BSS Audio DPR-901II Owner's Manual - Manual (Page 13)

13
Controls
(Band two and band three only). Switches the EQ from a bell response to
a flat (wide-band) response. With the bell response, the process sensitiv-
ity is reduced symmetrically either side of the selected centre frequency.
When the Defeat setting is selected by depressing the button, the af-
fected band becomes EQ-less, like a conventional compressor/expander:
it responds to all frequencies equally. This facility allows ordinary com-
pression/expansion to be used alongside and in addition to effects estab-
lished using the three (remaining) bands of frequency sensitive compres-
sion/expansion.
When this control is set centrally (at 12 o’clock), the dynamic effect is
nil. When turned to the left, the band is compressed. When turned to
the right, the band is expanded. However, expansion or compression
is conditional as it only occurs if the signal level is above threshold (or
below threshold dependent on switch 14), as indicated on meter 13. The
degree of compression or expansion is indicated on meter 11. The
compression or expansion ratio progressively increases as the knob is
turned away from the centre and is soft-knee close to the centre, becom-
ing harder (more like a limiter) with more extreme settings. Maximum
compression is +30dB and maximum expansion is +16dB.
9 FILTER/DEFEAT
10 COMP-EXP
Fig. 3.1 Bell and Shelf
Filter Switching
0dB
LEVEL
FREQUENCY
Width
Fc
0dB
LEVEL
FREQUENCY
F
BAND 1
F
BAND 4