MartinLogan E2 - Manual (Page 30)

You will need to set the dip switches for both right
and left channel. Note: Only one dip switch per dip
switch cluster should be on at a time.
5 If available, use test equipment to optimize the sub-
woofer response.
6 The 50Hz control works the same as the 25Hz control.
7 The phase settings allow the phase of the woofer sec-
tion to be modified in the crossover area. This allows
for a phase match between the ESL/transition-tower and
the subwoofer. The phase dip switch should be set to
270° to start. We have found this setting to work well
in most situations. To adjust the phase see figure four.
8 Replace the lid.
9 Plug the unit in.
10 Turn the amplifier on.
Note: This unit will generate electrical transients on its out-
puts when the power is turned off or on. This can cause
loud noises if the amplifiers are turned on.
Turn on both the woofer and ESL/transition-tower. Try
turning the woofer level up and down on the EXOS. This
will allow you to see how the crossover is meeting. If you
turn the woofer up and a suck-out appears at the
crossover frequency the phase switch on the EXOS needs
to be adjusted.
Adjusting the phase switch is best accomplished by trying
different settings with the amplitude of the woofer output
matching that of the ESL. Find the setting that creates the
biggest suck-out at the crossover point. Now flip the
switches to 180° from that position. Almost always the
270° default position is the best.
Figure 67. The four setting positions for the phase dip switches.
Making It All Work Together (Part 2)
Figure 66. The five setting options for the 25Hz and 50Hz dip switches
30 Making It Work Together