HELIX DSP PRO MK2 Manual - User Manual

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Digitaler High-Res 10-Kanal Signalprozessor mit

96 kHz / 32 Bit Signalweg

Digital High-Res 10-channel signal processor

with 96 kHz / 32 Bit signal path

deutsch / english

DSP PRO

MK2

Congratulations!

General instructions

Dear Customer,

Congratulations on your purchase of this innovative
and high-qual ity HELIX product.

With the HELIX DSP PRO MK2, Audiotec Fischer is
setting new standards in the range of digital signal
processors.

We wish you many hours of enjoyment with your
new HELIX DSP PRO MK2.

Yours,
AUDIOTEC FISCHER

General installation instructions for HELIX
components

To prevent damage to the unit and possible injury,
read this manual carefully and follow all installation
instructions. This product has been checked for
proper function prior to shipping and is guaranteed
against manufacturing defects.

Before starting your installation, disconnect
the battery’s negative terminal to prevent

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For

a proper performance and to ensure full warranty
coverage, we strongly recommend to get this prod-
uct installed by an authorized HELIX dealer.

Install your HELIX DSP PRO MK2 in a dry location

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equipment. The signal processor should be secured
to a solid mounting surface using proper mounting
hardware. Before mounting, carefully examine the
area around and behind the proposed installa-
tion location to insure that there are no electrical
cables or components, hydraulic brake lines or any
part of the fuel tank located behind the mounting
surface. Failure to do so may result in unpredictable
damage to these components and possible costly
repairs to the vehicle.

General instruction for connecting the HELIX
DSP PRO MK2 signal processor

The HELIX DSP PRO MK2 signal processor may
only be installed in vehicles which have a 12 Volts
negative terminal connected to the chassis ground.
Any other system could cause damage to the signal
processor and the electrical system of the vehicle.
The positive cable from the battery for the entire
sound system should be provided with a main fuse
at a distance of max. 30 cm from the battery. The
value of the fuse is calculated from the maximum
total current draw of the car audio system.

Use only the provided connectors or the option-
ally available Easy Plug Cable for connection
of the HELIX DSP PRO MK2. The use of other
cables can result in damage of the signal pro-
cessor, the head unit / radio or the connected

DPSOL¿HUVORXGVSHDNHUV

Prior to installation, plan the wire routing to

avoid any possible damage to the wire harness.
All cabling should be protected against possible

crushing or pinching hazards. Also avoid routing
cables close to potential noise sources such as
electric motors, high power accessories and other
vehicle harnesses.

Connectors and control units

Ground lift switch

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between the grounding of the inputs and
outputs.

Control pushbutton

Use this button to either switch between the
setups or initiate a reset of the device.

Status LED

This LED indicates the operating mode of the
DSP and which setup has been chosen.

USB input

Connects the HELIX DSP PRO MK2 to your
PC.

Control Input

Multifunction interface for e.g. an optional
remote control or other HELIX accessory.

Line Output

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sure that the remote output is used to turn on
these devices.

Line Input

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signals.

Coax Input

Electrical input for digital stereo signals
(SPDIF format).

Optical Input

Optical input for digital stereo signals (SPDIF
format).

Clipping LED

This LED lights up red if one of the analog
inputs is overdriven.

Highlevel Input

Highlevel speaker inputs for connecting a
factory radio or an aftermarket radio without
pre-amp / line outputs.

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

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Line Input

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sourc es such as radios. Input sensitivity is
factory-set set to 4 Volts. It is possible to vary the
sensitivity of each channel between 2 and 4 Volts.
inside the device.

Coax Input

Coaxial input in SPDIF format for connecting sour-
c es with a digital audio output. The sampling rate of
this input has to be in the range of 12 and 192 kHz.
The input signal is automatically adapted to the in-
ternal sample rate.
In order to activate this input and to control its vol-
ume, 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.

Important:

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Coax Input

has to

be activated in the DSP PC-Tool software or with
an optional remote control. The

Optical Input

activated ex works.

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
internal sample rate. In order to activate this input
and to control its volume, 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.

Notice:

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DSP PRO MK2 automatically activates this input if
a digital audio signal is detected.

Clipping LED

This LED lights up red if one of the eight

Line Inputs

Highlevel Inputs

is overdriven. The LED has no

function if the device is fed with digital input signals.
If this LED lights up reduce the input sensitivity by
using the internal trim potentiometers until the LED
goes out (item 3 page 20; “Adjustment of the input
sensitivity”).

Highlevel Input

8-channel highlevel loudspeaker input to connect
the signal processor directly to loudspeaker outputs

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tivity is factory-set to 10 Volts for all channels.
It is possible to vary the sensitivity of each channel
between 5 - 10 Volts and 10 - 20 Volts inside the
device (item 3 page 20; “Adjustment of the input
sensitivity”).
By changing the sensitivity range, the input imped-
ance of the highlevel inputs is shifted as well in or-
der to guarantee a perfect operation in combination

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Attention:

Solely use the pluggable screw-terminal

for the highlevel connector which is included in de-
livery or an optional available cable harness from
the HELIX accessory assortment!

Important:

It is strictly forbidden to use the

High-

level Input

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Line Input

) at

the same time. This may cause severe damage to

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Power Input

This input is used for connecting the signal pro-
cessor to the power supply of the vehicle and for
remote in / out. If the highlevel loudspeaker inputs
are used the remote input can be left unconnected.
The remote output is used for turning on/off ampli-

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Line Outputs

of the

HELIX DSP PRO MK2. Connect this remote out-

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essential to avoid any interfering signals. The

remote output is

activated automatically as soon

as the booting process of the DSP is completed.
Additionally this output will be turned off during the
“Power Save Mode” or a software update process.

Attention:

Solely use the pluggable screw-terminal

which is included in delivery!

Important: Never use a different signal than the
remote output of the DSP to activate connected

DPSOL¿HUV

Ground lift switch

The ground of the HELIX DSP PRO MK2 signal in-
puts is galvanically decoupled from the ground of
the signal outputs. In many cars this setup is the
best way to avoid alternator noise.
Nevertheless, there are use cases where it will

Initial start-up and functions

be necessary to directly connect input and output
ground or to tie both grounds together via a resistor.
Therefore the

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

connected via 200 Ohms resistor.

Control pushbutton

The

Control pushbutton

allows the user to switch

between the two setup memory positions. To switch
between the setups the button has to be pressed
and held for one second. Switching is indicated by

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Status LED

. Pressing the

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of the

Status LED

Attention:

After erasing the setups from memory

the HELIX DSP PRO MK2 will not reproduce any
audio output.

Status LED

The

Status LED

indicates the current active DSP

setup. Green means that setup 1 is load ed, orange

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dicates that no setup is loaded. In that case please
load a new setup via the DSP PC-Tool software. If
the LED starts blinking orange, the internal tem-

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put will be turned off. If the temperature still rises the
signal processor will shut down until it has reached
a safe temperature level again.

USB input

Connect your personal computer to the
DSP PRO MK2 using the provided USB cable.

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processor can be downloaded from the Audiotec
Fischer website

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Please note:

It is not possible to connect any USB

storage devices.

Control Input

This multi-functional input is designed for HELIX ac-
cessory products like a remote control which allows
to adjust several features of the signal processor.

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IXQFWLRQDOLW\KDVWREHGH¿QHGLQWKH³'HYLFH&RQ

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Line Output

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SRZHUDPSOL¿HUV7KHRXWSXWYROWDJHLV9ROWVPD[

Please make sure that you always turn on/off exter-

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processors

Power Input

. Never directly control the

external amps by a signal from the ignition switch
of your car! Additionally this output will be turned
off when the “Power Save Mode” of the signal pro-
cessor is active. The outputs can be assigned to
any of the inputs as desired using the DSP PC-Tool
software.

Initial start-up and functions

Channel A

Channel B

Channel C

Channel D

Channel E

Channel F

Channel G

Channel H

Channel assignment:

Adjustment of the input sensitivity of the
highlevel inputs:

Jumper upper position*

Jumper lower position

2 V 4 V*

5 V 10 V*

RCA / Cinch

2 V 4 V

Highlevel

10 V 20 V

Adjustment of the input sensitivity for using channel G & H
as AUX inputs:

Jumper lower position*

Channel G & H:

2 V 4 V*

Jumper upper position

Channel G & H:

250 mV 500 mV

Installation

* Ex factory adjustment of HELIX DSP PRO MK2

Fig. 1

Fig. 3

Fig. 2

Installation

Connection of HELIX DSP PRO MK2 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 15). It is recommended that the device will be
installed by an authorized HELIX dealer.

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Use the correct cable (RCA / cinch cable)

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er / lowlev el / cinch outputs of your car radio.
Each input can be assigned to any output us-
ing the DSP PC-Tool software. The automatic
turn-on circuit does not work when using the

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put has to be connected to activate the HELIX
DSP PRO MK2.

Important:

It is strictly forbidden to use the

Highlevel Input

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Line

Input

) at the same time. This may cause severe

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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.). We recommend the following channel
assignment if a common car radio will be con-
nected to the signal processor:
Channel A = Front left
Channel B = Front right
Channel C = Rear left
Channel D = Rear right
Actually it is not mandatory to use all high level
speaker inputs. If only two channels will be con-
nected we recommend to use the channels A
and B. Make sure that the polarity is correct. If
one or more connections have reversed polar-
ity it may affect the performance of the signal
processor. If this input is used the remote input
does not need to be connected as the signal
processor will automatically turn on once a
loudspeaker signal is received.

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Attention:

It is mandatory to properly adapt

the input sensitivity of the DSP PRO MK2 to
the signal source in order to avoid damage
to the signal processor.

If you want to change the input sensitivity you

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side panel where the USB input is located by

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the bottom plate sideways. Now you have ac-
cess to the eight trim potentiometers that allow
adjusting each channel individually. The assign-
ment of the trim pots to the respective channels

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Please note:

The setting of the trim potentiom-

eters affects both the lowlevel and the highlevel
inputs!

If the sensitivity range of the highlevel input may

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SRVLWLRQLQJDMXPSHUVHH¿JXUHRQSDJH
7KHVHQVLWLYLW\UDQJHRIWKHWZRSUHDPSOL¿HULQ

puts G and H can also be changed to connect

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output voltage (like smartphones) by reposition-

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Important:

To change the position of a jumper it

has to be removed by pulling it straight upwards
and plugged into the desired position. Make
sure that the jumper is reinserted properly and
all pins are fully inserted. The position of each
jumper can be changed independently.
Follow the subsequent steps to perfectly adapt
the signal processors input sensitivity to your
audio source by using the internal trim poten-
tiometers:

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of the HELIX DSP PRO MK2 during this
setup.

2. Turn on the signal processor.
3. Adjust the volume of your radio to approx.

90 % of the max. volume and playback an
1 kHz full scale test tone (0 dB) via CD drive.

4. The adjustment will be easier when you con-

nect and adjust one input channel after the
other.

5. If the

Clipping LED

already lights up, you

have to reduce the input sensitivity via the
respective trim potentiometer until the LED
turns off.

If the potentiometer is already set to full CW
position it will be necessary to change the
sensitivity range by repositioning the jumper

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only have an effect on the highlevel inputs!

6. Increase the input sensitivity by turning the

respective potentiometer counterclockwise
until the LED lights up. Now turn the poten-
tiometer clockwise until the

Clipping LED

turns off again.

7. Repeat this process for each channel you

are using.

4. Connecting a digital signal source

If you have a signal source with optical or coax-
ial digital output you can connect it to the signal
processor using the appropriate input. In stan-

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LVFRQ¿JXUHGWRDXWRPDWLFDOO\DFWLYDWHWKHGLJLWDO

input which is activated in the software as soon
as a digital audio signal is detected. The

Optical

Input

is activated ex works. This function can be

deactivated via the DSP PC-Tool software. Al-
ternatively you can manually activate the digital
input if you are using an optional remote con-
trol.
The automatic turn-on circuit does not work
when a digital input is used. Therefore it is
mandatory to connect the remote input of the

Power Input

. Please note that it is possible to

connect a source to one of the digital inputs and
the

Highlevel Input

or the

Line Input

at the same

time.

Important:

The signal of a digital audio source

normally does not contain any information
about the volume level. Keep in mind that
this will lead to full level on the outputs of the
HELIX DSP PRO MK2 and your connected

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your speakers. We strongly recommend to use
an optional remote control for adjusting the vol-
ume level of the digital signal input!

Information:

The HELIX DSP

PRO

MK2

can only handle uncompressed digital ste-
reo signals in PCM format with a sample rate
between 12 kHz and 96 kHz / 192 kHz and no
Dolby-coded signals.

5. Connection to power supply

Make sure to disconnect the battery before

installing the HELIX DSP PRO MK2!

Solely use the included screw-type terminal to
connect the HELIX DSP PRO MK2 to a pow-
er supply. Make sure of correct polarity. The
ground wire must be connected to the vehicle
chassis at a non-insulated point. Inadequate
grounding causes audible interference and
malfunctions.
The positive wire has to be connected to the
battery’s positive post or a power distribution
block. Though the current draw of the HELIX
DSP PRO MK2 is rather low (approx. 510 mA)
we recommend a minimum wire gauge of
1 mm² / AWG18 for both power supply wires.

6. Connecting the remote input

The remote input of the

Power Input

has to

be connected to the radio remote output if the

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digital inputs are solely used as signal inputs.
We do not recommend controlling the remote
input via the ignition switch to avoid pop noise
during turn on/off. If the

Highlevel Input

is used

this input does not need to be connected as
long as the car radio has BTL output stages.

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The DSP PRO MK2 will be turned on automati-
cally if the

Highlevel Input

is used or if a signal is

applied to the remote input terminal. The “Auto
Remote” switch allows to deactivate the auto-
matic turn-on feature. The feature should be de-
activated if there are e.g. noises while switching
on/off the signal processor.

Note:

If the automatic turn-on function is deac-

tivated it is mandatory to use the remote input
terminal to power up the signal processor! The
highlevel signal will be ignored in this case.

Note:

The activation of the signal processor via

speaker input is activated ex works.
To deactivate the automatic turn-on feature
you have to open the device and change the
position of the “Auto Remote” switch. Therefore
dismantle the side panel (where the USB input

LVORFDWHGE\UHPRYLQJWKH¿YH3KLOOLSVVFUHZV

Now you can pull out the bottom plate and get
access to the switch. The switch is located near

by the jumper for adjusting the input sensitivity
of the highlevel inputs (see marking in the fol-
lowing picture).

On: Activation via highlevel speaker input is

enabled (ex works).

Off: Activation via highlevel speaker input is

disabled.

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The general DSP settings should be con-
ducted with the DSP PC-Tool software be-

IRUHXVLQJWKHVLJQDOSURFHVVRUIRUWKH¿UVW

time.

Ignoring this advice may result in damaging the

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mation about connecting the DSP PRO MK2 to
a computer can be found on page 24.

9. Connecting the remote output

This output (Remote out) is used to supply re-

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use this remote output signal to turn on the am-

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Installation

Installation with “Easy Plug Cable”

To simplify installation to an OEM or aftermarket
radio the HELIX DSP PRO MK2 can also be con-
nected using the optional Easy Plug Cable (EPC 5)
which will supply the signal processor with both
power and loudspeaker

signals of the radio. No

factory wires or plugs need to be cut by using this
connection method. The Easy Plug Cable uses the
highlevel inputs A - D.
Connection to an OEM radio is detailed below:

Once the radio has been removed by using the

right tools disconnect the OEM harness from
the radio. Connect the vehicle cable jack con-
nectors of the Easy Plug Cable. You may need
a special ISO-adaptor depending on vehicle
type. In order to verify please check the adaptor
database on the Audiotec Fischer homepage

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Connect the cable plugs to the car radio.

Connect the highlevel plug (8-pole connector)

and the power supply plug (4-pole connector) of
the Easy Plug Cable to the appropriate HELIX
DSP PRO MK2 inputs (

Highlevel Input

A to D

and

Power Input

Please note when connecting the power sup-

ply the permanent and switched 12 Volts wires
may be reversed depending on vehicle type.
The HELIX DSP

PRO

MK2 should not be

plugged into the power supply via the ignition
cable as this may cause interferences. Before
connecting the Easy Plug Cable to the HELIX

'633520. YHUL¿FDWLRQ RI WKH SHUPDQHQW

12 Volts wire must be made between the blue
and red wires coming from the ISO connectors
of the harness with a voltmeter. The permanent
12 Volts wire will show voltage even with the ve-
hicle ignition turned off. Once the correct wire is

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corresponding blue or red wire with plug. The
positive cable of the harness usually has a fuse
of max. 20 A.

Attention:

The ex factory condition is that the

red wires are connected. If you’re uncertain of
assignment ask your dealer.

Note - Cars equipped with MOST bus:

In cars equipped with MOST bus structure it is

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original radio connector and insert it into the ISO
adaptor which has a dedicated recess for this.

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DSP PRO MK2 with our DSP PC-Tool software.
The user interface is designed for easy handling of
all functions and allows an individual adjustment of
each of the ten DSP channels. Prior to connecting
the signal processor to your PC visit our website
and download the latest version of the DSP PC-Tool
software.
Check from time to time for software updates. You

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al on

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We strongly recommend to carefully read the user
manual (Sound Tuning Magazine) before using the

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plications and failures.

Important:

Make sure that the signal processor is

not connected to your computer before the software
and USB driver are installed!

In the following the most important steps how to

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Download the latest version of the DSP

PC-Tool software (available on our website

ZZZDXGLRWHF¿VFKHUFRP

) and install it on

your computer.

Connect the signal processor to your computer

using the USB cable that is included in delivery.
If you have to bridge longer distances please
use an active USB extension cable with inte-
grated repeater and no passive extension.

Turn on the signal processor and start the soft-

ware after the Status LED lights up green. The
operating software will be updated automatical-
ly to the latest version if it is not up-to-date.

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DSP PRO MK2 with our intuitive DSP PC-Tool
software. Nevertheless, interesting and useful
hints can be found e.g. in our “Sound Tuning
Magazine”, which can be downloaded for free
from our website.

Caution:

We highly recommend to set the vol-

ume of your car radio to minimum position during

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connected to the signal processor until general set-
tings in the DSP PC-Tool software have been made.
Especially if the DSP PRO MK2 will be used in fully
active applications, a wrong setup can destroy your
speakers right away.

Connection to a PC

Load and save

Main menu

Channel configuration

Highpass filter

Lowpass filter

Time alignment

Output level

Frequency graph

Range of frequency graphs

Equalizer

EQ fine adjustment

HELIX Extension Card slot (HEC slot)

It is possible to extend the functionality of the HELIX
DSP PRO MK2 by inserting an optional

HELIX

Extension Card (HEC) - for example a

Bluetooth

Audio Streaming module, an additional optical digi-
tal input, an AUX input or an USB audio input.
To install a HELIX Extension Card it is necessary to
remove the side panel of the DSP PRO MK2 and
replace it by the new side panel that comes with the
HEC module.

Attention: Install the HEC module only in the

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the HEC module in other devices or slots can
result in damage of the HEC module, the signal
processor, the head unit / car radio or other con-
nected devices!

Read in the following the steps how to install a HEC
module:

First disconnect all cables from the device.

Dismantle the side panel where the USB input

LVORFDWHGE\UHPRYLQJWKH¿YH3KLOOLSVVFUHZV

Pull out the bottom plate sideways.

Prepare the module for installing it into the de-

vice. Any further mounting information will be
found in the instruction manual of the respective
HEC module.

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of the device which is marked in the following
picture.

Make sure that the HEC module is installed

properly and all pins are fully inserted into the
socket.

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panel which is delivered with the HEC module

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Bolt the HEC module to the side panel. Precise

mounting information will be found in the in-
struction manual of the respective HEC module.

Reconnect all cables to the device.

10.

Turn on the signal processor. The HEC module

is automatically detected by the device and the
Status LED of the HEC module lights up green.

11.

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in the DSP PC-Tool software.

96 kHz sampling rate

The HELIX DSP PRO MK2 allows to handle all
signals with the doubled sampling rate of 96 kHz.
Thus the audio bandwidth is no long er limited to
usual values like 22 kHz but allows an extended
frequency response to more than 40 kHz. Doubling

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power as the number of possible arithmetic opera-
tions is halved. Only the implementation of the lat-
est DSP chip generation allows raising the sampling
rate to 96 kHz and adding new features plus addi-
tional channels at the same time.

Signal converters with a native resolution of
32 Bit

The HELIX DSP PRO MK2 uses high-class AD and
DA converters of the latest generation with a native
resolution of 32 Bit instead of the common 24 Bit.
The result is an unprecedented precision in signal
conversion that especially optimizes the sound
quality at lower signal levels.

Smart highlevel input

The latest generation of OE car radios incorporates
sophisticated possibilities of diagnosing the con-
nected speakers. If a common signal processor will

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features (e.g. fader function) quite often appears -
but not with the DSP PRO MK2.
The new ADEP circuit (Advanced Diagnostics Error
Protection) avoids all these problems without load-
ing the speaker outputs of the OE radio during high
volumes unnecessarily.

Start-Stop capability

The switched power supply of the HELIX
DSP PRO MK2 assures a constant internal supply
voltage even if the battery’s voltage drops to 6 Volts
during engine crank.

Power Save Mode

The Power Save Mode is incorporated in the basic

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to the HELIX DSP PRO MK2 once there’s no input
signal present for more than 60 seconds. Please
note that in many up-to-date cars with “CAN” or any
other internal bus structures it may happen that the
radio remains “invisibly” turned on for up to 45 min.
even after locking and leaving the car! Once the
“Power Save Mode“ is active the remote output and

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off. The HELIX DSP PRO MK2 will reactivate the
remote output within a second if a music signal is
applied. It is possible to either modify the turn-off
time of 60 sec. or completely deactivate the “Power
Save Mode” via the DSP PC-Tool software.

Automatic Digital Signal Detection

Switching from analog input to one of the digital in-
puts is done automatically as soon as a signal is
detected on the

Optical Input

Coax Input

. This

feature can be deactivated in the DSP PC-Tool soft-
ware. Alternatively you can use an optional remote
control for manual switching between analog and
digital inputs.

Unique Features of the HELIX DSP PRO MK2

Inputs ...............................................................................8 x RCA / Cinch

8 x Highlevel speaker input

1 x Optical SPDIF (12 - 96 kHz)

1 x Coax SPDIF (12 - 192 kHz)

1 x Remote In

Input sensitivity ................................................................RCA / Cinch 2 - 4 Volts

Highlevel 5 - 10 or 10 - 20 Volts

Outputs ............................................................................10 x RCA / Cinch

1 x Remote Out

Output voltage .................................................................8 Volts

Frequency response ........................................................10 Hz - 44,000 Hz

DSP resolution .................................................................64 Bit

DSP power ......................................................................295 MHz (1.2 billion MAC operations/second)

Sampling rate ..................................................................96 kHz

DSP type .........................................................................Audio signal processor

Signal converters .............................................................A/D: Asahi Kasei 32 Bit

D/A: Asahi Kasei 32 Bit

Signal-to-noise ratio digital input .....................................116 dB (A-weighted)

Signal-to-noise ratio analog input ....................................110 dB (A-weighted)

Total harmonic distortion (THD+N) digital input ...............< 0.0005 %

Total harmonic distortion (THD+N) analog input .............< 0.001 %

IM distortion (IMD) digital input ........................................< 0.002 %

IM distortion (IMD) analog input ......................................< 0.004 %

Crosstalk..........................................................................> 90 dB

Operating voltage ............................................................9.6 - 18 Volts (max. 5 sec. down to 6 Volts)

Current draw ....................................................................510 mA

Max. remote output current .............................................500 mA

Additional features ...........................................................HEC slot, Ground lift switch, Control Input,

ADEP circuit, Auto Remote switch

Dimensions (H x W x D) ..................................................40 x 177 x 150 mm / 1.58 x 6.97 x 5.91“

Technical Data

Warranty Disclaimer

The limited warranty comply with legal regulations.
Failures or damages caused by overload or im-
proper use are not covered by the warranty. Please
return the defective product only with a valid proof
of purchase and a detailed malfunction description.

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Errors are reserved! For damages on the vehicle
and the device, caused by handling errors of the
device, we can’t assume liability. This product is

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the European Community (EC).

Note:

“The

Bluetooth

word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by

Audiotec Fischer GmbH is under license. Other trademarks and trade names are those of their respective owners.”

Audiotec Fischer GmbH

Hünegräben 26 · 57392 Schmallenberg · Germany

Tel.: +49 2972 9788 0 · Fax: +49 2972 9788 88

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