Nilfisk-ALTO MAC 2.4, MAC 2.3 user manual Rear Panel

Page 6

Signal LED

These signal indicators light up when the output is more than 100mV.

5. Level Control

5

These level controls are used to adjust the output signal level, you'd better adjust them properly to avoid any distortion.

3.2 Rear Panel

11

 

CH-2

 

INPUT

 

 

CONNECTION

 

(+)

SRT

 

LINE

2

1

 

3

T(+)

 

 

 

(GND)

2

1

(-)

R(-)

 

3

 

S(GND)

 

OFF

 

ON

 

LF 30HZ

 

 

FILTER

 

BALANCED 1.15V/20K

 

INPUT

 

 

 

 

 

BRIDGED

 

LINE

 

STEREO

2

1

PARALLEL

 

3

(MONO)

 

OFF

 

ON

 

CLIP LIMT

CH-1

BRIDGED INPUT

 

6

7

CH-1

CH-2

WARNING

 

BREAKER

TO REDUCE THE RISK OF FIRE

 

 

OR ELECTRIC SHOCK, DO NOT

 

 

EXPOSE THIS APPARATUS TO

 

 

RAIN OR MOISTURE.

 

 

SEE INSTRUCTION BEFORE

 

 

USING!

 

BRIDGED

Apparaten skall anslutas till

 

MONO

jordat uttag nar den ansluts

 

 

till ett natverk

CHANNEL 1

CHANNEL 2

 

MODEL

SERIAL

A104

8

10

12

13

9

6. Breaker

6

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 pushing-button will spring up and break the power supply. The power supply will be restored with pushing the switch down again.

7. AC Inlet 7

This connector is meant for the connection of the supplied main cord. 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.

8. Input Connectors

8

These connectors include the balanced XLR servo connectors and 1/4" TRS phone jacks. It is used to connect the input signal.

9. Output Connectors

9

These connectors include the speak-on jacks and binding post terminals, 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!

10. Clip Limit Switch 10

Set this switch at "ON" position, once the output level is above the maximum level, the clip limt begin, which is used to keep fixed output level for protecting apparatus. If the switch is at "OFF", this clip limt function doesn't work.

11. LF 30Hz Filter 11

Setting this switch to "ON" is equal to adding an appropriate low-pass filter in the input circuit, which is used to protect the speaker system from the damage caused by large subsonic frequencies.

12. Mode Selector 12

The MAC 2.2/2.3/2.4 stereo power amplifier presents three operating modes:

-Stereo Mode

In this mode, CHA and CHB operate independently (as a conventional stereo amplifier)

The CHA input signal will be output from the CHA output connector, and CHB input signal will be output from the CHB output connector.

-Parallel Mono Mode

In this mode, CHA input signal will be output from the output connectors of both channels, detail wiring diagram you can refer to chapter 5.

-Bridged Mode

5

Image 6
Contents MAC 2.2/2.3/2.4 Power Supply Safety Related SymbolsImportant Safety Instructions External ConnectionPreface Table of Contents Page Rear Panel Rack Mounting Installation & ConnectionMains Connection Audio ConnectionOperate MAC 2.2/2.3/2.4 in Stereo Mode OperationOperate MAC 2.2/2.3/2.4 in Parallel Mono Mode Channel B Channel aOperate MAC 2.2/2.3/2.4 in Bridged Mode General Application InstructionTechnical Specifications SpecificationsBlock Diagram Warranty Warranty Registration CardSeikaku Technical Group Limited