Introduction - Klark Teknik DN9848 Operator's Manual

Introduction

The DN9848 is a highly configurable, digital electronic crossover/loudspeaker management system
comprising of four balanced analogue input channels and eight balanced analogue output channels. The
user may choose from the following preset routing configurations:
Each output channel may be sourced from the following input channel options :
None
A
B
C
D
A+B
C+D
A+B+C+D
Though the DN9848 utilises a fully digital processor, it maintains the operational paradigm, as well as
the sonic integrity, of a high quality analogue unit. In addition to guaranteeing absolutely precise filter
operation, the use of digital technology provides unrivaled flexibility of routing, the ability to program
delays into both the input and output channels, extensive equalisation on both the input and output
channels, and of course programmability. Each input channel provides eight separately configurable,
fully parametric equalisation stages that may be used for room equalisation, up to 1000ms of delay, gain
control and compression. Full metering with clip indication is available for all input and output
channels.
Each output channel provides configurable high and low-pass filters for setting the crossover
characteristics as well as six further stages of fully parametric equalisation that may be used to
compensate for system or enclosure characteristics. Further delay of up to 300ms is available on each
output, mainly used for system time alignment, in addition to gain control, muting and limiting. Dual
all-pass phase correction sections are also included, the first of which can be any of the filter or
parametric EQ stages and can be adjustable in 5 degree steps.
The crossover filter types available are:
12dB/octave peaking (high-pass filter only)
24dB/octave peaking (high-pass filter only)
Butterworth
Linkwitz-Riley
Bessel
All aspects of the unit may be programmed from the front panel via a RS-232 port or via remote control
using the standard comms port and RS-485 . Parameters may be directly edited via rotary controls and
switches on the front panel with all values being displayed on a 2-line, 24 character backlight LCD
display.
The operating system is held in flash ROM, enabling updates to be installed directly from a computer
and various levels of safety lockout. This lockout ability may be used for installations or hire
applications where unauthorised user intervention could place the connected loudspeaker systems at
risk. Upto 24 character passwords can be used rather than PIN numbers due to the large display.
(channels summed at -3dB with balance control)
(channels summed at -3dB with balance control))
(channels summed at -6dB)
(6, 12, 18, 24, 36 and 48dB/octave)
(12 and 24dB/octave)
(12, 18, 24, 36 and 48dB/octave)
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