Nee Atio - Orban OPTIMOD 6300 Operating Manual

3-54
OPERATION
T
HRESHOLD control affects the sound less and less.
2B Master Attack sets the attack time of the 2-band Compressor master compres-
sor (above 200Hz).
2B Bass Attack sets the attack time of the 2-band Compressor bass compressor (be-
low 200Hz).
2B Master Comp Ratio and 2B Bass Comp Ratio set the compression ratio of the
Master compressor and Bass compressor respectively at their thresholds of compres-
sion. Beyond threshold, the ratio increases with increased gain reduction until it be-
comes :1 at the amount of gain reduction (in dB) set by the 2B M
trol. When you adjust these controls, the thresholds of the multiband compressors
automatically change so that the total amount of gain reduction stays approxi-
mately the same. (This automatic adjustment is internal to the 6300's DSP; the dis-
played settings of the MB T
To achieve a classic soft knee characteristic, set the 2B M
1:1 and set the K
control to the gain reduction in dB at which you wish the com-
NEE
pression ratio to level off to :1. The maximum setting produces the softest knee.
to 0 dB produces a classic hard knee curve with :1 compression ra-
Setting the K
NEE
tio regardless of the setting of the 2B M
See Figure 3-2 on page 3-53 for the curves of output level vs. input level for various
settings of the K and R
NEE
2B Knee (see 2B M
ASTER
2B Breakpoint The release rate (measured in dB/second) in the 6300's compressors
is constant when the gain reduction is higher than the control's setting, and expo-
nential when the gain reduction is lower than the control's setting.
When the release is exponential, the release rate is proportional to the amount of
gain reduction. Do not confuse this with the reverse exponential characteristic trig-
gered by setting the 2B R
mences slowly and then speeds up as it progresses.
The 2B B control is only active when the 2B R
REAKPOINT
L
INEAR .
Compression-induced audio density remains constant when the gain reduction is
above the 2B B
REAKPOINT
B
setting, density decreases proportionally to the amount of gain reduc-
REAKPOINT
tion.
For example, if the 2B B
be constant when the gain reduction is above 10 dB. Between 10 dB and 0 dB gain
reduction, the release rate will slow down more and more.
The calibration of the B
R
ATIO = infinity:1 — i.e., when the compression ratio is essentially infinite. When the
HRESH controls do not show it.)
ASTER
controls.
ATIO
C R
OMP ATIO above).
S control to E
EL HAPE
setting. When the gain reduction is below the 2B
is set to 10
REAKPOINT
controls is only accurate when K
REAKPOINT
ORBAN MODEL 6300
C
ASTER OMP
C R
OMP ATIO control.
. In this case, release com-
XPONENTIAL
S
ELEASE HAPE
DB , the release rate (in dB/second) will
NEE
K
ASTER NEE con-
R
ATIO control to
control is set to
= 0 dB and/or