OPTIMOD-AM DIGITAL OPERATION
3-29
The shelving equalizer provides control over gain, hinge frequency, and slope (in
dB/octave).
BASS FREQ
sets the frequency where shelving starts to take effect.
This would by the +3 dB frequency for infinite BASS GAIN. For lower bass
gains, the gain is progressively less than +3 dB at this frequency.
BASS GAIN sets the amount of bass boost (dB) at the top of the shelf.
BASS SLOPE
sets the slope (dB/octave) of the transition between the top
and bottom of the shelf.
Depending on the preset and adjustment of the band 5 compressor/limiter in the
digital processing channel, the 9400’s processing may increase the brightness of pro-
gram material in the digital processing channel. Hence, bass boost is sometimes de-
sirable to keep the sound well balanced spectrally. Adjustment of bass equalization
must be determined by individual taste and by the requirements of your format. Be
sure to listen on a wide variety of receivers — it is possible to create severe distor-
Equalizer Controls
Group Basic / Full
Modify Name
Advanced Name Range
BASS FREQ Bass Frequency 80, 85, 90, 95, 100, 105, 110, 115,
120, 125, 130, 135, 140, 145, 150,
160, 170, 180, 190, 200, 210, 220,
230, 240, 250, 270, 290, 310, 330,
350, 380, 410, 440, 470, 500Hz
BASS GAIN Bass Gain 0 … 12 dB
Bass Shelf
(HD AM only)
BASS SLOPE Bass Slope 6,12,18 dB / Oct
LF FREQ Low Frequency 20 ... 500 Hz
LF GAIN Low Gain –10.0 … +10.0 dB
Low
LF WIDT Low Width 0.8 ... 4 octaves
MID FREQ Mid Frequency 250 ... 6000 Hz
MID GAIN Mid Gain –10.0 … +10.0 dB
Mid
MID WIDTH Mid Width 0.8 ... 4 octaves
HIGH FREQ High Frequency 1.0 … 15.0 kHz
HIGH GAIN High Gain –10.0 … +10.0 dB
High
HIGH WIDTH High Width 0.8 ... 4 octaves
HF Enhancer HF ENH High Frequency
Enhancer
0 … 15
HF Gain
(analog only)
HF Gain High Frequency
Shelf Gain
0 … 22 dB
HF Curve (ana-
log only)
HF Curve High Frequency
Shelf Curve
0 … 10, NRSC
Brilliance (HD
only)
BRILLIANCE Brilliance 0.0 … +6.0 dB
DJ Bass DJ BASS DJ Bass Boost Off, 0 … +10 dB
System Filters LOW PASS Lowpass 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0,
8.5 ,9.0. 9.5(NRSC) kHz
LPF Shape –0.1, –3.0, –6.0 dB
HI PASS Highpass 50 ,60, 70, 80, 90, 100 Hz
Table 3-3: Equalization Controls
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