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C
onneCting the
Receiver/Preamplifier
Receiver/Preamplifier
Left Out
Left Out
Dynamo
Subwoofer
Low
Pass
Filter
180°
Phase
0°
Status
Auto
On
Figure 3. Signal connection for 2-channel mode.
4
s
ubwoofer and
Right Out
Right Out
+
Speaker
Level
Input
Right In
–
+
Speaker
Level
Input
Left In
–
s
C
etting
ontrols
Before Connecting the d
MartinLogan developed the D
ynamo
system integration. Before beginning to connect your subwoofer,
please review the controls discussed in the last section. An under-
standing of these will help speed you along. All signal connections
are done on the rear connections panel of the subwoofer. Make cer-
tain that all of your connections 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 only system. When a signal is connected to the
subwoofers Left In/Right In, the Low Pass Filter control is active.
Signal Connection:
1 Connect the left out/right out from your preamp/receiver to the
Left In/Right In of the subwoofer. Use RCA interconnects or speak-
er level connections, but choose only one connection method—do
not use multiple methods of connection at the same time. Speaker
level connections are discussed in detail later in this manual.
Recommended Control Settings:
1 Calculate the number equal to 70% of your main loudspeak-
er's lowest frequency rating. Set the Low Pass Filter to a setting
equal to the resulting number. If the resulting number is lower
than 30Hz, set this to 30Hz.
2 Play familiar music with bass content. Increase the Volume
(level) until the music has deep extended bass. Be careful to
avoid levels that become overwhelming.
3 Try the Phase and Polarity (Inverted) in different settings until
the best blending is obtained. Play familiar music with deep,
repetitive bass. Adjust the Phase and Polarity (Inverted) setting
so the bass notes seem their loudest and without blur when
heard from your typical listening position. If you are augmenting
MartinLogan loudspeakers, we suggest you start with Phase set
at 0° when experimenting.
ynamo
subwoofer for easy setup and
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