Blaupunkt GTA 470 DSP - Subwoofer DSP Settings; Compressor and Filter Controls; Remote Control Operation

GTA470
DSP
Example:
At a setting
of
80Hz,
the amplifier
has
a frequency range
of
1 0
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 amplified.
- F/R
SUBSONIC
switch and F/R
SUBSONIC control
To
avoid interferences from extremely
low
frequencies,
you
can
use
the
subsonic filter
to
limit
the low-frequency
response
of
the
device. The setting
of
the subsonic filter
suppresses
all
frequencies below the defined 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)
orR(=
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)
8
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
80Hz,
the amplifier
has
a frequency range
of
1
0
Hz
to
80
Hz.
SUBSONIC control (SUBWOOFER)
To
avoid interferences from extremely
low
frequencies,
you
can
use
the
subsonic filter
to
limit
the low-frequency
response
of
the
device. The setting
of
the subsonic filter
suppresses
all
frequencies below the defined 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 step
less
change
of
the
phase posi-
tion
of
the
subwoofer from
0°
to
180°. It
is
used for the
fine
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
filter separately for the
FRONT
and
REAR
loudspeakers and
the
connected subwoofer. A
high
value ensures a steep
filter 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
amplifier
We
recommend the
following
sequence for
the
initial setup
of
the amplifier:
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 first, then the
bass.
Setting
options on
the
remote
control
(optional
equipment)
For
the
GTA
470
DSP
amplifier,
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.