XM20
Speaker wiring XM20
Two fullrange speakers to channel 1 / 2
One 4 ohm subwoofer bridged
6
For power wiring, see page 3-4
For high or low level input wiring, see page 4
NOTE!
Minimum amplifier load is 2 ohm in stereo mode,
lower impedances may damage the amplifier.
NOTE!
Minimum speaker impedance in bridged connec-
tion is 4 ohm, this connection gives a 2 ohm load
with a 4 ohm subwoofer (the load is halved when
connected in bridge mode).
Do
NOT
use subwoofers with lower impedance
than 4 ohm. Connect s to CH2+ and
speaker - to CH1
-.
Filter settings CH 1/2 for 2-channel stereo use
The high pass filter
(HPF)
blocks
very low frequencies
from reaching the spea-
kers. It is mostly used to
protect small speakers ( like
5 inch and smaller ) from
deep bass.
Set the swich in position
HPF
to activate the filter.
Adjust with the
HPF control
after your own taste,
a normal setting is 50 - 70 Hz.
The filter can be set at
FULL
position if you want to
run the amplifier in full range mode without limiting
the frequency range.
Filter settings CH 1/2 for subwoofer use
The low pass filter
(LPF)
is mostly used for subwoo-
fers. It will allow low fre-
quencies only and blocks
higher frequencies.
A typical setting is 60 –
70 Hz.
Set the switch to
LPF
position to activate the filter.
Use this position when conncted to a subwoofer.
Set the switch to
FULL
position if you want to run
the amplifier in full range mode.
+ CH2 -
+ CH1
-
50 Hz 500 Hz
FILTER HPF
HPF FULL LPF
+ CH2 -
+ CH1
-
- +
- +
- +
50 Hz 500 Hz
HPF FULL LPF
LPF FILTER
BRIDGEABLE
BRIDGEABLE
