Orban OPTIMOD 6200 Operating Manual page 98

3-18
OPERATION
MID BASS control provides a 12dB/octave shelving boost at 200Hz. Use it in conjunc-
tion with the
LOW BASS
ments. A mid bass boost is mainly useful to stations that program to an audience likely
to be listening on smaller radios. It can force a thin-sounding radio with a small speaker
to seem to have more bass. However, bass boost in this frequency range can make larger
radios sound very muddy and boomy, so adjust the
care, listening to both small radios and radios with good bass response.
Midrange Parametric Equalizer is a specially designed parametric equalizer whose
boost and cut curves closely emulate those of a classic Orban analog parametric equal-
izer with conventional bell-shaped curves (within ±0.15dB worst-case). This provides
warm, smooth, "analog-sounding" equalization.
MF GAIN determines the amount of peak boost or cut (in dB) over a ±10dB
range.
MF FREQ determines the center frequency of the equalization, in Hertz.
Range is 250-4000Hz.
MF WIDTH determines the bandwidth of the equalization, in octaves. The
range is 0.3-2.0 octaves. If you are unfamiliar with using a parametric equal-
izer, 1 octave is a good starting point.
The audible effect of the midrange equalizer is closely associated with the
amount of gain reduction in the midrange bands. With small amounts of gain
reduction, the effect is an actual boost in the amount of power in the pres-
ence region, which can increase the loudness of such material substantially.
As you increase the gain reduction in the midrange bands (by turning the
DRIVE control up), the
effect. The compressor for the midrange bands will tend to reduce the effect
of the MF boost (in an attempt to keep the gain constant) to prevent exces-
sive stridency in program material that already has a great deal of presence
power. Therefore, with large amounts of gain reduction, the density of pres-
ence region energy will be increased more than will the level of energy in
that region. Because the 3.7kHz band compressor is partially coupled to the
gain reduction in the 6.2kHz band in most presets, tuning
4kHz and turning up the
6.2kHz band — you will be increasing the gain reduction in both the 3.7kHz
and 6.2kHz bands. You may wish to compensate for this effect by turning up
the B4>B5
Use the mid frequency equalizer with caution. Excessive presence boost
tends to be audibly strident and fatiguing. Moreover, the sound quality, al-
though loud, can be very irritating. We suggest a maximum of 2-3dB boost,
although 10dB can be achieved.
High Frequency Parametric Equalizer is a parametric equalizer whose boost and cut
curves closely emulate those of an analog parametric equalizer with conventional bell-
shaped curves.
HF GAIN determines the amount of peak boost or cut over a ±10dB range.
boost control to tailor your on-air bass to your exact require-
MF GAIN control will have progressively less audible
MF GAIN
control.
boost control with great
MID BASS
MF FREQ
control will decrease energy in the
ORBAN Model 6200
MB
to 2-