KLARK TEKNIK DN500 PLUS-2 CH. COMPRESSOR-LIMITER-EXPANDER

The revised DN500 Plus series utilises a new ?THAT?s? chip which features lower distortion,
improved dynamic range and faster slew rate. We?ve updated the cosmetics too, bringing
them into the new KT ?family look?.
The DN500 Plus is our dual compressor / limiter / expander which is characterised by its
extremely quiet operation, typically >2dB quieter than any comparable product. This alone
has made it a broadcast-industry standard for many years. The two channels are linkable for
true stereo operation, and both the compressor and expander sections are fitted with their own
sidechain inputs.
The DN504 Plus Quad Compressor has enjoyed hugely increased popularity in recent years,
due to the ever expanding use of in-ear monitor systems. This is because the unit can be configured
into two stereo pairs, has all the superlative audio performance of the DN500 Plus, and fits two
sets of stereo compression into just one rack space. This configuration also makes it extremely
cost effective.
DN514 Plus has become one of the industry standard multi-gate devices for both recording and
live applications. Providing the same superb audio performance as its other 500 Plus - series,
DN514 Plus packs four channels of frequency conscious gating into just 1RU. This provides a
significant operational advantage, being able to tailor the operation of each gate to a specific frequency
range.
 
DN500 Plus Dual Compressor / Limiter Expander Overview :

Two channels of full function compression, expansion, limiting and peak clipping in one
unit of rack space.
Variable knee control for compression styles from hard to easy.
Auto attack/release mode for inaudible compression and easy set-up.
Manual attack/release mode for creating compression effects.
Advanced VCA design for extremely low noise and distortion.
Flexible expander section features variable ratio for gentle expansion or hard gating.
Separate side chain inputs are provided for compressor and expander sections.
A peak limiter with variable threshold and programme related release provides additional
protection.
Peak clipper eliminates transient overload and tracks limiter threshold for total protection.
Additional features include stereo link function, gain reduction meters for both compressor/
expander sections and output level meter.
The DN500 Plus is sturdily constructed throughout and complies with standard 19?
1U rack mounting requirements.

DN500 Plus Architect's & Engineer's Specification

The compressor/limiter shall provide two complete channels of compression, expansion,
peak limiting and peak clipping.
The compressor section shall provide for adjustment of Threshold, Ratio, Knee, Attack
and Release and have push button selection of auto or manual modes.
The expander section shall provide for adjustment of Threshold, Ratio and Release and have
push button selection of Auto or Fixed attack times.
The limiter section shall provide for adjustment of Threshold and have push button selection
of a Peak Clipper.
An output gain control and level meter shall be provided.
Gain reduction meters shall be provided for both compressor and expander sections.
The compressor/limiter shall meet or exceed the following specifications:
Distortion (THD+N) 115dBu
Compressor Attack time 50?s-20ms
Compressor Release time 60ms-2 secs
Maximum output level into 600 +21dBu
Push button switches shall be provided to select compressor, expander and channel bypass
and to link both channels for stereo operation. Side chain inputs shall be provided for both
compressor and expander sections.
Channel inputs and outputs shall be via XLR style connectors, external side chain inputs shall
be via 1/4? jack. A tamperproof front panel cover shall be available to fit the unit.
The compressor/limiter shall be 19? standard rack mountable and 1U high. The unit shall be capable
of operating from a 115/230V 50/60Hz AC power source.
The compressor/limiter shall be the Klark Teknik Model DN500 Plus and no alternative specification
option is available.

DN500 Plus Technical Data
Input Two
Type Electronically balanced (pin 3 hot)
Impedance (Ω)
Balanced 20k
Unbalanced 10k
Side Chain Inputs Two (Compressor) + Two (Expander)
Type Electronically balanced (tip hot)
Impedance (Ω)
Balanced 20k
Balanced 10k
Audio Outputs Two
Type Unbalanced (pin 3 hot)
Minimum load impedance 600 Ω
Source impedance

Description

The alphaton Feedback-Controller FC-100 is a revolutionary product for every microphone
application including wireless types. It can provide effective feedback control to any sound
reinforcement situation. It can also eliminated string feedback in guitars and bass instruments
which are equipped with piezo or condenser pickups.
The FC-100 provides 6 to 10 dB of feedback protection by analysing the incoming signal,
detecting the presence of feedback and then notching out the feedback frequency.
The FC-100 relieves the sound engineer automatically. It works dynamically and eliminates a
feedback signal before it can grow into a peak. Internally a discriminator circuit detects the
presence of regenerative feedback and triggers the automatic equaliser to insert a notch where
the feedback peak is coming up. This normally prevents other peaks from developing but if they
do, the process is repeated at high speed, thus keeping feedback under control.

Technical Data
In- and Outputs transformer balanced
max. Inputlevel + 3 dB
Gain (RS=200 Ohm, RL=2kOhm) 0 dB
Frequency Response 20 Hz ... 20 kHz, +/- 1,5 dB
Feeback Cancellation  6 ... 10 dB
Power Requirement  30 ... 48 V Phantom
Current drain ca. 8 mA
External Power Supply 9 ... 20 V DC, 3,5 mm jack, tip +
Housing Aluminium Diecast
Weight  285 grams
Dimensions  112 x 60 x 32 mm

The DPR-504 is a 4-channel noise gate.

Each channel features:
A parametric key filter with key filter listening.
Simultaneous key level and threshold metering with average and
peak metering.
A gate status LED.
A RELEASE/HOLD control (hold tracks proportionally with release
times).
Attack switchable auto/fast (auto tracks signal dynamics for optimum
setting).
Link (links two channels together).
Key source allows external triggers.

The Range switch selects between 7OdB and 2OdB gating depth to
provide alternative release profiles.
The unit features electronically balanced inputs and outputs. 

The S com 4 is a compact and versatile single-rack space device that provides
four channels of high quality dynamics processing with an Expander/Gate and
Compressor/Limiter on each channel.
The four channels operate independently or in stereo pairs. Its multi-segment LED
metering displays input/output level as well as gain reduction. The Expander/Gate
section features a continuously variable Threshold control as well as a switch for
fast or slow release times.
The Compressor/Limiter section includes variable Threshold, Ratio and Output levels.
S com 4's Enhancer switch restores high frequencies that are sometimes diminished
by heavy compression. This wide-ranging combination of features makes the S com
4 an efficient and versatile audio tool for a wide variety of applications. Its clean and
quiet audio characteristics make it ideal where high sonic integrity is imperative. 
 
FEATURES:

4 Channel Compressor/Limiter, Expander/Gate with Enhancer
Linkable in two Stereo pairs
Expander/Gate with variable Trigger control and switchable Fast/Slow Release
5 Segment LED meters for Input/Output levels and Gain Reduction on each channel
Advanced circuit design utilizing Low Noise Operational
Amplifiers and High Quality VCA's
Servo Balanced Inputs and Outputs on XLR and 1/4" connectors
SKD (Smart Knee Detector) circuit automatically switches from soft to hard knee
based on the level of Input signal applied
Individual Threshold and Ratio controls on each channel
Three-year extended warranty 

Product Features:

Ultra-high resolution 24-bit/96 kHz mastering processor featuring 32/40-bit floating-point DSP technology
Audiophile 24-bit/96 kHz A/D- and D/A converters offering 113 dB dynamic range
4 concurrently selectable EQ modules (31-band graphic EQ, 10-band parametric EQ, Feedback Destroyer plus 3 Dynamic EQs per stereo channel)
Ultra-high resolution 61-band real-time FFT analyzer with additional auto EQ function for room and loudspeaker equalization
Unique VPQ (Virtual Paragraphic EQ) option allows parametric control of graphic EQs
State-of-the-art compressor/expander with peak limiter per stereo channel, additional stereo imager and stereo delay for delay line applications
Multi-functional level meters (peak/RMS, VU and SPL meter with dBA/dBC weighting via RTA/Mic input)
64 user memories for complete setups and/or individual module configurations
Separate mic/line input with phantom power for RTA and Auto-EQ applications
Balanced inputs and servo-balanced outputs with gold-plated XLR connectors, stereo aux output, AES/EBU and S/PDIF inputs and outputs (XLR and optical)
Professional Wordclock input and MIDI connections for full remote control, preset dumps and system updates
Open architecture allowing future software updates via MIDI
"Planet Earth" switching power supply for maximum flexibility (100 - 240 V~), noise-free audio, superior transient response plus low power consumption for energy saving
High-quality components and exceptionally rugged construction ensure long life
Conceived and designed by BEHRINGER Germany