BSS Audio FCS 966, Руководство пользователя

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Be aware that making the system ‘flat’ by applying large amounts of boost is
not desirable; when real program is applied to a system setup this way,
overload is almost certain to occur. It is far better to reduce the level of peaks
than try to fill in large holes. Be cautious also of pushing a speaker, particularly
a bass speaker, to reproduce sounds which it is not capable of. This just leads
to extra distortion. The extra heat and cone movement may also permanently
damage the driver.
8.4 Uses for the HP
Filter
It is highly undesirable to
send large amounts of low
frequency energy to speaker
systems that are unable to
cope with it. This leads to
distortion and premature
overload. As the HP filter is
steep, it is able to more
effectively remove this
energy than the main
equaliser low frequency
bands. In addition to cleaning up the sound this may well enable the low
frequency controls of the main equaliser to be used more creatively, as they do
not now need to be employed to deal with sub-bass. Because power absorbing
low frequency content has been removed, it may be possible to turn up the
gain beyond the point that previously resulted in system overload.
One major application for the HP filter is for removing the bass signals from
monitor wedges designed for vocalists. As it may also be required to use one
monitor mix for more than one performer, the HP filter provides a convenient
method of effectively removing inappropriate signals from individual monitor
feeds.
Fig 8.2 using the
graphic with RTA