Manual Blaupunkt tha 275 pnp (page 7 of 52) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Turkish, Spanish, Finnish)

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THA 275 PnP

+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.

Note:

If the connection is made using a PnP-INPUT cable, the

switch-on is performed automatically.

! As a special feature, +12 V/200 mA are now available

as output switching voltage at the remote input/output

after automatic switch-on.

High-level connections (via PnP High-Input

cable only)

The amplifier features high-level connections (PnP

Input) to be able to connect to radio devices without

pre-stage outputs . This allows for a direct connection

at the loudspeaker output of the radio device.

Note:

Unused Out/Input connectors from the PnP cable must

be connected (see Fig. 2).

Direct Aux Input connection

Connection option in case of missing or occupied

AUX input at the car sound system

Various NF sources, such as an MP3 player or a

mobile navigation, can be directly connected via a

3.5-mm jack plug at the Direct Aux Input. All signal

sources can be listened to at the same time and their

volume is adjusted at the respective source device.

Note:

All NF sources must be switched off during instal-

lation and connection!

Installing the jack plug cable

Please use our 5-m jack plug cable with order

number 7 607 001 525 for the connection.

One of its special features is an on/off switch.

Switch position OFF (•):

For installation and deinstallation and no connected

NF source.

Switch setting ON: (I / II):

Only after an NF source has been connected.

Caution:

For the connection, always adjust the volume con-

trol to minimum and switch off the ampliﬁ er.

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.

The adjustment range is from 0.3 V to 8 V.

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 polarisa-

tion 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

Note: Not possible for connection via PnP cable.

The THA 275 PnP ampliﬁ er allows for switching the

channels 1+2 as bridge connection. This allows the

ampliﬁ er to be used for one or several subwoofers or

a mid-range driver. 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 THA 275 PnP, the type of frequency crossover

(i.e. "Low Pass" or "Hi-Pass") and the desired crossover

frequency can be adjusted. For example, if a pair of

subwoofers is to be connected, low-pass settings are re-

quired. The crossover frequency is dependent upon the

frequency range of the loudspeakers (see recommended

frequency range of the loudspeakers).

High-Pass

At a setting of 250 Hz, the ampliﬁ er has a frequency

range of 250 Hz to 30,000 Hz.

Low-pass frequency control

This control is active if the switch is in the position

"Low-Pass", and allows for setting the desired crossover

frequency.

THA_275_0607.indd 7THA_275_0607.indd 7 07.06.2007 14:06:00 Uhr07.06.2007 14:06:00 Uhr

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Blaupunkt tha 275 pnp Manual

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