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Speaker wiring MRA 31
Two fullrange
speakers to
channel A/B
With the HPF-filter in OFF
position the amplifier allows
the speakers to play
fullrange. If you for some
reason want to limit the low
bass reproduction turn on the
HPF-filter. The typical setting
is then around 60 – 80 Hz.
HPF
90Hz
120Hz
Off On
50Hz 150Hz
One (or two)
4 ohm
+
subwoofers
to channel C
Filter settings channel C
The subsonic filter takes away the very deepest
frequencies. Turn on the subsonic filter if you want
to remove these frequencis.
The LPF will allow low frequencies only and blocks
higher frequencies. A typical setting is 60 – 80 Hz.
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 the bass sound 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.
NOTE: This function is intended for car use and may
not be fully functional in boats. Set the control to 0.
MRA31
+ C CH -
-
7
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