2

Controls and Functions

■Fr ont Panel

TEMP
PROTECTION
POWER
ON OFF
AB
CLIP
SIGNAL
61
23 4
5
–dB∞ 0∞ 0
40
30
20 15
10
3
6
25
40
30
20 15
10
3
6
25
EEEngine
1POWER switch and indicator
This is the main POWER switch. Press to power ON the
amplifier. Press again to power OFF. The POWER
indicator lights up when the amplifier is powered ON.
2TEMP indicator
When the temperature of the heat sink exceeds 85
degrees Celsius, this indicator will light red.
3PROTECTION indicator
This red LED indicator lights up for approximately 3
seconds when the amplifier is powered ON, indicating
that the soft-start protection system is working. No
sound is output during soft-start up. If one of the protec-
tion systems is activated during normal use, this indica-
tor lights up and no sound is output. The speaker system
is actually disconnected from the amplifier outputs when
this indicator lights up. The protection systems are
activated when overheating occurs or a DC voltage is
present at the amplifier outputs. If the problem is cor-
rected, the protection systems deactivate automatically,
this indicator goes out, and normal amplifier operation is
resumed.
4CLIP indicators
These red LED indicators light up when the respective
channel’s output signal distortion exceeds 1% (i.e. clip-
ping). Output signal clipping is usually due to excessive
input signal levels.
5SIGNAL indicators
These green LED indicators light up when the respective
channel’s output signal exceeds 2 Vrms. This is equiva-
lent to 1/2 watt into 8Ω, 1 W into 4Ω.
6Volume controls
These volume controls allow you to adjust the volume
level in 31 steps in the range between –∞ dB and 0 dB.
To fix the volume setting by protecting the controls,
install the included security cover over the controls and
tighten the screws in the holes as shown below.
–dB∞ 0∞ 0
40
30
20 15
10
3
6
25
40
30
20 15
10
3
6
25