Installation - HELIX G ONE Installation Instructions Manual

in case of overheating, over- and undervoltage,
short-circuit on loudspeakers and false connection.
Please check for connecting failures such as
short-circuits, wrong connections, wrong adjust-
ments and over temperature.
If the amplifier does not turn on it is defective and
has to be send to your local authorized dealer for

Installation

Connection of HELIX G ONE 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 11). It is recommended that this unit will be
installed by an authorized HELIX dealer.
1. Connecting the pre-amplifier inputs
Use the correct cable (RCA / cinch cable) to
connect these inputs to the pre-amplifier /
lowlev el / cinch outputs of your car radio. It is
not mandatory to use both pre-amplifier inputs.
If only one channel will be connected use chan-
nel A and set the Input Mode switch to "1CH".
When both channels will be used please choose
switch position "2CH" (see page 13 point 6; In­
put Mode). The automatic turn-on circuit does
not work when using the pre-amplifier inputs. In
this case the remote input (REM) has to be con-
nected to activate the HELIX G ONE.
Important: It is strictly forbidden to use the
Highlevel Input and pre-amplifier inputs (Line
Input) at the same time. This may cause severe
damage to the pre-amplifier outputs of your car
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.).
Actually it is not mandatory to use both high-
repair service. A detailed description of the malfunc-
tion and the purchase receipt has to be attached.
Output Channel
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Speaker outputs to connect a subwoofer. The min-
imum load impedance should not be lower than
1 Ohm.
level speaker inputs. If only one channel will be
connected we recommend to use the channel A
and set the Input Mode switch to "1CH". When
both channels will be used please choose
switch position "2CH" (see page 13 point 6; In­
put Mode). Make sure that the polarity is cor-
rect. If one connection has reversed polarity it
may affect the performance of the amplifier. If
this input is used the remote input (REM) does
not need to be connected as the amplifier will
automatically turn on once a loudspeaker signal
is applied.
3. Adjustment of the input sensitivity
Attention: It is mandatory to properly adapt
the input sensitivity of the G ONE to the sig-
nal source in order to avoid damage to the
amplifier.
If you want to change the input sensitivity use
the Input Level control (see page 13 point 2; In­
put Level). The setting of the control affects
both the lowlevel (Line Input) and the highlevel
speaker inputs ( Highlevel Input)! If the High­
level Input is used with a standard car radio we
recommend an input sensitivity of roughly 9
Volts - turn the control from min position to 1/3
position - 11 o'clock position.
4. Connecting the loudspeaker outputs
The loudspeaker outputs can be connected
directly to the wires of the loudspeakers.
Note: Outputs are wired in parallel internally.
This means that both plus outputs (+) resp.
both minus outputs (-) deliver the same output
signal.
Never connect any of the loudspeaker cables
with the chassis ground as this will damage
your amplifier and your speakers.
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