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Thank you for purchasing the Dayton Audio

MA1240a makes it the perfect choice for almost every type of custom multi-room audio system. Its tabletop or rack-

mountable design allows it to be integrated easily into high-end whole house audio systems.

FEATURES:

• 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

INSTALLATION:

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.

FRONT PANEL:

1. Master Power Switch / Indicator LED

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.

2. Zone Status Indicators

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

All manuals and user guides at all-guides.com

MA1240a Twelve Channel Multi-Zone Amplifier. The versatility of the

(2)

• 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

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 stand by mode.