HELIX C ONE Manual page 21

Input Mode switch (stereo / mono)
17
number of used inputs.
Stereo: Select this switch setting if both input chan-
nels (A and B) are used. In this mode an optimized
sum signal is generated by the input signals of the
channels A and B.
Mono: In mono operation only input channel A
needs to be connected e.g. the signal source only
Power & Protect LED
18
The power and protect LED indicates the operating
Green:
Yellow:
Flashing yellow:
blown. Please check the fuses and, if necessary,
replace them. They may only be replaced by identi-
Red:
ferent root causes. The HELIX C ONE is equipped
nection. Please check for connecting failures such
as short-circuits or other wrong connections. If the
and has to be sent to your local authorized dealer
Fuses
19
The input fuses are connected in parallel and pro-
tected by a further main fuse located close to the
fuses.
Impedance selection switch
20
By using the impedance selection switch the im-
pedance of the connected loudspeakers (4 Ohms,
2 Ohms or 1 Ohm) has to be selected accordingly.
Series connection:
Parallel connection: Z total = Z / n
(n = amount of loudspeakers; Z = loudspeaker im-
pedance)
Note: If speakers with "3 Ohms" impedance are
used, please choose the position "4 Ohms".
Important: In TwinPower Link operation both am-
page 19, item 7; TwinPower Link switch).
LED switch
21
the LEDs below the fan, which are used as ultra
es. The functionality of the Power & Protect LED
Note: The number of illuminated LEDs depends on
STEREO mode.
22
-
done with control 10 (LPF) and 11 (HPF).
-
X-Over switch
23
-
highpass, fullrange or bandpass mode.
If the X-Over switch
quency for the highpass can be adjusted with the
(11 / HPF).
bypassed.
At switch position BPF a bandpass is created in
-
- any case. This means that the highpass is always
. By adjusting the highpass (switch 22 and
control 11 / HPF) and lowpass (switch 22 and con-
trol 8 / LPF
4,000 Hz can be realized.
-
-
-
(22) and control
21