HELIX V EIGHT DSP Bedienungsanleitung Seite 21

the battery to the amplifier power terminals
needs to have an inline fuse at a distance of
less than 12 inches (30 cm) from the battery.
The value of the fuse is calculated from the
maximum total current draw of the whole car
audio system (V EIGHT DSP = max. 60 A RMS
at 12 V power supply). If your power wires are
short (less than 1 m / 40") then a wire gauge of
16 mm² / AWG 6 will be sufficient. In all other
cases we strongly recommend gauges of 25 -
35 mm² / AWG 4 – 2!
The ground cable (same gauge as the +12 V
wire) should be connected to a common ground
reference point (this is located where the neg-
ative terminal of the battery is grounded to the
metal body of the vehicle), or to a prepared
metal location on the vehicle chassis, i.e. an
area which has been cleaned of all paint res-
idues.
6. Connecting the remote input
The remote input (REM) has to be connected to
the radio remote output if the amplifiers pre-am-
plifier inputs or the Optical Input are solely used
as signal inputs. We do not recommend con-
trolling the remote input via the ignition switch
to avoid pop noise during turn on/off.
If the Highlevel Input is used this input does not
need to be connected as long as the car radio
has BTL output stages.
7. Configuration of the remote input
The V EIGHT DSP will be turned on automati-
cally if the Highlevel Input is used or if a signal
is applied to the remote input (REM) terminal.
The "Auto Remote" switch allows to deactivate
the automatic turn-on feature.
The feature should be deactivated if there are
e.g. disturbing noises while switching on/off the
amplifier.
Note: If the automatic turn-on function is deac-
tivated it is mandatory to use the remote input
terminal to power up the amplifier! The highlevel
signal will be ignored in this case.
Note: The activation of the amplifier via speaker
input is activated ex works.
To deactivate the automatic turn-on feature you
have to open the device and change the posi-
tion of the "Auto Remote" switch.
Therefore dismantle the side panel (where the
USB input is located) by removing the two Phil-
lips and two allen screws.
Now you can pull out the bottom plate and get
access to the switch. The switch is located near
by the "Balanced Dual Audio Transformer" (see
marking in the following picture).
On: Activation via highlevel speaker input is
enabled (ex works).
Off: Activation via highlevel speaker input is
disabled.
8. Configuration of the internal DSP
The general amplifier settings should be con-
ducted with the DSP PC-Tool software before
using the amplifier for the first time.
Ignoring this advice may result in damaging
the connected speakers / amplifiers. Especially
if the V EIGHT DSP will be used to drive fully
active speaker systems, a wrong setup can de-
stroy your tweeters right away.
Information about connecting the V EIGHT DSP
to a computer can be found on page 24.
9. Connecting the loudspeaker outputs
The loudspeaker outputs can be connected di-
rectly to the wires of the loudspeakers. Never
connect any of the loudspeaker cables with the
chassis ground as this will damage your ampli-
fier and your speakers.
Ensure that the loudspeakers are correctly con-
nected (in phase), i.e. plus to plus and minus
to minus. Exchanging plus and minus causes a
total loss of bass reproduction. The plus pole is
indicated on most speakers. The impedance of
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