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-
GHUWRDYRLGFRQQHFWLRQPLVWDNHVDQGRUGDPDJH
DVN\RXUGHDOHUIRUDVVLVWDQFHLI\RXKDYHDQ\TXHV
tions and follow all instructions in this manual (see
SDJH,WLVUHFRPPHQGHGWKDWWKHGHYLFHZLOOEH
installed by an authorized HELIX dealer.
&RQQHFWLQJWKHSUHDPSOL¿HULQSXWV
Use the correct cable (RCA / cinch cable) to
FRQQHFW WKHVH LQSXWV WR WKH SUHDPSOL¿HU
ORZOHYHOFLQFKRXWSXWVRI\RXUFDUUDGLR(DFK
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-
¿HULQSXWV,QWKLVFDVHWKHUHPRWHLQSXWKDVWR
EHFRQQHFWHGWRDFWL(/,;'63
Important:
It is strictly forbidden to use the
Highlevel Input
DQG SUHDPSOL¿HU LQSXWV
Line
Input
DWWKHVDPHWLPH7KLVPD\FDXVHVHYHUH
GDPDJHWRWKHSUHDPSOL¿HURXWSXWVRI\RXUFDU
radio.
2. Connecting the highlevel speaker inputs
7KH KLJKOHYHO ORXGVSHDNHU LQSXWV FDQ EH FRQ
-
nected directly to the loudspeaker outputs of an
OEM or aftermarket radio using appropriate ca-
EOHVORXGVSHDNHUFDEOHVZLWKPPð$:*
PD[
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
$FWXDOO\LWLVQRWPDQGDWRU\WRXVHDOOKLJKOHYHO
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
RQHRUPRUHFRQQHFWLRQVKDYHUHYHUVHGSRODU
-
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
ORXGVSHDNHUVLJQDOLVUHFHLYHG
$GMXVWPHQWRIWKHLQSXWVHQVLWLYLW\
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.
,I\RXZDQWWRFKDQJHWKHLQSXWVHQVLWLYLW\XVH
the control 3 (see page 15 item 3;
Input Sensi-
tivity
). The setting of the control affects both the
ORZOHYHODQGWKHKLJKOHYHOLQSXWV
Follow the subsequent steps to perfectly adapt
WKH VLJQDO SURFHVVRUV LQSXW VHQVLWLYLW\ WR \RXU
audio source by using the control:
'RQµWFRQQHFWDQ\DPSOL¿HUVWRWKHRXWSXWV
of the HELIX DSP.2 during this setup.
2. Turn on the signal processor.
$GMXVW WKH YROXPH RI \RXU UDGLR WR DSSUR[
RI WKH PD[ YROXPH DQG SOD\EDFN D
N+]IXOOVFDOHWHVWWRQHG%YLD&'GULYH
4. If the
Clipping LED
already lights up, you
KDYHWRUHGXFHWKHLQSXWVHQVLWLYLW\YLDFRQ
-
trol (page 15 item 3;
Input Sensitivity
) until
the LED turns off.
,QFUHDVHWKHLQSXWVHQVLWLYLW\E\WXUQLQJWKH
control clockwise until the LED lights up.
Now turn the control counterclockwise until
the
Clipping LED
turns off again.
If the
Highlevel Input
is used in combination
with a standard car radio we recommend an in-
SXW VHQVLWLYLW\ RI URXJKO\ 9ROWV )RU WKLV SXU
-
SRVHWXUQWKHFRQWUROIURPPD[&&:SRVLWLRQ
WRR¶FORFNSRVLWLRQ
4. Connecting a digital signal source
,I\RXKDYHDVLJQDOVRXUFHZLWKDQRSWLFDOGLJL
tal output you can connect it to the signal pro-
cessor using the appropriate input. In standard
FRQ¿JXUDWLRQ WKH +(/,; '63 DXWRPDWLFDOO\
DFWLYDWHVWKHXVHGGLJLWDOLQSXWLIDGLJLWDODXGLR
signal is detected. This function can be deac-
WLYDWHGYLDWKH'633&7RROVRIWZDUH$OWHUQD
-
WLYHO\\RXFDQPDQXDOO\DFWLYDWHWKHGLJLWDOLQSXW
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
