Omnia 6EX Installation And Operation Manual page 75

Clippers (Clip) (FM Mode Only)
Clipper Submenu
Bass Clip Threshold: Limiter bands 1 & 2 have their own clipper and time-aligned low-pass filter in order to reduce
IM distortion in the main clipper. The Bass Clip Threshold control sets the threshold of the bass clipper referred to
the clip level of the main clipper. A higher threshold (counter-clockwise) will reduce the amount of bass clipped by
the bass clipper but cause a corresponding increase in the amount of bass clipped by the main clipper. Conversely, a
lower threshold (clockwise) will reduce the amount of bass sent to the main clipper but increase the amount of
activity in the bass clipper. Too much clipping by the bass clipper can soften bass 'punch'. It may also be heard as a
"rattling" sound in the bass. Fine tuning of the bass clipper drive level is also possible by adjusting the band 1&2
controls in the Final Mixer as these feed the input of the bass clipper.
Bass Clip Tune: This new control sets the corner frequency of the specialized low pass filter that serves to control
the introduction of Bass Clipper harmonics. Higher numbered settings add more filtering, reducing IM distortion
caused by the main clipper acting on excess Bass Clipper harmonics. A setting of 0 effectively removes the filter
and a setting of 20 sets the corner frequency to 380 Hz.
Clipper Style: This is another new function designed to alter the texture of the Bass Clipper system. These buttons
select one of two specialized algorithms that control the Bass Clipper: Tight and Girth. The desired sound will
determine which is better suited. Tight: is the established Bass Clipper system that Omnia processors have always
employed. It's a straightforward hard limiter that will create a deep, sub-harmonic effect to the audio. The drawback
is that it can generate IMD products within the main clipper system. Girth: is designed to create a phatter effect to
low frequencies, and it will help create the illusion of more bass on smaller speakers. Also, this algorithm, which is
mathematically derived, will contribute lower midrange IMD components to the spectrum. So live voice, vocals and
solo instruments that are present along with strong bass in the program material will sound cleaner yet will still
create an in-your-face effect to the low end. The action of either of these can be further tailored using the Bass Clip
Tune that was previously explained.
Clipper Drive: Here is where the Omnia-6EX's loudness versus quality advantage is most evident! The main clipper
is a very powerful algorithm, is highly over-sampled, and is fully anti-aliased. This clipper control's adjustment
range is +/-6 dB, in 0.1dB steps. It is advisable to make minor changes, primarily as the 'loudness fine tuner'. Be
careful; there is a lot of available power here!
Omnia-6ex Use and Operation Manual – V: 1.10
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