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Two fullrange speakers and one subwoofer to
RA40
Rear or front speakers Rear subwoofer
Filter settings channel 3 & 4
With the HP-filter in OUT position the amplifier
allows the speakers to play fullrange. If you for
some reason want to limit the low bass
reproduction switch on the HP-filter. The typical
setting is then around 60 – 80 Hz.
Speaker wiring RA40
RA40 is a 4-channel stereo amplifier. It can be
connected either as a stereo amplifier for two pairs
of fullrange speakers, or as a 3 channel amplifier
with one pair of fullrange speakers in stereo, and
one subwoofer connected in mono bridge mode.
Four fullrange speakers to RA40. One pair in
front and one pair in rear.
Front speakers Rear speakers
Filter settings channel 1 & 2
With the HP-filter in OUT-position the amplifier
allows the speakers to play fullrange. If you for
some reason want to limit the low bass
reproduction switch on the HPF-filter (IN-position).
The typical setting is then around 60 – 80 Hz.
The LP-filter switch should be in OUT-position.
Filter settings channel 3 & 4
With the HP-filter in OUT-position the amplifier
allows the speakers to play fullrange. If you for
some reason want to limit the low bass
reproduction switch on the HP-filter. The typical
setting is then around 60 – 80 Hz.
RA40
Filter settings channel 1 & 2
The LP-filter will allow low frequencies only and
blocks higher frequencies. A typical setting is 70 –
90 Hz. When used with a subwoofer the switch
should be in IN-position. Set the LP-filter to 70-90
Hz.
BASS is used to increase the bass volume with a
center frequency of 40 HZ. You can select the
amplification between 0 dB ( no amplification ) and
+18 dB (full amplification).
The phase control can be set continuously from
0 - 180 degrees. This is very useful when you want
to adjust the bass sound for best front stage image.
Start on 0 and turn the control slowly clockwise
until you experience that the bass sound is coming
from the front. If you dont get the result you want,
also try to phase reverse the subwoofer
connections and make a new adjustment.
-
+
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