Orban OPTIMOD 5750 Operating Manual page 60

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Orban 5750 Technical Manual Operation
JAZZ: JAZZ is an 8500 preset specifically tailored toward stations that play mostly instrumental music, particularly
classic jazz from the LP era (Coltrane, Mingus, Monk, etc.). It is a quiet preset with a very clean, mellow high end to
prevent stridency on saxes and other horns. It preserves much of the qualities of the original recordings, doing light
re-equalization. The preset produces very low listening fatigue, so it is a good choice for stations that want listeners
to stay all day.
There is also an 8500-style SMOOTH JAZZ preset available.
LOUD: There are several LOUD presets, all of which use "8500-style" technology and typically have 18 ms of latency.
We have not made MX versions of the LOUD presets; we retained these presets in the 5750 mainly for historical
reasons. Most were first introduced with THE OPTIMOD-5750 8400 and some 5750 users may have custom presets
based on them.
In order to get the punchiest and loudest sound, beyond LESS-MORE=7.0 we progressively reduce the protection
provided by the distortion-controlling mechanism. So LESS-MORE settings beyond 7.0 are progressively more risky
and can exhibit audible distortion.
LOUD-HOT+BASS is very bright and present, with up-front vocals. Release time is medium. It is tuned for the
maximum amount of bass we could add without creating obvious distortion on some program material. For
maximum punch, it uses the HARD bass clipper at higher LESS-MORE settings.
This amount of bass may be excessive with certain consumer radios (particularly "boom-boxes") that already have
substantial bass boost. Use it with care.
LOUD-HOT+BASS LL is the low-latency version of LOUD-HOT+BASS.
LOUD+SLAM is similar to LOUD-HOT+BASS, but uses HARD bass clipping mode with a SHAPE of 7.6, a BASS SLOPE of
18 dB/octave. It has modified tuning in the band-1 compressor (to control bass clipping distortion that could
otherwise be introduced by Hard bass clipping). This preset provides slamming bass punch, which it trades off against
bass cleanliness on certain program material. Because of the 18 dB/octave BASS SLOPE, its advantages will be
appreciated most through radios with good low bass response.
LOUD-COMPRESSED retains the full 8500-style distortion-controlling mechanism for all LESS-MORE settings.
Because this mechanism reduces clipper drive to prevent waveforms from being clipped excessively, it can pump
audibly when being used to the extreme that it is in this preset. This is a sound texture that some people have
requested.
LOUD-PUNCHY is the quietest of the "loud" preset family. It is designed for a bright, sizzling top end and very punchy
lows. It is a good choice for stations that feel that the LOUD-HOT presets are too aggressive, but that think that the
ROCK presets are insufficiently loud for their market position.
NEWS-TALK: This preset is quite different from the others. It is based on the fast multiband release time setting, so
it can quickly perform automatic equalization of substandard program material, including telephone. It is very useful
for creating a uniform, intelligible sound from widely varying source material, particularly source material that is
"hot from the field" with uncontrolled quality.
It extensively exploits distortion control to achieve a very clean, highly compressed, but unclipped sound quality.