Dayton MA1240a Manuel D’Utilisation

(2)

Dayton Audio amplifiers are designed to help deliver a great audio experience.  However, where you place the amplifier can 

have a large effect on the performance you receive, and the life of the unit.  If you are not rack-mounting the amplifier, posi-

tion it with all feet resting on a solid level surface.  Be sure that the amplifier is in a well-ventilated area and 

DO NOT install 

the amplifier near a source of heat or in an extremely humid or wet location. 

CAUTION: All connections and switching must be done with the amplifier’s power switch positioned to ‘Off’.  Connect the 

power cord last to be sure that the amplifier is off during all of your connections and set up.

• 12 channels (6 stereo zones) in one convenient enclosure 
• Stable Class AB design delivers superior audiophile sound 
  quality and performance
• Independent and bus inputs provides unparalleled flexibility
• Bridgeable channel outputs provide additional power 
  when needed
• Independent channel gain controls allow the output of 
  each speaker to be perfectly matched
• Switchable 115/230V input voltage

• Manual, auto, or triggered on/off for integration into any 
  automated system
• Multi-stage protection circuitry for reliability and easy 
  troubleshooting of audio system
• Installer-friendly setup and connections
• Can be converted easily between rack-mount and 
  tabletop configurations
• Heavy-duty steel chassis with brushed aluminum faceplate

Front panel pushbutton power switch turns the amplifier 

on and off. When the switch is on and the indicator LED 

is red, the amplifier is in standby mode. The remote turn 

on switch (located on the rear) is either in the “trigger” 

or “auto” position. When the LED is blue, the amplifier is 

fully active. The master power switch will turn off the am-

plifier no matter which power mode has been selected. 

Each  pair  of  channels  or  zones  has  a  bi-color  LED  to               

indicate its operational status. These indicators provide quick 

and easy troubleshooting of the system. If the circuitry deter-

mines that a channel must be shut down due to excessive 

heat or low impedance (a short), only the channels that are 

affected will be turned off causing the zone LED to turn red. 

The remaining zones will continue to operate and maintain a 

blue LED status. Once the condition has been corrected for 

the zone in question, the status LED will return to blue.  

Note: When the power LED is red and the zone status LEDS 

are not lit (off), indicates the unit is in standby mode.