Manual Blaupunkt gta 250 (page 9 of 38) (English, German, Dutch, French, Italian, Portuguese, Swedish, Spanish)

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GTA 250

Positive/negative connection

We recommend a cable cross-section of not

less than 6 mm

. Run a standard commer-

cial positive cable to the battery and con-

nect 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 in-

duced noise (car body bolt, body panel) -

not to the negative 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 pro-

tect 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. 4.

+12V

Connect remote amplifier connec-

tion 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 sensi-

tivity of the final stage to be matched to the

output voltage of your car radio preamp out-

put.

The range of adjustment extends from 0.1 V

to 8 V.

Adjust the input sensitivity in accordance with

the manufacturer’s specifications when con-

necting the amplifier to other radios.

Important:

Turning the Level control clockwise increas-

es the input sensitivity 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 volume

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 cor-

rect polarity is essential for good bass re-

production. Ensure therefore when connect-

ing that the positive (+) amplifier terminal is

connected to the positive (+) loudspeaker

terminal. The same applies to the negative

(-) terminals. The left-hand amplifier chan-

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Blaupunkt gta 250 Manual

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