Input Level Control; Bass Boost,Crossovers, Etc - DLS X-program X-D10 Owner's Manual

Features / crossovers

Input Level control

The input level control, 6V – 0,3 V,
matches the output of your radio to
the input of the amplifier. After instal-
lation is complete, make sure the in-
put of the amplifier is turned down all
the way ( counter-clockwise at 6V ).
Play a CD, make sure all bass or treble settings or
equalizer are flat, and turn the volume of the radio
up until you just start to hear distortion. Turn the
volume control down just a bit. On the amplifier
increase the input level control ( clockwise or to the
right ) until you just start to hear distortion, then back
the level control just a bit. Now your radio and
amplifier levels are matched.
Bass boost XD10, XD20, XD25, XD40
Bass boost is used to increase the
bass volume at a low frequency.
frequencies. You can select the
amplification between 0 dB ( no
amplification ) and +18 dB ( full
amplification ).
This function is used to compensate for
the bass box function and to adjust for
your own taste of bass. Set level control
at 0 dB if you want it to be inoperative.
Phase control X-D10, D20, D25, D-30
The phase control can be set
continuously from 0 - 180 degrees.
This function is used together with
subwoofers. This is very useful when
you want to adjust the bass sound for
best front stage image. Start at 0 and
turn the control slowly clockwise until
you experience that the bass sound is
coming from the front. If you don't get
the result you want, also try to phase
reverse the subwoofer connections and
make a new adjustment.
On models X-D20, X-D25 the phase
control and LP-filter can be switched
on-off.
6
Subsonic filter X-D20, X-D25
The Subsonic filter
Level
blocks the very deepest
frequencies from reaching
the subwoofers. It can be
6V 0,3V
set from 15 to 150 Hz and
can be switched on / off.
A typical setting for
subwoofer use is 25-30
Hz
Subsonic filter X-D30
The Subsonic filter blocks the very
deepest frequencies from reaching the
subwoofers. It can be switched on / off.
The cutoff frequency is 25 Hz.
High Pass filter X-D30, X-D40
Bass boost
The high pass filter
blocks
0
+18 dB
frequencies from reaching
the speakers. It is mostly
used at say 60 Hz to
protect small speakers (
like 6 inch and smaller )
from deep bass.
Set the swich in position HP to activate the filter.
The filter can also be used as subsonic filter to remove
the very deepest frequencies from a bass box. The
typical setting is then around 25 – 50 Hz.
The slope of the High Pass filter is 12 dB / octave.
The filter can be switched off (position Flat) if you
Phase
want to run the amplifier in full range mode.
Low Pass filter X-D10, D20, D25, D30
0
o
180
The low pass filter is
mostly
subwoofers. It will allow
low frequencies only and
blocks higher frequencies.
A typical setting is 50 –
70 Hz.
On X-D30 the frequency is variable from 30 Hz to
150 Hz.
Low Pass filter X-D40
The low pass filter is
mostly
subwoofers. It will allow
low frequencies only and
blocks higher frequencies.
A typical setting is 50 –
70 Hz.
Set the switch in position LP to activate the filter.
Set the filter switch in FLAT position if you want to
run the amplifier in full range mode.
45 Hz 80 Hz
15 Hz
150 Hz
very low
Flat
HP LP
used for
150 Hz
used for
Flat
HP LP
Off On
Subsonic
Subsonic
On
Off
Crossover
50 Hz
500 Hz
Crossover
250 Hz
500 Hz
50 Hz
Crossover
50 Hz
500 Hz