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U.S.A. 

Yorkville Sound Inc. 

4625 Witmer Industrial Estate 

Niagara Falls, New York 

14305 USA 

Voice: (716) 297-2920 

Fax: (716) 297-3689 

WORLD HEADQUARTERS 

WEB ACCESS: http://www.yorkville.com 

CANADA 

Yorkville Sound 

550 Granite Court 
Pickering, Ontario 

L1W-3Y8 CANADA 

Voice: (905) 837-8481 

Fax: (905) 837-8746 

Quality and Innovation Since 1963

Printed in Canada 

SERVICE MANUAL

NX720S

MODEL TYPE: YS1055

Summary of Contents for ELITE LS720P

Page 1: ...Voice 716 297 2920 Fax 716 297 3689 WORLD HEADQUARTERS WEB ACCESS http www yorkville com CANADA Yorkville Sound 550 Granite Court Pickering Ontario L1W 3Y8 CANADA Voice 905 837 8481 Fax 905 837 8746 Quality and Innovation Since 1963 Printed in Canada SERVICE MANUAL NX720S MODEL TYPE YS1055 ...

Page 2: ...a propre ventilation Ne procédez pas à l installation près de source de chaleur tels que radiateurs registre de chaleur fours ou autres appareils incluant les amplificateurs qui produisent de la chaleur Les dispositifs marqués d une symbole d éclair sont des parties dangereuses au toucher et que les câblages extérieurs connectés à ces dispositifs de connection extérieure doivent être effectivés pa...

Page 3: ...5 A Z582 3v0 S 720 WATT ACTIVE SUBWOOFER ENCLOSURE 720 1 3 2 1 3 2 1 3 2 2 3 1 NX720S LEVEL LINE SPKR BOOST FREQUENCY HF ROLLOFF 90 45 150 90 ALL CONNECTIONS FUNCTION AS INPUTS OR OUTPUTS IN ALL CONFIGURATIONS THE NX720S CAN BE CONNECTED BEFORE OR AFTER THE FULL RANGE ENCLOSURE STEREO ACTIVE SPEAKER CONFIGURATION INPUT Switch set to LINE MIXER NX720S STEREO PASSIVE SPEAKER CONFIGURATION INPUT Swit...

Page 4: ...DIODE T R 8 6119 W250 47K 5 MINI T R RES 7 6421 MR752 200V 6A0 DIODE 4 4836 W250 68K 5 T R RES 2 6733 BAT85 30V 0A2 DIODE SCHT T R 6 4929 W250 82K 5 2INU T R RES 1 6818 1N5245B 15V0 0W5 ZENER 5 T R 9 6120 W250 100K 5 MINI T R RES 10 6872 MC7815CT TO220 P 15V0 REG V1 3 4776 W250 113K 1 T R RES 2 5114 MPSA92 TO92 PNP TRAN T R TA 10 4638 W500 150K 5 T R RES 1 5105 MPSA13 TO92 NPN DARL T R TA 2 6126 W...

Page 5: ...70P 100V 5 CAP T R RAD CER 2NPO D7 6733 BAT85 30V 0A2 DIODE SCHT T R R5 5016 1W00 9K760 0 5 T R RES R85 4836 W250 68K 5 T R RES R165 5016 1W00 9K760 0 5 T R RES C38 5275 __3N3 100V 5 CAP T R RAD 2FLM D8 6432 1N5248B 18V0 0W5 ZENER 5 T R R6 4762 W250 9K760 0 1 T R RES R86 4758 W250 953R 1 T R RES R166 6119 W250 47K 5 MINI T R RES C39 5271 __5N6 100V 5 CAP T R RAD 2F D9 6733 BAT85 30V 0A2 DIODE SCHT...

Page 6: ...30VAC 50 Hz 1 2A 276 VA typical 360 VA max 120VAC 60 Hz 2 4 A 288 VA typical 360 VA max Inputs 1 4 inch Jacks 1 in 1 Link Out line or spkr level Inputs XLR L R Male Female XLR Links Level Controls Main Volume EQ Controls High Frequency Cut Off 90 150 Hz Limiter RMS Peak Current LED Indicators Power Limit Clip Other Controls Features Selectable line or speaker level input 45 Hz 90 Hz variable boost...

Page 7: ...Q HP LIMITER LED RMS LIMITER POWER SUPPLY CLASS D AMPLIFIER WOOFER CLASS D AMPLIFIER WOOFER BLOCK DIAGRAM LOCATED BELOW NOTE Shorting R47 will eliminate feedback and audio signal allowing troubleshooting of Level Shift drivers and output devices SILENT ON OFF VIA Q19 SLOW DETECT FAST DETECT LP LP VARIABLE LP LP VARIABLE LEVEL 1 3 2 1 3 2 1 3 2 2 3 1 LINE SPKR Block Diagram for NX720S D E S I G N E...

Page 8: ...63V 150N U16 B NE5532N 100V C137 100N 1 4W 1K5 R164 MINI R202 2 0W 1K8 TO92 2N5551 Q5 5107 R104 1 4W 22K MINI R107 1 4W 22K MINI R101 1 4W 3K3 MINI 8 V 4 V U16 C D B 2339 10K HF ROLLOFF P6 A R116 1 4W 2K MINI 3392 W9 AC BLK BLK 8 V 4 V U13 C R139 1 4W 10K MINI 100V C62 47N C73 63V 100N U15 E 1 4W 1K R134 MINI U21 A TL072 8 V 4 V U21 C 400V C93 2N2 R11 1 4W 47K MINI 3 W7 C 3 4007 D49 1 4W R90 15K M...

Page 9: ...00N 100V C71 100N BAT85 D1 0A2 100V C16 100N R78 1 4W 18K7 3856 FAN BLACK R211 1 4W FUSIBLE 11R 1 4W 4K7 R62 RAD 100V C24 100N 1 4W 9K09 R265 MINI 5 0W 0R047 R31 C4 1000V 470P 2 0W R61 2R 4148 D5 11 IN 10 OUT U10 E 74HC14N 6603 9 IN 8 OUT U10 D 74HC14N 6603 5 IN 6 OUT U9 C 74HC14N 6603 C20 3U3 140V C31 3U3 140V PSGND S3 WOOFER C22 3U3 140V PSGND 147V LVGNDPS PSGND R64 1 8W FLMP 10R0 LVGND2 WOOFGND...

Page 10: ...1 MC78L05ABPRM 220K LM311 MC33079P LM13600N 22M 22K 100N 100N 47K 15K TL072 B 10K 4148 68K 17K40 6K8 470R 1K5 100N B 10K YEL 1K2 TL072 NE5532N 100N 4148 10K 63V 4U7 63V 2U2 MPSA92 4148 1U 63V 4007 18uH 4007 4007 2200U 50V 113K 250V 4N7 10V0 288UH 12K 5 0W 12K 5 0W 12K 5 0W MPSA13 4148 1K5 9K76 1 0W B 10K 4N7 3U3 140V 3U3 340V 140V 3U3 12K 5 0W 5 0W 0R047 3U3 140V IRFP23N50L IRFP23N50L MR752 250V 6...

Page 11: ...MUST NOT BE ABOVE TOP OF RESISTOR 1 ATTACH ALL 4 NUT SCREW AND WASHERS FOR THE TRANSISTOR SPRING WITH THE NUT ON THE TOP 2 MAKE SURE TO RTV ALL LARGE CAPACITORS TO SOMETHING CLOSE SEE LAYOUT DIAGRAM M PRODUCTION NOTES C E B TO 92 BC560C BC550C B E C TO 220 BDX53B 53C BDX54B 54C STYLE_P34 E B C TO 126 MJE350 MJE340 MJE270 BD238 BD140 BD139 MJE271 BD237 E C B MPSA63 MPSA43 2N5551 TO 92 MPSA92 MPSA13...

Page 12: ...ounting holes changed to slots N N N 17 JUL 2012 20 AUG 2010 V03 V05 V D D ADD W3 AND W10 CONN FOR CH1337U Change to Ai tabs 4100 new pattern updates GG 1 00 MARCH 2010 D MADE FROM NX720S M1330 V1 00 IN MARCH 2010 JUNE 2010 2 00 FOR PRODUCTION REQUESTS ADD 2327 4146 4151 6 RESISTOR CHANGES AND A FEW BOARD MOD S FORCE UPDATED PARTS TONY S LIST APRIL 2010 14 FEB 2011 V04 M PCB_DATABASE_HISTORY PC821...

Page 13: ...OB ROUND PUSHBUTTON 1 4 GREY 11 3925 XLR FEML PCB MT VERT 24MM U CO 12 3453 XLR MALE PCB MT VERT 13 3921 1 4 JCK PCB MT VERT STER RT SW 14 3585 DPDT ROKR SW QUIK 250 AC PWR I 15 2398 4 0 AMP CIRCUIT BREAKER 16 3645 AC SOCKET RECEPTACLE WITH 0 250 17 8906 14X2 ALLEN FLAT HD WOOD SCRW J 18 3426 8 3 16 SJT AC LINE CORD REMOVB 19 20 21 22 NOTE Replacement grilles are Special Order and are only availab...

Page 14: ... WOOD SCRW JS500 4 5199 100P 100V 2 CAP T R RAD CER 2NPO 2 4813 1 4W 6R2 5 T R RES 2 4143 NYLON SPACER L 312 1D 171 OD 375 17 5408 _47P 100V 10 CAP T R BEAD NPO 1 2010 1 6W 10R0 2 FLAME PROOF T R RES 4 3859 1 2 PLASTIC HEX SPACER 4 2 5412 220P 100V 10 CAP T R BEAD NPO 1 2038 1 4W 11R FUSIBLE T R RES 2 7471 15 8R 1000WPRGM 3 V C NEO SPEAKER 1 5194 470P 1000V 10 CAP T R RAD CER 2Y5P 1 6134 1 4W 47R ...

Page 15: ...T FREQUENCY NX720S LEVEL dB 6 00 0 INPUT A THRU A INPUT B THRU B INPUT SELECT P A R A L L E L P A R A L L E L A Z552 1v1 PR02 INPUT A THRU A YS 9917 Green Knob qty 1 YS 9916 Gray Knob qty 1 YS 9918 Blue Knob qty 1 WIRING NX720S Z552 control KNOB COLORS 00 1v2 ai ...

Page 16: ...100N IRFP23N50L 14K0 4148 2 0W 2R 63V 4U7 100N 100N 63V 2U2 1U 63V 4007 MPSA92 4007 4007 50V 2200U 113K 250V 4N7 12K 5 0W 12K 5 0W 12K 5 0W 10V0 288UH 100K TL072 MPSA13 B 10K 3U3 140V 4N7 0R047 5 0W 12K 5 0W 3U3 140V 3U3 340V IRFP23N50L MR752 50V 2200U 3300U 180V 1300UH 3300U 180V 470P 6 C I R 9K76 1 0W MR752 9K76 1 0W 3U3 140V 2 2 1 2 V02 V02 NX720S 2 2 V02 M1330 NX720S M1330 CHASSIS GROUND R3 C4...

Page 17: ... 2200U 4007 4007 4007 10V0 3U3 340V 3U3 140V 4N7 IRFP23N50L 0R047 5 0W 12K 5 0W 3U3 140V MR752 250V 4N7 3300U 180V 50V 2200U 3300U 180V 1300UH MR752 3U3 140V 2 2 V1 00 CHASSIS GROUND R72 R50 R29 C15 C55 D20 R33 D15 R39 R144 D85 R258 R263 R76 R80 R81 R221 C42 R265 D5 R260 R211 J9 R78 D17 R53 R57 R41 D16 C9 R19 R255 Q3 C133 R140 R34 R32 J8 D19 C39 R48 Q13 R52 C49 R37 C24 R46 C35 C25 R82 C76 D32 W20 ...

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