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Fire brigade/PA system                                                Conference power amplifier

 

 

2. 

Brief Description of Product

 

2.1 

Description of Front Panel

 

 

 

 

 

 
 
 
 

  Power switch and power indicator            Press down the power switch button to turn on the 

power, and the power indicator is lit when the  power is turned on; If press down the power 

switch button again to pop up the switch, the power is turned off, and the power indicator is 

distinguished when the power is turned off. 

  7-band equalizer adjustment slider    With the slider sliding up to increase the gain of 

frequency band, and sliding down to attenuate the gain of frequency band. 

  Microphone 6 volume adjustment knob          To adjust clockwise to increase the volume, and 

to adjust counter clockwise to decrease the volume. 

  Microphone 5 volume adjustment knob          To adjust clockwise to increase the volume, and 

to adjust counter clockwise to decrease the volume. 

  Microphone 4 volume adjustment knob          To adjust clockwise to increase the volume, and 

to adjust counter clockwise to decrease the volume. 

  Microphone 3 volume adjustment knob          To adjust clockwise to increase the volume, and 

to adjust counter clockwise to decrease the volume. 

  Microphone 2 volume adjustment knob          To adjust clockwise to increase the volume, and 

to adjust counter clockwise to decrease the volume. 

  Microphone 1 volume adjustment knob          To adjust clockwise to increase the volume, and 

to adjust counter clockwise to decrease the volume. 

  Microphone 1 port    With the No.1 priority function, to facilitate the inserting of an 

emergent PA . 

  Output volume level meter     If the 4th and the 5th indicators of the level meter are 

normally lit, it means that the output has a top chopping distortion, and the adjustment should 

be given to the corresponding volume control knob to decrease the volume, making the 4th 

and the 5th indicator flash. 

  Equalizer/bypass  mode change over switch      Press down the switch for the equalizer 

adjustment mode; Press the switch again to pop up for the direct mode. 

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Summary of Contents for MP6906

Page 1: ...906 MP6912 MP6925 MP6935 Operation Manual Welcome to enter DSPPA PA system Please read the manual carefully before use to facilitate your better application of the equipment D S P PA A c o u s t i c Te c h n o l o g y C o L t d http www DSPPA com ...

Page 2: ...cription of Rear Panel 5 3 Operation Instructions 6 3 1 Example of System Connection 6 3 2 Example of Sound Box Connection 7 3 3 Adjustment Operation of Equalizer 8 3 4 Description of Channel Selection 8 3 5 Description of Volume Control 8 3 6 Microphone and Priority Function 9 4 Precautions for Operation 9 4 1 Precautions for Safety Operation 9 4 2 Precautions for After sales Service 10 5 Packing...

Page 3: ...250 W 6925 and 350 W 6935 The products are designed according to the requirements of the conference hall having no whistle with the tone loud and clear and the volume adjustable The products provide with multiple protection well found function and with the stable operating state and can meet the requirements of conference site for the sound amplification and the background music 1 2 Performance Fe...

Page 4: ...ob To adjust clockwise to increase the volume and to adjust counter clockwise to decrease the volume Microphone 3 volume adjustment knob To adjust clockwise to increase the volume and to adjust counter clockwise to decrease the volume Microphone 2 volume adjustment knob To adjust clockwise to increase the volume and to adjust counter clockwise to decrease the volume Microphone 1 volume adjustment ...

Page 5: ...n of the channel selection switch Total volume adjustment knob Adjust clockwise to increase the volume and adjust counter clockwise to decrease the volume That knob can also be used to control the chime output volume Chime output trigger button Touch it lightly once to trigger the chime output and after the end of playing the tone signs of 1 3 5 ⅰ it will stop automatically 2 2 Description of Rear...

Page 6: ...ophone will then have 24 V phantom power supply and if the switch is turned to OFF the phantom power supply will be turned off Built in cooling blower fan The working voltage is 12 V Power amplifier output common terminal Power amplifier 4 16 Ω rated resistance output terminal Available to connect several loud speakers that is rated resistance but requiring that the total impedance should not be l...

Page 7: ...oose when it connect to the speakers The connecting type COM 70V COM 100V should never be connected to the speakers that should be connect to COM 4 ohm Otherwise there may be danger of damaging the speakers 8Ω 8Ω 16Ω SPEAKER SPEAKER 4 16Ω OUTPUT 70V 100V 4 16Ω COM SPEAKER OUTPUT MATCHING TRANS 70V 100V 4 16Ω COM SPEAKER OUTPUT MATCHING TRANS MATCHING TRANS MATCHING TRANS 70V 100V 4 16Ω COM SPEAKER...

Page 8: ...responding to the AUTO and the playing channel will all be lit If it is required to specify a certain input channel signal as the audio source to be played at present then press SELECTOR button to select the input channel For example to select AUX1 channel input signal as the playing audio source press SELECTOR button untill the indicator corresponding to AUX1 channel is lit the equipment will the...

Page 9: ...ing the movable coil type microphone please turn the change over switch PHANTOM to OFF 4 Precautions for Operation 4 1 Precautions for Safety Operation Please do not insert the power supply plug of the equipment into the power network before connecting properly the system circuitry It should be ensured that the voltage supplied to the equipment be completely meeting the voltage requirements of the...

Page 10: ...the stipulations given in the Operation Manual At any time for the repair gurantee the consumer should present the Card of Guarantee and the sales invoice as a proof The following conditions do not belong to the scope for free of charge service 1 Product damage due to mistaken installation application or handling 2 Product damage due to abnormal condition such as over power voltage or ambient humi...

Page 11: ...mV balance input Wiring 250 50 mV Frequency response 50 Hz 20 KHz 3dB Total harmonic distortion Less than 0 5 1 KHz normal work condition S N ratio A weighted Microphone Greater than 75 dB Wiring Greater than 85 dB 7 band equalizer 64Hz 12dB 160Hz 12 dB 400Hz 12 dB 1KHz 12 dB 2 5KHz 12 dB 6 4KHz 12 dB 15KHz 12 dB Protection function DC overload short circuit Mute function Microphone 1 and chime in...

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