Installation
Connection of HELIX P SIX DSP MK2 to the head
unit/car radio:
Caution: Carrying out the following steps will re-
quire special tools and technical knowledge. In or-
der to avoid connection mistakes and / or damage,
ask your dealer for assistance if you have any ques-
tions and follow all instructions in this manual (see
page 13). It is recommended that this unit will be
installed by an authorized HELIX dealer.
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Use the correct cable (RCA / cinch cable) to
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lowlev el / cinch outputs of your car radio. Each
input can be assigned to any output using the
DSP PC-Tool software. The automatic turn-on
circuit does not work when using the pre-ampli-
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has to be connected to activate the HELIX
P SIX DSP MK2.
Important: It is strictly forbidden to use the
Highlevel Input DQG SUHDPSOL¿HU LQSXWV Line
Input) at the same time. This may cause severe
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radio.
2. Connecting the highlevel speaker inputs
The highlevel loudspeaker inputs can be con-
nected directly to the loudspeaker outputs of an
OEM or aftermarket radio using appropriate ca-
bles (loudspeaker cables with 1 mm² / AWG 18
max.). It is not mandatory to use all speaker
inputs. Make sure that the polarity is correct. If
one or more connections have reversed polarity
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this input is used the remote input (REM) does
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automatically turn on once a loudspeaker signal
is received.
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Attention: It is mandatory to properly adapt the
input sensitivity of the P SIX DSP MK2 to the
signal source in order to avoid damage to the
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If you want to change the Input Sensitivity use
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the potentiometers affects both the lowlevel and
the highlevel inputs!
If the ex factory sensitivity range of the low-
level input (2 - 4 Volts) resp. highlevel input
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to change it internally by repositioning jumpers.
In that case you have to open the device. Re-
move the ten Phillips head screws of the bot-
tom plate to get access to the jumpers. The long
jumper (
Jumper A, 16-pins) affects the channels
A
- D and the short jumper (Jumper B, 8-pins)
the channels E and F
. Inside the device there
are two plug positions (A1 and A2) for Jumper A
and three (B1, B2 and B3) for Jumper B.
The different plug positions are explained on
page 20:
19