Speck Electronics ASC - Manual (Page 19)

15
The mid frequency sweep control
is used in conjunction with the
mid boost/cut control and
provides continuous adjustment of
the center frequency from 400Hz
(fully counterclockwise) to
10KHz (fully clockwise).
This control provides 15dB of bell
shaped boost or cut for the mid
band (400Hz to 10kHz) frequency
range, and is used in conjunction
with the high frequency sweep
adjust. 0dB (flat) is obtained
when this control is set to its
center detented position.
For the mid band, a continuously adjustable bandwidth control is
provided. This control sets the width of the frequency that has been
selected on the Mid sweep control. When set fully CCW, the bandwidth
is a wide 2 octaves (Q=.5). When set fully CW, the bandwidth narrows
to .25 octave (Q=3.8). The center position is approximately .6 octaves
(Q=1.6).
The high frequency sweep control is used in conjunction with the high
boost/cut control and provides
continuous adjustment of the
center frequency from 4kHz
(fully counterclockwise) to 25kHz
(fully clockwise).
Bandwidth (Q)
The bandwidth for the selected
frequency of the high band is
automatically adjusted with the
selection of the frequency sweep
control. The 4kHz setting on the
sweep control will result in a
narrow bandwidth of
approximately .5 octave (Q=1.8). As the frequency sweep control is
adjusted to its highest setting (25kHz), the bandwidth widens to
approximately 1.8 octaves (Q=.6).
This control provides 15dB of bell shaped boost or cut for the high
H (High) BAND
14. High frequency sweep
Chapter 3 Operation Section
400
700
2.5
6.2
10K
0
15 + 15
_
M
12
11. Mid frequency sweep
12. Mid boost/cut
13. Mid bandwidth adjust
M (Mid) BAND
11
13
4K
5.5
11
16
25K
0
15 + 15
_
si
H
15
14