Speck Electronics ASC - Manual (Page 17)

13
The boost/cut control provides a reciprocal volume adjustment of the
selected frequency control. This means that whatever frequency is
"boosted" with the boost/cut adjusted from its center position clockwise,
an identical but opposite result is achieved when that same frequency
selection is "cut" from its center position counterclockwise. Once the
desired frequency has been selected with the low frequency sweep
control, that frequency may be continuously accentuated or attenuated
(boost or cut) from 0 to +15dB or -15dB. 0dB (flat) is obtained when
this control is set to its center detented position.
This switch changes the low frequency band from a peak/dip curve (as
shown in Figure 4a) to shelving curve (as shown in Figure 4b).
This switch selects the frequency
range of the Low/Mid band. In the
“out” position, the low range of
40Hz-800Hz is selected. When
depressed, this switch selects the
mid band of 400Hz-8kHz.
A yellow LED to the right of this
switch illuminates indicating that
the mid band has been selected.
5. Low boost/cut
6. Peak/Shelf Switch
L/M (Low/Mid) BAND
7. Low/Mid select switch
Chapter 3 Operation Section
0
15 + 15
_
230
70
700
500
5K
40
400
800
8K
LOW
MID
L/M
10
7 9
8
Fig. 4a. Shelving Curve
Fig. 4a. Peak/Dip Curve