18
Additional functions
1. Status LED
The
Status LED
indicates the operating mode
of the amplifier.
Green:
Amplifier is ready for operation.
Yellow
/
green
flashing: Overheat control
is active. The overheat control dynamically
limits the output power and allows to always
achieve the maximum output power depend
-
ing on the temperature.
Yellow:
The amplifier is overheated. The in
-
ternal temperature protection shuts down the
device until it reaches a safe temperature lev
-
el again.
Yellow
flashing:
The fuses inside the device
are blown. Please check the fuses and, if
necessary, replace them. They may only be
replaced by identically rated fuses (4 x 30 Am
-
pere) to avoid damage of the amplifier.
Red:
A malfunction has occurred that may
have different root causes. The HELIX
P ONE MK2 is equipped with protection
circuits against over- and undervoltage,
short-circuit on loudspeakers and reverse
connection. Please check for connecting
failures such as short-circuits or other wrong
connections. If the amplifier does not turn on
after that it is defective and has to be sent to
your local authorized dealer for repair service.
2. Clipping LED
Normally the
Clipping LED
is off and only
lights up if the input stage is overdriven.
On (
red
):
One of the signal inputs is over
-
driven. Reduce the input sensitivity
using the
gain control
until the LED
goes out. How to reduce the input
sensitivity is described on page 16
point 6.
