealer specify mt Adhesive Rubber Foam 10x1 9mm Specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw M5x30tc Black Screw M4x25tc Black Screw ACTIVE MONITORS Legend US EU Specify United States Version Specify
32. 210217 180662 120482 120414 120411 2N5401 TO92 Pnp Transistor 2N5550 92 Npn Transistor BC560C TO92 LN Pnp Transistor BC557C Equivalent BC550C TO92 LN Npn Transistor BC547C Equivalent BC327 TO92 Pnp Transistor VTL5CA4 Analog Optoisolator Ptc 90 PTH59F04BE222TS 1N4002 1A 100V Rectifier Diode 1N4148 100 75V Signal Diode QE22 5W 5 Wire Resistor 1000u 6v3 20 Vert Electrolytic Capacitor 100W Supply Board Pcb EMB 449 H0 Fuse Clip 10A max EU US 16V 1W 596 Zener Diode 1N4002 1A 100V Rectifier Diode 220E 5W 10 Resistor 4700u 50V 20 Snap In Electrolytic Capacitor Amplifier Panel Chassis 150W 230Vac Transformer EU 150W 115Vac Transformer US Mains Socket 4A 250Vac Bipolar Power Switch T3 15A Fuse 5x20mm EU T3 15A Fuse 6 3x32mm US 25 25 200V Rectifier Diode Bridge 100nF 10 250Vac Polyester Capacitor Speaker Box Assembly PFM 8MA Covered Wodden Speaker Box Belt Handle 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut M4 4 tips Lock Nut 4 2x9x2 Washer WL3 5x20tt Black Screw M6x25tsp Black Screw M4x30tsp Black Screw Speaker Net White Pot Knob 8 8ohm Speaker Speaker Filler 400gr m 30x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 4mm Black Shakeproof Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw PFM 12 2MA 778150
33. 61 120414 120411 120364 120124 778150 768218 210215 120857 060275 030171 0 14 Description Optional Accessories 15mt Jack Jack Signal Cable SC20 Metal Telescopic stand SC30 Alluminium Telescopic stand SC31 Alluminium Telescopic stand PASSIVE LOUDSPEAKERS Accessories Owner s Manual PFM 10X only Owner s Manual PFM 10X 8 Ohm Input Sockets Assembly PFM 10X Crossover Board Pcb 313083 Cables Assembly Jack Horizontal M F Socket 18E 5W 1096 Wire Resistor 4u7 63V 20 Axial Electrolytic Bipolar Capacitor Input Sockets Panel Input Adhesive Plate Speaker Box Speaker Net Jack Socket Cap 12ohm Piezoelectric Tweeter 10 80hm Woofer Speaker Black Sealer specify mt Lem Adhesive Blue Plate 4mm Black Shakeproof Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw Lem Adhesive Logo PFM 10 2 8 Ohm Speakers Cables Assembly PFM 10 2 Crossover Board Pcb 313075 Adhesive Rubber Foam 10x1 9mm Specify mt Vertical Male Faston 6 3mm 22E 5W 10 Wire Resistor 3u3 100V 20 Axial Electrolytic Bipolar Capacitor Input Sockets Panel Input Cables Assembly Jack Mono Socket T Input Panel 16x9x1 6 Washer for Jack Speaker Box Assembly PFM 10 2 Covered Wooden Speaker Box Belt Handle 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut 5 4 tips Lock Nut M4 4 tips Lock Nut 4 2x9x2 Washer WL4x20tc Black Screw M6x25tsp Bla
34. 768218 210215 120857 060275 030171 737111 737112 SMS768008 SMS141000 SMS110000 140217 100084 080743 074570 042715 042672 042625 SMS768005 SMS090003 5 5090002 5 5090001 5 5090000 110307 100061 090920 090917 090916 090201 090200 090194 090183 0 16 Speakers Cables Assembly PFM 12 2 Crossover Board Pcb 313075 Adhesive Rubber Foam 10x1 9mm Specify mt Vertical Male Faston 6 3mm 15E 5W 10 Wire Resistor 4u7 63V 20 Axial Electrolytic Bipolar Capacitor 150W 230Vac Power Amplifier Module EU 150W 115Vac Power Amplifier Module US Input Board Pcb 073 XLR Female Socket Dual Slider Switch Jack Slim Horizontal S F Socket TL074 Quad J Fet Operational Amplifier Led 3mm Wide Diffused Green 5K 31steps Linear Potentiometer 82K5 1 4W 196 Metalized Film Resistor 89K2 1 4W 1 Metalized Film Resistor 15 0 1 4W 1 Metalized Film Resistor 150W Amplifier Board Pcb EMB 447 60 2841303 Pnp Transistor 28C3284 Npn Transistor TIP42C TO220 Pnp Transistor TIP41C TO220 Npn Transistor Relay 24V 2 Switch 5A 250Vac TL072 Dual J Fet Operational Amplifier MJE802 TO126 Npn Darl Transistor MJE350 TO126 Pnp Transistor MJE340 TO126 Npn Transistor 2N5401 TO92 Pnp Transistor 2N5550 92 Npn Transistor BC560C TO92 LN Pnp Transistor BC557C Equivalent BC550C TO92 LN Npn Trans
35. 8 2 Pale 22 MAINS EU A KLIXON 100 C HUM A aso WSVac 15X 50 2 INLET Wy 1 1 gt 5 AE gk A ME BLK 1 z Y 5 gt gt 9 4 F2 T3 15A 4 915b 5 5 ez UMS 5433 ala FEMI GA UEGHA CODEMS238000 5 SESE EI censos sl Jaona 8 1504 230 36 36Vac CNS04 1 4 4 4 4 555 CODE 5 5235004 BOW m 38 36Vac zz IE 5 PEM2 24 12 2MA CODE SM2235001 Jacas Pals 1BOW 230 44 44Vac 5 45 43 MEI 4 CODE SMS235005 ane 115 44 44Vac DIESE sos tk i one 4 ss 4 4 R502 200E 2 7 ES CNSO4 5 SCN4 0502 N Y R ensos zl 5MS768000 4 CNSOS 1 1 CNS T 100W SUPPLY BOARD LR PEMIO 2A PFOMA aes SMS768001 PCBR EMB 447 60 150W SUPPLY BOARD PFMI2 2A PF12 2MA cea Enc ats 0 2 XOVER BOARD 768218 PFMI2 2 BE XOVER BOARD LOW BROWN ss RED s 33 BLEU p 4 I AWW 303 63V 22E SW PFM10 2 4 228043 12 TWEETER u Gv 226 SW DEMO ZA PFMI2 2A PFM2 2MAI 227083 8 BE FULL RANGE N HIGH BLACK 52 54 BLACK Low BLACK 56 227064 10 BE WOOFER pce 313075 227085 WOOFER DRW G BOCCATO 550648 EFB 073 EMB 447 EMB 449 313075 GENERALMUSIC 5 ITALY BATE 2 10 2000 NN ALL RIGHTS ARE RESERVED NO COPES
36. 8T zT m PCB EMB 482 HO Sv 215 21 08 022 5 4 4 4 k 4 5 5 are s MJE340 5 R34 1 5 ar co 5 TIPA C 2 3 022 2 5 C3284 R41 RES 3K3 C47 220 3 3 u 5 1 By Y C26 RSS 47K pes ews 2 4 SHELVING o y RSB IK lt z 2 3 E HIGH PASS FILTER EJ Bee pL n m E 1 1 18dB oct 1 P q l bo i m lt I ab 8 n VRI 470E m Sys son RLI C E E 72 1 851 toE sl C25 47P i C150 15 amp N8 C126 BNB RIS IK D EB 3708 YR s 2 T oys E COME m R58 R38 ey I as Z 4 Zn 3 A1303 41 34 100N R48 12K R49 4 7 3 EQUALIZING FILTER gt 021 2 R R54 47K a q 2 siz w ox TIP42C S ww 5 2 C127 22 ka t i MA 1 1 esso 2 N SES D25 sie ii y E lll oux um 8 LUNES c17 100 ec R40 56K 1 co 4 C124 22 N m m 5 J siLa 812 E RIA 10K a RISS 27K s M di 5 M 4148 x nh Ny ol Ta mir z 10U RIS 15K N 151 10 R12810K N a 5 D N4002 R5 2 zl a3 1c1 B oll 2 5 4 14 co MJE350 15V 5 TLO72 RIS RI26 BK2 RIZ7 8K2
37. Europe Version Accessories 277351 130297 130283 Owner s Manual Mains Cable EU Mains Cable US PFM 8MA 737109 737110 SMS768008 SMS141000 SMS110000 140217 100084 080743 074570 042715 042672 042625 SMS768004 SMS090003 5 5090002 5 5090001 5 5090000 110307 100061 090920 090917 090916 100W 230Vac Power Amplifier Module EU 100W 115Vac Power Amplifier Module US Input Board Pcb EFB 073 H0 XLR Female Socket Dual Slider Switch Jack Slim Horizontal S F Socket TL074 Quad J Fet Operational Amplifier Led 3mm Wide Diffused Green 5K 31steps Linear Potentiometer 82K5 1 4W 1 Metalized Film Resistor 39 2 1 4W 1 Metalized Film Resistor 15K0 1 4W 1 Metalized Film Resistor 100W Amplifier Board Pcb EMB 447 60 2SA1303 Pnp Transistor 28C3284 Npn Transistor TIPA2C TO220 Pnp Transistor TIP41C TO220 Npn Transistor Relay 24V 2 Switch 5A 250Vac TL072 Dual J Fet Operational Amplifier MJE802 TO126 Npn Darl Transistor MJE350 126 Pnp Transistor MJE340 TO126 Npn Transistor 150 090201 090200 090194 090183 090153 080901 080821 080156 080103 060051 030715 SMS768000 110119 080292 080156 060413 030555 667738 SMS235000 SMS235004 110614 110285 110003 110061 080607 020491 717077 430082 347396 340270 177325 120664 120661 120455 120411 120111 120102 667713 659027 227063 210272
38. Frequency Response filter ampl speaker 50Hz 320Hz only amplifier 3dB 10 2 6 2 Input Sensitivity OdB 0 775Vnus Input Impedance balanced 30KQ unbalanced 15KQ Voltage Gain 150Hz 33 41dB IMD SMPTE 60Hz 7KHz 4 1 lt 0 1 THD THD N lt 0 1 S N Ratio unweighted gt 100dB Setup gt Connect the Variac between the mains and the amplifier and set it at zero voltage gt Turn full clockwise the LEVEL and X OVER potentiometers gt Connect the audio generator to the channel R input and set it to 150Hz 775 088 sinusoidal signal gt Place the temperature sensor between heatsink and the R59 gt Connect the CH1 scope GND clip to CN2 pin 6 SGND terminal the probe tip to R72 side RL1 PWR out set its sensitivity at 20V div 10mS div o Connect the CH2 probe tip 025 cathode and set its sensitivity at 20V div gt The load resistor is disconnected gt The procedures that follow must be executed subsequently in the order specified Supply Check o Remove the transformer secondary fuses located on SUPPLY board set the Variac to the nominal mains voltage check with the Multim eter the AC supply voltages F1 F2 102 2Vac F3 F4 60 1 5Vac Re set the at zero voltage turn off the amplifier and put the fuses back on its holders gt Set up the slowly monitoring the Outputs with the oscilloscope CH1 connected it should display the sinusoidal input signal
39. ISE RATIO CHECK Disconnect the audio generator and short the input pin 1 2 3 of XLR Socket shorted the output signal noise must be less than 1mV PFMI2 2A PFMI2 2MA Amplified Loudspeaker The following adjustment and notes are relative to these models only Technical Specifications Dimensions PFM12 2A WxHxD 390x508x325mm Dimensions PFM12 2MA WxHxD 390x508x325mm Weight PFM12 2A 15 5Kg Weight PFM12 2MA 15Kg Power Requirements 230Vac 10 50Hz 180VA 115Vact10 50 60Hz 180VA 8Q 136W 8Q 93Vpp Output Power Max Undistorted Out 50 06 Sensitivity 1W 1m 97 SPL continuous 116dBsp peak 119dBsp Frequency Response amplifier speaker 55Hz 20kHz only amplifier 3dB 10Hz 60kHz Input Sensitivity OdB 0 775Vnus Input Impedance balanced 30KQ unbalanced 15KQ Voltage Gain 33 41dB IMD SMPTE 60Hz 7KHz 4 1 lt 0 1 THD THD N lt 0 1 S N Ratio unweighted gt 100dB Note measured with the limiter enabled Setup gt 9 Connect the Variac between the mains and the amplifier and set it at zero voltage Connect the audio generator to the channel input and set it to 1kHz 775mVnws OdB sinusoidal signal Place the temperature sensor between heatsink and the 1 Connect the CH1 scope GND clip to CN4 pin 1 SGND terminal and the probe tip to R50 side RL1 PWR out set it to 20V div 1mS div Connect the CH2 probe tip to R58 side C28 and s
40. L3 5x20tt Black Screw WL3 5x12tt Black Screw 5 30 Black Screw PFM 15 3 4 Ohm Speakers Cables Assembly PFM 15 3 4ohm Crossover Board Pcb 313084 1 2mH 1mm Crossover Core Coil 0 32mH 1mm Crossover Coil Adhesive Rubber Foam 10x1 9mm Specify mt Core Coil Support Vertical Male Faston 6 3mm MS Black Self Locking Nut M3x8tc Black Screw i 4E7 20W 5 Wire Resistor 10u 100V 20 Axial Electrolytic Bipolar Capacitor 15u 100V 10 MKT Polyester Capacitor 22u 100V 1096 MKT Polyester Capacitor 2 2 100V 10 MKT Polyester Capacitor Input Sockets Panel Input Cables Assembly Jack Mono Socket Input Panel Speakers Box Assembly PFM 15 3 Covered Wooden Speaker Box Plastic Handle ui 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut M5 4 tips Lock Nut 4 3x12 5x1 Black Washer WL3 5x20tt Black Screw WL4x20tc Black Screw M6x25tsp Black Screw Speaker Net 12 Piezoelectric Horn Tweeter 6 4ohm Midrange Speaker 15 4ohm Woofer Speaker Speaker Filler 400gr m 100x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 4mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw M5x30tc Black Screw PFM 15 3 8 Ohm Speakers Cables Assembly PFM 15 3 80hm Crossover Board Pcb 313082 2 5mH 1mm Crossover Core Coil i 0 65mH 1mm Crossover Coil Adh
41. S EU A KLIXON 100 C F5 T6 3A at 230Vac 15 50Hz A E mH CO 8 88 8 2 z MAINS IUS MAINS YEL BD2 949 A ON OFF RHPR 9 948 8 15 15 50 60Hz INLET KBPC25 KBLO2 m SPY mom RII gt aT oe ToT oT 8 8 8 8 u 5 z 5 01 3 9 id F u Ic4 C A 5 af 4 4 44 ea TON 1 1 TLo72 TLO72 TLO72 TL072 i z 8 2 lz z 4 a 4 u 5 509 5 v 4 984 948 8 A 2 TEES EN wee s in 5 5 515 9 z C asosi 8 88 8 5 RED CN503 1 TRANSFORMERS E T63A R502 330 75 PFMIS 3A 4 WV 4 4 4 4 4 4 CODE SMS235003 sw 2 3 310 230 43 43 33 33Vac 4 0502 42 15 02 1 1 Vcci ui dd CODE SMS235007 310W 15 43 43 33 33 4 sz x CRZ Vesz CN502 5 5 CN2 LOW PWR OUT CN502 6 CN2 50 5 amp _ SMS768003 cnsoz aC Ja HIGH PWR OUT PCBs 45 230 80W SUPPLY BOARD CN504 1 colour colour 768248 5 ENSE MID LOW CNS0S 2 BROWN BROWN ss XOVER BOARD IN IN HIGH BLACK RED st co 83 BLEU PCB EMB 450 HO AH ANN 2U2 100V 4E7 SW IN IN HIGH BROWN BLACK BLACK MID LOW BLACK BLACK PCB 313075 DRW G Beccato DwG 550650 456 60 450 0 EMB 46
42. S768003 SUPPLY BOARD 15 POWER ON O INPUT XLR POSITIVE AMPLIFIER COMPRESSOR SUBSONIC FILTER SMS768208 INPUTS BOARD SMS768004 2 amp PFMBMA AMPLIFIED LOUDSPEAKER MUTING p NEGATIVE AMPLIFIER AMPLIFIER BOARD 1 MAINS LINE SWITCH RECTIFIER CAPACITORS O TRANSFORMER COMPRESSOR SUBSONIC FILTER SMS768208 INPUTS BOARD 2 2 amp PFM12 2MA Do OE SMS768005 AMPLIFIER BOARD 1 AMPLIFIED LOUDSPEAKER MAINS POWER POSITIVE AMPLIFIER mE E 758217 CROSSOVER BOARD ONLY PFM10 2A 5 5768000 SUPPLY BOARD p NEGATIVE AMPLIFIER 788218 CROSSOVER LINE SWITCH TRANSFORMER SMS768001 SUPPLY BOARD DRW G BOCCATO DWG 550652 PCBs ONLY PFMIO 2A1 GENERALMUSIC 5 ITALY CKD GRICCI DSKt 5 PART 1 1 APP R FALCONI REV 09 10 00 SCHEMATIC DIAGRAM PFM SERIES ACTIVE BLOCK DIAGRAMS ALL RIGHTS ARE RESERVED NO COPIES OR REPRODUCE THIS DOCUMENT WITHOUT WRITTEN CONSENT BY GENERALMUSIC TEST PROCEDURES amp ADJUSTMENTS These procedures are relative to the ACTIVE versions amp
43. W RAILS RECTIFIER amp HIGH RAILS RECTIFIER amp CAPACITORS CAPACITORS SWITCH TRANSFORMER 768100 SUPPLY BOARD COMPRESSOR P SUBSONIC FILTER FOT n SMS768209 INPUTS BOARD 5 2 amp 15 2 AMPLIFIED LOUDSPEAKER SMS768006 AMPLIFIER BOARD 15V MAINS POWER LINE SWITCH VEC VCC2 POSITIVE AMPLIFIER NEGATIVE AMPLIFIER VECI VCC2 m VCCI VEC VCC2 VCC2 LOW RAILS RECTIFIER HIGH RAILS RECTIFIER 758218 CROSSOVER BOARD amp amp CAPACITORS CAPACITORS I TRANSFORMER SMS768002 SUPPLY BOARD Bow 15V POWER AMPLIFIER POWER ON t VOLUME COMPRESSOR SUBSONIC FILTER INPUT j 4 4 CROSSOVER FILTER LINK SMS768210 INPUT amp 80W AMPLIFIER BOARD PFM15 3A 04 SMS768007 XOVER amp 230W AMPLIFIER BOARD AMPLIFIED LOUDSPEAKER MAINS POWER LINE SWITCH px TRANSFORMER POSITIVE AMPLIFIER MUTING NEGATIVE AMPLIFIER VECI VCC2 15V VCCI VEC VCC2 VCC2 LOW RAILS RECTIFIER HIGH RAILS RECTIFIER amp amp CAPACITORS CAPACITORS 758248 CROSSOVER BOARD SM
44. amplified with no distortions if a distortion occur check the AMPLIFIER board as suggested in the ADVICES section gt If the protection trips turn off the amplifier wait some minutes disconnect the supplies from the amplifier module CN2 CN3 on AMPLIFIER board continue to check the supplies o Finally verify the DC supplies on SUPPLY board CN2 5 Vcc2 9 71 2Vdc CN3 pin 1 Vcc1 42 1 5Vdc CN3 5 6 42 1 5Vdc CN3 pin 4 Vcc2 71 2Vdc CN2 pin 3 15 41Vdc CN2 pin 2 15 1Vdc o If one or more voltages don t correspond check the rectifiers capacitors and transformers disconnecting them from circuitry refer to schematics Channels Check gt gt Verify with the Multimeter the insulation between the heatsink and the transistors collectors Verify with the Multimeter the PTC resistor value R59 it must be between 50Q and 200Q INITIAL TEST Increase slowly the Variac The channel output signals must be symmetrical respect the GND without visible distortion and oscilla tion as shown in Fig 1 Trace A Trace B shown the amplifier 2nd stage input R58 side C28 If there is a distortion read the section ADVICES HIGH RAIL CHECK When the output signal Positive half wave is less than 34Vp the voltage on D25 cathode must remain constant at 40V when the output signal exceeds 40Vp the voltage must follow the output signal with 6V offset see Fig 2 Trace B to check the negati
45. ck Screw M4x30tsp Black Screw Speaker Net Jack Socket Cap 12 Piezoelectric Horn Tweeter 10 80hm Woofer Speaker Speaker Filler 400gr m 50x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw M5x30tc Black Screw PFM 12 2 8 Ohm Speakers Cables Assembly PFM 12 2 Crossover Board Pcb 313075 Adhesive Rubber Foam 10x1 9mm Specify mt Vertical Male Faston 6 3mm 1 5W 10 Wire Resistor 4u7 63V 20 Axial Electrolytic Bipolar Capacitor 727610 778149 140193 667715 120541 717068 430073 347396 340270 177325 120664 120662 120661 120455 120346 120111 120102 667709 347204 229043 227065 210273 210217 180662 120483 120461 120414 120411 120364 120124 778150 768219 210215 120857 061265 030095 727609 778148 140193 667714 717069 430074 347395 340270 177325 120664 120662 120463 120411 120346 120111 667710 229043 227066 210274 210217 180662 120483 120461 120414 120411 120364 120124 778150 768220 210215 120857 061311 030171 727610 778149 140193 667715 120541 717069 430074 347395 340270 177325 Input Sockets Panel Input Cables Assembly Jack Mono Socket Input Panel 16x9x1 6 Washer for Jack Speaker Box Assembly PFM 12 2 Covered Wooden Speaker Box Belt Handle d 25x12mm Rubber Foot Suspension F
46. d in the ADVICES section Finally verify the DC supplies on SUPPLY board 1 2 Vcc2 60 2 CN2 pin 3 Vcc1 43 1 5Vdc CN2 1 1 43 1 5 CN2 2 Vcc2 60 2Vdc CN1 pin 4 15 1Vdc CN1 pin 5 15 1Vdc If one or more voltages don t correspond check the rectifiers capacitors and transformers disconnecting them from circuitry refer to schematics Low Frequency Channel Check gt Verify with the Multimeter the insulation between the heatsink the transistors collectors Verify with the Multimeter the PTC resistor value TH1 it must be between 50Q and 200Q Set the audio generator to 500Hz 775 OdB sinusoidal signal Connect the CH2 probe tip to D22 cathode and set its sensitivity at 20V div LOW RAIL VOLTAGE AMPLIFICATION TEST Increase slowly the Variac The channel output signals must be symmetrical respect the GND without visible distortion and oscilla tion as shown in 0 1 Trace A Trace B shown the amplifier 2nd stage input R58 side C28 If there is a distortion read the section ADVICES HIGH RAIL VOLTAGE AMPLIFICATION TEST When the output signal Positive half wave is less than 34Vp the voltage on D22 cathode must remain constant at 40V when the output signal exceeds 34Vp the voltage must follow the output signal with 6V offset see Fig 2 Trace B to check the negative high rail connect the probe to D26 anode see Fig 2 Trace C LOAD CURRENT
47. dspeaker The following adjustment and notes are relative to this model only Remarks gt power supply utilizes dual bipolar DC configuration with low and high voltages one positive and one negative low rail 1 and one positive and one negative high rail Vcc2 Technical Specifications Dimensions WxHxD 458x578x405mm Weight 21 5Kg Power Requirements 230Vac 10 50Hz 250VA 115Vac 10 50 60Hz 250VA Output Power 4Q 250W Max Undistorted Out 40 89Vpp Sensitivity 1W 1m 98dBspL Max SPL continuous 119dBsp peak 122dBsp Frequency Response amplifier speaker 48Hz 20kHz only amplifier 3dB 10Hz 60kHz Input Sensitivity OdB 0 775Vems Input Impedance balanced 30KQ unbalanced 15KQ Voltage Gain 32 1dB IMD SMPTE 60Hz 7KHz 4 1 lt 0 1 THD THD N lt 0 1 S N Ratio unweighted gt 100dB Note measured with the limiter enabled Setup gt Connect the Variac between the mains and the amplifier and set it at zero voltage c Connect the audio generator to the channel input and set it to 1 2 775mVnws OdB sinusoidal signal gt Place the temperature sensor between heatsink and the PTC TH1 gt Connect the CH1 scope GND clip to CN1 pin 1 SGND terminal and the probe tip to R60 side RL1 PWR out set it to 20V div 1mS div c Connect the CH2 probe tip to D22 cathode and set its sensitivity at 20V div gt Set the LEVEL potentiometer full clockw
48. e 15V 1W 5 Zener Diode 1N4002 1A 100V Rectifier Diode 180E 3W 10 Resistor 10000U 80V 20 Snap In Electrolytic Capacitor 4700u 50V 20 Snap In Electrolytic Capacitor Power Amplifier Board PCB 319064 9 Contacts Vert Male Connector 24 Contacts Vert Male Strip Relay 24V 1 Switch 16A 250V LM393 Dual Comparator TLO72 Dual J Fet Operational Amplifier MJE350 TO126 Pnp Transistor MJE340 TO126 Npn Transistor 2N5401 TO92 Pnp Transistor 2N5550 TO92 Npn Transistor BC560 TO92 LN Pnp Transistor BC550 TO92 LN Npn Transistor BC327 TO92 Pnp Transistor VTL5C4 Analog Optoisolator 7V5 1W 5 Zener Diode FE6B 6A 100V Fast Recovery Diode 1N4002 1A 100V Rectifier Diode 1N4148 100mA 75V Signal Diode 470E 20 Vertical Linear Trimmer 8K2 2W 10 Resistor 0E22 5W 5 Wire Resistor 56K2 1 4w 1 Metalized Film Resistor 49K9 1 4w 1 Metalized Film Resistor 10KO 1 4w 1 Metalized Film Resistor 1000u 6v3 20 Vert Electrolytic Capacitor 10u 25V 20 Vert Electrolytic Bipolar Capacitor TO264 Mica Washer 0218 Mica Washer TO220 Mica Washer TO220 Insulated Bush Heatsink 090924 090923 090920 090919 090918 090863 090862 080821 667673 659027 659026 330130 237068 237069 210215 190133 110614 110291 110029 110036 110018 110037 080607 020491 717076 657265 430081 347395 340270 177325 120664 120662 120661 120455 120411 120111 667712 659027 659026 227070 210274 210217 210215 180662 120483 120461 1
49. e Bridge 100nF 10 250Vac Polyester Capacitor Speaker Box Assembly PFM 12 2A Covered Wooden Speaker Box Belt Handle 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut M5 4 tips Lock Nut M4 4 tips Lock Nut 4 2x9x2 Washer WL3 5x20tt Black Screw M6x25tsp Black Screw M4x30tsp Black Screw Speaker Net White Pot Knob 12ohm Piezoelectric Horn Tweeter 12 80hm Woofer Speaker Speaker Filler 400gr m 50x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw M5x30tc Black Screw PFM 15 2A Speakers Cables Assembly 15 2 4ohm Crossover Board Pcb 313081 778150 768219 210215 Adhesive Rubber Foam 10x1 9mm Specify mt 120857 061265 030095 737113 737114 SMS768009 SMS141000 SMS110000 141102 140217 100084 080743 074570 042715 042672 042625 SMS768006 5 5090003 5 5090002 5 5090001 5 5090000 110316 100061 090920 090917 090916 090201 090200 090194 090183 090153 080901 080821 080156 080103 060051 030715 5 5768002 5 5090001 5 5090000 5 5030000 110119 080606 080292 080156 060413 030560 667739 5 5235002 5 5235006 110614 110291 110020 110021 080608 020491 717074 430079 347395 340270 177325 120664 120662 120661 120463 120411 120346 120111 667710 659027 229043 227066 210274 210217 180662 120483
50. esive Rubber Foam 10x1 9mm Specify mt Core Coil Support Vertical Male Faston 6 3mm M3 Black Self Locking Nut i M3x8tc Black Screw 8bE2 20W 5 Wire Resistor 6E8 20W 5 Wire Resistor id 4u7 63V 20 Axial Electrolytic Bipolar Capacitor 15u 100V 10 MKT Polyester Capacitor 10u 100V 10 MKT Polyester Capacitor 1u5 100V 10 MKT Polyester Capacitor Input Sockets Panel Input Cables Assembly 140193 667715 120541 717070 430075 347395 340270 177325 120664 120662 120463 120411 120346 120111 667711 347204 229043 228015 227069 210274 210217 180662 120483 120482 120461 120414 120411 120364 120124 841208 768223 727611 778149 140193 778148 140193 667716 120541 717071 657265 430076 347395 340270 177325 120664 120662 120455 120411 120346 120111 667712 347204 227070 210274 210217 210215 180662 120483 120461 120414 120411 120364 120124 Legend US EU 277351 130297 130283 778150 768217 210215 Jack Mono Socket Input Panel 16x9x1 6 Washer for Jack Speakers Box Assembly i PFM 15 3 Covered Wooden Speaker Box Plastic Handle 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut M5 4 tips Lock Nut 4 3x12 5x1 Black Washer WL3 5x20tt Black Screw WL4x20tc Black Screw M6x25tsp Black Screw Speaker Net Jack Socket Cap 12ohm Piezoelectric Horn Tweeter 6 80hm Midrange Speaker 15 80hm Woofer Speaker Speaker Filler 400g
51. et its sensitivity at 0 2V div Set the LEVEL potentiometer full clockwise The load resistor is disconnected The procedures that follow must be executed subsequently in the order specified Supply Check gt Remove the transformer secondary fuses located on SUPPLY board set the Variac to the nominal mains voltage check with the Multim eter the AC supply voltages F1 F2 90 2Vac Re set the Variac at zero voltage turn off the amplifier and put the fuses back on its holders Set up the Variac slowly monitoring the Outputs with the oscilloscope CH1 connected it should display the sinusoidal input signal amplified with no distortions if a distortion occur or the protection trips turn off the amplifier and check the AMPLIFIER board as suggested in the ADVICES section Finally verify the DC supplies on SUPPLY board CN4 2 63 2 CN5 1 2 63 42Vdc CN4 pin 4 15 1Vdc CN4 pin 5 15 1Vdc If one or more voltages don t correspond check the rectifiers capacitors and transformers disconnecting them from circuitry refer to schematics Channel Check gt gt Verify with the Multimeter the insulation between the heatsink the transistors collectors Verify with the Multimeter the PTC resistor value TH1 it must be between 50Q and 200Q VOLTAGE AMPLIFIER TEST Increase slowly the Variac The channel output signals must be symmetrical respect the GND without vi
52. gh rails appear distorted or are not modulating as shown in figure then the problem probably exists somewhere in the circuitry of the respective or defective high rail Refer to the schematics Trace Trace LL Trace B AL LAC hal Trace RU u wasi Before reassembling the amplifier and before deliver it to the user it is a goal verify its reliability with the following checks NA Reliability Check Switch off the amplifier or leaving it switched but operating with greatest caution carefully shake the boards and connections inside it using an insulated tool for example the handle of a screwdriver to find wrong contacts and so on o Turn on the amplifier and verify that it operates correctly Burn in Check c Connect the appropriate load resistor to the output and a noise signal generator to the input set it to pink noise with a 3 1 of crest factor and OdB max level is preferrable otherwise use a standard pink noise generator Leave the amplifier switched on for some hour and finally check its correct functionality after the test Figures Figure 1 and 2 show the right shape of the traces but not their real levels refer to the levels mentioned in the chapter of appropriate amplified loudspeaker Figure 3 shows the frequency
53. index p M AN Technical Specifications Transistors Packages Passive Version Schematics LE n3 gt Active Version Block Diagrams passive active Test Procedures and Adjustments PFM10 2A PFM8MA PFM12 2A PFM12 2MA Test Procedures and Adjustments PFM15 2A 10N PFN 10 24 s 10 2 Pit 12 28 rior eR DEM 1 2 2 DEM 1 g 21 schematic PEM 15 2 PEN 15 3A PEN 15 3 PENI 189A PEN 158 PEM SMA 12 2MA Pll 19 2 Warnings al 5 N Notice 18 Service must be carried out by qualified personnel only Any tampering carried out by unqualified personnel during the guarantee period t5 470P e will forfeit the right to guarantee EE For a correct operation of the instrument after having switched off be careful to wait at least 3 seconds before switching on again ALS To improve the device s specifications the schematic diagrams may be subject to change without prior notice N All components marked by this symbol have special safety characteristics when replacing any of these components use only manufacturer s specified parts The u micro symbol of capacitance value is substituted by U The Q omega symbol of resistance value is substituted by E The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified All resistors are 1 8W unless otherwise specified
54. ise The load resistor is disconnected The procedures that follow must be executed subsequently in the order specified Supply Check c Remove the transformer secondary fuses located on SUPPLY board set the Variac to the nominal mains voltage check with the Multim eter the AC supply voltages F1 F2 90 2Vac F4 F5 52 1 5Vac gt Re set the Variac at zero voltage turn off the amplifier and put the fuses back on its holders gt Set up the Variac slowly monitoring the Outputs with the oscilloscope CH1 and CH2 connected it should display the sinusoidal input signal amplified with no distortions if a distortion occur or the protection trips check the AMPLIFIER board as suggested in the ADVICES section gt Finally verify the DC supplies on SUPPLY board CN1 pin 2 Vcc2 63 2Vdc CN2 pin 3 36 1 5Vdc CN2 pin 1 Vcc1 36 1 5Vdc CN2 pin 2 Vcc2 63 42Vdc CN1 pin 4 15 1Vdc CN1 5 15 1Vdc gt If one or more voltages don t correspond check the rectifiers capacitors and transformers disconnecting them from circuitry refer to schematics Channel Check Verify with the Multimeter the insulation between the heatsink and the transistors collectors c Verify with the Multimeter the PTC resistor value TH1 it must be between 50Q and 200Q gt LOW RAIL VOLTAGE AMPLIFICATION TEST Increase slowly the Variac The channel output signals must be symmetrical respect the GND without
55. istor BC547C Equivalent 090153 080901 080821 080156 080103 060051 030715 SMS768001 5 5090001 5 5090000 110119 080292 080156 060413 030560 667738 5 5235001 5 5235005 110061 110003 110614 110285 080607 020491 717078 430083 347396 340270 120662 120661 120455 120411 120102 667709 659027 229043 227065 210273 210217 180662 120483 120461 120414 120411 120364 120124 BC327 TO92 Pnp Transistor VTL5C4 Analog Optoisolator 90 59 04 222 5 1N4002 1 100V Rectifier Diode 1N4148 100mA 75V Signal Diode QE22 5W 5 Wire Resistor 1000u 6v3 20 Vert Electrolytic Capacitor 150W Supply Board Pcb EMB 449 H0 TIP42C TO220 Pnp Transistor TIP41C TO220 Npn Transistor Fuse Clip 10A max EU US 16V 1W 5 Zener Diode 1N4002 1A 100V Rectifier Diode 220E 5W 10 Resistor 4700u 80v 20 Snap In Electrolytic Capacitor Amplifier Panel Chassis m 180W 230Vac Transformer EU 180W 115Vac Transformer US T3 15A Fuse 6 3x32mm US T3 15A Fuse 5x20mm EU Mains Socket 4A 250Vac Bipolar Power Switch 25 25 200V Rectifier Diode Bridge ki 100nF 10 250Vac Polyester Capacitor Speaker Box Assembly PFM 12 2MA Covered Wodden Speaker Box Belt Handle 25x12mm Rubber Foot M5 4 tips Lock Nut M4 4 tips Lock Nut 4 2 9 2 Washer WL3 5x20tt Black Screw M4x30tsp Black Screw Speaker Net White Pot Knob
56. l Connect the CH2 probe tip to R260 side IC202 HF PWR out and set its sensitivity at 20V div 200 5 VOLTAGE AMPLIFICATION TEST Increase slowly the Variac The channel output signals must be symmetrical respect the GND without visible distortion and oscilla tion If there is a distortion replace the TDA7294 LOAD CURRENT TEST Connect the 80 500W load on the output and repeat the test LIMITER CHECK Increase the input signal of 10 dB and verify the output voltage and wave shape remain constant BANDWIDTH CHECK Disconnect the load Set the generator at 10dB sweeping the generator frequency from 10Hz to 10kHz the level changes accord ingly Fig 3 Trace 1b SIGNAL TO NOISE RATIO CHECK Disconnect the audio generator and short the input pin 1 2 3 of XLR Socket shorted the output signal noise must be less than 1mV PFMI5SA Amplified Subwoofer The following adjustment and notes are relative to this model only Remarks gt The power supply utilizes a dual bipolar DC rail configuration with low and high voltages one positive and one negative low rail 1 and one positive and one negative high rail Vcc2 Technical Specifications Dimensions WxHxD 478x508x478mm Weight 24 5Kg Power Requirements 230Vac 10 50Hz 350VA 115Vac 10 50 60Hz 350VA Output Power 40 350W Max Undistorted Out 4Q 105Vpp Sensitivity 1W 1m 94dBspi Max SPL continuous 118dBsp peak 121dBsp
57. l Transistor MJE350 TO126 Pnp Transistor MJE340 TO126 Npn Transistor 2N5401 TO92 Pnp Transistor 2N5550 TO92 Npn Transistor BC560C TO92 LN Pnp Transistor BC557C Equivalent BC550C TO92 LN Npn Transistor BC547C Equivalent BC327 TO92 Pnp Transistor VTL5CA Analog Optoisolator Ptc 90 PTH59F04BE222TS 1N4002 1A 100V Rectifier Diode 1N4148 100 75V Signal Diode 0 22 5W 5 Wire Resistor 1000u 6v3 20 Vert Electrolytic Capacitor 100W Supply Board Pcb EMB 449 H0 Fuse Clip 10A max EU US 16V 1W 596 Zener Diode 1N4002 1 100V Rectifier Diode 220E 5W 10 Resistor 4700u 50V 20 Snap In Electrolytic Capacitor Amplifier Panel Chassis 150W 230Vac Transformer EU 150W 115Vac Transformer US Mains Socket 4A 250Vac Bipolar Power Switch T3 15A Fuse 5x20mm EU T3 15A Fuse 6 3x32mm US 25 25 200V Rectifier Diode Bridge 100nF 10 250Vac Polyester Capacitor Speaker Box Assembly PFM 10 2A Covered Wooden Speaker Box ig Belt Handle 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut 5 4 tips Lock Nut M4 4 tips Lock Nut 4 2x9x2 Washer WL3 5x20tt Black Screw M6x25tsp Black Screw M4x30tsp Black Screw Speaker Net White Pot Knob 12 Piezoelectric Horn Tweeter 10 80hm Woofer Speaker Speaker Filler 400gr m 50x50x4cm Black Sealer specify mt Lem Adhesive B
58. lange M6 4 tips Lock Nut M5 4 tips Lock Nut M4 4 tips Lock Nut 4 2x9x2 Washer WL4x20tc Black Screw Ld M6x25tsp Black Screw M4x30tsp Black Screw Speaker Net Jack Socket Cap 12 Piezoelectric Horn Tweeter 12 80hm Woofer Speaker Speaker Filler 400gr m 50x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw M5x30tc Black Screw PFM 15 2 4 Ohm Speakers Cables Assembly PFM 15 2 4ohm Crossover Board Pcb 313081 Adhesive Rubber Foam 10x1 9mm Specify mt Vertical Male Faston 6 3mm 15E 20W 596 Wire Resistor 2u2 100V 20 Axial Electrolytic Bipolar Capacitor Input Sockets Panel Input Cables Assembly Jack Mono Socket Input Panel Speaker Box Assembly 15 2 Covered Wooden Speaker Box Plastic Handle 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut M5 4 tips Lock Nut 4 3x12 5x1 Black Washer WL3 5x20tt Black Screw WL4x20tc Black Screw M6x25tsp Black Screw Speaker Net 12 Piezoelectric Horn Tweeter 15 4ohm Woofer Speaker Speaker Filler 400gr m 100x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw M5x30tc Black Screw PFM 15 2 8 Ohm Speakers Cables Assembly PFM
59. lified loudspeakers only Precaution gt prevent short circuit during test the oscilloscope must be EARTH insulated this occurs because some test require to connect its probe to the amplifier output non compliance may cause dam ages to oscilloscope inputs circuitry Before removing or installing any modules and connectors discon nect the amplifier from AC MAINS and measure the DC supply voltages across each of the power suppliy capacitors If your measurement on any of the caps is greater than 10Vdc connect a 100Q 10W resistor across the applicable caps to discharge them for your safety Remember to remove the discharge resistor immediately after discharging caps Do not power up the amplifier with the discharge resistor connected Read these notes entirely before proceeding to any operation These notes are not comprehensive of all damages that possibly occur but includes some specifically advices checks and adjustments relative to this amplified speaker Do not check the amplifier with the speaker connected use only an appropriate load resistor Visual Check gt gt Check the speakers for any damaging cone breaking interruption or SO Before proceed to supply the amplifier check visually the internal assembly if appears an evident damage find the most possible reasons that cause it Check the wiring cables for possible interruptions or shorts If the damage has burnt a printed circuit board d
60. lue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw 5 30 Black Screw PFM 12 2A 778150 768218 210215 120857 Speakers Cables Assembly PFM 12 2 Crossover Board Pcb 313075 Adhesive Rubber Foam 10x1 9mm Specify mt Vertical Male Faston 6 3mm 060275 030171 737111 737112 SMS768008 SMS141000 SMS110000 140217 100084 080743 074570 042715 042672 042625 SMS768005 SMS090003 5 5090002 5 5090001 5 5090000 110307 100061 090920 090917 090916 090201 090200 090194 090183 090153 080901 080821 080156 080103 060051 030715 5 5768001 5 5090001 5 5090000 110119 080292 080156 060413 030560 667738 5 5235001 SMS235005 110061 110003 110614 110285 080607 020491 717073 430078 347396 340270 177325 120664 120662 120661 120455 120411 120111 120102 667709 659027 229043 227065 210273 210217 180662 120483 120461 120414 120411 120364 120124 15E 5W 10 Wire Resistor 4u7 63V 20 Axial Electrolytic Bipolar Capacitor 150W 230Vac Power Amplifier Module EU 150W 115Vac Power Amplifier Module US Input Board Pcb
61. nus Input Impedance balanced 30KQ unbalanced 15KQ Voltage Gain 32 1 IMD SMPTE 60Hz 7KHz 4 1 lt 0 1 THD THD N lt 0 1 S N Ratio unweighted gt 100dB Note measured with the limiter enabled Setup gt Connect the Variac between the mains and the amplifier and set it at zero voltage Connect the audio generator to the channel input and set it to 2 2 775mVnws OdB sinusoidal signal Place the temperature sensor between heatsink and the PTC TH1 Connect the CH1 scope GND clip to CN1 pin 1 SGND terminal and the probe tip to R60 side RL1 LF PWR out set it to 20V div 1mS div Connect the CH2 probe tip to R260 side IC202 HF PWR out and set its sensitivity at 20V div Set the LEVEL potentiometer full clockwise The load resistor is disconnected The procedures that follow must be executed subsequently in the order specified Supply Check o Remove the transformer secondary fuses located on SUPPLY board set the Variac to the nominal mains voltage check with the Multim eter the AC supply voltages F1 F2 86 2Vac F4 F5 62 1 5Vac Re set the at zero voltage turn off the amplifier and put the fuses back on its holders Set up the slowly monitoring the Outputs with the oscilloscope CH1 and CH2 connected it should display the sinusoidal input signal amplified with no distortions if a distortion occur or the protection trips check the AMPLIFIER board as suggeste
62. ode 0E22 5W 5 Wire Resistor 1000u 6v3 20 Vert Electrolytic Capacitor 250W Supply Board Pcb 450 0 TIP42C TO220 Pnp Transistor TIP41C TO220 Npn Transistor 2200uF 50VL 18x36mm TWSS Rubycon Fuse Clip 10A max EU US GBUS8D 8A Rectifier Diodes Bridge 16V 1W 596 Zener Diode 1N4002 1A 100V Rectifier Diode 220E 5W 1096 Resistor 4700u 80v 20 Snap In Electrolytic Capacitor Amplifier Panel Chassis 250W 230Vac Transformer EU 250W 115Vac Transformer US Mains Socket 16A 250Vac Bipolar Power Switch T5A Fuse 5x20mm EU T5A Fuse 6 3x32mm US KBPC3502 35A 200V Rectifier Diode Bridge 100nF 1096 250Vac Polyester Capacitor Speaker Box Assembly PFM 15 2A Covered Wooden Speaker Box Plastic Handle 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut M5 4 tips Lock Nut M4 4 tips Lock Nut 4 3x12 5x1 Black Washer WL3 5x20tt Black Screw WL4x20tc Black Screw M6x25tsp Black Screw Speaker Net White Pot Knob 12ohm Piezoelectric Horn Tweeter 15 4ohm Woofer Speaker Speaker Filler 400gr m 100x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw M5x30tc Black Screw M4x25tc Black Screw PFM 15 3A 778150 768248 210215 120857 060214 030095 737115 737116 SMS768010 SMS141000 SMS110000 141102 140217 100965 100084 080743 074570 0427
63. on t try to repair it replace with a new one Test Instruments Audio Generator Dual Trace Oscilloscope Digital Multimeter Temperature Meter 80 500W 40 500W 1000 10W resistors 0 250Vac PFMIO 2A PFM8MA Amplified Loudspeaker The following adjustment and notes are relative to these models only Technical Specifications Dimensions PFM10 2A WxHxD 340x458x285mm Dimensions PFM8MA WxHxD 305x395x275mm Weight PFM10 2A 12Kg Weight PFM8MA 11 5Kg Power Requirements 230Vac 10 50Hz 150VA 115Vac 10 50 60Hz 150VA Output Power 80 90W Max Undistorted Out 8Q 76Vpp Sensitivity PFM10 2A 1W 1m 96dBsp Sensitivity PFM8MA 1W 1m 95dBser Max SPL PFM10 2A continuous 113dBsp PFM10 2A peak 116dBsp Max SPL PFM8MA continuous 114dBsp PFM8MA peak 117dBspi Frequency Response amplifier speaker 60Hz 20kHz only amplifier 3dB 10Hz 60kHz Input Sensitivity OdB 0 775Vams Input Impedance balanced 30KQ unbalanced 15KQ Voltage Gain 31 1 IMD SMPTE 60Hz 7KHz 4 1 lt 0 1 THD THD N lt 0 1 S N Ratio unweighted gt 100dB Note measured with the limiter enabled Setup gt Connect the Variac between the mains and the amplifier and set it at zero voltage Connect the audio generator to the channel input and set it to 1kHz 775mVnws 0dB sinusoidal signal Place the temperature sensor between heatsink and the PTC TH1 Connect the CH1
64. r m 100x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 4mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw M5x30tc Black Screw PFM 15S 4 Ohm Cables Assembly PFM 15S Crossover Board Pcb 313064 the service support is made only by replacement the entire board Input Sockets Panel Input Cables Assembly Jack Mono Socket Input Cables Assembly Jack Mono Socket Input Panel 16x9x1 6 Washer for Jack Speakers Box Assembly d 90 70 Black Duct PFM 15S Covered Wodden Speaker Box Plastic Handle 25x12mm Rubber Foot Suspension Flange M6 4 tips Lock Nut 5 4 tips Lock Nut 4 2x9x2 Washer id WL3 5x20tt Black Screw WL4x20tc Black Screw M6x25tsp Black Screw Speaker Net Jack Socket Cap 15 6ohm Woofer Speaker Speaker Filler 400gr m 100x50x4cm Black Sealer specify mt Adhesive Rubber Foam 10x1 9mm Specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw M5x30tc Black Screw ACTIVE LOUDSPEAKERS Specify United States Version Specify Europe Version Accessories Owner s Manual Mains Cable EU Mains Cable US PFM 10 2A Speakers Cables Assembly PFM 10 2 Crossover Board Pcb 313075 Adhesive Rubber Foam 10x1 9mm Specify mt 120857 060294
65. scope GND clip to CN4 pin 1 SGND terminal and the probe tip to R50 side RL1 PWR out set it to 20V div 1mS div Connect the CH2 probe tip to R58 side C28 and set its sensitivity at 0 2V div Set the LEVEL potentiometer full clockwise The load resistor is disconnected The procedures that follow must be executed subsequently in the order specified Supply Check gt gt Remove the transformer secondary fuses located on SUPPLY board set the Variac to the nominal mains voltage check with the Multim eter the AC supply voltages F1 F2 71 2Vac Re set the Variac at zero voltage turn off the amplifier and put the fuses back on its holders Set up the Variac slowly monitoring the Outputs with the oscilloscope CH1 connected it should display the sinusoidal input signal amplified with no distortions if a distortion occur or the protection trips turn off the amplifier and check the AMPLIFIER board as suggested in the ADVICES section Finally verify the DC supplies on SUPPLY board CN4 pin 2 Vcc1 50 2 CN5 pin 1 2 Vcc1 5042Vdc CN4 pin 4 15 1Vdc CN4 pin 5 15 1Vdc gt If one or more voltages don t correspond check the rectifiers capacitors and transformers disconnecting them from circuitry refer to schematics Channel Check gt Verify with the Multimeter the insulation between the heatsink and the transistors collectors gt Verify with the Multimeter the PTC resistor value TH1 it mu
66. sformer US Mains Socket 16A 250Vac Bipolar Power Switch T4A Fuse 5x20mm EU T6 3A Fuse 5x20mm EU T6 3A Fuse 6 3x32mm US T4A Fuse 6 3x32mm US KBPC3502 35A 200V Rectifier Diode Bridge 100nF 10 250Vac Polyester Capacitor Speaker Box Assembly PFM 15 2MA Covered Wooden Speaker Box Belt Handle 25x12mm Rubber Foot M5 4 tips Lock Nut M4 4 tips Lock Nut WL4x20tt Black Screw M4x30tsp Black Screw Speaker Net White Pot Knob 12 Piezoelectric Horn Tweeter 15 4ohm Woofer Speaker Speaker Filler 400gr m 100x50x4cm Black Sealer specify mt Lem Adhesive Blue Plate 5mm Black Shakeproof Washer 5 3X10X1 Black Washer WL3 5x35tt Black Screw WL3 5x20tt Black Screw WL3 5x12tt Black Screw 5 30 Black Screw M4x25tc Black Screw Lem Adhesive Logo Note Each spare part is single quantity unless otherwise specified Asterisk prefix explanation Omitted First level spare part One asterisk Second level part of previous listed first level part Two asterisk Third level part of previous listed second level part Three asterisk Any request for not above mentioned part must encompass specific description including 1 Model name 2 Section name 3 Module code 4 Reference name 5 Quantity number
67. sible distortion and oscilla tion If there is a distortion read the section ADVICES CURRENT AMPLIFIER TEST Connect the 8Q 500W load on the output and repeat the test LIMITER CHECK Increase the input signal of 10 dB and verify the output voltage and wave shape remain constant BIAS ADJUSTMENT With resistive load connected wait until the temperature reach 50 c Set the generator level at zero connect the Multimeter across the R50 and R53 resistors then adjust VR1 trimmer to read 5 0 1mVdc BANDWIDTH CHECK Switch alternatively the generator frequency to 100Hz and 10kHz no level changes must be detectable respect 1kHz Switch the generator frequency to 30Hz and verify the output level decreases about 4 5dB respect to 1 KHz level OFFSET SENSOR CHECK Set the Variac to zero voltage output disconnect resistive load from the amplifier output connect temporarily by means of a suitable conductor wire CN4 pin 4 15Vdc to R72 side RL1 the protection circuitry Q14 15 16 detect the DC voltage and open the output relay RL1 within 3 seconds approx Remove the connection wait until the relay switch on and after some seconds repeat the check with 15Vdc available on CN4 pin 5 the protection circuitry must open the relay again SIGNAL TO NOISE RATIO CHECK Disconnect the audio generator and short the input pin 1 2 3 of XLR Socket shorted the output signal noise must be less than 1mV PFMI5 2A PFMI5 2MA Amplified Lou
68. st be between 50Q and 2000 gt VOLTAGE AMPLIFIER TEST Increase slowly the Variac The channel output signals must be symmetrical respect the GND without visible distortion and oscilla tion If there is a distortion read the section ADVICES gt CURRENT AMPLIFIER TEST Connect the 80 500W load on the output and repeat the test gt LIMITER CHECK Increase the input signal of 10 dB and verify the output voltage and wave shape remain constant gt BIAS ADJUSTMENT With resistive load connected wait until the temperature reach 50 c Set the generator level at zero connect the Multimeter across the R50 and R53 resistors then adjust VR1 trimmer to read 5x0 1mVdc gt BANDWIDTH CHECK Switch alternatively the generator frequency to 100Hz and 10kHz no level changes must be detectable respect 1kHz Switch the generator frequency to 30Hz and verify the output level decreases about 4 5dB respect to 1 KHz level c OFFSET SENSOR CHECK Set the Variac to zero voltage output disconnect resistive load from the amplifier output connect temporarily by means of a suitable conductor wire CN4 pin 4 15Vdc to R72 side RL1 the protection circuitry Q14 15 16 detect the DC voltage and open the output relay RL1 within 3 seconds approx Remove the connection wait until the relay switch on and after some seconds repeat the check with 15Vdc available on CN4 pin 5 the protection circuitry must open the relay again gt SIGNAL TO NO
69. t 6 dB oct 12 6 dB oct 3 x JACK CONNECTIONS passive 2 x JACK input link versions input link out CONSTRUCTION ____ 2 Chipboard covered with blue carpet DIMENSIONS mm WxHxD 340x458x285 390x508x325 458x578x405 482x608x405 460x580x410 390x508x325 305x395x275 _ 478x508x478 AMPLIFIER SPECIFICATIONS active EIA OUTPUT POWER INPUT SENSITIVITY dB V 0 0 775V NPUT IMPEDANCE ISTORSION CONTROLS 30 balanced 15 unbalanced 2 kHz 18 dB oct From 80 to 320 0 12db oct 0 02 THD Noise CONNECTIONS OWER SUPPLY Volume Shield on off Volume Shield on off XOVER frequenc JACK XLR F in KEE XLR F JACK input link JACK XLR M out See label on the apparatus SYSTEM SPECIFICATIONS SENSITIVITY 5 dB 98 9 9 9 9 MAX SPL continuous 1 16 19 120 19 176 14 8 MAXSPLpeak 16 79 427 22 19 171 114 DISPERSION Oxv 90x60 90x60 90 60 90x60 90 60 90x60 90x90 Transistor Packages TO92 TO126 TO220 TO3P BC547 BC557 MJE340 MJE350 TIP41C TIP42C 25 3284 25 1303 1 Collector 1 802 1 Base 1 Base 2 Base 1 Emitter 2 Collector 2 Collector 3 Emitter 2 Collector 3 Emitter 3 Emitter 2N5401 2N5550 3 Base 4 Collector 4 Collector 1 Emitter 4 Collector 2 Base 3 Collector
70. ve high rail connect the probe to D26 anode see Fig 2 Trace C LOAD CURRENT TEST Connect the 40 500W load on the output and repeat the INITIAL and HIGH RAIL checks SIGN COMP SENSOR CHECK Set the LEVEL pot to minimum set the scope timebase at 1V div 1mS div then increase the level and check the SIGNAL COMP led activity it must turn on green light when the amplifier output is higher than 1Vp Set the scope at 20V div and increase the level check the led it must change from green to red colour when the amplifier output signal is 5042Vp increasing the input level the output signal must keep the same level this is due to the limiter compression circuitry IC2 DL1 IC1 BIAS ADJUSTMENT With the load connected wait until the temperature reach 50 c Set the generator level at zero connect the Multimeter across the resistors R60 then adjust VR1 trimmer to read 15 0 imVdc BANDWIDTH CHECK The bandwidth of the amplifier board only is linear within the audio range 20Hz 20kHz but in this case is limited by the X OVER circuitry on CONTROLS amp CROSSOVER board Figure 4 and 5 show the LowPass and the HighPass response check the correspondance with it for some frequency values 50 100 150 300 for example OFFSET SENSOR CHECK Set the Variac to zero voltage output disconnect resistive load from the amplifier output connect temporarily by means of a suitable conductor wire CN2 pin 3 15Vdc to R72 side RL1 the

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