MartinLogan Dynamo 1000W User Manual page 8

CONNECTIONS AND CONTROL 5EniNGS
Before Connecting the Dynamo
Martinlogan's engineering and design team developed
the Dynamo 1 OOOW and Dynamo 700W subwoofers
for easy setup and system integratio n. Before beginn ing
to connect your subwoofer, please review the con trols
discussed in the last sectio n. An understanding of these
will help speed you along as you connect and integrate
your subwoofer w ith your system. All signal connections
are done on the rear connections panel of the subw oofer-
Make certain that all of your connections are tight.
WARNING!
Turn your subwoofer to
'Off'
before making or breaking any signal con-
nections!
2-Channel Mode
This setup is recommended if yo ur su bw oofer w ill be used
in a 2-c hanne l syste m with ma in speake rs play ing full
range. When a signal is connected via left/right inputs
and the crossover switch is set to 'Variable (L&R In), the
subwoofer's internal low pass filter is active.
If yo u w ill be using your system fo r both 2-c ha nnel and
multi-channe l li stening we recommend conn ecting the
subwoofer as recommended in 'Multi-Channei/LFE M ode'
on the next page. Some modern receivers and processors
allow use rs to route left and right c hannel low-frequ en-
cy info rm ation, in ad dition to discrete LF E info rmation,
through the LFE output.
Signal Connection {see figure 2):
Connect the left and rig ht outputs of yo ur preamplifier
to the left and rig ht inputs using q uality R CA interco n-
nects. If your prea mplifier only ha s one set of outputs
you may need to obta in Y adapters from your dea ler.
Recommended Control SeHings {see figure 3):
Set the crossover switch to 'Variable (L&R In)' .
2 Set the 'Low Pass Filter' knob to approximately 7 0 % of
your loudspeakers lowest frequency response .
3 W hile playing music w ith bass co ntent, turn the level
co ntro l up until th e music has deep extend ed bass,
being careful to avoid levels that become overwhelming.
8 C onnections and Contro l Settings
4 Try the phase control in different settings until the
best b lending is obta ined. If you ore a ugmenting
Martin logan loudspea kers, we suggest you start with
the phase set at 90°.
DYNAMO™
Line Level
Input
(LFE In)
Left In Right In
PREAMPLIFIER/RECEIVER
Figure 2.
Sig na l connectio n for 2-c han nel mode.
Level
Low Pass Filter (Hz)
Crossover
@
Mi n Max
Phase Bypass
,a g :At
(~)
goo
\\o.V'
\\oV ~
Variable
©)
35Hz · 120Hz
(l & R
In)
DYNAMOTM
Figure 3.
Contro l setting s fo r 2-channe l mod e.