galaxy 34 vacuum tube stereo integrated/power
Contents
1. Basic troubleshooting of an amplifier is similar to troubleshooting of any other electrical or electronic equipment Always check the most obvious possible causes first The table below contains some common problems causes and remedies No power when POWER is Power plug not inserted Plug in securely turned on correctly Replace the fuse with The fuse is shorted out new one of the same type Soundstage and image seem to Land R of input or output are Reconnect properly float and not focused reversed or positive and negative of speaker terminal is reversed No sound Volume control 15 set to Turn up the volume minimum Source Selector set to Check Selector wrong position Speakers are not connected Check speaker cables Wrong input is selected Check input selection Background noise too loud Bad signal cable Replace signal cable Signal cable power supply Re arrange connections to cord and the video good order Keep signal frequency cable are placed cables away from the others too close or get tangled up Faulty components or Contact authorized dealer 1 circuits 2 DIAGRAMS SELECTOR HEADPHONE 4 DOO 260 O 0 0 DIAGRAM 1 FRONT PANEL OMUTE CD INPUT SEL DAUXI AUX2 TR UL SEL DIRECT IN TR UL INDICATOR REMOTE OMETER VOLUME METER SEL DHEADPHONE JACK POWER SWITCH MODEL AS 6i DIAGRAM 2 REAR PANEL CD INPUT ChAUX1 I2. 4 Select a safe and well ventilated location This product contains vacuum tubes with glass container that are fragile and breakable During operation the vacuum tubes will generate sufficient heat that can burn to the touch Therefore 1t should be kept away from children and house pets The unit should be placed in a well ventilated area to allow heat to escape freely Insufficient air flow may cause the unit to overheat which may result in malfunction or in some cases catch on fire Always observe the following guidelines e Keep product at least 10 inches away from all objects such as drapes and wall e Do not place this product in a confined space or cabinet with poor ventilation 5 Handling the power Cord Using a damaged power cord or one with bare wires exposed 15 a fire hazard and may result in electric shock Always observe the following guidelines e When unplugging from the AC outlet never pull on the cord always grip the plug when unplugging the power cord e Never place this product itself furniture rugs or other heavy objects on the power cord 10 e If the power cord must pass near heater make sure the cord is far enough from the heater so as to prevent power cord from melting from direct heat or come into contact with the heater accidentally e Ifthe power cord 15 damaged replace it before operating the unit again When the product will not be used for an extended period of time If you go away on holidays or otherw
3. GALAXY 34 VACUUM TUBE STEREO INTEGRATED POWER AMPLIFIER Thank you for using AUDIO SPACE Galaxy Series vacuum tube stereo integrated power amplifier Please read this instruction manual carefully before unpacking the contents and using your amplifier SPECIFICATIONS Input impedance gt 89k ohm RCA Direct In Output impedance 4 8 ohm Output power 16Wx2 TRIODE CLASS AB PUSH PULL 32Wx2 ULTRALINEAR CLASS AB PUSH PULL Damping factor gt 5 Frequency response 20Hz 30kHz 1dB E THD lt 1 20Hz 20kHz REF OUTPUT Total gain 25dB Input sensitivity 300mV 600mV S N ratio gt 80dB HUM NOISE lt 3mV Channel balance lt dB 20Hz 20kHz MAX VOLUME Channel separation gt 60dB 1kHz 3 3kHz Vacuum tubes V1 V2 V3 V4 EL34x4 V5 V6 6NSP 6SN7 2 V7 V8 6N9P 6SL7 x2 Power requirement 230 5 50 60Hz Dimension 330x400 190mm DxWxH Weight 22 5kg N W 26 2kg G W Information and diagrams in this instruction are subject to change without notice WARNING A CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN DO NOT OPEN THE CHASSIS OF THIS PRODUCT To reduce the risk of electric shock do not remove the bottom cover of amplifier Do not attempt to repair the product yourself No user serviceable parts inside Refer all service to qualified service personnel Keep liquids away from the amplifier If liquid 1s spilled into the unit disconnect the AC
4. NPUT 8 AUX2 INPUT DIRECT INPUT OREC OUT 6 L CH SPEAKER OUTPUT R CH SPEAKER OUTPUT 8 POWER INPUT SOCKET DIAGRAM 3 REMOTE CONTROL UNIT DMUTE 2 VOLUME SINPUT SELECTOR 4 TRI UL SELECTOR AUDIO SPACE AS900 FAMILY 114 202 POWER SUPPLY TRANSFORMER EN cd cy ci UUUUUUUUUU nnnnnnnnnn UUUUUUUUUU O O 3 5 DIAGRAM 4 VACUUM TUBE INSTALLING POWER TRANSFORMER AUDIO TRANSFORMER BIAS ADJ 4 amp BIAS TEST TERMINALS REMARK V1 V2 V3 V4 EL34 V5 V6 GNSP V7 V8 6N9P ASAS CD MD SACD DVD PLAYER AUDIO OUTPUT CD INPUT AUDIO SPACE GALAXY 34 DIAGRAM 5 CONNECTIONS
5. d by the LEDs on the front panel e mute or control the volume of the amplifier e select Triode or Ultralinear mode of operation while the amplifier is on NOTE amp To prevent damage to circuit never short circuit Positive and Negative speaker terminals sure to set the VOLUME control to the lowest position before turning on or disconnecting the speakers while the unit is on VI HEADPHONE JACK The amplifier is optionally equipped with a standard headphone jack located on the front panel When a headphone is inserted into the headphone jack the SPEAKER OUTPUT is automatically switched off VII ADJUSTING BIAS This integrated amplifier 15 equipped with fixed bias adjustment To ensure your amplifier is operating in its intended efficiency it 1s necessary to set the bias voltage of the output tubes to specification In general adjustment is needed when the system is new or output tubes have been replaced Once the output tubes have been burned in about 50 hours of use the bias voltage should become very stable Bias voltage test points and adjustment pots are marked as and V1 V4 respectively on the top of the chassis BIAS ADu V1 V2 The proper bias voltage 1s 0 3V for VI V2 V3 and V4 Bias voltage can be measured using the analog meter on the front panel Use the METER RANGE knob on the front panel to select the output tube VI to V4 for which you are adjusting the bia
6. er in conjunction with an external pre amplifier Using the DIR IN terminals will bypass the VOLUME control circuitry e SPEAKER OUTPUT With speaker cables not provided connect the loudspeakers to the output terminals of the amplifier that have the suitable output impedance on the rear panel of the amplifier Be sure to match the L and R channels of the amplifier to the L and R loudspeakers The 0 ohm terminals should be connected to the negative terminal of the loudspeakers while the 4 or 8 ohm terminals should be connected to the positive terminal of the loudspeakers 4 e POWER Plug the power cord into the power socket on the rear panel and the other end of the cord into an electrical outlet IV POWERING ON When you are sure the connections are correct turn on the POWER switch on the front panel of this amplifier The mute LED will light up indicating the protection delay circuit is triggered and the VOLUME is reset to the lowest level automatically After about 45 seconds the mute LED will go off indicating the amplifier 15 in normal powered on mode The analog meter on the front panel 15 used to track the output signal level and measure the bias voltage of the output tubes Turn the METER RANGE knob to either L or R to track the output signal level of the Left or Right channel V REMOTE CONTROL The remote controller can be used to e select the proper input source as indicate
7. iping clothe 4 two pieces of spare fuse 5 a remote control unit batteries supplied To unpack 1 remove the top covering foam pad from the carton 2 carefully lift the amplifier out of the box by holding both sides of the amplifier and transfer it onto a flat surface 3 remove the plastic bag and protecting paper from the amplifier 4 remove the vacuum tube protective cage by lifting it straight up 5 remove all protective padding from the vacuum tubes and make sure the tubes are seated in their sockets properly afterward 6 remove all protective clear plastic film from the chassis and transformers 7 replace the vacuum tube protective cage 8 move the amplifier to where you will connect it to your audio system NOTE If you find any obvious damage to any of the contents please contact your authorized dealer immediately You may want to save the carton and packing material for future use Please check whether your line voltage is the same as that marked on this unit If not please contact your authorized dealer or our company CONNECTING Connecting the amplifier to your audio system e AUDIO INPUT With signal cables not provided connect your sound source s to the amplifier using the suitable input terminals CD AUX1 AUX2 on the rear panel Do not mix the L and R channel signals between the amplifier and the sound sources DIR IN This integrated amplifier can be used as a stereo power amplifi
8. ise will be absent for a long period of time as a safety precaution unplug the power cord from the electric outlet or switch off the electrical outlet that is connected to the unit via the power cord Keep the unit away from any moisture Do not place any objects containing water or other liquids near or on this product If liquid comes into contact with this unit it can cause malfunction electrical shock or fire If liquid should get inside the chassis unplug the power cord from the AC mains at once and contact the nearest authorized service center or qualified electronics technician Never insert objects into this product Do not insert or drop any object of metallic inflammable or other material into this product through the air vents as this can cause damage electrical shock or possibly fire Keep the product away from strong magnetic object Operating this product in or near strong magnetic field will affect the performance of this product Do not alter the intended grounding The product is equipped with THREE WIRE GROUNDING TYPE AC PLUG to provide proper grounding Altering such grounding may result electric shock OPERATING INSTRUCTIONS 1 BEFORE UNPACKING The carton should be placed on a flat surface with the arrows pointing upward UNPACKING Besides this instruction manual you will find the following contents 1 one AUDIO SPACE Galaxy 34 amplifier 2 a power supply cord 3 handling gloves and w
9. power cord from the unit at once and consult your authorized dealer CAUTION BEFORE OPERATING THIS NEW PRODUCT PLEASE CAREFULLY READ THIS OPERATION MANUAL AND SAVE IT FOR FUTURE REFERENCE IT MAY BE USEFUL IF YOU HAVE ANY DIFFICULTIES IN OPERATING THIS PRODUCT IN THE FUTURE IMPORTANT SAFETY INFORMATION 1 Itis dangerous to use this new product if It begins to smoke smell or make strange 15 If this happens immediately switch off the power unplug the power cord and contact the nearest authorized service center 2 Never remove the bottom cover Do not remove the bottom cover of this product This product produces high level voltage and current that can be lethal Touching any high voltage parts inside the unit can result in electric shock and or cause damage to the unit Do not tamper with any component or part inside the unit Even with the power turned off high level of electric charge can remain in the energy storing capacitors for extended period of time up to months Any possible adjustment inside the chassis or service required should to be referred to authorized Audio Space Acoustic Laboratory Ltd dealer or other qualified electronics technician 3 Avoid exposing this product to direct sunlight dust heat or moisture Do not place this product in a location where 1t 1s exposed to direct sunlight heavy dust intense heat high humidity kitchen smoke etc as these may cause the product to malfunction
10. s voltage With a small flathead screwdriver turn the corresponding bias adjust pot located on the top of the chassis until the indicator of the meter 15 pointing at the 5 pre marked 0 3V point on the lower scale of the meter as shown in the diagram below Repeat the above procedure for each of the output tubes 1 to V4 Alternatively a voltmeter can be used to measure the bias voltage 1f higher accuracy 15 desired Bias voltage 15 measured across the test point pair closest to the selected output tube as marked on the top of the chassis this case the METER RANGE knob need not be used With a small flathead screwdriver turn the bias pot of the selected output tube V1 V2 V3 or V4 until the bias voltage 1s set at 0 3V Repeat the procedure for each of the output tubes VIII REPLACING VACUUM TUBES Follow the guidelines below 1f and when 1t becomes necessary to replace any vacuum tube of the amplifier Be sure to turn off the power and disconnect the power cord from the amplifier before replacing any vacuum tube e Front end amp Buffer Stage tubes 6N9P 6N8P or 6SL7 6SN7 Any of the tubes can be replaced with tubes of the same type or equivalence e Output tubes EL34 The output tubes should be replaced in pairs The pair on the left and the pair on the right should be matched pairs A matched quad all 4 tubes is highly recommended Be sure to verify the correct bias voltage afterward TROUBLESHOOTING
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