Alto MC250.4, Руководство пользователя

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Output Terminal
You can output the powered signal by the specific output connectors according to the actual application circumstance.
Caution: turn off the unit before connecting the output connectors so as to avoid any electric shock!
Breaker
This switch works as fuse for protecting the unit from damage. When the unit is overloaded or the temperature
inside the unit is too high, this push-button will spring up and break the power supply. The power supply will be
restored with pushing this switch again.
AC-Inlet
This standard IEC receptacle is supplied to allow to connect your MC250.4 to mains via the supplied power cord.
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4. Installation
4.1 Mains connection
Do not insert the power cord into this unit until voltage has been correctly set. Do not plug the power cord into the
mains until the voltage has been correctly set. Please ensure that the MC250.4 professional power amplifi ris
supplied with the correct voltage before turning on this unit. If you can't power up this unit while turning on the mains
switch (1), check the Breaker (14) on the rear panel fist, maybe it is pressed to reset. Otherwise, contact the
technician or qualified personnel for any service.
Caution: To reduce the risk of electric shock, do not perform any servicing other than contained in this manual unless
you are qualified to do so. Please turn off this unit before any installation and connection, esp. when you connect
your unit into the sound system. This is important to prevent damage to the unit itself as well as other consequent
speaker system. This is important to prevent damage to the unit itself as well as other consequent speaker system.
The mains connection of the MC 250.4 professional power amplifier is made by using the enclosed power cord and
a standard IEC receptacle, and it meets all of the international safety certification requirement.
- function selector
Clip limit :
set these small dip switches of 1(ON) and 10(ON) at "ON" position , then the clip limit of channel 1
and channel 2 has been working; once the output level is reach or exceed the level that is predetermined by the
threshold setting selected, it may result in the undesirable distortion .in order to avoid the distortion, the clip begins;
if the dip switch are set at "OFF", the clip limit doesn't work.
CLIP LIMIT
ON
OFF
ON
OFF
2 3 4 5 6 7 8 9
Filter: this unit are equipped with two low cut filter eliminating unwanted low- frequency signals like rumble noise:
75Hz and 35Hz. You will activate 35Hz low cut filter by Turning these two small dip switches of 2 and 9 up to the
top, and turn these two small dip switches down, you will choose 75Hz low cut filter.
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14
13
35Hz
FIL
TER
FIL
TER
OFF
FIL
TER
OFF
35Hz
FIL
TER
FIL
TER
ON
75Hz
FIL
TER
75Hz
FIL
TER
FIL
TER
ON
1 4 5 6 7
10