Bedienungsanleitung Blaupunkt GTA 260 (Seite 6 von 44) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Polnisch, Türkisch, Schwedisch, Finnisch)

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GTA 260

Stereo Mode

RMS power

2 x 90 Watt / 2 Ω Fig. 4, 5

RMS power in accordance with CEA-2006

(< 1% dist. / +14.4V)

Frequency

response

10 Hz - 30,000 Hz

Signal-to-noise ratio

> 90 dB @ RMS power

Signal-to-noise ratio

> 73 dB @ 1 W / 1kHz

Distortion factor (RMS)

< 0.05%

Stability

2 Ω (4 Ω in bridge mode)

Input sensitivity

0.1–8 V

Low-pass ﬁ lter

(Low Pass)

50-250 Hz

High-pass ﬁ lter

(High Pass)

80 Hz

Bass boost

0 dB to +12 dB

Dimensions

W x H x D (mm)

W x H x D (")

197 x 52 x 296

7.8" x 2.1" x 11.7"

Plus / minus connection

- We recommend a minimum cross section of 6 mm

- Route commercially available plus cables to the

battery and connect via fuse holder.

- Use cable glands for holes with sharp edges.

- Securely fasten commercially available minus

cables to a noise-free earth point (chassis screw,

chassis metal) (not to the minus pole of the bat-

tery).

- Scrap the contact surfaces of the earth point until

they are bright and grease with graphite grease.

Integrated fuses (Fuse)

The fuses integrated in the ampliﬁ er (Fuse) protect the

power ampliﬁ er and the entire electrical system in case

of an error. If a replacement fuse is used, never bridge

fuses or replace them with a type with higher current.

Connection examples

Connection of the voltage supply Fig. 2

Connection to car sound system with

cinch output Fig. 3

Loudspeaker connections Fig. 4/5/6

+12V

Remote connection of the ampliﬁ er with switchable +12 V

voltage source.

This allows the ampliﬁ er to be switched on and off using

the on/off-switch of the radio device.

Level control

The Level control is used to adjust the input sensitivity

of the power ampliﬁ er to the output voltage of your car

sound system preampliﬁ er output.

The adjustment range is from 0.1 V to 8 V.

If a car sound system of a third party manufacturer is

connected, the input sensitivity must be adjusted cor-

responding to the manufacturer data.

A few important explanations in this context:

By turning the control clockwise, the input sensitivity of

the ampliﬁ er and, therefore, also the volume increases.

However, this is not a volume control; no further ampli-

ﬁ er output can be achieved in the end position, even if it

may sound like that at the beginning. The system merely

increases the volume faster if the volume control of the

car sound system is turned up.

Loudspeaker connections

(If the ampliﬁ er is to be jumpered, continue with the sec-

tion "Bridged loudspeaker connections" at this point).

As with every audio component, the correct polari-

sation of ampliﬁ er and loudspeakers is of essentially

importance for a good bass response. For this reason,

ensure that the positive (+) connection of the ampliﬁ er

is connected with the positive connection (+) of the

loudspeaker; the same applies to the negative (-) con-

nections. In addition, the left ampliﬁ er channel must

be connected with the left loudspeaker and the right

ampliﬁ er channel with the right loudspeaker.

Bridged loudspeaker connections

The GTA ampliﬁ er can also be bridged for a mono

conﬁ guration. This allows the ampliﬁ er to be used for

one or several subwoofers or mid-range drivers. In this

conﬁ guration, the ampliﬁ er combines the right and left

channel to a single-channel output (mono output).

Note:

The ampliﬁ er can add the right and left signal informa-

tion only if the right as well as the left RCA connection

were carried out.

Caution:

In a bridge circuit, the ampliﬁ er load must be 4 ohm

or higher. A lower load leads to an overheating or

switch-off of the ampliﬁ er and can cause permanent

damages.

Adjusting the type and range of the frequency

crossovers

With the GTA 260, the type of frequency crossover (i.e.

"Low Pass" or "Hi-Pass") and the desired entry frequency

can be adjusted. For example, if a pair of subwoofers is to

be connected, the low-pass settings shown are required

(Fig. 3). The entry frequency is dependent upon the

frequency range of the loudspeakers (see recommended

frequency range of the loudspeakers).

GTA_260_181207.indd 6GTA_260_181207.indd 6 18.12.2007 13:58:24 Uhr18.12.2007 13:58:24 Uhr

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