Blaupunkt GTA 470 DSP Manual De Instrucciones página 8

GTA 470 DSP
Example:
At a setting of 80 Hz, the amplifi 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 amplifi ed.
– F/R SUBSONIC switch and F/R SUBSONIC control
To avoid interferences from extremely low frequencies,
you can use the subsonic fi lter to limit the low-frequency
response of the device. The setting of the subsonic fi lter
suppresses all frequencies below the defi 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-off 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 amplifi 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 fi lter to limit the low-frequency
response of the device. The setting of the subsonic fi lter
suppresses all frequencies below the defi 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
fi 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.
8
GTA_470_DSP_13LG.indd 8 GTA_470_DSP_13LG.indd 8
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
fi lter separately for the FRONT and REAR loudspeakers and
the connected subwoofer. A high value ensures a steep
fi 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 amplifi er
We recommend the following sequence for the initial setup
of the amplifi 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 fi rst, then the bass.
Setting options on the remote control
(optional equipment)
For the GTA 470 DSP amplifi 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.
24.08.12 15:49 24.08.12 15:49