SERVICE MANUAL
Contents
1. 48AWG BLACK Page 9 MAIN PCB lt 1 1 10814 NUT R11 R9 lt 6 BAK Mh 13K 1 CHA OUTPUT 2 lt 2 C TOuF2SV NP 06 10 10pF 2 HN 3 lt 3 CHA L INPUT NA E lI 5 7 C4 C3 2 ps SUB OUTPUT i gt lt 4 R6 KS RIL 287K 1 100F2SV NP QUTFS OTUF5 1 J 9 CH2 RJNFUT IF T i E QUA VR2 NJM4558DD s ss RA RI A lt 2 n UE T Km 02 TONAN 1K 1 VOLUME 392K 1 RA ou lt 1 tay CONTROL gt 1 2 ems e SUBWOOFER aws 1 95 CHA L T E sepa m ON n 12 13K 1 OUTPUT RB 5 1K RIS 13K 1 AM OUTPUT 39 2K 1 RIO 8R21W R3 13K 1 1455800 is ae 4 om i El xli 4 an a x 604K 1 c 10 6 L2 Hun SF 10 6 h R21 13K 1 R2 13K 1 i i MUTE BOOTSTRAP ai s MUTE BOOTSTRAP R18 RIA RIS 7 lt 7 t 9 8 CH 22F50V c t 9 8 05 T uFSQV oa P 10K 1 10K 1 13K 1 STBY E T STBY Vs Mi CRDRJOUTEUT 2 gt 2 CH2IRINUT 1 ene ps E a PES l 1021 s R17 R18 R15 R16 015 Ha NA 3 lt 3 54K 54K 51K BAK 01 E 6 Ru aV HS RHSXU 1 SUBOUTPUT 4 S 4 lt Y WZ pde I t t ico 1 2 NJM4558DD R13 X IC3A NJM4558DD2. GEMINIDJ COM SERVICE Mahal XTR 400 ACTIVE SPEAKER SYSTEM SUBWOOFER SATELLITES Gemini Sound Products Corp 120 Clover Place P O Box 6928 Edison NJ 08818 6928 732 738 9003 Phone 732 738 9006 Fax AMPLIFIER TOP PANEL Balanced Inputs Channel 2 Ehanne t 1 Bi 2 za Gy e 5 il m 1 4 E Sensitivity Controls Gemini Off 3 XTR 400 BOTTOM PANEL CHANNEL 2 CHANNEL 1 Tress ne a ce T tf mma anah 6 dio a La OUTPUTS y E a i PSLATS Tami 2 INTRODUCTION Congratulations on your purchase of an XTR 400 speaker system engineered amp manufactured by Gemini Sound Products This state of the art speaker system is backed up by a three year warranty The XTR 400 offers ultimate fidelity power handling and an array of features that makes it a highly versatile compact self contained amp powered speaker system FEATURES Active self powered 400W rms tri amp design One 15 inch bandpass subwoofer Features top hat hardware for pole mounting of a satellite speaker and metal corner protectors Two high quality satellite speakers featuring 10 inch woofers and dual piezo horns housed in trapezoidal cabinets Satellite speakers are uniquely designed for placement on stands or for use as floor monitors and protected by full front metal grill and metal corners Built in active optimized crossovers Sensit
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5. Y R23 604K 1 NJM4558DD zi 0 033uF5 5 1K C32 lt R2 R20 392K 1 y SZ 0 033uF5 Lopes hy AN L I Bs SX B R33 54K 39 2K 1 xt x T t T R20 R6 7 RA 224K 1 13K 196 HN a 82K 21 S R19 pF BAG RED 45sm 027 OF anar Mu 100F25V 51K x 54K cw gt 2 Twisted pair to Subwoofer terminal striped 7 15mm pO 3 S jux ROB TANG BLACK Am ROB SW R16 C2 C12 6 224k QUSS OATUF 5 4 Lg ROS A R32 A T TD 1K 1 U3 VRI NJM4558DD z GRN 10 2 8 2 13 CUR R19 SZN N PS 1 7 SUBWOOFER N PWs CH2 R VOLUME 39 2K 1 Sasa R27 13K 1 ye 1 OUTPUT RO SK R31 13K 1 3 Ww as LL OUTPUT 4 RE BRIW 4 RE BRIW RS 7 INMUTE Our Gg BLACK IMWITE out Tu REDBLACKSTRP 392K 1 TOF 25 10 BOUISTRIP Spr T 101 MUTE BOOTSTRAP L L 4 2K zu xv I 9 omy as 8 Cat 9 ag 9 CI touFs0v 1 mia Ps 154 sva 5 7 E E 0 V V a POWER PCB Y Y SW3 SWPONER INPUT PCB BRN n A Di 1N4148 cU 7 FUSE T 1 T 1 R9 10K 19 R5 a2 5 GRAIN Xe 24K 2504793 R3 10K 1 3 154 22024V XLF 3PH je BLU 1 To CENTER TAP i NES F POWER TRANSFORMER IC1B oA R29 1 2K 3W Rt 82K R4 10K 1 2 7 Vv ot NJMASSGDD x 1 i 10K 1 V qt 1 i up
6. Now play some music and listen for audible distortion If you do hear distortion decrease the output level using the SENSITIVITY VOLUME CONTROLS 10 MONO OPERATION Connect your MONO signal to the Channel 1 input 1 or 2 Now create a link by connecting the remaining Channel 1 input to a Channel 2 input 1 or 2 using a standard balanced cable may be purchased separately You can adjust the level of each satellite speaker using it s channel s SENSITIVITY VOLUME CONTROL 10 USING THE SIGNAL GROUND LIFT SWITCH Depending on how your sound system is hooked up sometimes applying the ground will create a quieter signal path Sometimes lifting the ground can eliminate ground loops and that annoying hum to give you quieter and cleaner overall sound With the power amp ON listen to the system in idle mode no music or signal with the ground ON The SIGNAL GROUND LIFT SWITCH 7 will be in the left position Turn the power OFF before moving the SIGNAL GROUND LIFT SWITCH 7 Now lift the ground by moving the SIGNAL GROUND LIFT SWITCH 7 to the right Turn the power back ON and listen to determine which position makes the overall sound quieter with the least amount of noise and hum CAUTION DO NOT DISCONNECT THE AC GROUND ON THE POWER AMPLIFIER IN ANY WAY THIS CAN BE VERY HAZARDOUS SETUP There are various ways to set up this system BASIC SETUP Okay this is your basic setup perfect for small parties and venue
7. atures Balanced XLR and 1 4 Jack inputs Neutrik Speakons on Satellite Channels outputs Active electronic X over Fx 100 Hz Variable speed fan Individual channel Sensitivity Volume controls Signal Ground lift switch 110 120 VAC 220 240 VAC switchable Total Weight esee 132 Ibs 60 kg SPECIFICATIONS AND DESIGN ARE SUBJECT TO CHANGE WITHOUT NOTICE FOR PURPOSE OF IMPROVEMENT PARTS LIST Designators Description Part Number MAIN PCB ZD3 ZD2 ZENER DIODE 1 2W 12V RD12EB2 079 012 D3 D1 D2 SILICON DIODE 1N4148 079 003 ZENER DIODE 1 2W 24V RD24EB2 079 020 SILICON TRANSISTORS 2SC1815 076 003 SILICON TRANSISTOR 25 4793 076 100 ELECTROLYTIC CAPACITORS 68001 50V 050 198 BRIDGE RECTIFIER KBPC804W 086 019 U3 U2 U4 U1 INTEGRATED CIRCUIT TDA7294V 074 189 CROSSOVER PCB VR1 VR2 ROTARY VR 10 L 15MM 071 228 LD1 LED GREEN 56 080 086 IC1 IC3 IC2 INTEGRATED CIRCUIT NJM4558DD BA15218 M5218AP 074 163 INPUT PCB SW1 SLIDE SWITCH SV70050 081 030 IC1 INTEGRATED CIRCUIT NJM4558DD BA15218 M5218AP 074 163 X3 X2 PHONE JACK 6 30TRS 1 4 BAL 092 078 XLR2 XLR1 XLR XLF 3PH 092 069 OUTPUT PCB 093 369 092 105 DC FAN 24V 001 613 TRANSFORMER 059 247 SLIDE SWITCH 081 023 POWER SWITCH 083 121 FUSE VBS UTE 3 15A 250V 100 068 FUSE VBS UTE 6 3A 250V 100 071 In the USA If you should experience problems with this unit please call 1 732 738 9003 for Gemini Customer Service Do not attempt to return
8. cables must be purchased separately The subwoofer is already connected internally so you don t have to worry about connecting it to the amplifier AC POWER SECTION POWER SWITCH 8 turns the unit on and off POWER LED 9 the power LED lights when the power is on FUSE 4 replace with proper type and rating AC INLET 6 is used to attach the power cord to the unit AC LINE VOLTAGE SELECTOR SWITCH 5 allows reconfiguring amplifier for either 110 120V or 220 240V AC lines OPERATION STEREO OPERATION The unit has two channels for stereo operation Each channel provides a separate signal at the speaker outputs The following instructions are for use with 8W speakers of matched power ratings We suggest only using the speakers that come with the unit With the power OFF connect your input cables from your music source such as your mixer to the Channel 1 and Channel 2 INPUTS using the XLR INPUT JACKS 1 or 1 4 PHONO INPUT JACKS 2 Connect your speakers to the Channel 1 and Channel 2 SPEAKER OUTPUTS 3 With the SENSITIVITY VOLUME CONTROLS 10 of both channels set to zero fully counter clockwise turn the POWER SWITCH 8 ON Okay now try playing some music and or talking into your microphone and set the level of your input as high as you think you ll need it This way it will be as high above the amplifier s noise floor as possible so you ll get the best possible sound with the least amount of noise
9. ivity Volume controls Satellites equipped with reliable Speakon connectors for exceptional sound cables must be purchased separately Signal Ground Lift Switch for achieving the quietest possible hum free operation Airflow controlled by variable speed fan for maximum cooling and quietest possible operation Mono or Stereo operation AC line voltage selector switch allows reconfiguring amplifier for either 110 120V or 220 240V AC lines Compact design featuring large metal handles and casters for ease in transporting CAUTIONS All operating instructions should be read before using this equipment k 2 To reduce the risk of electrical shock do not open the unit There are NO USER REPLACEABLE PARTS INSIDE Please refer servicing to a qualified Gemini Sound Products service technician 3 Do not expose this unit to direct sunlight or to a heat source such as a radiator or stove 4 This unit should be cleaned only with a damp cloth Avoid solvents or other cleaning detergents 5 When moving this equipment it should be placed in its original carton and packaging This will reduce the risk of damage during transit 6 DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE 7 DO NOT USE ANY SPRAY CLEANER OR LUBRICANT ON ANY CONTROLS OR SWITCHES CONNECTIONS INPUT SECTION There are two parallel input connectors one female XLR and one 1 4 jack per channel Either can be used as an input or as a link to chain amplifie
10. oofer XTR 400SUB Amplifier s Output Power 230 Wrms on subwoofer channel Frequency response 12 Hz 100 Hz CGOmpOneniS u c 15 woofer Features Efficient band pass cabinet design Large metal handles Metal protection corners Four 2 wheels Amplifier assembly on the back 35mm standmount cap on top Black carpet finish Rubber feet Dimensions WxDxH 20 x31 x24 5 508 x 788 x 622 mm ECE 96 lbs 44 kg Satellites GT 1002s Amplifier s Output Power 2x85 Wrms on satellite channels Frequency 100 Hz 20 kHz COmpDpOneniS LL UUL een abe Dao oU d ERU den 10 woofer 6 dual piezo horn Features Trapezoidal cabinet Full front protective metal grill Metal protection corners 35 mm standmount cup on the bottom Black carpet finish Rubber feet Neutrik Speakon connector Dimensions W x D x H 12 5 x 9 x 18 318 x 229 x 458 mm cr sat 18 Ibs 8 kg each Total System Maximum SPL continuous 120 dB ls I M TEE E 1 Vrms Input Impedance 10 kOhm unbalanced 20 kOhm balanced Fe
11. rs XLR INPUT JACKS XLR INPUT JACKS 1 electronically balanced inputs accept a standard XLR male connector Pin 1 2 shield ground pin 2 hot or positive and pin 3 cold or negative 1 4 PHONO INPUT JACKS 1 4 PHONO INPUT JACKS 2 accept a balanced as well as an unbalanced line The unbalanced line uses a standard tip sleeve connection The tip is positive and the sleeve is negative ground The balanced line uses a tip ring sleeve connection Tip hot or positive ring cold or negative and sleeve shield ground SENSITIVITYNOLUME CONTROLS SENSITIVITYNVOLUME CONTROLS 10 control the input levels for each channel of the 2 satellite speakers The volume level of the subwoofer is controlled automatically to match the volume levels of the satellite speakers It will always maintain a perfect balance to give you incredible sound quality SIGNAL GROUND LIFT SWITCH SIGNAL GROUND LIFT SWITCH 7 is used to lift the balanced input connectors ground shield from the amplifier s ground When the signal ground lifted the sound source disconnects from the amplifier s ground preventing ground loops which can generate hum and noise See the Signal Ground Lift Switch Instructions for more detail 3 OUTPUT SECTION Disconnect unit from the AC power source before making any connections SPEAKER OUTPUTS 3 The speaker output connectors are Speakon connectors that will accept cables with Speakon connectors These
12. s The ideal location for your subwoofer is close to a wall or in a corner This will give you the fullest bass response Your 2 satellite speakers can be placed up on stands on each side stands must be purchased separately TWO SYSTEM SETUP This setup is perfect for larger venues This setup requires 2 XTR 400 systems This will give you a total of 800 watts rms Place a subwoofer on each side to the left and right Using the high hat hardware and connecting pole which can be purchased separately place the pole in the high hat socket on the subwoofer and a satellite speaker on top of the pole The 2 remaining satellite speakers may be used as either floor monitors or placed on stands elsewhere in the room giving you a louder and fuller sound Each speaker system in this setup must be used in MONO mode see Mono section Connect the system that is on the left side of the audience to the LEFT channel of your mixer and the system that is on the right side of the audience to the RIGHT channel of your mixer ACTIVE SPEAKER SYSTEM SUBWOOFER SATELLITES The XTR 400 features a unique design for ease in transporting The 2 satellite speakers conveniently fit into a special recessed section of the subwoofer and are securely fastened using a strap that attaches to the handles included SHOULD YOU EXPERIENCE ANY DIFFICULTIES OR PROBLEMS PLEASE CALL 1 732 738 9003 FOR GEMINI CUSTOMER SERVICE SPECIFICATIONS Subw
13. this equipment to your dealer 5 INPUT PCB SW1 0 J sms U T OUTPUT PCB XTR400 3 R13 R14 EM e d PO hi T ee w R3 Ug P mg C1 i c a mi C5 U R12 D2 il e C pe e p L2 21 Il a R10 J b x e U 201 14 I et XTR400 1 C15 2 i J3 BLK O C13 TOP LAYER e X6 REC1 a RED R24 Jy RED X8 J10 C18 _ 19 37 X10 21 ual 9 mE C29 la C7 ea e e g R26 L ez D a R30 e e C22 3 X12 DE R32 C20 s lt R36 e a L j am ja 11 x i 1 x d e e si 5 310 5 a ac s LIP sl s EM Lcu Q an s LD s9 LO C sm e amp 8 e gt e SLY A CHUA e I 91 LYA 9 LIH Ne e 012 be e bw 25 6 vx n Lf LX ci a e LLY U E 2 OLY a L__ s 6 li s LlI m U e LPN U OCH e MAIN PCB Ri3 B R8 Md am
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