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2-Channel/Multi-Channel Mode
This setup is recommended if your subwoofer will
be used in both 2-channel mode and as a LFE chan-
nel in a multi-channel system. By following this setup,
you will allow your processor to handle most of the
bass management while running in multi-channel
mode, and relinquish control of the low pass filter to
the subwoofer when running in a 2-channel mode.
Signal Connection (see figure 8):
1 Connect the left and right out of your preamplifier to
the subwoofer's Left In / Right In. Use quality RCA
interconnects. If your preamplifier only has one set of
outputs you need to obtain Y adapters from your dealer.
2 Connect the LFE output of the processor to the sub-
woofer's LFE In. Use quality RCA interconnects.
Recommended Control Settings (see figure 9):
1 Set your front speakers for wide, large or full mode in
your processor. Set the center and effects type speakers in
limited or narrow mode (see the warning on page 10).
2 Calculate the number equal to 70% of your main loud-
speaker's lowest frequency rating. Set the Low Pass Filter
switch to the closest setting below the resulting number.
3 While playing familiar music with bass content, turn
the level control up until the music has deep bass that
is not overwhelming.
4 Try the phase control in different settings until the
best blending is obtained. If you are augmenting
MartinLogan loudspeakers, we suggest you start with
Phase set at 90°.
5 Use the bass management section of your processor's
speaker setup to set the subwoofer level at an appro-
priate level. Follow the instructions in your processor's
manual to fine-tune the subwoofer level.
6 If your processor offers the option to setup crossovers for a
subwoofer, we recommend that you start with the fol-
lowing settings—Crossover: 70Hz, High-Pass: 12dB,
and Low-Pass: 24dB. The optimal setting for these
options may vary depending on your room and listen-
ing preferences.
Figure 8 . Signal connection for 2-channel/multi-channel mode.
Figure 9 . Control Settings for 2-channel/multi-channel mode.
Controls and Connections
11
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