22
Caution:
7RDYRLGDORVVRIJDLQPDNHVXUHWKDWWKH
FURVVRYHUIUHTXHQFLHVRIWKHKLJKDQGORZSDVV¿O
-
WHUV GR KDYH DQ LQWHUYDO RI DW OHDVW WZR RFWDYHV
when generating a bandpass.
That means if the lowpass signal is adjusted to
320 Hz the highpass should be adjusted to 80 Hz
RUOHVVRQHRFWDYH GRXEOHGIUHTXHQF\RUKDOYHG
frequency). If a subwoofer is connected we recom-
mend to use the highpass control (control 11 /
HPF
)
DVYDULDEOHVXEVRQLFORZIUHTXHQF\KLJKSDVV¿OWHU
or turn it counterclockwise to 15 Hz to get a sub-
VRQLF¿OWHU
24
HDM slot
7KH+'0VORWLVXVHGWRPRXQWWKHRSWLRQDOO\DYDLO
-
able HELIX Digital Input Module HDM 1.
7KH PRGXOH H[WHQGV WKH DPSOL¿HU ZLWK DQ RSWLFDO
digital input in SPDIF format including
SPDIF Direct
In switch
.
Thanks to the
SPDIF Direct In switch
the input stag-
es of the C ONE can be bypassed and allows to
directly route the signals of the digital input from the
LQWHJUDWHG'$FRQYHUWHUWRWKHLQWHUQDOSRZHUVWDJH
Further information about the module can be found
on page 27.
Connection of HELIX C ONE to the head unit /
car radio:
Caution:
Carrying out the following steps will re-
quire special tools and technical knowledge. In or-
GHUWRDYRLGFRQQHFWLRQPLVWDNHVDQGRUGDPDJH
DVN\RXUGHDOHUIRUDVVLVWDQFHLI\RXKDYHDQ\TXHV
tions and follow all instructions in this manual (see
page 16). It is recommended that this unit will be
installed by an authorized HELIX dealer.
1. Connecting the lowlevel line inputs
Use the correct cable (RCA / Cinch cable) to
FRQQHFWWKHVHLQSXWVWRWKHORZOHYHOOLQHRXWSXWV
of your head unit / car radio. It is not mandato-
U\ WR XVH ERWK ORZOHYHO OLQH LQSXWV ,I RQO\ RQH
channel will be connected use channel A and
set the
Input Mode switch
to “MONO”.
When both channels will be used please choose
switch position “STEREO” (see page 21,
item 17;
Input Mode switch
).
2. Connecting a digital signal source
,I \RX KDYH LQVWDOOHG WKH +(/,; 'LJLWDO ,QSXW
'0DQGKDYHDVLJQDOVRXUFHZLWK
an optical digital output you can connect it di-
UHFWO\WRWKHDPSOL¿HUXVLQJWKHDSSURSULDWHLQ
-
put.
Important:
The signal of a digital audio source
normally does not contain any information
DERXWWKHYROXPHOHYHO.HHSLQPLQGWKDWWKLV
ZLOOOHDGWRIXOOOHYHORQWKHRXWSX(/,;
&21(7KLVPD\FDXVHVHYHUHGDPDJHWR\RXU
speakers. We strongly recommend to only use
YROXPHFRQWUROOHGDXGLRVRXUFHV
Information:
The C ONE can only handle un-
compressed digital stereo signals in PCM for-
mat with a sample rate between 28 kHz and
96 kHz and no MP3- or Dolby-coded signals.
&RQ¿JXUDWLRQRIWKHGLJLWDOVLJQDOLQSXW
,I \RX KDYH LQVWDOOHG WKH +(/,; 'LJLWDO ,QSXW
Module HDM 1 and connected a digital signal
VRXUFH\RXKDYHWKHSRVVLELOLW\WRURXWHWKHGLJ
-
ital signal directly and loss-free from the inte-
JUDWHG'$FRQYHUWHUWRWKHLQWHUQDOSRZHUDP
-
SOL¿HU7RDFWLYDWHWKHGLUHFWVLJQDOURXWLQJ\RX
KDYHWRFKDQJHWKHSRVLWLRQRIWKH
SPDIF Direct
Initial start-up and functions
Installation
