14
Connectors and control units
1
Line Input
RCA inputs for connecting pre-amplifier sig-
nals
2
Coax Input
Electrical input for digital stereo signals
(SPDIF format)
3
Input Switch
Selector between „Coax Input“ and „Optical
Input“
4
Optical Input
Optical input for digital stereo signals (SPDIF
format)
5
Clipping LED
This LED lights up red if one of the analog
inputs is overdriven
6
Highlevel Input
Highlevel speaker inputs for connecting a
factory radio or an aftermarket radio without
pre-amp / line outputs
7
Power Input
Connector for the DC power supply with an
additional remote in- and output. The remote
output has to be used to switch on external
amplifiers
1
4
3
2
6
7
5
9 10 11
12
13
8
8
Ground lift switch
Can be used to define the connection be-
tween the grounding of the inputs and out-
puts
9
Control pushbutton
Use this button to either switch between the
setups or initiate a reset of the device
10
Status LED
This LED indicates the operating mode of the
DSP and which setup has been chosen
11
USB input
Connects the HELIX DSP PRO to your PC
12
Control Input
Multifunction interface for e.g. an optional
remote control or other HELIX DSP PRO ac-
cessory
13
Line Output
Pre-amplifier outputs for connecting the
amplifier/s. The maximum output voltage is 6
Volts
