HELIX V EIGHTEEN DSP Bedienungsanleitung Seite 24

Hardware configuration
2.8 Volts for all channels. But it is possible
to optimally adapt the input sensitivity to the
signal source using the DSP PC-Tool software
(see page 26, point 8).
The automatic turn-on circuit does not work
when using the pre-amplifier inputs. In this case
the remote input (REM) has to be connected
to activate the HELIX V EIGHTEEN DSP.
Important: It is strictly forbidden to use the
highlevel speaker input and lowlevel line input
of an individual channel at the same time as
this may cause severe damage to the con-
nected signal source. Nevertheless it is pos-
sible to use the highlevel input of one channel
and the lowlevel line input of another channel
simultaneously.
3. Connecting the highlevel speaker inputs
The 18 highlevel loudspeaker inputs can be
connected directly to the loudspeaker out-
puts of an OEM, aftermarket radio or factory
installed amplifier using appropriate cables
(loudspeaker cables with 1 mm² / AWG 18
max.).
We recommend the following channel assign-
ment if a common car radio will be connected
to the amplifier:
Channel A = Front left
Channel B = Front right
Channel C = Rear left
Channel D = Rear right
Actually it is not mandatory to use all high level
speaker inputs. If only two channels will be
connected we recommend to use the chan-
nels A and B. Make sure that the polarity is
correct. If one or more connections have re-
versed polarity it may affect the performance
of the amplifier. If this input is used the remote
input (REM) does not need to be connected
as the amplifier will automatically turn on once
a loudspeaker signal is received.
Input sensitivity is factory-set to 11.3 Volts for
all channels. It is possible to optimally adapt
the input sensitivity to the signal source us-
ing the DSP PC-Tool Software (see page 26,
point 8).
Attention: Solely use the supplied connection
cables with the black, 12-pin plug and flying
leads for connecting the highlevel inputs (see
page 22, fig. 1)! For easier configuration, the
24
cables are labeled accordingly.
Important: It is strictly forbidden to use the
high level speaker input and lowlevel line input
of an individual channel at the same time as
this may cause severe damage to the con-
nected signal source.
Nevertheless it is possible to use the highlevel
speaker input of one channel and the lowlevel
line input of another channel simultaneously.
4. Connecting a digital signal source in
SPDIF format
If you have a signal source with an optical digi-
tal output you can connect it to the amplifier
using the appropriate input. The sampling rate
must be between 12 and 96 kHz. The input
signal is automatically adapted to the internal
sample rate.
In standard configuration the manual activa-
tion via an optional remote control is config-
ured. Alternatively you can activate the auto-
matic turn-on feature in the DCM menu of the
DSP PC-Tool software.
The automatic turn-on circuit does not work
when the digital input is used. Therefore it is
mandatory to connect the remote input (REM).
Important: The signal of a digital audio
source normally does not contain any informa-
tion about the volume level. Keep in mind that
this will lead to full level on the outputs of the
HELIX V EIGHTEEN DSP and your connect-
ed amplifiers. This may cause severe damage
to your speakers. We strongly recommend to
use an optional remote control for adjusting
the volume level of the digital signal input!
Note: The HELIX V EIGHTEEN DSP can only
handle uncompressed digital stereo signals
in PCM format with a sample rate between
12 kHz and 96 kHz and no MP3- or Dol-
by-coded digital audio stream!
5. Configuration of the remote input
The V EIGHTEEN DSP will be turned on
automatically if the highlevel speaker input
(Highlevel In) is used or if a signal is applied
to the remote input terminal (REM). The Auto
Remote switch allows to deactivate the auto-
matic turn-on feature of the highlevel speaker
inputs. The feature should be deactivated if
there are e.g. noises while switching on / off