17
Installation
Connection of HELIX DSP.2 to the head unit/car
radio:
Caution: Carrying out the following steps will re-
quire special tools and technical knowledge. In or-
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tions and follow all instructions in this manual (see
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installed by an authorized HELIX dealer.
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Use the correct cable (RCA / cinch cable) to
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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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Important: It is strictly forbidden to use the
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radio.
2. Connecting the highlevel speaker inputs
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nected directly to the loudspeaker outputs of an
OEM or aftermarket radio using appropriate ca-
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We recommend the following channel assign-
ment if a common car radio will be connected to
the signal processor:
Channel A = Front left
Channel B = Front right
Channel C = Rear left
Channel D = Rear right
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speaker inputs. If only two channels will be con-
nected we recommend to use the channels A
and B. Make sure that the polarity is correct. If
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ity it may affect the performance of the signal
processor. If this input is used the remote input
does not need to be connected as the signal
processor will automatically turn on once a
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Attention: It is mandatory to properly adapt
the input sensitivity of the DSP.2 to the sig-
nal source in order to avoid damage to the
signal processor.
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the control 3 (see page 15 item 3; Input Sensi-
tivity). The setting of the control affects both the
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Follow the subsequent steps to perfectly adapt
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audio source by using the control:
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of the HELIX DSP.2 during this setup.
2. Turn on the signal processor.
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4. If the Clipping LED already lights up, you
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trol (page 15 item 3; Input Sensitivity) until
the LED turns off.
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control clockwise until the LED lights up.
Now turn the control counterclockwise until
the Clipping LED turns off again.
If the Highlevel Input is used in combination
with a standard car radio we recommend an in-
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4. Connecting a digital signal source
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tal output you can connect it to the signal pro-
cessor using the appropriate input. In standard
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signal is detected. This function can be deac-
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if you are using the optional remote control. The
automatic turn-on circuit does not work when
the digital input is used. Therefore it is manda-
tory to connect the remote input of the Power
Input. Please note that it is possible to connect
a source to the digital input and the Highlevel
Input or the Line Input at the same time.
Important: The signal of a digital audio source
