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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 

Darkhorse

DH15H

MODEL TYPE: YS1085

Summary of Contents for Darkhorse DH15H

Page 1: ...e 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 Darkhorse DH15H MODEL TYPE YS1085 ...

Page 2: ... spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped AVIS AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE N ENLEVEZ PAS LE COUVERT OU LE PANNEAU ARRIERE NE CONTIENT AUCUNE PIECE REPARABLE PAR L UTILISATEUR CONSULTEZ UN TECHNICIEN QUALIFIE POUR L ENTRETIENT Instructions relatives au risque de feu choc élect...

Page 3: ...ERT STER RT SWT 1 3924 1 4 JCK PCB MT VERT 2XTIP HICURNT 3 2471 T1A 5X20MM FUSE 2 8696 AP SERIES HANDLE BARE 6061 T6 ALUM 1 3438 IEC PWR SOC W 205TAB FUSE 10A250V 1 3810 4 NYLON CABLE TIE 5 8430 KNOB CHICKEN BEAK 1 8431 KNOB BUDGIE BEAK 3 8923 6 32 THUMB SCREW ALUMINUM 4 3428 8 3 18 SJT AC LINE CORD REMOVABLE 1 8800 6 32 KEPS NUT ZINC 3 8844 6 32 PEMNUT 4 4875 1 4W 10R 5 T R RES 1 4816 1 4W 33R 5 ...

Page 4: ...t Gain Preamp 1 2 12AX7 BRIT PURE USA UP MID DWN V4 A Phase Spliter 12AX7 16 ohm 8 ohm Preamp 1 2 12AX7 V4 B V3 1 2 12AU7 V5 A 1 2 12AU7 V5 B 6V6 V1 6V6 V2 0 dB BRIT PURE USA STBY 6V6 12AU7 UP MID DWN USA Tone Stack Bass Treble Master BRIT Tone Stack Bass Treble BLOCK DIAG DH15H 00 1v0 Block Diagram for DH15H DESIGNED AND MANUFACTURED BY YORKVILLE SOUND TYPE YS1085 Speaker Configuration 1x1 6 2x1 ...

Page 5: ...K 2X_TRIODE_HCT V4 C P6 A 4425 M 15A 500K Gain C14 450V 10U C22 450V 22U 2X_TRIODE_HCT V5 C C15 450V 22U R23 1 4W 33K V4 B 12AX7 R45 1 4W 56K V3 A 12AX7 CE 12AU7 MODE 8 W20 H 8 4 W12 D 6 18 7Vdc 4 8 W20_ D 4 W20 D 8 6 W20_ F 8 C9 50V 470P R24 1 4W 100K C11 250V 4N7 C21 400V 1N GRN R31 1 4W 100R C18 275V 22N S1 POWER 6V6 MODE C2 400V 22N R11 1 4W 1M 7 W20 G 8 W9 A 2 Chassis W1 GRN R28 1 4W FLMP 2K2...

Page 6: ...score score StepAndRepeat X2 8 275Y2 6 550 ClinchRepeats X2 8 275Y1 0 000 ...

Page 7: ... F F F F F F P P P P P P P P N N N N N N N N N N N N K K K K K K K K NEW DARK HORSE M1420 P4 P5 P6 P7 Treble Bass Gain Volume 4424 4424 4425 4425 8430 8431 8431 8431 12 9 6 3 13 11 10 5 4 8 7 2 1 DATE MODEL S VER DESCRIPTION OF CHANGE D D V V N N D D D D V V V V N N N N DARK HORSE M1420 DEC 09 v100p3 Value Changes Repl Middle score w Route v100 Replaced PURE switch with DPDT ON ON ON used stereo p...

Page 8: ...StepAndRepeat X2 8 275Y2 6 550 ClinchRepeats X2 8 275Y1 0 000 ...

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