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1. X 3 Page 22 N mawa ayama 1 SG o wama val m u E sio mms Jt icz wo s a emo gt us FS 100 o nasi X H Lt K i Y m A 000 s on ___2. 20 m aye X 2 Page 21 HH p m
3. 5 way Binding Posts Dimensions X1 X2 19 W x 10 75 D x 3 5 H 483 x 273 x 89 mm a cette 19 W x 10 75 D x 5 25 H 483 x 273 x 133 mm Weight 16 3 lbs 17 8 lbs 20 2 lbs 21 6 lbs 74kg 81 0 92kg 9 8kg Specifications and design are subject to change without notice for purpose of improvement 5 TROUBLESHOOTING SYMPTOM CAUSE SOLUTION UNIT DOES NOT PRODUCE SOUND POWER LED DOES NOT LIGHT POWER SWITCH NOT IN ON POSITION POWER CABLE NOT CONNECTED TO AMPLIFIER OR TO OUTLET AC OUTLET NOT ACTIVE MAIN AMPLIFIER FUSE DEFECTIVE MOVE POWER SWITCH TO ON POSITION CONNECT POWER CABLE TO AC SUPPLY CHECK CONDITION OF OUTLET REPLACE AMPLIFIER MAIN POWER FUSE ON REAR PANEL WITH CORRECT TYPE AND RATING POWER LED LIGHTS BUT NO SOUND IS PRODUCED BY AMPLIFIER NO INPUT SOURCE SIGNAL INPUT SOURCE NOT CONNECTED INPUT CONNECTING CABLE DEFECTIVE SPEAKER S NOT CONNECTED SPEAKER CABLE DEFECTIVE SPEAKER SYSTEM S INOPERATIVE AMPLIFIER S LEVEL CONTROLS ARE SET TO ZERO CHECK FOR PROPER FUNCTION OF INPUT SOURCE DEVICE CHECK INPUT CABLES AND CONNECTIONS REPLACE QUESTIONABLE CABLES WITH KNOWN GOOD CABLES CHECK SPEAKER CABLES AND CONNECTIONS REPLACE QUESTIONABLE CABLES WITH KNOWN GOOD CABLES CHECK OPERATING CONDITION AND STATUS OF SPEAKER SYSTEM S BE SURE THE LEVEL CONTROLS ARE PROPERLY
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5. SERVICE MANUAL X1 X2 X3 X4 PROFESSIONAL AMPLIFIERS Diagrams Page 2 Features Operating Instructions Page 3 Specifications Page 5 Troubleshooting Page 6 Parts BER m mn Sede Page 7 Schematics Page 20 X1 52 XS s ASPA d CE gee hid O 2224 3 adr INTRODUCTION Congratulations on purchasing a Gemini Power Amplifier This state of the art power arnplifier includes the latest features and is backed by a three year limited warranty Prior to use we suggest that you carefully read all the instructions FEATURES State of the art bi polar output stage technology for the finest sound quality and reliability High output power to drive professional loudspeakers without clipping Comprehensive protection circuity Short Circuit DC Thermal Cut off Sub Ultrasonic Frequency Filters Turn on Delay Main Fuse Secondary DC Fuses Three modes of operation stereo parallel mono and mono bridge Active 1 4 Jack balanced unbalanced inputs Ground lift switch for flexibility in installations Signal LEDs and Clip LEDs for better control on X1 X2 X3 amplifers Large VU meters and Clip LEDs for better control on X4 amplifier Efficient dual aluminum ext
6. 076 073 076 100 BAND HEAD TAPPING SCREW NUT BTS 3 3x10 AB PAN HEAD TAPPING SCREW 65 3 4x8 N PAN HEAD MACHINE SCREW 3x12 Y PAN HEAD MACHINE SCREW 4x18 Y PAN HEAD MACHINE SCREW PMS 5x8 B NUT WASHER30 B BAND HEAD MACHINE SCREW 4 15 NUT KNUT 49 B PLAIN WASHER40 Y SPRING WASHER46 Y MASTER CARTON PRINTED CIRCUIT BOARD X4 1 PRINTED CIRCUIT BOARD X4 2 INTEGRATED CIRCUIT NJM4558DD INTEGRATED CIRCUIT OR BA15218 INTEGRATED CIRCUIT OR 5218A SILICON TRANSISTORS 290945 Q P SILICON TRANSISTORS OR 2SC1815 Y GR SILICON TRANSISTORS 2SA733 Q P SILICON TRANSISTORS OR 2SA1015 GR Y SILICON TRANSISTOR 2SA1837 SILICON TRANSISTOR OR 2SA1306 SILICON TRANSISTOR 2504793 076 072 076 101 076 034 076 102 076 037 076 056 076 060 076 114 076 057 076 061 076 115 076 134 086 029 086 512 DIODES 079 034 079 003 079 012 079 019 079 056 079 037 LEDS 080 085 080 110 080 086 SWITCHES 071 220 081 023 081 030 081 041 083 099 SILICON TRANSISTOR OR 2SC3298 Y SILICON TRANSISTOR 2SA1145 Y OR R SILICON TRANSISTOR OR 2SA949 Y OR R SILICON TRANSISTOR 2SC2705 Y OR O SILICON TRANSISTOR OR 2SC2229 Y OR O SILICON TRANSISTORS 2SA1516 O R SILICON TRANSISTORS OR 2SA1386 O R SILICON TRANSISTORS OR 2541962 O R SILICON TRANSISTORS 2503907 O R SILICON TRANSISTORS OR 2SC3519 O R SILICON TRANSISTORS OR 2SC5242
7. 076 134 086 030 086 512 087 027 079 034 079 003 079 012 079 019 079 056 079 037 SILICON TRANSISTORS 2SA733 Q P SILICON TRANSISTORS OR 2SA1015 GR Y SILICON TRANSISTOR 2541943 0 OR R SILICON TRANSISTOR OR 2SA1429 0 OR R SILICON TRANSISTOR 2SC5200 0 OR R SILICON TRANSISTOR OR 2502155 0 OR R SILICON TRANSISTOR 2SA1837 SILICON TRANSISTOR OR 2SA1306 SILICON TRANSISTOR 2SC4793 SILICON TRANSISTOR OR 25 3298 SILICON TRANSISTOR 2SA1145 Y OR R SILICON TRANSISTOR OR 2SA949 Y OR R SILICON TRANSISTOR 2SC2705 Y OR O SILICON TRANSISTOR OR 2SC2229 Y OR O SILICON TRANSISTOR MPSA13 BRIDGE RECTIFIER KBPC1504W RELAY SRET 202DP VU METER RECTIFIER DIODE 1N4004 SILICON DIODE 1N4148 ZENER DIODE 1 2W 12V RD12EB HZ12B2 ZENER DIODE 1 2W 5 6V RD5 6EB2 ZENER DIODE 1 2 W 3 3V ZENER DIODE 1 2W 22V RD22EB2 MTZ22B 080 085 080 110 080 086 071 220 081 023 081 030 081 041 083 099 001 613 092 078 092 105 100 070 100 070 100 072 161 172 161 109 059 234 147 024 093 370 093 371 093 410 093 369 073 506 063 005 062 024 061 110 061 114 061 102 061 104 061 031 LED RED 5 LED YELLOW 5 LED GREEN 50 ROTARY VR 10KA L 15MM SLIDE SWITCH 2P2C UL SLIDE SWITCH SLIDE SWITCH POWER SWITCH DC FAN 24V 80x80x25mm 6 39 PHONE JACK AC INLET SOCKET FUSE FUSE 20mm RU UTE 10A 250V FUSE 20mm RU UTE 10A 250V 110V FUSE 20mm VB
8. 076 099 PAN HEAD MACHINE SCREW 3x12 Y PAN HEAD MACHINE SCREW 4x18 Y PAN HEAD MACHINE SCREW PMS 5x8 B NUT WASHER30 B BAND HEAD MACHINE SCREW M4x15 AB NUT KNUT 49 B PLAIN WASHER46 Y SPRING WASHER46 Y MASTER CARTON PRINTED CIRCUIT BOARD X4 1 PRINTED CIRCUIT BOARD X4 2 INTEGRATED CIRCUIT NJM4558DD INTEGRATED CIRCUIT OR BA15218 INTEGRATED CIRCUIT OR 5218A SILICON TRANSISTORS 2SC945 Q P SILICON TRANSISTORS OR 25 1815 Y GR SILICON TRANSISTORS 29733 Q P SILICON TRANSISTORS OR 28A1015 GR Y MASTER CARTON SILICON TRANSISTOR 2541943 0 OR R SILICON TRANSISTOR OR 2541429 0 OR R SILICON TRANSISTOR 2505200 0 OR R SILICON TRANSISTOR OR 2502155 OR R SILICON TRANSISTOR 2SA1837 Page 14 076 073 076 100 076 072 076 101 076 034 076 102 076 037 076 134 086 030 086 512 079 034 079 003 079 012 079 019 079 056 079 037 SILICON TRANSISTOR OR 2SA1306 SILICON TRANSISTOR 25 4793 SILICON TRANSISTOR OR 25 3298 SILICON TRANSISTOR 2SA1145 Y OR R SILICON TRANSISTOR OR 2SA949 Y OR R SILICON TRANSISTOR 2SC2705 Y OR O SILICON TRANSISTOR OR 25 2229 OR O SILICON TRANSISTOR MPSA13 BRIDGE RECTIFIER KBPC1504W RELAY SRET 202DP RECTIFIER DIODE 1N4004 SILICON DIODE 1N4148 ZENER DIODE 1 2W 12V RD12EB HZ12B2 ZENER DIODE 1 2W 5 6V RD5 6EB2 ZENER DIODE 1 2 W 3 3V ZENER DIODE 1 2W 22V RD22EB2 MTZ22B 080 085 080 110
9. ELECTROLYTIC CAPACITORS 220u 16V 146 509 PIN CONNECTOR 054 013 POLYESTER CERAMIC CAPACITOR 0 01u 50V 190 075 HEAT SHRINK TUBING UL 054 022 POLYESTER CERAMIC 280 35mm CAPACITOR 0 047u 50V 190 230 HEAT SHRINK TUBING UL 054 026 POLYESTER CERAMIC 350 35mm CAPACITOR 0 1 50 90065 TUBE 10 30mm 054 030 POLYESTER CERAMIC CAPACITOR 0 22 50V 003 605 CABLE TIES CV 100 054 071 POLYESTER CERAMIC CAPACITOR 0 1Ww250V 092 030 2P P 2 5mm CONNECTOR BASE B2B XH A 092 031 4P CONNECTOR BASE B4B XH A 180 091 490 4P CONNECTOR WITH WIRE XH 4P STRIPx3 210mm 093 416 GROUND WIRE WITH RING TONGUE GRN YLW 150mm 093 384 GROUND WIRE WITH RING TONGUE BLACK 210mm 209 004 LEAD WIRE WHITE UL1015418AWG 6x6 310mm 202 110 LEAD WIRE RED UL1015418AWG 6x6 310mm 060 703 JUMPER WIRE 0 7 52mm P 5mm 060 703 JUMPER WIRE 0 7 52mm P 6mm 060 703 JUMPER WIRE 0 7 52mm P 7 5mm 060 703 JUMPER WIRE 0 7 52mm P 10mm 060 703 JUMPER WIRE 0 7 52mm P 12 5mm 060 703 JUMPER WIRE 0 7 52mm P 15mm 060 703 JUMPER WIRE 0 7 52mm P 20mm Page 19
10. X1 X2 4 Output Power EIA 1kHz 1 THD Wrms Both Channels Driven 8Q 85 140 200 200 Both Channels Driven 4Q 110 200 300 300 Mono Bridge 8Q 220 400 600 600 Dynamic Headroom dB At8Q 1 4 1 5 1 6 1 6 At4Q 1 9 2 0 2 2 2 2 Frequency Response 30 Hz 50 kHz Total Harmonic Distortion less than 0 05 typical 0 02 at 1 kHz Signal to Noise ratio 100 dB below rated power 8 Damping factor greater than 200 8 Slew CI 20 V uS Voltage gain dB 28 30 32 32 Input Sensitivity for rated power at 8 1 Vrms Input Impedance Unbalanced 10 Input Impedance Balanced sse 20 Power consumption W 500 800 1200 1200 at rated power at 40 both channels driven AC Power Requirements 110 120 V 60 Hz and 220 240 V 50 Hz Indicato S y u cerne oet tte dn 1 Power LED 1 Protect LED 1 Signal LED per Channel for X1 X2 X3 1VU meter per Channel for X4 C60IJIRG dore terne tete es Fan Front to Rear Forced Air Protection cien Short Circuit DC Thermal Cut off Sub Ultrasonic Frequency Filters Turn on Delay Main Fuse Secondary DC Fuses Connectors Balanced Unbalanced Inputs 1 4 Jack Speaker Outputs
11. 058 100 063 100 064 161 172 161 109 059 232 147 024 093 370 093 371 093 410 093 369 RECTIFIER DIODE 1N4004 OR SILICON DIODE 1N4148 ZENER DIODE 1 2W 12V RD12EB HZ12B2 ZENER DIODE 1 2W 5 6V RD5 6EB2 ZENER DIODE 1 2 W 3 3V ZENER DIODE 1 2W 22V RD22EB2 MTZ22B LED RED 5 LED YELLOW 5 LED GREEN 50 ROTARY VR 10KA L 15MM SLIDE SWITCH 2P2C UL SLIDE SWITCH SLIDE SWITCH POWER SWITCH DC FAN 24V 80x80x25mm 6 JACK AC INLET IEC SOCKET FUSE FUSE 20mm UL 6A AC250V FUSE 20mm VBS 4 250V FUSE 20mm VBS 2 250V 4P SPEAKER TERMINAL FUSE JH 6 POWER TRANSFORMER EI 86x65 COIL 1 3uH 1 0 9 9 1 2T CORD SVT AWG 18x3C VW 1 UL AC CORD 220V VDE AC CORD ARGENTINA AC CORD 230VBS 073 506 063 005 062 023 061 032 061 101 061 105 061 113 061 108 061 106 060 218 060 237 060 245 060 253 060 259 060 279 060 289 060 300 060 306 060 315 050 153 050 197 050 049 METAL FILM RESISTORS 1 8W 10KQ 2 THERMISTOR PTH9M04BE222TS2F333 WIRE WOUND RESISTOR CERAMIC 3W 0 150 METAL FILM RESISTORS 2W 1 5KQ METAL FILM RESISTORS 1W 8 20 METAL FILM RESISTORS 1W 6 81 METAL FILM RESISTORS 1 4W 51 11 1 METAL FILM RESISTORS 1 4W 114 1 METAL FILM RESISTORS 1 AW 2 21KQ 1 CARBON FILM RESISTORS 1 4W 100 CARBON FILM RESISTORS 1 4W 620 CARBON FILM RESISTORS 1 4W 130 Q CARBON
12. 310mm JUMPER WIRE 0 7 52mm P 5mm JUMPER WIRE 0 7 52mm P 6mm JUMPER WIRE 0 7 52mm P 7 5mm JUMPER WIRE 0 7 52mm P 10mm JUMPER WIRE 0 7 52mm P 12 5mm JUMPER WIRE 0 7 52mm P 15mm JUMPER WIRE 0 7 52mm P 20mm PIN CONNECTOR CABLE TIES CV 100 Page 13 O1 PART QUANTITY NAME 012 031 021 465 031 048 022 861 041 448 041 449 151 131 003 111 003 612 003 748 047 496 049 206 153 217 196 129 255 202 157 998 156 089 099 232 099 233 099 234 099 238 095 057 099 167 099 169 099 014 099 214 190 062 160 044 160 052 160 009 121 007A 110 138 111 046A 110 187A lt n9 I N N X 3 PANEL CONTROL MAIN CHASSIS TOP COVER MOUNTING BRACKET HEAT SINK HEAT SINK D AIR GUIDE KNOB ROTARY SMALL SNAP RIVET LED HOUSING PCB SUPPORT PAD FOOT POLYFORM SERIAL NO LABEL GIFT BOX OWNER S MANUAL WARRANTY CARD LABEL GREEN LABEL RED LABEL YELLOW UK LABEL VDE LABEL ALABEL V LABEL LABEL MADE IN TAIWAN LABEL MADE IN CHINA SILICON GEL PE BAG 160x250mm PE BAG 650x650mm BAG 23x30cm BAND HEAD TAPPING SCREW BTB 3 3x6 AB BAND HEAD TAPPING SCREW 815 2 3x8 B BAND HEAD TAPPING SCREW BTS 33x6 AB BAND HEAD TAPPING SCREW TWIN SCREW 3x12 AB 102 161 102 162 102 111 131 081 107 022 131 074 142 008 143 008 170 365 262 328 262 329 074 163 076 002 076 003 076 020 076 023 170 365 076 117 076 118
13. CARBON FILM RESISTORS 1 4W 1300 060 253 CARBON FILM RESISTORS 1 4W 3000 060 259 CARBON FILM RESISTORS 1 4W 5100 060 279 CARBON FILM RESISTORS 1 4W 2 2KQ 060 289 CARBON FILM RESISTORS 1 4W 5 6KQ 060 300 CARBON FILM RESISTORS 1 4W 16KQ 060 306 CARBON FILM RESISTORS 1 4W 30KQ 060 315 CARBON FILM RESISTORS 1 4W 68KQ ELECTROLYTIC CAPACITORS 050 153 2 ELECTROLYTIC CAPACITORS 10u 50V 050 197 ELECTROLYTIC CAPACITORS 100u 10V 050 049 ELECTROLYTIC CAPACITORS 100u 16V 050 058 ELECTROLYTIC CAPACITORS 220u 16V 050 120 ELECTROLYTIC CAPACITORS 220u 25V 050 154 ELECTROLYTIC CAPACITORS 6800u 63V CERAMIC CAPACITORS 051 148 2 CERAMIC CAPACITOR 0 01u 500V 051 018 4 CERAMIC CAPACITOR 22P 50V 051 024 CERAMIC CAPACITOR 39 P 50V 051 034 CERAMIC CAPACITOR 100P 50V 051 156 CERAMIC CAPACITOR UL 0 0047 400V 054 013 054 022 054 026 054 030 054 071 092 030 093 416 093 384 209 004 202 110 060 703 060 703 060 703 060 703 060 703 060 703 060 703 146 509 003 605 POLYESTER CERAMIC CAPACITOR 0 01u 50V POLYESTER CERAMIC CAPACITOR 0 047u 50V POLYESTER CERAMIC CAPACITOR 0 1u 50V POLYESTER CERAMIC CAPACITOR 0 22u 50V POLYESTER CERAMIC CAPACITOR 0 1Ww250V 2P P 2 5mm CONNECTOR BASE B2B XH A GROUND WIRE WITH RING TONGUE GRN YLW 150mm GROUND WIRE WITH RING TONGUE BLACK 210mm LEAD WIRE WHITE UL1015418AWG 6x6 310mm LEAD WIRE RED UL1015418AWG 6x6
14. Products Corp It is recommended that all maintenance and service on this product is performed by Gemini Sound Products Corp or its authorized agents Gemini Sound Products Corp will not accept liability for loss or damage caused by maintenance or repair performed by unauthorized personnel Worldwide Headquarters lt 120 Clover Place Edison NJ 08818 USA Tel 732 738 9003 Fax 732 738 9006 France G S L France 11 Avenue Leon Harmel Z I Antony 92160 Antony France Tel 33 0 1 55 59 04 70 Fax 33 0 1 55 59 04 80 Germany Gemini Sound Products GmbH Ottostrasse 6 85757 Karlsfeld Germany Tel 08131 39171 0 Fax 08131 39171 9 UK Gemini Sound Products Unit C4 Hazleton Industrial Estate Waterlooville UK P08 9JU Tel 087 087 00880 Fax 087 087 00990 Spain Gemini Sound Products S A Mino 112 Nave 1 08223 Terrassa Barcelona Spain Tel 011 34 93 736 34 00 Fax 011 34 93 736 34 01 Gemini Sound Products Corp 2001 AI Rights Reserved Page 24
15. SET SOUND IS PRESENT BUT VOLUME IS TOO LOW EVEN THOUGH SOURCE DEVICE IS SET TO A HIGH LEVEL AMPLIFIER INPUT LEVEL CONTROLS ARE SET TOO LOW WRONG PIN CONNECTIONS IN CABLES ADJUST LEVEL CONTROLS AS PER INSTRUCTIONS USE CORRECT CABLES AS SHOWN ON BACK OF UNIT LOUD 50 60 HZ OR 100 120 HZ HUM IS HEARD AT ALL TIMES THROUGH THE SPEAKER SYSTEMS IMPROPER OR DEFECTIVE GROUND CONNECTION INPUTS IMPROPER OR DEFECTIVE GROUND AT INPUT SOURCE DEVICE S IMPROPER OR DEFECTIVE GROUND CONNECTION ON AC OUTLET GROUND LOOP THROUGH AC LINE CONNECTION RACK MOUNTING CHECK FOR PROPER AC LINE GROUND ON POWER AMP AND ALL INPUT DEVICES CHECK INPUT CABLES FOR ALL SOURCE DEVICES AND SIGNAL PROCESSING AS WELL AS INPUT CABLES TO POWER AMPLIFIER CHECK POSITION OF GROUND LIFT SWITCH AS PER INSTRUCTIONS FOR LIFTING THE GROUND NEVER LIFT THE AC LINE GROUND ON THE POWER AMPLIFIER IF YOU ARE NOT TOTALLY FAMILIAR WITH GROUND LIFTING OR UNIFICATION PROCEDURES DO NOT ATTEMPT THEM WITHOUT FIRST CONSULTING YOUR DEALER OR A QUALIFIED SOUND TECHNICIAN FOR MORE INFORMATION ON GROUNDING IMPROPERLY DONE SUCH PROCEDURES CAN POSE A SAFETY AND OR FIRE HAZARD SOUND IS DISTORTED DISTORTION OCCURRING IN SOURCE DEVICE INPUT LEVEL IS SET TOO HIGH CHECK CLIP INDICATORS ON INPUT SOURCE DEVICES AND RESET LEVELS IF NECESSARY TO ELIMINATE DISTORTION ADJUST LEVEL CONTROLS AS PER INSTRUCTIONS PROTECT LE
16. by using an adapter or extension cord without a 3 prong plug 8 DONOT USE ANY SPRAY CLEANER OR LUBRICANT ON ANY CONTROLS OR SWITCHES CONNECTION CONTROLS AND INDICATORS Rear panel Input Section 1 4 Phone Input Jacks 1 2 accept a balanced as well as an unbalanced line level signal The unbalanced line uses a standard tip sleeve connection The tip is positive and the sleeve is negative or ground The balanced line uses a tip ring sleeve connection Tip is hot or positive ring is cold or negative and sleeve is shield or ground Operation Mode Switch 3 switch is used to set the unit for Stereo mode Parallel Mono mode or Mono Bridge mode AC Power Section Fuse 8 replace fuse with those of proper type and rating Ground Lift Switch 4 is used to lift the ground from the chassis see the Ground Lift Switch Instructions for more detail AC Inlet 16 is used to attach the power cord to the unit AC line voltage switch 17 allows reconfiguring amplifier for either 110 120V or 220 240V AC lines Output Section Disconnect unit from the AC power source before making any connections Pay close attention to polarity shown on the back of the unit when connecting your speakers Connecting your speaker Systems using the wrong polarity will not damage your speakers but will impact the quality of the sound lack of bass and incorrect stereo image Speaker Outputs 5 6 7 the speaker output connectors a
17. 0 R SILICON TRANSISTOR MPSA13 BRIDGE RECTIFIER KBPC1004W RELAY SRET 202DP RECTIFIER DIODE 1N4004 SILICON DIODE 1N4148 ZENER DIODE 1 2W 12V RD12EB HZ12B2 ZENER DIODE 1 2W 5 6V RD5 6EB2 ZENER DIODE 1 2 W 3 3V ZENER DIODE 1 2W 22V RD22EB2 MTZ22B LED RED 56 LED YELLOW 5 LED GREEN 5 ROTARY VR 10KA L 15MM SLIDE SWITCH 2P2C UL SLIDE SWITCH SLIDE SWITCH POWER SWITCH 001 613 092 078 092 105 100 056 100 071 100 068 161 172 161 109 059 233 147 024 093 370 093 371 093 410 093 369 073 506 063 005 062 024 DC FAN 24V 80x80x25mm 6 36PHONE JACK AC INLET IEC SOCKET FUSE FUSE 20mm UL 8A AC250V FUSE 20mm VBS UTE 6 3A 250V FUSE 20mm VBS UTE 3 15A 250V 4P SPEAKER TERMINAL FUSE CLIP JH 6 POWER TRANSFORMER EI 86x80 COIL 1 3uH 1 0 9 9 1 2T AC CORD SVT AWG 18x3C VW 1 UL AC 6080 220V VDE AC CORD ARGENTINA AC CORD 230V BS METAL FILM RESISTORS 1 8W 10KQ 2 THERMISTOR PTH9M04BE222TS2F333 WIRE WOUND RESISTOR CERAMIC 3W 0 220 METAL FILM RESISTORS 061 102 061 030 061 031 061 111 061 108 061 106 2 METAL FILM RESISTORS 2W 8 20 METAL FILM RESISTORS 2W 2 2KQ METAL FILM RESISTORS 1W 10KQ METAL FILM RESISTORS 1 4W 69 8KQ 1 METAL FILM RESISTORS 1 4W 1MQ 1 METAL FILM RESISTORS 1 4W 2 21KQ 1 Page 12 CARBON FILM RESISTORS 060 218 4 CARBON FILM RESISTORS 1 4W 100 060 237 CARBON FILM RESISTORS 1 4W 620 060 245
18. 0 7 52mm P 10mm JUMPER WIRE 0 7 52mm P 12 5mm JUMPER WIRE 0 7 52mm P 15mm JUMPER WIRE 0 7 52mm P 20mm PIN CONNECTOR HEAT SHRINK TUBING UL 280 35mm HEAT SHRINK TUBING UL 350 35mm TUBE 1 30mm CABLE TIES CV 100 NOO Q N Page 10 PART QUANTITY NAME 012 030 021 464 031 048 022 861 041 447 041 449 151 131 003 111 003 612 003 748 047 496 049 206 153 217 196 128 255 201 157 997 156 089 099 232 099 233 099 234 099 238 095 057 099 167 099 169 099 014 099 214 190 062 160 044 160 052 160 009 121 007A 110 138 111 046A 110 187A lt n9 Im N X 2 PANEL CONTROL MAIN CHASSIS TOP COVER MOUNTING BRACKET HEAT SINK HEAT SINK D AIR GUIDE KNOB ROTARY SMALL SNAP RIVET LED HOUSING PCB SUPPORT PAD FOOT POLYFORM SERIAL NO LABEL GIFT BOX OWNER S MANUAL WARRANTY CARD LABEL GREEN LABEL RED LABEL YELLOW UK LABEL VDE LABEL ALABEL V LABEL LABEL MADE IN TAIWAN LABEL MADE IN CHINA SILICON GEL PE BAG 160x250mm PE BAG 650x650mm PE BAG 23x30cm BAND HEAD TAPPING SCREW 3 3x6 AB BAND HEAD TAPPING SCREW 8 2 3x8 B BAND HEAD TAPPING SCREW 815 3 3x6 AB BAND HEAD TAPPING SCREW TWIN SCREW 3x12 AB 111 044 111 060 102 161 102 162 102 111 131 081 107 022 131 074 142 008 143 008 170 364 262 328 262 329 ICs 074 163 TRANSISTORS 076 002 6 076 003 076 020 076 023 076 099
19. 080 086 071 220 081 023 081 030 081 041 083 099 001 613 092 078 LED RED 5 LED YELLOW 5 LED GREEN 5 ROTARY VR 10KA L 15MM SLIDE SWITCH 2P2C UL SLIDE SWITCH SLIDE SWITCH POWER SWITCH DC FAN 24V 80x80x25mm 061 112 061 108 061 106 060 218 060 237 060 245 060 253 060 259 060 279 060 289 060 300 060 306 060 315 050 153 050 197 050 049 050 120 050 058 050 200 051 148 100 051 018 101 051 024 Page 15 METAL FILM RESISTORS 1 4W 86 6 1 METAL FILM RESISTORS 1 4W 114 1 METAL FILM RESISTORS 1 AW 2 21KQ 1 CARBON FILM RESISTORS 1 4W 100 CARBON FILM RESISTORS 1 4W 620 CARBON FILM RESISTORS 1 4W 1300 CARBON FILM RESISTORS 1 4W 3000 CARBON FILM RESISTORS 1 4W 510 CARBON FILM RESISTORS 1 4W 2 2KQ CARBON FILM RESISTORS 1 4W 5 6KQ CARBON FILM RESISTORS 1 4W 16KQ CARBON FILM RESISTORS 1 4W 30KQ CARBON FILM RESISTORS 1 4W 68KQ ELECTROLYTIC CAPACITORS N P 10u 50V ELECTROLYTIC CAPACITORS N P 100u 10V ELECTROLYTIC CAPACITORS 100u 16V ELECTROLYTIC CAPACITORS 220u 25V ELECTROLYTIC CAPACITORS 220u 16V ELECTROLYTIC CAPACITORS 6800u 80V CERAMIC CAPACITOR 0 01u 500V CERAMIC CAPACITOR 22P 50V CERAMIC CAPACITOR 39 50V 051 034 051 156 054 013 054 022 054 026 054 030 054 071 092 030 093 416 093 384 209 004 202 110 060 703 060 703 060 703 060 703 060 703 060 703 060
20. 703 146 509 CERAMIC CAPACITOR 100P 50V CERAMIC CAPACITOR UL 0 0047 U400V POLYESTER CERAMIC CAPACITOR 0 01u 50V POLYESTER CERAMIC CAPACITOR 0 047u 50V POLYESTER CERAMIC CAPACITOR 0 1u 50V POLYESTER CERAMIC CAPACITOR 0 22u 50V POLYESTER CERAMIC CAPACITOR 0 1w250V 2P P 2 5mm CONNECTOR BASE B2B XH A GROUND WIRE WITH RING TONGUE GRN YLW 150mm GROUND WIRE WITH RING TONGUE BLACK 210mm LEAD WIRE WHITE UL1015418AWG 6x6 310mm LEAD WIRE RED UL1015418AWG 6x6 310mm JUMPER WIRE 0 7 52mm P 5mm JUMPER WIRE 0 7 52mm P 6mm JUMPER WIRE 0 7 52mm P 7 5mm JUMPER WIRE 0 7 52mm P 10mm JUMPER WIRE 0 7 52mm P 12 5mm JUMPER WIRE 0 7 52mm P 15mm JUMPER WIRE 0 7 52mm P 20mm PIN CONNECTOR 127 128 129 130 131 132 190 075 190 230 190 063 003 605 PART QUANTITY HEAT SHRINK TUBING UL 280 35mm HEAT SHRINK TUBING UL 350 35mm TUBE 10 30mm CABLE TIES CV 100 NAME NOO RO N Page 16 012 034 021 466 031 048 022 863 022 031 041 448 041 449 151 131 003 111 003 612 003 748 047 496 049 206 153 217 196 133 255 206 257 003 156 089 099 232 099 233 099 234 099 238 095 057 099 167 099 169 099 014 099 214 190 062 160 044 160 052 160 009 4 N ND RW BD P lt WP N N X 4 PANEL CONTROL MAIN CHASSIS TOP COVER MOUNTING BRACKET VU METER BRACKET HEAT SINK HEAT SINK D AIR GUIDE KNOB ROTARY SMALL SNAP RIV
21. D REMAINS LIT OR GOES ON AND OFF INTERMITTENTLY AFTER USING AMPLIFIER FOR A SHORT TIME UNIT IS OPERATING AT EXCESSIVELY HIGH TEMPERATURE EXTREMELY LOW SPEAKER IMPEDANCE SHORT IN SPEAKER CONNECTORS SPEAKER CABLE OR SPEAKER SYSTEM CHECK THAT AMPLIFIER IS ADEQUATELY VENTILATED ON THE FRONT AND REAR PANELS WHERE THE AIR VENTS AND FANS ARE LOCATED IF OVERHEATED LET THE AMPLIFIER COOL DOWN BEFORE APPLYING AN INPUT SIGNAL CHECK THE POSITION OF OPERATION MODE SWITCH BE SURE THAT THE SPEAKER CONNECTIONS ARE MADE IN ACCORDANCE WITH THE SWITCH SETTING VERIFY SPEAKER SYSTEM IMPEDANCES BE SURE THE TOTAL SPEAKER SYSTEM IMPEDANCE IS AT LEAST 4 OHMS PER CHANNEL WHEN THE OPERATION MODE SWITCH IS IN THE STEREO POSITION OR PARALLEL MONO POSITION IF THE SWITCH IS IN THE BRIDGE MODE THE IMPEDANCE MUST BE AT LEAST 8 OHMS IF YOU ARE NOT SURE OF YOUR TOTAL SPEAKER IMPEDANCE LOAD CONTACT YOUR DEALER FOR MORE INFORMATION CHECK CONDITION OF SPEAKER CABLES IF USING BARE WIRE CONNECTIONS ON THE OUTPUTS OF THE AMPLIFIER BE SURE THAT NO STRANDS FROM ONE CONNECTOR ARE TOUCHING ANY OTHER CONNECTOR FUSE BLOWS INTERMITTENTLY SPEAKER LOAD IMPEDANCE IS TOO LOW TYPE OR RATING OF THE FUSE IS NOT CORRECT CHECK FOR SHORTS ON THE OUTPUTS CHECK YOUR SPEAKER IMPEDANCE INFO FROM DEALER CHECK THAT THE FUSE TYPE AND RATING IS CORRECT PROTECT LED STAYS ON WITH NO SPEAKERS CONNECTED AND WITH THE AMPLIFIER COOL
22. ED DOWN FAILED AMPLIFIER 6 CONTACT THE GEMINI SERVICE DEPARTMENT OR YOUR AUTHORIZED DEALER TO SPEAK TO A QUALIFIED SERVICE TECHNICIAN IN THE U S A CALL TOLL FREE 1 800 476 8633 0 N A A c O SOO RO NP PART QUANTITY PARTS LIST NAME 012 029 021 463 031 048 022 861 041 446 041 449 151 131 003 111 003 612 003 748 047 496 049 206 153 217 196 127 255 200 157 996 156 089 099 232 099 233 099 234 099 238 095 057 099 167 099 169 099 014 099 214 190 062 160 044 160 052 160 009 DP N 1 PANEL CONTROL MAIN CHASSIS TOP COVER MOUNTING BRACKET HEAT SINK HEAT SINK D AIR GUIDE KNOB ROTARY SMALL SNAP RIVET LED HOUSING PCB SUPPORT PAD FOOT POLYFORM SERIAL NO LABEL GIFT BOX OWNER S MANUAL WARRANTY CARD LABEL GREEN LABEL RED LABEL YELLOW UK LABEL VDE LABEL ALABEL VLABEL LABEL MADE IN TAIWAN LABEL MADE IN CHINA SILICON GEL PE BAG 160x250mm PE BAG 650x650mm PE BAG 23x30cm Page 7 121 007A 110 138 111 046A 110 187A 111 044A 111 060 102 161 102 162 102 111 131 081 107 022A 131 074 142 008 143 008 170 363 262 328 262 329 074 163 BAND HEAD TAPPING SCREW BTB 3 3x6 AB BAND HEAD TAPPING SCREW 5 2 3x8 B BAND HEAD TAPPING SCREW BTS 3 3x6 AB BAND HEAD TAPPING SCREW TWIN SCREW 3x12 AB BAND HEAD TAPPING SCREW NUT BTS 3 3
23. ET LED HOUSING PCB SUPPORT PAD FOOT POLYFORM SERIAL NO LABEL GIFT BOX OWNER S MANUAL WARRANTY CARD LABEL GREEN LABEL RED LABEL YELLOW UK LABEL VDELABEL A LABEL V LABEL LABEL MADE IN TAIWAN LABEL MADE IN CHINA SILICON GEL PE BAG 160x250mm PE BAG 650x650mm PE BAG 23x30cm 121 007 110 138 111 046 110 187 111 044 111 060 102 161 102 162 102 111 131 081 107 022 131 074 142 008 143 008 170 360 262 328 262 329 074 163 076 075 076 077 076 002 076 003 BAND HEAD TAPPING SCREW BTB 3 3x6 AB BAND HEAD TAPPING SCREW BTS 23x8 B BAND HEAD TAPPING SCREW BTS 3 3x6 AB BAND HEAD TAPPING SCREW TWIN SCREW 3x12 AB BAND HEAD TAPPING SCREW NUT BTS 3 3x10 AB PAN HEAD TAPPING SCREW PTS 3 4x8 N PAN HEAD MACHINE SCREW 3 12 PAN HEAD MACHINE SCREW 4x18 Y PAN HEAD MACHINE SCREW PMS 5x8 B NUT WASHER36 B BAND HEAD MACHINE SCREW 4 15 NUT KNUT 4 B PLAIN WASHER44 Y SPRING WASHER4 Y MASTER CARTON PRINTED CIRCUIT BOARD X4 1 PRINTED CIRCUIT BOARD X4 2 INTEGRATED CIRCUIT NJM4558DD INTEGRATED CIRCUIT OR BA15218 INTEGRATED CIRCUIT OR 5218A SILICON TRANSISTORS 2SA1358 SILICON TRANSISTORS OR 2SB631 SILICON TRANSISTORS 2SC945 Q P SILICON TRANSISTORS OR 2SC1815 Y GR Page 17 076 020 076 023 076 117 076 118 076 099 076 073 076 100 076 072 076 101 076 034 076 102 076 037
24. FILM RESISTORS 1 4W 3000 CARBON FILM RESISTORS 1 4W 510 CARBON FILM RESISTORS 1 4W 2 2KQ CARBON FILM RESISTORS 1 4W 5 6KQ CARBON FILM RESISTORS 1 4W 16KQ CARBON FILM RESISTORS 1 4W 30KQ CARBON FILM RESISTORS 1 4W 68KQ ELECTROLYTIC CAPACITORS N P 10u 50V ELECTROLYTIC CAPACITORS 100u 10V ELECTROLYTIC CAPACITORS 100u 16V Page9 050 058 050 120 050 198 051 148 051 018 051 024 051 034 051 156 054 013 054 022 054 026 054 030 054 071 092 030 093 416 093 384 209 004 202 110 ELECTROLYTIC CAPACITORS 220u 16V ELECTROLYTIC CAPACITORS 220u 25V ELECTROLYTIC CAPACITORS 6800u 50V CERAMIC CAPACITOR 0 01 500 CERAMIC CAPACITOR 22P 50V CERAMIC CAPACITOR 39 P 50V CERAMIC CAPACITOR 100P 50V CERAMIC CAPACITOR UL 0 0047u 400V POLYESTER CERAMIC CAPACITOR 0 01u 50V POLYESTER CERAMIC CAPACITOR 0 047u 50V POLYESTER CERAMIC CAPACITOR 0 1u 50V POLYESTER CERAMIC CAPACITOR 0 22u 50V POLYESTER CERAMIC CAPACITOR 0 1Ww250V 12P P 2 5mm CONNECTOR BASE B2B XH A GROUND WIRE WITH RING TONGUE GRN YLW 150mm GROUND WIRE WITH RING TONGUE BLACK 210mm LEAD WIRE WHITE UL1015418AWG 6x6 310mm LEAD WIRE RED UL1015418AWG 6x6 310mm 060 703 060 703 060 703 060 703 060 703 060 703 060 703 146 509 190 075 190 230 190 063 003 605 JUMPER WIRE 0 7 52mm P 5mm JUMPER WIRE 0 7 52mm P 6mm JUMPER WIRE 0 7 52mm P 7 5mm JUMPER WIRE
25. S UTE 5 250V 230V 4P SPEAKER TERMINAL FUSE CLIP JH 6 POWER TRANSFORMER 86x95 COIL 1 3uH 1 0 9 9 1 2T AC CORD SVT AWG 18x3C VW 1 UL AC CORD 220V VDE AC CORD ARGENTINA AC CORD 230V BS METAL FILM RESISTORS 1 8W 10 2 THERMISTOR PTH9M04BE222TS2F333 WIRE WOUND RESISTOR CERAMIC 3W 0 220 METAL FILM RESISTORS 3W 4700 METAL FILM RESISTORS 3W 1000 METAL FILM RESISTORS 2W 8 20 METAL FILM RESISTORS 2W 2 7KQ METAL FILM RESISTORS 1W 10KQ Page 18 061 112 061 108 061 106 060 218 060 237 060 245 060 248 060 253 060 259 060 263 060 279 060 287 060 289 060 300 060 306 060 315 050 153 050 197 050 036 050 049 050 120 050 058 METAL FILM RESISTORS 1 4W 86 6 1 METAL FILM RESISTORS 1 4W 1MQ 1 METAL FILM RESISTORS 1 4W 2 21KQ 1 CARBON FILM RESISTORS 1 4W 100 CARBON FILM RESISTORS 1 4W 62Q CARBON FILM RESISTORS 1 4W 1300 CARBON FILM RESISTORS 1 4W 180 Q CARBON FILM RESISTORS 1 4W 3000 CARBON FILM RESISTORS 1 4W 510 CARBON FILM RESISTORS 1 4W 750 CARBON FILM RESISTORS 1 4W 2 2KQ CARBON FILM RESISTORS 1 4W 4 7KQ CARBON FILM RESISTORS 1 4W 5 6KQ CARBON FILM RESISTORS 1 4W 16KQ CARBON FILM RESISTORS 1 4W 30KQ CARBON FILM RESISTORS 1 4W 68KQ ELECTROLYTIC CAPACITORS N P 10u 50V ELECTROLYTIC CAPACITORS N P 100u 10V ELECTROLYTIC CAPACITORS 22u 25V ELECTROLYTIC CAPACITORS 100u 16V ELECTROLYTIC CAPACITORS 220u 25V
26. nni j 9 1 de s w o d wa 39001 MTT N m m as siu ES E Dru MX Yeu maan lt Zy M RZK oH 41 JI ii 7 wn p 29 o 1 SI8LOSZ mm No p oi Ho L K s wo w mm Z 244 m T T SZ ug 2 120 be ce ES I E w 2 mns ir auiem o T 00099 yaen mai rou sni va E E m 40001 vau 2 1 ys x Vi pu 902 y X X E D 3 ji SN mum mo In the USA If you experience problems with this unit call 1 732 738 9003 for Gemini Customer Service Do not attempt to return this equipment to your dealer Parts of the design of this product may be protected by worldwide patents Information in this manual is subject to change without notice and does not represent a commitment on the part of the vendor Gemini Sound Products Corp shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual No part of this manual may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic electrical mechanical optical chemical including photocopying and recording for any purpose without the express written permission of Gemini Sound
27. oise floor as possible ensuring an excellent performance and signal to noise ratio Adjust the LEVEL CONTROL 15 for channel 1 to achieve the desired maximum listening level Note when the clip LEDs light there is distortion present in the amplifier s output section If a clip LED remains on or flashes repeatedly reduce the signal level by lowering the input level control for channel 1 or reduce the level at the source During Mono Bridge operation the channel 2 level is inactive however both channels LEDs will flash simultaneously and show output conditions Using the Ground Lift Switch Depending on your system configuration sometimes applying the ground will create a quieter signal path Sometimes lifting the ground can eliminate ground loops and hum to create a quieter signal path 1 With the power amp on listen to the system in idle mode no signal present with the ground applied the GROUND LIFT SWITCH 4 in the left position 2 Turn the power off before moving the GROUND LIFT SWITCH 4 Lift the ground by moving the GROUND LIFT SWITCH to the right turn the power back on and listen to determine which position will provide a signal free of background noise and hum Keep the GROUND LIFT SWITCH in the ground position if the noise level remains the same in either position CAUTION DO NOT TERMINATE THE AC GROUND ON THE POWER AMPLIFIER IN ANY WAY TERMINATION OF THE AC GROUND CAN BE HAZARDOUS Page4 SPECIFICATIONS
28. ol for the channel that is clipping or reduce the level at the source Mono Bridge Operation Follow these instructions to bridge the unit s output Bridging the amplifier converts the unit to a monophonic or single channel amplifier The amplifier can be used with 8 Ohm or higher loads only in Mono Bridge mode This mode is used to provide a higher voltage with greater headroom to your speaker Before setting your amplifier for Mono Bridge operation make sure that your speaker can handle the high power level provided by the amplifier in Mono Bridge mode CAUTION VOLTAGE OVER 100 VOLTS MAY BE PRODUCED AT THE BRIDGE OUTPUT TERMINALS IN THIS MODE 1 With the power off set the OPERATION MODE SWITCH 3 to the BRIDGE position 2 With the power off connect your input cables to channel 1 input only using the 1 4 INPUT JACK 1 of channel 1 3 Connect the loudspeaker to the BRIDGE SPEAKER OUTPUT 6 only Be sure the polarity of your connection is correct The total speaker load must be at least 8 Ohms or above If you try to operate at less than 8 Ohms in the Mono Bridge mode the amplifier will go into the protection mode and stop operation until you correct the load conditions 4 With the CHANNEL 1 LEVEL CONTROL 15 set to zero fully counterclockwise switch the power on Apply a signal to the input The level of the input signal should be as high as you will ever need it to be This way it will be as high above the amplifier s n
29. or reduce the level at the source Parallel Mono Operation Follow these instructions for Parallel Mono Operation using a single input cable and you will have the same monophonic signal on both the channel 1 and the channel 2 outputs Each channel s output is controlled independently by that channel s level control 1 With the power off set the OPERATION MODE SWITCH 3 to the PARALLEL Mono position 2 With the power off connect your input cables to the channel 1 input only using the 1 4 INPUT JACK 1 of channel 1 3 Connect the loudspeakers to the channel 1 and channel 2 SPEAKER OUTPUTS 5 7 THE TOTAL SPEAKER LOAD MUST BE AT LEAST 4 OHMS PER CHANNEL If you try to operate at less than 4 Ohms per channel the amplifier will go into the protection mode and stop operation until you correct the load conditions 4 With the LEVEL CONTROLS 12 15 set to zero fully counterclockwise switch the power on Apply a signal to the input The level of the input signal should be as high as you will ever need it to be This way it will be as high above the amplifier s noise floor as possible ensuring an excellent performance and signal to noise ratio Adjust the LEVEL CONTROLS for each channel to achieve the desired maximum listening level Note when the clip LEDs light there is distortion present in the amplifier s output section If a clip LED remains on or flashes repeatedly reduce the signal level by lowering the input level contr
30. re 3 way binding posts that will accept a standard banana plug spade lugs or bare wire Make sure that all the connections are clean when using bare wire connections If any strands of wire from one connector touch the adjacent connector the sound will distort and your amplifier will overheat and go into protection mode NOTE Total speaker impedance must not be lower than 4 Ohm per channel for Stereo and Parallel Mono modes and 8 Ohm for Mono Bridge mode Front Panel Power Switch 9 turns the unit on and off Power LED 10 the power LED lights when the power is on If the power LED does not light refer to the troubleshooting guide Signal LED 13 the signal LEDs for each channel show when a signal is present In Mono Bridge mode both the channel 1 LED and the channel 2 LED will light in unison Clip LED 14 the amplifier has true clip LEDs to help you properly control the amplifier s output and achieve undistorted sound The clip LEDs for each channel light when your signal level is so strong that the distortion occurs The clip LED should not remain constantly on or flash repeatedly during operation For clean sound reproduction the clip LED should only light occasionally for an instant If the LED remains on or flashes repeatedly you will hear distorted sound that can be damaging to your speaker systems If this occurs reduce the signal level by lowering the input level control for the channel that is clipping or red
31. rusion heatsink design with directly mounted output transistors for no fault operation Efficient air guide with front to rear airflow for thermal stability and reliability Compact 2U well balanced enclosure 3U for X4 model Steel reinforced chassis construction for durability and longevity WORDS TO THE WISE 1 Read all operating instructions before using this equipment 2 To reduce the risk of electrical shock do not open the unit There are NO USER REPLACEABLE PARTS INSIDE Please contact the Gemini Service Department or your authorized dealer to speak to a qualified Gemini Sound Products technician 3 Be sure to allow adequate front and rear ventilation to avoid possible heat damage to your equipment 4 Be sure that AC power is OFF and all level controls are set to MINIMUM before making connections This will eliminate any chance of unexpected loud audio transients that could damage your speaker systems In the USA If you experience problems with this unit please call 1 732 738 9003 for Gemini Customer Service Do not attempt to return this equipment to your dealer 5 Be sure that AC power is OFF when changing modes of operation and when changing the position of the ground lift switch 6 DONOT EXPOSE THIS UNIT TO RAIN OR MOISTURE Operators of electronic equipment should in no way be in contact with water 7 When connecting to AC power line be sure you haven t lost the ground connection
32. uce the level at the source If the clip LED lights when no signal is present it may indicate an RF signal on the output which may cause damage to speakers the RF signal will not be audible Please note that when you are using the amplifier in the Mono Bridge mode both clip LEDs of the bridged channels will operate simultaneously Protect LED 11 when you first turn on the amplifier the protect LEDs light briefly during a turn on delay which indicates that the outputs are disconnected internally There will be an audible click when the outputs reconnect and the protect LED will turn off Otherwise the protect LED indicates that there is a problem either in the amplifier s external connections load or temperature conditions or its internal 3 functions If one of these situations occurs the amplifier senses the problem and automatically switches into protection mode The LED will light to warn you of the trouble and the amplifier will stop working If this occurs switch off the amplifier and refer to the Troubleshooting Guide If the protect LED remains lit when resuming amplifier operation do not use the amplifier and contact an authorized service technician Level Controls 12 15 establish the input levels required for each channel Only the Channel 1 Level Control 15 works in Mono Bridge mode OPERATION THE AMPLIFIER S POWER MUST BE TURNED OFF WHEN CHANGING MODES OF OPERATION Stereo Operation The unit has t
33. wo channels for stereo operation Each channel provides a separate and discrete signal at the speaker outputs according to the signal received at the inputs The following instructions are for applications with 4 Ohm or 8 Ohm speakers of matched power ratings 1 With the power off set the OPERATION MODE SWITCH 3 to the STEREO position 2 With the power off connect your input cables to the channel 1 and 2 inputs using the 1 4 INPUT JACKS 1 2 of each channel 3 Connect the loudspeakers to the channel 1 and channel 2 SPEAKER OUTPUTS 5 7 THE TOTAL SPEAKER LOAD MUST BE AT LEAST 4 OHMS PER CHANNEL If you try to operate at a lower impedance the amplifier will go into protection mode and stop operation until you correct the load conditions 4 With the LEVEL CONTROLS 12 15 of both channels set to zero fully counterclockwise turn the POWER SWITCH 9 on Apply a signal to the input of the amplifier The level of the input signal should be as high as you will ever need it to be This way it will be as high above the amplifiers noise floor as possible ensuring an excellent performance and signal to noise ratio Adjust the LEVEL CONTROLS for each channel to achieve the desired maximum listening level Note when the clip LEDs light there is distortion present in the amplifier s output section If a clip LED remains on or flashes repeatedly reduce the signal level by lowering the input level control for the channel that is clipping
34. x10 AB PAN HEAD TAPPING SCREW PTS 3 4x8 N PAN HEAD MACHINE SCREW 3x12 Y PAN HEAD MACHINE SCREW 4x18 Y PAN HEAD MACHINE SCREW PMS 5x8 B NUT WASHER30 B BAND HEAD MACHINE SCREW M4x15 AB NUT KNUT 49 B PLAIN WASHER46 Y SPRING WASHER46 Y MASTER CARTON PRINTED CIRCUIT BOARD X4 1 PRINTED CIRCUIT BOARD X4 2 INTEGRATED CIRCUIT JM4558DD INTEGRATED CIRCUIT OR BA15218 INTEGRATED CIRCUIT OR 5218A 076 002 076 003 076 020 076 023 076 117 076 118 076 099 076 073 076 100 076 072 076 101 076 034 076 102 076 037 076 134 086 019 086 512 SILICON TRANSISTORS 2SC945 Q P SILICON TRANSISTORS OR 2SC1815 Y GR SILICON TRANSISTORS 2SA733 Q P SILICON TRANSISTORS OR 28A1015 GR Y SILICON TRANSISTOR 2541943 0 OR R SILICON TRANSISTOR OR 2SA1429 0 OR R SILICON TRANSISTOR 2505200 0 OR R SILICON TRANSISTOR OR 2502155 0 OR R SILICON TRANSISTOR 2SA1837 SILICON TRANSISTOR OR 2SA1306 SILICON TRANSISTOR 2504793 SILICON TRANSISTOR OR 2SC3298 Y SILICON TRANSISTOR 2SA1145 Y OR R SILICON TRANSISTOR OR 2SA949 Y OR R SILICON TRANSISTOR 2SC2705 Y OR SILICON TRANSISTOR OR 2502229 OR O SILICON TRANSISTOR MPSA13 BRIDGE RECTIFIER KBPC804W RELAY SRET 202DP Page8 079 034 079 003 079 012 079 019 079 056 079 037 080 085 080 110 080 086 071 220 081 023 081 030 081 041 083 099 001 613 092 078 092 105 100
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