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Dear Customer,

congratulations on your purchase of this high-qua-
lity HELIX amplifier, made in Germany. The new
Helix competition series amplifiers highlights best
quality, excellent manufacturing and state-of-the-
art technology.  After 23 years of experiences in
the research & development of audio products this
amplifier generation sets new standards. The
attractive typical Helix design makes this amplifier
to an outstanding and top of the class product.

We wish you many hours of enjoyment with your
new HELIX amplifier. 

Yours

AUDIOTEC FISCHER Team

General installation instructions for HELIX
amplifiers

To find out how HELIX amplifiers work best for
you, read this manual carefully and follow the
instructions for installation. We guarantee that this
product has been checked for proper functioning
before shipping. 

Before you start installation, disconnect the car
battery at the minus pole. We would urge you to
have the installation work carried out by a specia-
list as verification of correct installation and
connection of the unit is a prerequisite for warran-
ty cover of the HELIX amplifier. 

Install your amplifier at a dry location where there
is sufficient air circulation to ensure adequate coo-
ling of the equipment. For safety reasons, the
amplifier must be secured in a professional man-
ner. This is performed by means of four fixing
screws screwed into a mounting surface offering
sufficient retention and stability. 

Before drilling the holes for the screws, carefully 
examine the area around the installation position
and make sure that there are no electrical cables or
components, hydraulic brake lines or any part of
the petrol tank located behind the mounting surfa-
ce - otherwise these could be damaged. You should
be aware of the fact that such components may
also be concealed in the double-skin trim
panels/mouldings.

General instruction for connecting the ampli-
fiers

The HELIX amplifiers may only be installed in
motor vehicles which have a 12-volt minus pole
connected to the chassis ground.  Any other system
could cause damage to the amplifier and the elec-
trical system of the vehicle. 

The plus cable from the battery for the complete
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 input of the car audio system.

Install the cabling in a manner which precludes
any danger of the leads being exposed to shear,
crushing or rupture forces. If there are sharp edges
in the vicinity (e.g. holes in the bodywork) all
cables must be cushioned and protected to prevent
fraying.

Never lay the power supply cables adjacent to
leads and lines connecting other vehicle equipment
(fan motors, fire detection modules, gas lines etc.).

In order to ensure safe installation, use only high-
quality connections and materials. Ask your dealer
for high quality accessories.

20

22

19

18

21

9

8

7

6

5

4

3

2

1

14

13

2

1

3

2

1

3

2

1

3

2

1

3

17

16

15

12

11

10

2 0

2 0

2 0

2 0

Connecting the remote lead

Connecting the battery cable

Connecting the ground cable

Fuses 4 x 20 Ampere

Fuse Function Indication

Signal input  channel A

Signal input  channel B

Level controls for input sensitivity

500 mV - 8 V

CPS-Colour Protection System

green

= in operation

yellow

= technical failure

red

= overheating

Switch for HP/ Linear/ LP 

Control for frequency range for

Low Pass

Control for frequency range for

High Pass

Switch for Stereo/Bridged/Mono

Speaker terminal for channel A 

Speaker terminal for channel B

Control for frequency range Low

Pass

Control for frequency range High

Pass

Control to raise the center fre-

quency

Adjustment of center frequencies

1

2

3

4

5

6

7

8-9

10-12

13

14

15

16

17

18

19

20

21

22

ENGLISH

Summary of Contents for A2 Competition

Page 1: ...B E D I E N U N G S A N L E I T U N G T U N G I N S T R U C T I O N M A N U A L MADE IN GERMANY by...

Page 2: ...keine elektrischen Kabel und Komponenten hydraulische Bremsleitungen der Benzintank etc dahinter verborgen sind Diese k nnten sonst besch digt werden Achten Sie darauf da solche Teile sich auch in de...

Page 3: ...des Reglers 20 die exakte Frequenz eingestellt werden Bei der Schalterstellung Tiefpass Bandpass ist der Hochpass immer aktiv Das hei t es wird in jedem Fall ein Bandpass gebildet Mit dem Schalter 15...

Page 4: ...eder f r sich 1 Ohm stabil ist Das hei t das an jedem Kanal eine Lautsprecherimpedanz von 1 Ohm angeschlossen werden kann Beim Br ckenbetrieb arbeiten je zwei Verst rker zusammengeschaltet als ein Kan...

Page 5: ...B x T in mm 35 x 240 x 432 Gewicht netto 4 7 kg Technical Data A 2 Competition Cont power rating at 4 Ohms per channel measured at 12 V 2 x 120 Watts RMS Cont power rating at 4 Ohms per channel measu...

Page 6: ...act that such components may also be concealed in the double skin trim panels mouldings General instruction for connecting the ampli fiers The HELIX amplifiers may only be installed in motor vehicles...

Page 7: ...ll Range linear or Lowpass If this switch is set on Highpass the frequency range can be adjusted with switch No 15 and the exactly frequen cy can bet set with control No 20 At switch position Lowpass...

Page 8: ...f a 4 ohms loudspeaker is connected to a brid ged amplifier it means 2 ohms for each channel and so 1 ohm with a 2 ohms loudspeaker Therefore 2 ohms is the lowest impedance that can be connected to a...

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