Owner's Manual

Connections and Control Settings 23
MartinLogan's engineering and design team developed
the Dynamo 1500X subwoofer for easy setup and system
integration. Before beginning to connect your subwoofer,
please review the controls discussed in the last section. An
understanding of these will help speed you along as you
connect and integrate your subwoofer with your system.
All signal connections are done on the rear connections
panel of the subwoofer. Make certain that all of your con-
nections are tight.
WARNING! Unplug your subwoofer before
making or breaking any signal connections!
2-Channel Mode
This setup is recommended if your subwoofer will be used in
a 2-channel system with main speakers playing full range.
If you will be using your system for both 2-channel and
multi-channel listening we recommend connecting the
subwoofer as recommended in 'Multi-Channel/LFE Mode'
on the next page. Some modern receivers and processors
allow users to route left and right channel low-frequen-
cy information, in addition to discrete LFE information,
through the LFE output.
Signal Connection (see figure 3):
1 Connect the left and right outputs of your preamplifier
to the left and right inputs using quality RCA intercon-
nects. If your preamplifier only has one set of outputs
you may need to obtain Y adapters from your dealer.
Recommended Control Settings (see figure 4):
1
Set the 'Low Pass Filter' knob to approximately 70% of
your loudspeakers lowest frequency response.
2 While playing music with bass content, turn the level
control up until the music has deep extended bass,
being careful to avoid levels that become overwhelming.
3 Try the phase control in different settings until the
best blending is obtained. If you are augmenting
MartinLogan loudspeakers, we suggest you start with
the phase set at 90°.
CONNECTIONS AND CONTROL SETTINGS
Before Connecting the Dynamo
Figure 3. Signal connection for 2-channel mode.
Figure 4. Control settings for 2-channel mode.
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