Input Level control
The input level control, 5V – 0,25 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 to 5V.
The high pass filter
blocks
very low
frequencies from reaching
the speakers. It is mostly
used to protect small
speakers ( like 5 inch and
smaller ) from deep bass.
High Pass filter (HPF) - All models
The low pass filter is
mostly used for
subwoofers. It will allow
low frequencies only and
blocks higher frequencies.
A typical setting is 60 – 70
Hz.
The
X-A10
is a mono channel amplifier mainly
intended for use with one or two subwoofers but can
also be used in full range mode.
The amplifier has the following filters / features:
Lowpass filter adjustable between 50 and 250 Hz,
the filter can be switched off.
Highpass filter selectable FULL - 70 Hz - 90 Hz.
Internal subsonic filter fixed to 25 Hz.
The
XA20
is a 2-channel amplifier. Can be used
for a pair of stero speakers or a subwoofer connted
in mono bridge mode.
The amplifier have the following filters / features:
Lowpass filter adjustable from 50 to 200 Hz, the
filter can be switched off.
Highpass filter selectable FULL - 70 Hz - 90 Hz.
Internal subsonic filter fixed to 25 Hz.
6
The
X-A40
is a 4-channel amplifier for use with a
front system and a subwoofer, or two front systems.
The amplifier has the following filters / features:
Lowpass filter adjustable from 50 to 100 Hz, the
filter can be switched off.
Highpass filter selectable OFF - 70 Hz - 90 Hz.
The filter can be turned off for running the amplifier
in full range.
Internal subsonic filter fixed to 25 Hz.
The
X-A30
is a 3-channel amplifier for use with a
front system and a subwoofer.
The amplifier has the following filters / features:
Stereo section (front channels):
High pass filter selectable FULL - 70 Hz - 90 Hz.
Mono section (Sub channel):
Lowpass filter adjustable between 50 and 100 Hz.
Internal subsonic filter fixed to 25 Hz.
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. Increase the input
level control on the amplifier ( 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.
Set the swich in position 70 Hz or 90 Hz to activate
the filter. Test which setting sounds best.
The filter can be set at
FULL
position if you want to
run the amplifier in full range mode without limiting
the frequency range.
Set the switch in
ON
po-
sition to activate the filter.
Set the switch in
OFF
position if you want to run
the amplifier in full range
mode. X-A30 has no
switch.
The frequency range of
the LP-filter is different on
each model, see the
drawings on the right.
Subsonic filter
- All models
All models include a
Subsonic filter that
blocks
the very deepest frequencies from reaching the
speakers. The cutoff frequency is 25 Hz.
The filter is internally connected on all models and
can not be switched off.
Features / crossovers
Low Pass filter (LPF)
Crossovers/filters and other features
on each model
X-A20
X-A30
X-A40
X-A10
Содержание X-A10
Страница 7: ...7 Crossovers filters and other features on each model...
Страница 15: ......
