15
1
Line Input
FKDQQHO SUHDPSOL¿HU LQSXW WR FRQQHFW VLJQDO
VRXUFHV VXFK DV UDGLRV ,QSXW VHQVLWLYLW\ LV
IDFWRU\VHW WR 9ROWV PD[LPXP &&: SRVLWLRQ ,W
LV SRVVLEOH WR YDU\ WKH VHQVLWLYLW\ EHWZHHQ DQG
9ROWV
2
Clipping LED
7KLV/('OLJKWVXSUHGLIRQHRIWKHVL[
Line Inputs
or
Highlevel Inputs
LVRYHUGULYHQ7KH/('KDVQR
IXQFWLRQLIWKHGHYLFHLVIHGZLWKGLJLWDOLQSXWVLJQDOV
,IWKLV/('OLJKWVXSUHGXFHWKHLQSXWVHQVLWLYLW\E\
using the control 3 (
Input Sensitivity
) until the LED
goes out.
3
Input Sensitivity
7KLVFRQWUROLVXVHGWRDGDSWWKHLQSXWVHQVLWLYLW\RI
WKHORZDQGKLJKOHYHOLQSXWVWRWKHRXWSXWYROWDJH
RIWKHFRQQHFWHGVLJQDOVRXUFH7KLVLVQRWDYROXPH
control, it´s only for adjusting the signal processors
gain. The control range of the RCA /
Line Input
is
9ROWVDQG9ROWVIRUWKH
Highlevel Input
.
Attention:
It is mandatory to properly adapt the in-
SXWVHQVLWLYLW\RIWKH'63WRWKHVLJQDOVRXUFHLQ
RUGHUWRDYRLGGDPDJHWRWKHVLJQDOSURFHVVRU
If the
Highlevel Input
is used in combination with a
VWDQGDUGFDUUDGLRZHUHFRPPHQGDQLQSXWVHQVLWLY
-
LW\ RI URXJKO\ 9ROWV )RU WKLV SXUSRVH WXUQ WKH
FRQWURO IURP PD[ &&: SRVLWLRQ WR R¶FORFN SRVL
-
tion.
4
Highlevel Input
FKDQQHO KLJKOHYHO ORXGVSHDNHU LQSXW WR FRQQHFW
the signal processor directly to loudspeaker outputs
RI2(0DIWHUPDUNHWUDGLRVRU2(0DPSOL¿HUVWKDW
GRQRWKDYHDQ\SUHDPSOL¿HURXWSXWV,QSXWVHQVL
-
WLYLW\LVIDFWRU\VHWWR9ROWVPD[LPXP&&:SR
-
VLWLRQ,WLVSRVVLEOHWRYDU\WKHVHQVLWLYLW\EHWZHHQ
DQG9ROWVZLWKFRQWURO
Input Sensitivity
).
Attention:
Solely use the pluggable screw-terminal
IRUWKHKLJKOHYHOFRQQHFWRUZKLFKLVLQFOXGHGLQGH
-
OLYHU\ RU DQ RSWLRQDO DYDLODEOH FDEOH KDUQHVV IURP
the HELIX accessory assortment!
Important:
It is strictly forbidden to use the
High-
level Input
DQG SUHDPSOL¿HU LQSXWV
Line Input
) at
WKHVDPHWLPH7KLVPD\FDXVHVHYHUHGDPDJHWR
WKHSUHDPSOL¿HURXWSXWVRI\RXUFDUUDGLR
5
Optical Input
Optical input in SPDIF format for connecting signal
sources with a digital audio output. The sampling
rate of this input must be between 12 and 96 kHz.
The input signal is automatically adapted to the in-
WHUQDOVDPSOHUDWH,QRUGHUWRFRQWUROWKHYROXPHRI
this input, we recommend to use an optional remote
control.
Notice:
This signal processor can only handle ste-
reo input signals and no Dolby-coded digital audio
stream.
6
Power Input
This input is used for connecting the signal pro-
FHVVRU WR WKH SRZHU VXSSO\ RI WKH YHKLFOH DQG IRU
UHPRWHLQRXW,IWKHKLJKOHYHOORXGVSHDNHULQSXWV
are used the remote input can be left unconnected.
The remote output is used for turning on/off ampli-
¿HUVWKDWDUHFRQQHFWHGWRWKH
Line Outputs
of the
HELIX DSP.2. Connect this remote output to the
UHPRWH LQSXWV RI \RXU DPSOL¿HUV7KLV LV HVVHQWLDO
WRDYRLGDQ\LQWHUIHULQJVLJQDOV7KHUHPRWHRXWSXW
LV DFWLYDWHG DXWRPDWLFDOO\ DV VRRQ DV WKH ERRWLQJ
process of the DSP is completed. Additionally this
RXWSXW ZLOO EH WXUQHG RII GXULQJ WKH ³3RZHU 6DYH
Mode” or a software update process.
Attention:
Solely use the pluggable screw-terminal
ZKLFKLVLQFOXGHGLQGHOLYHU\
Important: Never use a different signal than the
remote output of the DSP to activate connected
DPSOL¿HUV
7
Ground lift switch
The ground of the HELIX DSP.2 signal inputs is gal-
YDQLFDOO\ GHFRXSOHG IURP WKH JURXQG RI WKH VLJQDO
outputs. In many cars this setup is the best way to
DYRLGDOWHUQDWRUQRLVH1HYHUWKHOHVVWKHUHDUHXVH
cases where it will be necessary to directly con-
nect input and output ground or to tie both grounds
WRJHWKHU YLD D UHVLVWRU 7KHUHIRUH WKH
Ground lift
switch
has three positions:
-
center
position: input and output ground
separated.
-
left
position: input and output ground tied
together.
-
right
position: input and output ground
FRQQHFWHGYLD2KPVUHVLVWRU
Initial start-up and functions
