Installation guide

116
slope of 300 dB per octave and a frequency of 2500 Hz will create a delay of 3.85 milliseconds.
Linkwitz-Riley and Butterworth filters are a bit more complicated. They do create delay - however
it is not universal across the frequency spectrum. For example, a 200Hz/48dB Linkwitz-Riley
crossover has a delay around 4 milliseconds around 20Hz, around 6 milliseconds around 200Hz,
with the delay dropping down to zero as the stop band is approached.
S&2-*M1&'.2-.)*
Time alignment can be used to align the audio signal between speakers that are differing
distances from the listener. For example, say that your main speakers are 10 feet from the
listening position, but the sub-woofer is 14 feet from the listening position. To align these three
speakers, the main speakers have to be delayed by a time period equal to the time that sound
takes to travel 4 feet. For the left main speaker, double click on the speaker box in the
configuration window, then select the Time Alignment tab of the Left: Filter Properties dialog. Set
the Units to Feet and enter 4 in the Delay / Offset box. Repeat this for the right speaker.
M?J7.,-?*U#)&"./*
The advanced options are
• Polarity of each output channel can be changed from 0 to 180 degrees.
• Each output channel can be set to bypass or off. Refer to the system diagram at the top
of this page for details of which filters are bypassed in this bypass mode. We
recommend that these settings are not adjusted.
Room Measurement Parameters A number of parameters, set in the Room Measurement Wizard,
identify the room