Manual QSM-808A, 820A
Contents
1. USER MANUAL OSM 808A 820A EHETE O bdk EEE OSM 808A OSM 820A Manual 1 Security Precautions Carefully to READ the instruction in this manual before use Certainly to OBSERVE the INSTRUCTION in this manual regard convention of safety symbols and messages Please KEEP this user MANUAL nearby for anytime reference Safety symbol and Message Conventions Below described safety symbol and messages are to prevent bodily injury and property damage Before operating the amplifier read this manual first so you completely knowing the potential safety hazard and understanding the meaning of the safety symbols and messages Indicates a potentially hazardous situation which if AN WA R N N G mishandled could result in death or serious body injury and or property damage Indicates a potentially hazardous situation which if A N CA U T O N mishandled could result in moderate or minor body injury and or property damage N WARNING E When Installing the Amplifier e DONOT installing or mounting the amplifier in unstable locations such as on the rickety table or the slanted surface It may result in the amplifier falling down and causing body injury and or property damage e Be sure to ground to the safety ground earth terminal to avoid electric shock Never to ground to a gas pipe for tragic disaster may occur e Use the amplifier only with the voltage specified on the amplifier Us2. fire or electric shock e DO NOT open nor remove the amplifier cover to prevent fire or electric shock for there are high voltage components inside the amplifier N CAUTION Mi When Installing the Amplifier e DONOT remove nor plug in the power supply plug with wet hands for it may cause electric shock When unplug the power supply cord be sure to grasp the power supply plug DO NOT pull on the cord itself Operating the amplifier with damaged power supply cord may cause fire or electric shock e Avoid installing the amplifier in humid or dusty places the area exposed to the direct sunlight locations generating smoke or steam or the spot near the heaters It may result in fire or electric shock When moving the amplifier be sure to remove its power supply cord from the wall outlet Moving the amplifier with the power cord connected to the outlet may cause damage to the power cord and resulting in fire or electric shock When removing the power cord be sure to grasp its plug to pull e DONOT block the ventilation slots of the amplifier chassis It will cause the temperature rising and result in fire OSM 808A OSM 820A Manual Mi When Using the Amplifier Make sure that the volume control is turned to minimum position before power is switched on Loud sound produced at high volume when power is switched on may impair hearing DO NOT place heavy objects on the amplifier for it may cause it fall and may result in body injury a
3. ing the voltage higher than specified may cause fire or electric shock e DO NOT cut twist damage nor modify the power supply cord In addition avoid using the power cord close to heaters and don t place heavy object including the amplifier itself on the power cord for it may cause fire or electric shock e DONOT expose the amplifier to rain or the environment where it may be splashed by water or other liguids for doing so it may cause fire or electric shock OSM 6505A Manual m When using the Amplifier e When found following irregular situation during amplifier is in use immediately switch off the power disconnect the power supply plug from the AC outlet Don t try to operate the amplifier again Contact your local dealer to check the ampiifier The amplifier falls Amplifier is malfunction Water or any metallic object gets into the amplifier The smoke or strange smell coming from the amplifier The power supply cord is damaged such as exposure of the core disconnection etc SASS e DO NOT put cups bowls or other containers with liquid or metallic object in it on the top of the amplifier If they spill accidentally into the amplifier it may result in fire or electric shock e DO NOT touch the power supply plug during thundering and lightning for it may result in electric shock e DO NOT insert or drop the metallic objects or flammable materials into the ventilation slots of the amplifier for it may result in
4. nd or property damage Besides the object itself may cause damaged or body injury DO NOT operate the amplifier for the extended period of time with the sound distorting It is an indication of malfunction which can cause heat and result in fire Switch the power off and unplug the power supply plug from the AC outlet for safety purposes when cleaning or leaving the amplifier unused for 7 days or more Fire or electric shock may occur If the dust accumulates on the power supply plug or in the wall AC outlet fire may result in Clean it periodically In addition make sure the plug is inserted in the wall outlet securely Contact your local dealer to clean the dust it the dust has accumulated in the amplifier for a long period of time Dust accumulation may result in fire or damage 2 Description QSM 808A and QSM 820A are stereo mixer amplifiers designed for multi input application There are 6 input sources Mic1 Mic3 CD AUX and Tape Each microphone has its own level control while CD AUX and Tape share the same level control And there are bass treble and level volume control for the output The MIC 1 has the voice first priority function The output power of QSM 808A is 40W x 2 RMS and QSM 820A is 100W x 2 RMS To ensure the amplifier safety it has speaker short over temperature and overload protection It accepts AC 115V 230V 50 60 Hz QSM 808A and QSM 820A are the ideal stereo mixer amplifiers for multi inpu
5. ns voltage 6 Connection Microphone Connection Mic1 3 inputs are unbalanced standard 1 4 Phone Jack TIP SLEEVE Mute Function Priority Microphone Mic1 input has VOX priority over other input source OSM 6505A Manual Input Connection The equipment provides 3 input jacks which may be used for connecting other signal sources CD AUX and Tape A rotary switch at the front panel for the user to select desired input source To connect microphone insert the microphone plug into the jack on the rear panel All 3 microphones can be used But only the MIC 1 has voice priority function It will mute other input sources when the user begins to speak Booster In can also be connected for the signal from other mixer amplifier or pre mixer amplifier e Output Connection There are 2 pair binding posts on the rear panel for the connection of 8 ohm stereo speaker Pay attention to the correct polarity of the speaker while connecting Preout Connection Preout jack is to connect the output signal 1V to other amplifier Record Out Connection Connect Record Out jack to the record machine The Record Out signal is 1V 7 Operation After all connections are completed rotate CD AUX Tape Selection Switch to the input source desired Before turn on the power switch make sure the master volume control is at proper position not at maximum position to avoid sudden loud sound Then turn on the
6. power switch Turn the master bass treble control to what you desire For the input signal if necessary turn the corresponding level control to your desire Technical S Manual 8 Technical Specification Model gsM 808A4 GSM 8204 Type Mixer Amplifier Power Supply AC 115V 230V 50 60Hz 10 Switchable Output Power 40W x 2 100W x 2 Total Harmonic Distortion lt 0 05 O 1KHz Sensitivity 1 4 PHONE JACK UNBALANCED MIC 1 3 1 mV 600 ohm RCA JACK Unbalanced CD 200mV 20K ohm AUX 200mV 20K ohm Tape 200mV 20K ohm Record Out Pre out 1V Frequency Response 20Hz 20KHz 3dB Output 8 ohm Binding Post Signal to noise ratio lt 70dB Damping Factor gt 200 Voice Priority Mute MIC 1 Protection Speaker Short Temperature Overload AC power consumption 150W rated power 500W rated power Dimensions H x W x D mm 88 H x 425 W x 305 D mm Weight 7 kgs 9 kgs Mounting Free standing or 19 rack WARNING THIS APPLIANCE MUST BE EARTHED CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN
7. t source OSM 6505A Manual 3 Panel Description FRONT PANEL DESCRIPTION 1 MIC 1 Volume Control 7 Treble Control 2 MIC 2 Volume Control 8 Master Volume Control 3 MIC 3 Volume Control 9 Power Switch 4 CD AUX Tape Selection Switch 10 Power Indicator LED 5 CD AUX Tape Volume Control 11 Level Indicator LED 6 Bass Control REAR PANEL DESCRIPTION 00 00 00 ojojo 3331000 00 00 89000988 A 1 AC Power Input Socket 10 AUX Input Jack 2 AC Fuse 11 CD Input Jack 3 Earth Ground Connection Screw 12 MIC 3 Input 4 Speaker Output Right 13 MIC 2 Input 5 Speaker Output Left 14 MIC 1 Input 6 Booster Input Jack 15 AC Voltage 115V 230V Selection Switch 7 Preout Jack 16 Speaker Output Right 8 Record Out Jack 17 Speaker Output Left 9 Tape Input Jack OSM 808A OSM 820A Manual KS Features Stereo Input Output 3 selectable input sources CD AUX Tape 3 MIC Input Voice priority function on MIC 1 Individual MIC input level control Booster In Record Out Preout Overload over temperature and speaker short protection Master Bass treble and volume control AC power in 2U height 19 rack or table mounted 5 Power Source AC Power Source The supply transformer has been designed for use on either 115V or 230V 50 60Hz selected by a push switch on the rear panel The amplifier is factory set at 230Vac mai
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