Trouble Shooting; Specification - Executive Audio ALPHA Série Manuel D'utilisation

10. Trouble shooting

You can check some operation problems as mentioned below first before asking for help.
Problem Problem cause(s)
4. Power did not turn
4.
on
No response 5. Loose connection of 5.
when power the power cord
on 6.
6. blown fuse
5.
6. No signal input
7. Loose connection of
6.
the speaker or
damaged speaker
7.
8. Wrong connection
No sound
8.
9. Thermal protection
10. The low cut switch is 5. Ensure that the low cut switch is positioned either completely to
not at the right
position
1. The signal input level
(intensity) is set at 1. Adjust the signal input level to the appropriate intensity
Inadequate
minimum
output
2. Low input voltage of
volume
2. a. Increase the input voltage of the signal source equipment
the signal source
equipment
Suggested remedy
Turn on the power.
Make sure the power cord is connected firmly to the mains
supply before turn on the power of amplifier.
Turn off the power, and then check the fuse on the rear panel
or the fuse on the power amplification PCB. Replace the fuse
with same type only if the fuse is blown.
Connect the signal source equipment to the amplifier, and then
turn on the power.
Make sure the speaker is well connected. Check if the speaker
is in good condition.
Make sure the connection between amplifier and speaker is
correct. Please refer to the point 8 Connection (signal output)
for more information.
Avoid overloading the amplifier for a long time, or working in a
bad ventilation area. Check if the fans work properly or the
ventilation slots are clear of dust.
the left or right side otherwise no sound will be outputted.
b. Adjust the input sensitivity of the amplifier.
16
11. Specifications
Model No. ALPHA 01
Output Power Stereo 8Ω 130W×2
1KHZ Stereo 4Ω 200W×2
Bridge 8Ω 400W
THD+N
IMD
Frequency Response
Input Sensitivity
S/N ratio
(A Weighted RMS)
Crosstalk at rated power output
(8Ω1KHz)
Phase Response
Damping Factor >80( @8Ω )
Protection
Indicators
Connectors
Slew rate
Power supply
Dimension(W×D×H) 483×235×44mm
Weight 4.1Kg
ALPHA 02 ALPHA 03
200W×2 250W×2
300W×2 400W×2
600W 800W
≤0.1% (Stereo 8Ω )
＜0.1% (Stereo 8Ω )
20Hz~20KHz +0dB, -1.0dB
0.775V/1.0V/1.44V (Stereo 8Ω)
>100dB (Stereo 8Ω )
>65dB (Stereo 8Ω )
+15°, -15°(Stereo 8Ω )
>150( @8Ω ) >150( @8Ω )
Soft start up, Short CircuitOverloaded, Overheat
DC fault, AC line fuse Limit
3 LED power， signal ，limit protection
IN: 1/4( 6.3) Stereo Phone-Jack / XLR female
OUT: 3×Speakon
>20V/ms
230V/50Hz
483×323×44mm 483×403×44mm
6.4Kg
17
ALPHA 04
340W×2
550W×2
1100W
8.3Kg