Safety Instruction; Main Features; Precaution; Front Panel - Executive Audio ALPHA Série Manuel D'utilisation

1. Safety Instructions
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the
presence of un-insulated "dangerous voltage "within the product's enclosure that may be of sufficient
magnitude to constitute a risk to persons.
The exclamation point, within an equilateral triangle, is intended to alert the user to the presence of
important operating and maintenance (servicing) instructions in the literature accompanying the
appliance.
- Caution: Avoid the risk of electric shock, do not remove the cover. No user serviceable parts inside.
- To prevent fire or shock hazard, do not expose the unit to rain or moisture. Do not place metal objects or
spill liquid inside the unit as electric shock or malfunction may result.
- Don't cover any ventilation slots as this may result in overheating. Always install the unit in a well ventilated
place. Avoid presence of heat sources and dusty or humid environments.
- Do not repair the unit by yourself. Refer any servicing or repair work to qualified personnel only.

2. Main features

Professional power amplifiers with advanced switch mode power supply technology for higher performance.
Ideal for mobile performances, DJ, Bar, Meeting Room, hotels and restaurants etc.
The amplifier features:
Soft start up
Short circuit protection
DC fault protection
High temperature protection
Overloaded protection
Connection mode : Stereo, bridge, parallel
XLR, 6.3 Phone Jack Input connectors and Speakon output connectors.
Power, Limit, Protect, Stereo, BTL (Bridge), & PAR (parallel) indicators.

3. Precaution

- Make sure the mains power of the unit is turned off before installation.
- Make sure the mains supply matches to the unit's rated voltage.
- Use an adequate power source; do not turn on several amplifiers at the same time.
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- Make sure all the connectors are well connected in their indicated position firmly.
- Before turning on the power, please check carefully if the mode switch is in its correct position – stereo,
bridge, or parallel.
- Set the input level controls to the left (0) before you turn on the power.
- If the amplifier does not power-up properly, turn it off immediately. Do not fix it yourself; contact your dealer
for service.

4. Front panel

ALPHA 01
ALPHA 02
ALPHA 03
ALPHA 04
For the front panels of the Horizon series amplifier, all the models have the same functions knobs and led
indicators. So this manual uses the Horizon to insulate.
) POWER SWITCH
1
Press this button to start the operation.
2) POWER LED (GREEN)
This LED illuminates when power connects and the power switch open.
3) POWER PROTECTS LED (YELLOW)
This LED illuminates when you turn on the power, it takes about 3~ 4 seconds to complete the function of soft
start-up. Soon after that you will hear a "click" to indicate the amplifier is ready to work.
4/5) GAIN CONTROL (CHANNEL A & CHANNEL B)
Adjust the desired volume here.
6/7) Sign LED (GREEN)
These LEDS illuminate when sign input.
8/9) LIMIT LED (RED)
This LED illuminates when the input signal is too large or the power amplifier output over current.
10) PROTECT LED (YELLOW)
The LED will be on / blinking under the following 3 conditions:
A. During first few seconds after switching on/switching off the amplifier.
B. When the temperature of the power stage becomes too high.
C. In the case of a technical defect: DC protection, overload protection, short circuit protection, input limit
protection, VHF protection, dual variable speed Fans.
11）Bridge LED （BLUE）
This illuminates in bridged mode.
12）STR/Stereo LED （BLUE）
This illuminates in stereo mode.
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