HELIX M FOUR DSP - Initial Start-Up and Functions (Continued); Control Input and Remote Accessories; Optical Input for Digital Audio Sources; Line Output for External Amplifiers

26
Orange: Power Save Mode is active.
Red: Protection Mode is active. The HELIX
M FOUR DSP is equipped with a protection circuit
against overheating. Please check the thermal in-
stallation conditions of the amplier and observe the
general installation instructions on page 23.
If the amplier is overheated the internal tempera-
ture protection switches o󰀨 the remote and signal
output until it reaches a safe temperature level
again.
Red / green slow ashing: No operating soft-
ware installed. Connect the amplier to the DSP
PC-Tool software and conrm the automatic up-
date of the operating system. You will nd the
latest version of the DSP PC-Tool software at
www.audiotec-scher.com.
Red / green fast ashing: The currently selected
sound setup memory is empty. A new setup has to
be loaded via the DSP PC-Tool software or switch
to a memory position with existing sound setup.
7
Control Input
This multi-functional input is designed for HELIX
M FOUR DSP accessory products like a remote
control which allows to adjust several features
of the amplier. Depending on the type of remote
control, at rst its functionality has to be dened
in the “ Device Conguration Menu” (DCM) of the
DSP PC-Tool software or on the control itself.
8
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-
ternal sample rate. In order to control the volume of
this input, we recommend to use an optional remote
control or the WIFI CONTROL.
In addition, the DSP PC-Tool also o󰀨ers the option
to automatically activate this input via signal detec-
tion as soon as a music signal is detected to the
Optical Input.
Note: This amplier can only handle stereo input
signals and no Dolby-coded digital audio stream!
Note: In standard conguration the manual activa-
tion via an optional remote control is congured.
9
Line Output
Processed 6-channel pre-amplier output with a
maximum output voltage of 6 Volts RMS for con-
necting additional power ampliers. Please make
sure that you always turn on / o󰀨 external ampli-
ers using the remote output (Rem. Out) of the
M FOUR DSP. Never directly control the external
amps by a signal from the ignition switch of your
car! Additionally this output will be turned o󰀨 when
the “Power Save Mode” of the amplier is active.
The outputs can be assigned to any of the inputs as
desired using the DSP PC-Tool software.
Attention: Solely use the provided RCA / Cinch
connection cable for the connection which is includ-
ed in delivery (see page 28, g. 1).
10
Auto Remote
The M FOUR DSP will be turned on automatically if
the Highlevel Input is used or if a signal is applied to
the remote input (REM) terminal. The Auto Remote
switch allows to activate / deactivate the automatic
turn-on feature of the highlevel inputs. The feature
should be deactivated (Auto Remote = O󰀨) if there
are e.g. disturbing noises while switching on / o󰀨
the amplier.
Note: The automatic turn-on feature of the highlevel
inputs is activated ex works (Auto Remote = On).
Note: If the automatic turn-on function is deactivat-
ed it is mandatory to use the remote input to power
up the amplier! The highlevel signal will be ignored
in this case.
11
Speaker Output
Speaker outputs to connect speaker systems. The
impedance of each channel must not be less than
2 Ohms (4 Ohms in bridged mode).
Important: We highly recommend to make the
general settings in the DSP PC-Tool software be-
fore the rst start-up. Especially if the M FOUR DSP
Initial start-up and functions