Legacy Audio Goliath XD - Manual (Page 21)

Fine Tuning
While seated at your listening position, click the Polarity button on your subwoofer output.
Using pink noise or a 50-60 Hz test tone, listen for the strongest output. Next, play music
program material and optimize the level and polarity settings, adjusting for the smoothest
output.
21
Adjusting Goliath XD
Filter: Clicking this button allows you to access the EQ capabilities of the subwoofer. The
crossover point and slope can also be adjusted on the right via the X-Hi/LPF section. Follow
the instructions on the previous pages for making adjustments.
Polarity: This control is essential in the proper setup of your subwoofer. If not set up
properly, your main speakers and subwoofer can actually work against each other. If
operating out-of- phase the subwoofer and mains will cancel, creating nulls at some
frequencies (primarily upper bass).What is desirable is to have the subwoofer and the mains
operating in phase, relative to the primary listening position. Here is an effective method of
accomplishing this:
Gain: This will allow you to adjust the volume level played by the subwoofer. It only controls
the
subwoofer level, not the level of any of the other loudspeakers in the system. Be sure to
adjust the Gain in the row corresponding to your subwoofer.