MartinLogan Sequel II - Manual (Page 20)

Page 20 Sequel II User's Manual
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A major cable company developed the following
procedure for speaker placement. As a final test of exact
placement, use these measurements for your speakers
placement, and see what can happen to the ultimate
enhancement of your system’s performance.
The procedure consists of two basic measurements:
1) distance from the front wall (wall in front of the
listening position) to the center of the curvilinear
transducer.
To determine distance from the front wall, measure the
height of your ceiling (inches) and multiply the figure by
.618 (i.e. ceiling height in inches X .618 = distance from
the front wall to the center of the curvilinear transducer).
2) distance from the side-walls to the center of the
curvilinear transducer.
To determine distance from the side-walls, measure the
width of your room (inches) and divide the figure by 18,
next multiply the quotient by 5 (i.e. (room width in inches/
18) X 5 = distance from the side-walls to the center of the
curvilinear transducer).
These two formulas will determine optimum placement of
your speakers to minimize standing waves.
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After living and experimenting with your Sequel II's, you
will then want to use the spikes included in your owners
kit. The Sequel II 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 floors if the
speaker is moved.
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The Sequel II is a very refined speaker and, as such,
benefits from care in set-up. With these tips in mind, you
will find, over your months of listening, that small changes
can result in demonstrable differences. As you live with
your speakers, do not be afraid to experiment with their
positioning until you find the optimal relationship
between your room and your speaker system to give you
the best results. Your efforts will be rewarded.
You are now armed with the fundamentals of room
acoustics and the specific fundamentals of the Sequel II
loudspeaker. Happy listening!
Placement