Klark teknik dn800 actcross

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DN800 Configurable Active Crossover

The Klark Teknik DN8OO is a highly specified, active frequency divider designed for
use in sound reinforcement, recording studio and installed sound systems. It may be
configured as a fourQinput, two-way systems or as a two-input, three or four-
way system, the compact, lU format making it particularly suitable for use in sys-
tems where space is at a premium,

Interchangeable cards are used to set the filter frequency and slope characteristics,
while each band has its own adjustable VCA limiter, the time constants being
optimised for the frequency range covered by that band. The plug-in filter cards
offer a choice of 12, 18 or 24 dB/octave filter slopes with a choice of Linkwitz-
Riley, Butterworth or Bessel responses. In many applications, the Linkwitz-
Riley response is the most suitable as it exhibits equal phase shifi in adjacent fre-
quency bands at the filter corner points. Optional equaliser cards may be fitted.

Optional software is available for those users who wish to calculate component
values withaview to populating their own filter boards. This runs on a standard
PC computer and unpopulated filter boards are available.

In two-channel applications, the low bands may be linked to provide a mono
feed to sub-bass or bass systems while in the stereo, three-way mode, the unused
fourth band can be used to provide a direct (unfiltered) feed.

In addition to level and limiter controls, each band is equipped with a phase reverse
switch and a continuously variable phase control (180 degrees maximum) based
around an advanced all-pass filter design. In combination, these controls allow up
to 360 degrees phase shift to be set independently for each band. Full LED status
indication is provided for all relevant parameters in each frequency band.

Provision is made for optional equaliser cards which can provide response tailoring
for each crossover band.

Connections

The signal connections are on conventionally wired XLRs (pin 2 hot). As standard,
these are electronically balanced and operate at a nominal +4dBu signal level, Trans-
former balanced inputs are available as an option while internal System Gain trims
can be used to reset the output level if required.