Film-Tech SA10 Installation Manual page 31

2-8 / Alignment With CP500
.4
.05 .2
.1
.4
.05 .1 .2
.4
.05 .2
.1
2.0 8.0
1.6 6.3 12.5 kHz
.8 3.15
2.0 8.0
1.6 6.3 12.5
.8 3.15
2.0 8.0
1.6 6.3 12.5
.8 3.15
While observing the RTA connected to the
microphones in the theatre, adjust the bass controls on
the SA10 to produce a low frequency response as flat
as possible.
dB
The left-hand control sets the frequency range, and the
+10
right-hand control sets the level of boost or cut.
+5
0
–5
–10
Adjust the treble controls to produce a flat high
frequency response up to 2 kHz, followed by a 3 dB
per octave rolloff above 2 kHz.
The right-hand control sets the frequency range, and
dB
the left-hand control sets the level of boost or cut.
+10
+5
0
–5
–10
kHz
Fine-tune the equalization by adjusting the seven mid-
dB
band controls.
+10
+5
Note: All controls interact with each other. Do not start at the
low-frequency end and work your way to the high-frequency end.
Start at the center frequency and attempt to achieve results with
0
cut rather than boost. As each control is adjusted, the level of the
adjacent band is affected. You may find that a cut at one
–5
frequency will require a slight boost at adjacent frequencies.
–10
kHz
The desired setting is a flat response up to 2 kHz,
falling at 3 dB per octave to 8 kHz (1 dB per third-
octave band).