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Installing in a Cabinet
Occasionally, there is a desire to place subwoofer(s) inside of
cabinetry. Your sub’s unique two-woofer design does not compro-
mise the ability to be successfully installed in such a configuration.
However, it is recommended, as with any quality multi-driver sub,
that there be a minimum of three inches of open space between
the cabinet and the front, left and right sides of the subwoofer.
Ask Your Dealer
Your MartinLogan dealer can suggest many options for optimal
subwoofer placement. They also have many tools at their disposal,
such as experience, familiarity with the associated equipment,
and even sound analysis equipment which may make the task of
determining optimal subwoofer placement easier.
Solid Footing
After using and experimenting with your sub, you may want to
use ETC (energy transfer coupler) spikes. With the use of these
spikes, the subwoofer will become more firmly planted on the floor
and, consequently, bass will tighten and imaging will become
more coherent and detailed. It is best not to implement the spikes,
however, until you are secure in the positioning, as the spikes can
damage the floor if the subwoofer is moved. The feet that attach
to the bottom of the subwoofer use a common 3/8 - 16 thread.
1 On a soft, padded surface, carefully lay your subwoofer on
its front to gain access to the bottom.
2 Remove existing feet or spikes. Thread new spikes into holes
and screw them in all of the way. If the subwoofer does not
sit level loosen one spike until level is achieved.
3 By hand, tighten the jam nut snugly against the cabinet. Do
not over tighten the nut.
4 Right the speaker. Caution: Make sure your hands and any
cabling are clear of the spikes. Do not slide subwoofer as
spikes are sharp and can damage your floor or carpet.
5 Adjust to level by rotating spikes. By hand, tighten the jam
nut snugly against the cabinet when you are satisfied the
subwoofer is level.
Caution: Walking the subwoofer may result in over tightening
and/or a broken spike.
Enjoy Yourself
Your subwoofer will benefit from care in setup. With the above
placement tips in mind you will find, over months of listening,
that small changes can result in measurable differences. As you
live with your subwoofer do not be afraid to experiment with
positioning until you find the optimal relationship between your
room, settings, and subwoofer, that gives to you the best results.
Your efforts will be rewarded.
Placement 33
Figure 19. Placing the subwoofer in a cabinet requires a minimum of
three inches of open space on the front, left and right.
English
Figure 20. An ETC (Energy Transfer Coupler) Spike