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7.5.5.3.9 Flatten
Press this button to return the equalization to flat (all bands at 0dB).
7.5.5.3.10 Curve File
Press this button to load a curve file from the “My Documents/USL/JSD-100MA/EQ Curves” directory. The
installer placed several curve files for different sized auditoriums in this directory. Current practice is to use
one of the X-Curve files, based on auditorium size. N-Curves are also available for use with loudspeakers with
poor high frequency response. If a custom equalization curve is required, use one of the existing files as a
template to create new curve limit file using a text editor. See Appendix E for the Curve File Format.
7.5.5.4
Channel Output Tabs
The channel outputs are grouped into three tabs with the outputs indicated in the tab’s labels. The first tab in
the group is the primary stage channels. The next tab contains the output controls for side surrounds including
the addition of the left and right stage high channels. The third tab in the group is for the remaining surround
channels including ceiling points.
7.5.5.4.1 Channel Label
To identify the output a channel number along with a text channel name is provided. The channel name text
can be edited to reflect labels and or acronyms as required for installation.
7.5.5.4.2 Channel Output Trim
For each channel the output trim control has an adjustment range of +3dB to -22dB. The output trim control is
also available in the Equalizer tab view as required when adjusting the equalization.
7.5.5.4.3 Channel Delay
Included in the output channel groups, a delay control is available. The LFE has its delay control located in the
XO, ETC tab. The surround delay is set usually based on the length and width of the auditorium. Formulas to
determine the surround delay with auditorium Length and Width in meters and feet are provided.
With Length and Width of the auditorium in meters, the surround delay, in ms, should be (L/3)-(W/6)+20.
With Length and Width of the auditorium in feet, the surround delay, in ms, should be set to L-(W/2)+20.
7.5.5.4.4 Channel Invert
When active the final output phase is complemented and typically used to address polarity reversals in the
speaker wiring. As a note when the channel source uses a parametric, an additional option for inversion is
available and useful in bi-amp and tri-amp configurations.
7.5.5.4.5 Channel Generator
For each channel an internal signal generator is available to verify speaker frequency response and for
equalization. Located along the bottom are generator playback selections such as pink noise.