Bedienungsanleitung Blaupunkt gta 480 (Seite 3 von 13) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Portugiesisch, Spanisch, Schwedisch)

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Safety precautions

Instructions for installation and connection

Fit a fuse in the amplifier power line no more than 30 cm from the vehi-

cle battery, in order to protect the battery in the event of a short-circuit

between it and the power amplifier. The amplifier’s own fuse protects

the amplifier itself, but not the car battery. Disconnect the negative

terminal of the battery before carrying out installation and connec-

tion work.

Observe the vehicle manufacturer’s safety instructions (regarding air-

bags, alarm systems, trip computers, vehicle immobilisers).

The final stage must be installed professionally for reasons of safety.

The mounting surface must be suitable for the screws provided, and

must provide firm support.

When drilling holes, take care to avoid damage to vehicle components

(battery, cables, fuse boxes).

Fit the amplifier in a suitable location, e.g. beneath the seats or in the

trunk (Fig. 1). The mounting location must also be dry, and provide suf-

ficient ventilation for cooling of the amplifier. Use cable grommets when

passing cables through holes with sharp edges. Use loudspeakers with

an impedance of 2 to 4 Ω (see table or installation drawing). Observe

the max. power handling specifications (music output). Do not connect

the loudspeakers to ground; only use the terminals provided. The cross-

section of the positive and negative cable must be at least 6 mm

GTA 480 amplifier

The amplifier is suitable for connection to car radios with Cinch connec-

tor. Use the Blaupunkt ISO Cinch adapter to connect the amplifier

to car radios with ISO connector. (7 607 893 093/ 7 607 855 094)

Applications and loudspeaker connection

Quadro-Mode Max Power 4 x 80 Watt / 4 Ω Fig.3

Stereo-Mode Max Power 2 x 220 Watt / 4 Ω Fig.6

Quadro-Mode RMS Power 4 x 40 Watt /4 Ω Fig.3

Stereo-Mode RMS Power 2 x 110 Watt /4 Ω Fig.6

Frequency response 10 Hz - 26.000 Hz

Signal-to-noise ratio > 80 dB

Stability 2 Ω

Inputsensitivity 0,3 - 8 V

Low-pass filter 40 - 160 Hz

High-Pass filter 40 - 600 Hz

Dimensions

D x W x H (mm) 290 x 57 x 243

Positive/negative connection

We recommend a cable cross-section of not less than 6 mm

. Run a

standard commercial positive cable to the battery and connect to the

fuse holder. Use cable grommets when passing cables through holes

with sharp edges. Bolt a standard commercial negative cable to a ground

point free of induced noise (car body bolt, body panel) - not to the neg-

ative battery pole. Clean the contact surface of the ground point down

to bare metal and coat with antiseize graphite petroleum.

Integral fuses

The integral fuses within the amplifier protect the final stage and the

entire electrical system in the event of a fault. Never bridge fuses or

replace fuses with a higher current rating.

Example connections

Power supply connection ............................................................ Fig. 2

Connection of car radio with cinch output ................................... Fig. 3

Loudspeaker connections ........................................................ Fig. 3-6

+12V

Connect remote amplifier connection to switchable

+12 V power source.

This enables the amplifier to be switched on and off with the radio’s On/

Off switch.

Level control

The Level control enables the input sensitivity of the final stage to be

matched to the output voltage of your car radio preamp output.

The range of adjustment extends from 0.3 V to 8 V.

Adjust the input sensitivity in accordance with the manufacturer’s spec-

ifications when connecting the amplifier to other radios.

Important: Turning the Level control clockwise increases the input sen-

sitivity of the amplifier, and thereby also the volume. The Level control is

however not a volume control; an increase in volume is not achieved in

the maximum position, even if this subjectively appears to be the case.

The system merely increases the volume more quickly when the vol-

ume is turned up on the radio.

Loudspeaker connections

(If the amplifier is to be connected in a bridged mode, proceed with the

section “Bridged loudspeaker connections”.)

As with any audio component, connection of the amplifier and speakers

with the correct polarity is essential for good bass reproduction. Ensure

therefore when connecting that the positive (+) amplifier terminal is con-

nected to the positive (+) loudspeaker terminal. The same applies to the

negative (-) terminals. The left-hand amplifier channel must also be con-

nected to the left-hand loudspeaker and the right-hand amplifier chan-

nel to the right-hand loudspeaker.

Bridged loudspeaker connections

The GTA can also be bridged in a mono configuration. This enables you

to use the amplifier for one or more subwoofer(s) or a mid-range speak-

er. In this configuration the amplifier sums the right-hand and left-hand

channels, delivering a single channel (mono) output.

Note: The amplifier can sum the right- and left-hand signal information

only if both the right- and left-hand RCA connections have been made.

CAUTION: The amplifier must be presented with a load of 4 Ohms

or higher in bridged mode. A lower load will cause the amplifier to

overheat or switch off. This can lead to permanent damage of the

unit.

GTA 480

The type of crossover (i.e. “low-pass” or “hi-pass”) and the desired cros-

sover frequency can be selected on the GTA 480. If, for example, you

wish to drive a pair of subwoofers, connect in accordance with the low-

pass diagram (fig. 2a).The crossover frequency is dependent upon the

loudspeaker frequency range (consult the loudspeaker manufacturer’s

data for the recommended frequency range).

“High- Pass” frequency control

This control is active when the switch is in the “Hi-pass” position, and

permits selection of the desired crossover frequency. Example: at a of

40 Hz, the loudspeaker has a frequency range of 40 Hz to

26.000 Hz.

“Low-pass” frequency control

This control is active when the switch is set to “Low-pass” and permits

selection of the desired crossover frequency. Example: at a setting of

40 Hz, the loudspeaker has a frequency range of 10 Hz to 40 Hz.

Operating indicator (POWER / PROTECTION)

Green lamp: Power amp on, regular operating condition

Red lamp: Power amp has been switched off electronically, due to a fault

or failure.

This information is subject to change without notice!

Blaupunkt gta 480 Seite 3

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