NF02651(MA-4075 SHOW_V1-2)說明書-RS ^文.cdr
Contents
1. 10 Monitor Volume This knob controls the output signal level to monitor output on 8 9 10 11 VOLUME controls the output signal levelof ZONE1 12 This stereo 6 segment LED meter indicates the level of the overall output signal 13 14 15 Zone1 VOLUME LED VU meter MONITOR selector 12 1311 Push MONITOR button down then it connects the signal from amplifier 1 to monitor volume Release the button then it cuts offthe signal connection to monitor volume The otherthree buttons are operatedin the same way PL This LEDis the powerindicator Whenthe amplifier is powered on thisLED lights up Whenthe amplifier is powered off this LED lights off Power switch When the switch is set inthe position ON the unit is powered on When the switchis setin the position OFF the unit is powered off The Rear Panel 16 17 18 Intelligent fan This is an intelligent fan When the temperature is below 50 C the fan stops running When the temperature is above 50 C it starts to run and the fan increases running speed as the temperature is rising AC Input 16 This inlet connects the unit with the main power AC fuse The fuse protects the alternating current circuit ofthe unit and the fuse can only be replaced inthe event of fuse damage 17 18 INSTALLATION NOTES At alltimes the amplifierhas tobe op2. SEIKAKU TECHNICAL GROUP LIMITED No 1 Lane 17 Sec 2 Han Shi West Road Taichung 401 TAIWAN Tel 886 4 22313737 Fax 886 4 22346757 http www show pa com e mail sekaku sekaku com All rights reserved to SEIKAKU All features and content might be changed without prior notice Any photocopy translation or reproduction of part of this manual without written permission is forbidden Copyright 2006 SEIKAKU Group NF02651 1 2 MULTIZONE PA MIX POWER AMPLIFIER MA 4075 a MA 4075 Multizone PA Mix Power Amplifier ka www show pa com IMPORTANT Please read this manual carefully before operating this unit for the first time All rights reserved to SHOW All features and content might be changed without prior notice Any photocopy translation or reproduction of part of this manual without written permission is forbidden SAFETY RELATED SYMBOLS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN This symbol wherever used alerts AN you to the presence of un insulated and dangerous voltages within the product enclosure These are voltages that may be sufficient to constitute the risk of electric shock or death AN This symbol wherever used alerts you to important operating and ma intenance instructions Please read Protective Ground Terminal AC mains Alternating Current h Hazardous Live Terminal ON Denotes the product is turned on OFF Denotes the product is turned off WARNING Des
3. ccomplished by inserting the supplied mains cord into the corresponding socket Sound column Contact Horn speaker VOICE PRIORITY Speaker Aux signal Amplifier ve om O Jon g non E mo Aa Mains Microphone AM FM tuner Sor Cassette recorder 2S Ea ___ 9 Desk Top Microphone G COM 42 82 25V 70V soov_ A Le es Connecting the speakers with 70V output 42 82 25V _70V 100v gococococog Connecting the speakers with 100V output 19 20 21 22 23 24 25 Priority Terminal AC Voltage Selector When the AC Voltage Selectoris setto the left 115V it selects the 19 power at 100V to 127V When the AC Voltage Selectoris setto the right 230V itselects the power at 220V to 240V Monitor Line Out Monitor Line Out can be connected with other appliance such as amplifier recorder etc Monitor 1W8Q The terminal ismeant for the connection of asmall external loudspeaker that gets driven by aninternal auxiliary power amplifier providing a nominal output 1Watt Only the mixed audb signal coming from AUX IN are inclu d in the outputted signal In addition the output signal is controlled only bythe volume controlof the CH4 CH5 music signal level control 20 21 22 23 When these terminals are short circuit i e By means of using anelectrical switc
4. cribes precautions that should be observed to prevent the possibility of death or injury to the user CAUTION Describes precautions that should be observed to prevent damage to the product Disposing of this product should not be placed in municipal waste and should be separate collection WARNING Power Supply Ensure that the mains source voltage AC outlet matches the voltage rating of the product Failure to do so could result in damage to the product and possibly the user Unplug the product before electrical storms occur and when unused for long periods of time to reduce the risk of electric shock or fire e External Connection Always use proper ready made insulated mains cabling power cord Failure to do so could result in shock death or fire If in doubt seek advice from a registered electrician e Do not Remove any Covers Within the product are areas where high voltages may present To reduce the risk of electric shock do not remove any covers unless the AC mains power cord is removed Covers should be removed by qualified service personnel only No user serviceable parts inside e Fuse To prevent fire and damage to the product use only the recommended fuse type as indicated in this manual Do not short circuit the fuse holder Before replacing the fuse make sure that the product is OFF and disconnected from the AC outlet e Protective Ground Before turning the product ON make sure tha
5. erated under appropriate conditions This includes that the operation location provided sufficient ventilation and the device can not be exposed to direct sunlight or the direct radiation or reflection from any heat source Installing the loudspeaker systems choose a location that gets not affected by extreme and or constant vibration or other mechanical oscillation Also make sure that the speakers are installed at locations that are free from dust and or moisture CAUTION We strongly recommend that you leave the connection of the appliance to the qualified and experienced service technicianwho isspecialized inconnecting electrical and electronic equipment Do not take the risk of Electro shock hazard To reduce the risk of Electro shock all connections have to be accomplished before it is permissible to connect the amplifier with the main supply Before connecting the appliance to the mains supply once again make sure that all connections are carried out correctly and that no short circuit exist The overall sound reinbrcement installation has to be in accordance to the laws regulations standards and guidelines that are relevant and applicable in that country where the equipmentis going to be operated AC POWER SUPPLY CAUTION Before using the amplifier for the firsttime make sure thatthe appliance voltage is corret Connect the amplifier only to grounded mains outlets Connecting the amplifier to the mains supply 115 230Vac has to be a
6. g Refer all servicing to qualified service personnel only Do not perform any servicing other than those instructions contained within the User s Manual SPECIFICATION Model MA 4075 Output power capacity RMS 40Wx4 Peak output 90Wx4 Frequency response 50 17000Hz 3dB Totalharmonic distortion Less than 0 5 1KHz nominal power capacity Microphone Better than 55dB rated output Line b etter than 60dB rated output Inputs sensitivity impedance CH1 3 XLRand 6 3mm combination socket bal unbal Mic 42dB 38dB 600o0hm bal un bal Line 26B 20dB 15Kohm bal unbal LINE IN stereo RCA jack unbalanced CH4 10dB 50Kohm CH5 0dB 50Kohm Tonecontrols Bass 10dB 100Hz Treble 10dB 10KHz Outputs for speakers Ohms 4 ohm 8 ohm Outputs for speakers Volts 25V 70V 100V Monitor output 1Wrms Signal noise ratio Phone output 0 5W into 470hm Line out 1 2V Controls 5 Gain controls for Ch1 5 7 Volume controls forCh1 5 tel pagina monitor phone 4 Master volume control 5 Treble controls 5 Bass controls 5 Mute controls 4 Zone select switch foreach channel 4 Zone monitor select switch 1 ACselect switch Indicator Power indicator 4 Zone output level meter 1 Monitor output level meter 5 Mute indicators Power supply Consumption 115 230 Vac 5 60 50Hz 400VA Dimensions 483mm W x 132mm H x 310mm D Note Specification design and appearance are subjectto change withoutprior n
7. h the audio signals coming from CH2 CH3 CH4 CH5 are attenuated when the short circuit are removed all the signals appear again Input AUX Paging The terminals input lets you connectto an auxiliary signal The input features Voice Priority function which overrides all other input signals once an auxiliary message is sent If you want to have this function disabled forever please contact a distributor a Zone There are four dip switches here Push the dip switch up it switche off and vice versa b Volume It controls the volume of soundsource that isconnected to the Tel Paging Turning the knob clockwise increases the volume of the corresponding source It is recommend to leave the control ofmomentarily not usedinput at theirminimal setting 0 LINE IN inputs an audio source with a high level output signal such as aAM FM tuner a cassette deck a CD player etc Use input sensitivity switch suitable for difference appliances They are able to take RCA type coaxial connectors and unbalanced signals 26 The mono MIC LINE channels These arethe channels from Channel1 to Channel4 You can connect balanced lowimpedance microphones to the XLR socket On the 1 4 phone jack you can connect either a microphone ora line levelinstrument Youshall never connect an unbalanced microphone It the XLR socket if you do not want to damage both the Microphone and the Mixer 27 Ch1 CH2 CH3 and inputs sensitivi
8. otice The Front panel saw fl MA 4075 Multizone PA Mix Power Amplifier O 2 as 1 Gain knob this knob controls input gain Turn the knob clockwise thenthe input increases Turn the knobcounter clockwise then theinput decreases 2 High knob 4 This is the treble control You can use itto get ridof high frequencys6 noises or toboost the soundof cymbals orthe high harmonicsof 7 the human voice The gainrange goes from 10dB to 10dBwith the central frequency 10kHz 3 Low knob This is the Bass control Boostmale voice orkickdrum and bass guitar Your system will sound much bigger than what it is The gain range goes from 10dB to 10dB andthe center frequencyis 100 Hz 4 Mute It mutes the signals from the corresponding channel 5 Mute LED When the mute keyis pressed down muteLED lights up and vice versa 6 VOL knob This knob controls volume Turn the knob clockwise andthe volume increases Turnthe knob counter clockwise andthe volume decreases 7 Zone selector Z1 Z2 Z3 Z4 can be considered as signal assignment switches Press the button Z1 down and signal willbe assignedto ZONE 1 Release the buttonand it stops Assigning signal to ZONE1 Z2 Z3 Z4 canbe operatedin the same way 8 Phone Volume This knob controls the volume of Phone referto 7 Turnthe knob clockwise and it increases the volume and vice versa 9 Phone The signals of amplifier canbe sent toa pair ofheadphones through this socket
9. t it is connected to Ground This is to prevent the risk of electric shock Never cut internal or external Ground wires Likewise never remove Ground wiring from the Protective Ground Terminal Operating Conditions Always install in accordance with the manufacturer s instructions 1 To avoid the risk of electric shock and damage do not subject this product to any liquid rain or moisture Do not use this product when in close proximity to water Do not install this product near any direct heat source Do not block areas of ventilation Failure to do so could result in fire Keep product away from naked flames IMPORTANT SAFETY INSTRUCTIONS Read these instructions Follow all instructions Keep these instructions Do not discard Heed all warnings Only use attachments accessories specified by the manufacturer Power Cord and Plug Do not tamper with the power cord or plug These are designed for your safety Do not remove Ground connections If the plug does not fit your AC outlet seek advice from a qualified electrician Protect the power cord and plug from any physical stress to avoid risk of electric shock Do not place heavy objects on the power cord This could cause electric shock or fire Cleaning When required either blow off dust from the product or use a dry cloth Do not use any solvents such as Benzol or Alcohol For safety keep product clean and free from dust e Servicin
10. ty and XLR phantom switch By turning the switch onto the LINE position the CH1 Ch2 Ch3 input can be connected to an audio source with highlevel signal output By turning these switches onto the MIC position CH1 CH2 Ch3 input can be connected to a dynamic microphone with low impedance By turning the switch onto the Phantom position it connects phantom supply for XLR pin2 and pin3 of CH1 CH2 Ch3 whichis necessary to operate condenser microphone which requires thistype of externalsupply It is recommended to use this switch with the general volume set on minimum 28 Line Out Bal Unbal 27 These terminals can be connected with other appliance such as amplifier recorder etc 29 Power Amp Output These terminals allow connecting speakers Q 82 25V 70V toov_ s slelelefele efele Total impedance 4 ohms G COM 42 82 25V 70V 10v Total impedance 8 ohms OM 42 82 25V 70V oE Connecting the speakers with 25V output
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