Orban OPTIMOD-FM 5500 Operation Manual page 163

OPTIMOD-FM DIGITAL
FM's density gently increases between 0 and 10 dB of compression, 10 dB of com-
pression sounds very natural, even on classical music.
2B REL ("2B Release") control determines how fast the two-band compressor re-
leases (and therefore how quickly loudness increases) when the level of the program
material decreases. This release time only applies when the silence gate does not
gate the Two-Band Compressor.
The control can be adjusted from 0.5 dB/second (slow) to 20 dB/second (fast). Set-
tings toward 20 dB/second result in a more consistently loud output, while settings
toward 0.5 dB/second allow a wider variation of dynamic range. Both the setting of
the 2B R control and the dynamics and level of the program material determine
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the actual release time of the compressor. In general, you should use faster release
times for mass-appeal pop or rock formats oriented toward younger audiences, and
slower release times for more conservative, adult-oriented formats (particularly if
women are an important part of your target audience).
We expect that the Two-Band structure will be rarely used for pop music
formats because the Five-Band structure gives better results in almost all
cases.
The action of the 2B R
But its setting is critical to sound quality — listen carefully as you adjust it. There is a
Two-Band Controls
Full Modify Name
2B DRIVE
2B REL
2B GATE
BASS CPL
BASS CLIP
2B CLIP
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HF LIMIT
6K+HF LIM
FINAL CLIP
COMP DRIVE
PARENT PRESET
LESS-MORE
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control has been optimized for resolution and adjustability.
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Advanced Name
2B Drive
2B Release
2B Gate Threshold
2B Bass Coupling
2B Bass Clip
2B Clipping
Maximum Distortion Control
MB Limit Speech Thresh
2B High Frequency Limiting
2B 6-15kHz HF Limiter
Final Clip
2B HF Clip Thresh
Composite Limit Drive
Less-More Index
2B Master Compression
Threshold
2B Bass Compression Thresh-
old
2B Master Attack
2B Bass Attack
2B Clipping
2B Crossover
Table 3-6: Two-Band Controls
Range
–10 ... 25 dB
0.5 ... 20 dB/s
Off, –44 ... –15 dB
0 ... 100 %
-6.0 ... 0.0 dB
–4 ... +5
0 ... +18 dB
–3.0 ... +6.0 dB
–4.0 ... +2.0
Off, –23.8 ... 0.0 dB
-3.0 ... 5.0 dB
–16.0 ... – 0.2, Off
Off, 0.0 ... 3.0 dB
[read-only]
[read-only]; 1.0 ... 10.0
–15 ... 0, Off
-10.0 ... 5.0 dB, Off
4 ... 50, Off
4 ... 50, Off
–4 ... +5
LinearNoDelay, Linear
3-39
OPERATION