Klark Teknik DN100 Product Information Document
Product Information Document
DI Boxes
DN100
Active DI Box with Extended
Dynamic Range
High-headroom design with +48V
phantom power for extended
dynamic range
Fully transformer-isolated design
ensures electrical separation
between PA and stage equipment
Balanced line input on Neutrik* XLR
and high impedance input and link
output on ¼ " TRS connectors
30 dB input pad and earth
liftswitches
Features Kensington* lock for
addedsecurity
Aluminium extrusion casing with
protective silicone rubber sleeve
Compact and rugged design
3-Year Warranty Program*
Designed and engineered in England
The DN100 has become an
established favourite amongst both
engineers and musicians alike. Withits
high headroom, dynamic response
and sonic clarity, DN100 faithfully
reproduces the character of electric
and acoustic instruments and allows
far more of the detail of musical
performances to be captured.
DN100 is intended for professional
applications where +48 V phantom
power is a standard feature on all mixing consoles, and its innovative
design results in a signi cantly higher clipping point than many other
active DI Boxes, providing +10dBu output into a 2 kΩ load. Thisincreased
headroom means that much higher level input signals can be
accommodated without the need for an attenuating pad. Combined with
a very low noise input circuit topology, DN100 o ers a very wide dynamic
range, and only requires a single -30 dB pad for use when connecting
directly to instrument ampli eroutputs.
*All trademar ks are the proper ty of their resp ective owner s. Their use
neither co nstitutes a claim of t he trademark nor a liation of the
trademar k owners with MUSIC G roup. Product na mes are mentione d
solely as a re ference for comp atibility, e ects and/or components.
Warranty d etails can be fou nd at music-group.c om.
DN100 is built to handle the rigours of life on the road, a thick aluminium
extrusion protects the electronics, and in turn is covered by a tough silicone
rubber sleeve.
Product Information Document
DI Boxes
DN100
Active DI Box with Extended
Dynamic Range
Balanced transformer-isolated output
Exhaustive listening tests using a wide variety of active and passive bass guitars, electro-acoustic
guitars and electronic musical instruments were carried out to select the components for DN100
to achieve the best musical sound. Not only was the choice of the audio transformer particularly
important in achieving this goal, but the impedances of the surrounding components were also
highly critical in getting the best possible performance out of the audio transformer. The line-driving
characteristics of the transformer output were carefully optimised to provide the best frequency and
phase responses for short and long cables and widely di ering line and termination impedances.
Care was taken in the design of the DN100 to avoid audio transformer core saturation and a xed high
pass lter has been included in the signal path to roll o frequencies below those that are musically
important. The lowest note on a 5- or 6-string bass guitar is B0 with a frequency of 30.87Hz, and the
lowest note on an 88-key piano keyboard is A0 with a frequency of 27.50 Hz. DN100 still maintains a
frequency response of ±0.5 dB at these lowest musical notes.
As well as the transformer in the signal path, DN100 also has a transformer to isolate the power
rails to the input circuit from the phantom power supply sourced from the output XLR connector.
When used in conjunction with the Earth Lift switch, this full galvanic isolation of input and output
interfaces ensures that any risk of earth loops is avoided when taking a direct feed from stage
backline equipment.
Dual-Impedance Inputs
A custom instrumentation-grade input circuit was designed for the DN100 using advanced
analogue design techniques to create the very high input impedance required by passive guitar and
bass pickups, whilst keeping the actual component values low to minimise noise. This innovative
approach to circuit design produces a very low noise oor, which combined with the high clipping
point creates an unrivalled dynamic range in a +48 V phantom powered DI Box.
DN100 features one parallel-connected XLR and two ¼ " TRS inputs, one which may also be used a link
output for connection to a guitar or bass ampli er. When connecting to the XLR input only, theinput
impedance is 20 kΩ, ideal for line level equipment and o ering even lower noise performance.
Thisinput impedance is far too low for guitar and bass pickups and is removed from the circuit when
a jack plug is inserted into a ¼ " TRS input, resulting in a nominal 1 MΩ input impedance, ideal for
passive electric pickups.
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Product Information Document
DI Boxes
DN100
Active DI Box with Extended
Dynamic Range
Illuminated 30 dB Pad and Earth Lift Switches
DN100 features illuminated Pad and Earth Lift switches, which along with the +48V phantom power
indicator LED, provide ‘at a glance’ status display, even at wide distances and viewing angles.
The Earth Lift switch separates the input and output grounds, useful in eliminating earth loops
between equipment on di erent mains electricity supplies.
Kensington Lock
DN100 is tted with a locating slot for a Kensington lock for added security.
Built for the Road
Featuring a tough aluminium extrusion, the DN100 is designed for the rigours of live concert
touring. The protective silicone rubber sleeve also insulates the DN100 chassis to further enhance its
electrical isolation. Premium Neutrik XLR connectors are used to ensure reliable audio connections,
night after night.
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