DAPAudio MPXA-80, Инструкция по эксплуатации

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10
Operation
Installation
Remove all packing materials from the MXPA-80. Check that all foam and plastic padding is removed.
Secure the equipment into a 19" rack. Connect all cables.
Set Up and Operation
Before plugging the unit in, always make sure that the power supply matches the product specification
voltage. Do not attempt to operate a 115V specification product on 230V power, or vice versa.
Before powering up the first time, make sure the AC-selector switch is set to the proper voltage.
Damage caused by connecting the amplifier to improper AC voltage is not covered by any warranty.
NOTE: Always turn off and disconnect the amplifier from mains voltage before making audio
connections. Also, as an extra precaution, have the attenuators turned down during power -up.
Dip switch settings channel 1-3
The MXPA-80 has 3 balanced combo inputs. You can use these for connecting either jack or XLR cables.
Each input can be customized using 4 dipswitches. You can select 4 options:
1. Line/ Mic: Allows you to set the input impedance/ sensitivity to either Line or Microphone level (Line =
on, microphone = off).
2. Phase: Allows you to reverse the polarity of the input (on is reverse polarity).
3. High pass filter: In on position a highpass filter will be activated. The cutoff frequency is 250Hz. The
highpass function can be used to improve speech quality in difficult acoustic situations.
4. 24V phantom power: In on position the input will provide 24V phantom power for a condenser
microphone.
Dip switch settings channel 4
The MXPA-80 has 2 sets of stereo unbalanced RCA inputs. You can use these for connecting line level
equipment. Each input can be customized using 4 dipswitches. You can select 4 options:
1. Aux 1/2: In off position input 1 is selected, in on position input 2 is selected.
2. -10dB pad enable: Allows you to attenuate the input with -10dB (switch in off position).
3. High pass filter: In on position a highpass filter will be activated. The cutoff frequency is 250Hz. The
highpass function can be used to improve speech quality in difficult acoustic situations.
4. 0dBu/ 0dBv: In on position the input sensitivity is 0,775Vrms. In off position the input sensitivity is set to
1Vrms.
Connecting Inputs.
Use the XLR input connectors on the rear to supply audio signals to your DAP Audio MXPA- Series
amplifier. The connectors accept balanced and unbalanced audio connections. (The MPA- Series
amplifiers are configured standard with "Pin 2 hot" on XLR inputs. For more Information, see the section on
Connection cables page 14.
Operating the Tuner
1. Selecting a station
Use the BAND button to select either AM or FM band. Press the UP or DOWN button to tune stepwise.
Pressing the UP or DOWN button for more than 1second will let you speed up the searching.
2. Selecting a preset.
Use the BAND button to select either AM or FM band.
Press M1 to M5 to recall preset M1-M5.
3. Storing a station in Memory
Press the MEMO button. In the display the symbols preset number changes into a line and starts blinking.
Now press button M1- M5 to store the preset in the desired memory location.