Manual Blaupunkt GTA 470 DSP (page 8 of 52) (English, German, French, Italian, Polish, Portuguese, Spanish)

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GTA 470 DSP

Example:

At a setting of 80 Hz, the ampli er has a frequency range

of 10 Hz to 80 Hz.

"Full Range" (switch setting: FULL)

In this switch setting, the frequency control is deactivated

and the entire frequency spectrum is being ampli ed.

– F/R SUBSONIC switch and F/R SUBSONIC control

To avoid interferences from extremely low frequencies,

you can use the subsonic  lter to limit the low-frequency

response of the device. The setting of the subsonic  lter

suppresses all frequencies below the de ned frequency.

Example:

At a setting of 40 Hz, the frequency range from 0 Hz to

40Hz is being suppressed.

This control is used to control the connected FRONT as

well as REAR loudspeakers. If the F/R SUBSONIC switch is

set to F (= FRONT loudspeaker) or R (= REAR loudspeaker),

it is possible to set the frequency crossover for the front

or the rear loudspeakers. Even if the F/R SUBSONIC switch

is changed over (e.g. from F to R), the value for the re-

spective other loudspeaker group remains stored in the

integrated DSP.

Example:

The switch is changed to the F position and the frequency

crossover 40 Hz is set at the control. After the change-

over to the R position, the value 50 Hz is set. If it is now

changed back to the F position, the control remains at the

value 50 Hz set last. If the control is now being moved,

the adjustment does not start at the stored 40 Hz, but at

the displayed 50 Hz.

DSP sound settings (SUBWOOFER)

The following options are available to optimise the sound

for the use of a subwoofer:

– X-OVER control (SUBWOOFER)

For the GTA 470 DSP, the type of frequency crossover

("Low-Pass") can be adjusted. Select the cut-o frequency

up to which higher frequencies should be blocked. Only

frequencies that are below the cut-off frequency are

passed on to the loudspeakers.

Example:

At a setting of 80 Hz, the ampli er has a frequency range

of 10 Hz to 80 Hz.

– SUBSONIC control (SUBWOOFER)

To avoid interferences from extremely low frequencies,

you can use the subsonic  lter to limit the low-frequency

response of the device. The setting of the subsonic  lter

suppresses all frequencies below the de ned frequency.

Example:

At a setting of 40 Hz, the frequency range from 0 Hz to

40Hz is being suppressed.

– PHASE control (SUBWOOFER)

This control allows the stepless change of the phase posi-

tion of the subwoofer from 0° to 180°. It is used for the

 ne tuning with the other connected loudspeakers and if

set correctly, it can prevent any possibly occurring mutual

cancellation of low frequencies within the audio system.

F/R COMPRESSOR and SUB COMPRESSOR

switches

This function is used to protect the connected loudspeakers

and subwoofer. If the switch is in the ON position, the out-

put volume is reduced by 10 dB. The GTA 470 DSP features

separate switches for the connected loudspeakers (F/R

COMPRESSOR) and subwoofer (SUB COMPRESSOR).

FRONT dB/Oct, REAR dB/Oct and SUB dB/Oct

switches

These switches are used to set the attenuation of the installed

 lter separately for the FRONT and REAR loudspeakers and

the connected subwoofer. A high value ensures a steep

 lter slope, which translates to a strict separation between

blocked and forwarded frequencies. A low value ensures

a soft separation, which translates to a gradual transition

from blocked to forwarded frequencies. The settings 18, 24

or 48dB per octave are available for attenuation.

Caution:

If the switches FRONT and/or REAR are set to FULL, the

switches FRONT dB/Oct and REAR dB/Oct are without

function.

Initial setup of the ampli er

We recommend the following sequence for the initial setup

of the ampli er:

1. Settings for the front loudspeakers

2. Settings for the rear loudspeakers

3. Settings for the connected subwoofer

You should always proceed in the same way, e.g. setting the

treble  rst, then the bass.

Setting options on the remote control

(optional equipment)

For the GTA 470 DSP ampli er, the GTA RC01 cable remote

control (1 101 210 001 001) is available as an accessory. It

can be used to perform the following settings:

– DELAY control and A/B (FRONT/REAR) switch

This allows setting a sound delay for the two left loud-

speakers (front and rear loudspeakers separately). The

control has 256 levels, each of the levels corresponds to

a distance of 7 mm. The maximum adjustable value is

approx. 1.8 metres.

If the A/B switch is set to A (= FRONT loudspeaker) or

B (= REAR loudspeaker), it is possible to set the delay value

for the front left or the front rear loudspeaker. Even if the

A/B switch is changed over (e.g. from A to B), the value for

the respective other loudspeaker group remains stored

in the integrated DSP.

Example:

The switch is set to position A and the delay of 1.8 metres is

set at the control. After the change-over to the B position,

the value 1metre is set. If it is now changed back to the

A position, the control remains at the value 1 metre set

last. If the control is now being moved, the adjustment

does not start at the stored 1.8 metres, but at the dis-

played 1 metre.

GTA_470_DSP_13LG.indd 8GTA_470_DSP_13LG.indd 8 24.08.12 15:4924.08.12 15:49

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Blaupunkt GTA 470 DSP Manual

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