BRAX X 2400 Manuale utente

Instruction Manual

INNOVATIVE AUDIO PERFORMANCES

MADE IN GERMANY

X 1400

X 2400

4-Channel Amplifier

Introduction Contents

Dear Customer,

Congratulations on your purchase of this high-quality

BRAX product.

You may be interested to know that we have been working

now for 18 years in the development and production of

top-quality high-end hifi components.

Within just a few years, we have succeeded in giving the

BRAX brandname world wide recognition. Our efforts in

creating these quality products have also been rewarded

through the award of various honours by the major car

audio

magazines, not to mention numerous world wide

innovation

prizes.

In keeping with the tradition thus established, we have again

provided our new BRAX amplifiers with everything they

require in order to assume their rightful position as the pace-

setters in the market. Offering the maximum possible level

of engineering quality, they combine outstanding sound

reproduction, solid craftmanship and the noblest of materials

to provide a completely new dimension in individuality.

We are proud to offer you this high-end product MADE IN

GERMANY. and wish you many hours of enjoyment with

your new BRAX amplifier.

AUDIOTEC FISCHER GMBH

Heinz Fischer

Introduction and Contents . . . . . . . . . . . . . . . . . . Page 2

Installing the BRAX Amplifiers . . . . . . . . . . . . . .Page 3

Connection of the BRAX Amplifiers . . . . . . . . . . Page 4

Connection of the Power Supply . . . . . . . . . . . . . Page 5

Connection of the Signal Cables . . . . . . . . . . . . . Page 5

Connection of the Speaker Cables . . . . . . . . . . . . Page 6

Circuit Control Cards CCC . . . . . . . . . . . . . . . . . Page 7

Operation of the Circuit Control Cards . . . . . . . . Page 7

Circuit Control Cards Data Sheet . . . . . . . . . . . . . Page 8

What if?/Troubleshooting . . . . . . . . . . . . . . . . . . Page 9

Equipment Features and Control Elements . . . . Page 10-11

Technical Specifications . . . . . . . . . . . . . . . . . . . Page 12

Installing the BRAX Amplifiers

In order to maintain the quality of this product and ensure

safe operation, we recommend that our amplifiers be

installed by an authorized BRAX dealer. Installation by a

qualified and accredited technician will qualify you for our

special lifetime warranty. Your BRAX dealer will also

assist you in selecting the correct additional components

and in ensuring that proper consideration is given to all the

safety and sound-related aspects.

Important:

Before commencing installation, disconnect the car

battery at the negative terminal. Once again we would

urge you to have the installation work carried out by a spe-

cialist, as verification of correct installation and connec-

tion of the unit is a prerequisite for warranty cover of the

BRAX by AUDIOTEC FISCHER Germany.

Install your amplifier at a dry location in the car where

there is sufficient air circulation to ensure adequate cooling

of the equipment. Also ensure that there is sufficient clearance

available for making the cable connections and operating

the controls.

For safety reasons, the amplifier must be secured in a pro-

fessional manner. This is performed by means of four

fixing screws (see Fig. 2) 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

surface - otherwise these could be damaged. You should be

aware of the fact that such components may also be con-

cealed in the double-skin trim panels/moldings.

Fig. 1: Installation in the car

Installation and Connection of BRAX Amplifiers X 1400 and X 2400

The above amplifier models may only be installed in

motor vehicles which have a 12-volt negative terminal

connected to the chassis ground. Any other system could

cause damage to the amplifier and the electrical system of

the vehicle.

The positive lead from the battery for the complete system

should be provided with a line fuse at a distance of max. 30 cm

from the battery. The amperage rating of the fuse is calculated

from the maximum total current input of the car/vehicle

hifi system.

Never bridge fuses or replace them with fuses with a

higher amperage rating as such actions could lead to

the destruction both of the amplifier and the entire

electrical system of the vehicle.

As already mentioned, the negative lead from the vehicle

battery to the chassis should be disconnected in order to

prevent the occurence of short-circuiting. Install the cab-

ling 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 body

work), all the 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/petrol lines etc.).

In order to avoid cross-talk distortion, audio cables should

never be laid together with electrical leads (with the excep-

tion of the screened BRAX POWER TRAX power supply

cables).

In order to ensure safe installation, use only high-quality

connection materials, and comply with the recommended

minimum cross sections/gauge values of the cables for the

individual amplifier modules.

As an aid to calculating the cross-sectional requirements of

power cables which are not longer than 5 m, we advise a

figure of max. 5 A per mm2. For the X 1400 BRAX ampli-

fiers described, we recommend a minimum cross section

of 12 mm2 /gauge 7, and for the X 2400 a minimum cross

section of 20 mm2 /gauge 5 for the positive 12-volt supply

lead and for the ground (chassis) cable. In order to ensure

optimum sound quality and interference-free music repro-

duction, we recommend that installation be performed

with BRAX POWER TRAX power supply cables. The

remote lead should have a cross section of at least 1 mm2.

Connection of the Power Supply

The +12 volt power supply cable (see Fig. 2) should be

connected directly to the positive terminal of the battery. A

fuse should also be provided at a distance of max. 30 cm

from the battery. The amperage rating of the fuse is calcula-

ted from the maximum total current input of the car/vehicle

hifi system. The fuse holder appertaining to the amplifier is

supplied with the amplifier module. This must be installed at

a distance of max. 20 cm from the positive terminal of the

amplifier and equipped with the original BRAX fuse provided.

The fuse ratings are: for amplifier

X 1400 = 60 A,

for amplifier X 2400 = 100 A.

Failure to comply nullifies the warranty.

The ground (chassis) cable (see Fig. 2) should be connec-

ted to the central ground reference point (this is located

where the negative terminal of the battery is grounded at

the metal chassis of the vehicle), or to a bright bare-metal

location on the vehicle chassis, i.e. an area which has been

cleaned of all paint residues. It must be ensured that resi-

stance values to the power sources (alternator, generator,

battery) are minimized as excessive resistance can appre-

ciably affect the audio quality and dynamics of the system.

The „Remote“ cable (see Fig. 2) is connected to the

„Remote“ connection or the automatic antenna connection

of the control unit (tuner/radio). The antenna connection is

only activated if the control unit is switched ON. This

ensures that, with the control unit switched off, the ampli-

fier is also switched off to safe the battery.

Fig. 2

1 2 3

4 5

1Control lead (Remote)

Positive (+) 12V cable via fuse to battery

Ground cable

Positive (+) connection BRAX Power Stabilizer

Negative (-) connection BRAX Power Stabilizer

Connection of the Signal Cables

The BRAX amplifiers have RCA connectors for cinch

cables which are connected to the pre-amplifier outputs or

line outputs of the control unit (tuner/radio). Ask your

dealer for the appropriate BRAX accessories.

Fig. 3

Front left

Rear left

Front right

Rear right

To Line Output Control Unit

Important!

Never connect the speaker cables to the vehicle chassis.

This can destroy your amplifier. Ensure that all the speaker

systems are connected in-phase, i.e. plus to plus and minus

to minus. The positive terminal is indicated on most spea-

kers. In addition, the amplifiers may be operated in

2-channel mode (see Fig. 5), 3-channel mode (see Fig. 6)

and 4-channel mode (see Fig. 7).

The mono/stereo selector switch is located at the bottom

of the amplifier. The function of the switch is described on

a label at the bottom of the amplifier (see Fig. 4).

Fig. 5: 2-Channel Mode

Fig. 6: 3-Channel Mode

Fig. 7: 4-Channel Mode

Connection of the Speaker Cables

Mono InputMono Input

Front right Rear right

Mono Input

Rear right

Fig. 4: Stereo/mono selector switch

Position of selector switch at the bottom Rear = Mono

of the amplifier: Front = Mono (see Fig. 4)

Position of selector switch at the bottom Rear = Mono

of the amplifier: Front = Stereo (see Fig. 4)

Position of selector switch at the bottom Rear = Stereo

of the amplifier: Front = Stereo (see Fig. 4)

Circuit Control Cards

Removal of a Circuit Control Card

1. Unlock the catches left and right on the base of the card

(Fig. 8).

High End 4-Channel Car Amplifier

Made in Germany

2400

1400

Fig. 12

The operating range of the amplifier is determined by

replaceable Circuit Control Cards (CCC). If no special

requirements regarding the CCC’s are specified when

ordering, the amplifier is supplied as standard with CCC 1.

CCC 1 is plugged in at socket position 3 which means that

the amlifier is operating in the full range (see list on page

8). If CCC 1 is inserted at socket position 1 or 2, as descri-

bed in Fig. 8 to 12, the amplifier operates with a subsonic

filter having a rate of change of 18 dB/Oct. from 45 Hz.

The various Circuit Control Cards available are indicated

in the list on page 8.

Example: If you wish to use the module as a subwoofer

amplifier, with the subwoofer being operated at 90 Hz, you

find the corresponding Circuit Control Card from the list

(in this case CCC 5) and insert the card in your BRAX

amplifier at position 2 of that channel which is to control

the subwoofer - the right channel in the case of the mono

mode (bridge mode). Now the amplifier will only process

frequencies up to 90 Hz, with any frequencies above that

value being suppressed at the rate of change of 18 dB/Oct.

At position 1 the amplifier will only process frequencies

higher than 90 Hz.

Handling the Circuit Control Cards

Inserting the Circuit Control Card

1. Choose the position number from the CCC list which

corresponds to the required function of the amplifier, and

insert the card in the base so that the position number on

the card is located at the top at the housing cover next to

the arrows according to the channels (see Figs. 11 and 12).

2. Insert the card at an angle of approx. 15°

so that it fits properly into the socket.

Press the card between the clips so that

it is secure in the base (Fig. 10).

2. Tilt the card approx. 15° in order

to detach it from the base (see Fig. 9)

Fig. 8

Fig. 9

Fig. 11

Fig. 10

List of Circuit Control Cards (CCC)

CCC 2 B 50 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 3 B 70 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 4 B 80 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 5 B 90 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 6 B 100 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 7 B 120 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 8 B 150 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 9 B 180 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 10 B 200 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 11 B 400 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 12 B 600 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 13 B 800 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 14 B 1000 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 15 B 1200 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 16 B 2400 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

CCC 17 B 4200 highpass 18 dB/Oct. lowpass 18 dB/Oct. full range

Card No. Type Frequency CCC Position No.

in Hz 1 2 3 4

CCC 1 A 45 subsonic 18 dB/Oct. full range

CCC 18 C 50 highpass 18 dB/Oct.