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Summary of Contents for Klark Teknik DN500 Plus
- Page 1 DN500 OPERATORS MANUAL Klark Teknik Group, Klark Teknik Building, Walter Nash Road, Kidderminster. Worcestershire. DY11 7HJ. England. Tel:+44 1562 741515 Fax:+44 1562 745371 Email: sales@ktgplc.com Website: www.klarkteknik.com...
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Page 3: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE AVIS: RISQUÉ DE CHOC ELETRIQUE. NE PAS OUVRIR These symbols are internationally accepted symbols that warn of potential hazards with electrical products. -
Page 5: Declaration Of Conformity
S I G N A L P R O C E S S I N G B Y D E F I N I T I O N DESIGNED FOR A PURE PERFORMANCE DECLARATION OF CONFORMITY Klark Teknik Group (UK) PLC Klark Teknik Building, Walter Nash Road, Kidderminster, Worcestershire, DY11 7HJ Declare that a sample of the following product:- Product Type Number Product Description... -
Page 7: Table Of Contents
Contents Klark Teknik DN500 After you have unpacked Introduction Instrument Familiarisation Front panel controls Rear panel controls Audio Connections Using the DN500 Compression Setting the Controls Expansion Setting the Controls Limiting Compression, Expansion and Limiting together Application notes Linking to the Console... -
Page 9: Klark Teknik Dn500
The Klark Teknik DN500 Thank you for selecting the Klark Teknik DN500 Plus dual compressor / limiter / expander. The unit continues the Klark Teknik tradition of providing superb audio performance, technical accuracy and rugged reliability. Precautions Do not install this unit in a location subjected to excessive heat, dust or mechanical vibration. -
Page 11: After You Have Unpacked
If, however, the unit shows any signs of damage, please notify the transportation company without delay. Only you, the consignee, may institute a claim against the carrier for damage during transportation. If necessary, contact your supplier or as a last resort, your Klark Teknik importing agent, who will fully co- operate under such circumstances. -
Page 13: Introduction
Not only can they solve many problems that can arise in day to day work, creative possibilities exist in abundance. The Klark Teknik DN500 Plus Dual Compressor/Limiter/Expander integrates all of these processes into a single, compact, rack mounting unit with two channel operation. Complete dynamic control over gain is the result, and also control over problems due to noise in the signal chain and the distortion that may be caused by excessive peak levels. -
Page 15: Front Panel Controls
Bypass Stereo links the two channels of the DN500 Plus together, so that they are both operated from the controls of Channel A, apart from the Limiter sections which always work individually. In stereo mode, the unit still monitors the levels of both channels to detect when the signal is above the threshold level (on Channel B, the Stereo switch is replaced by a 'Stereo Slave' light indicator). - Page 16 Expander Threshold determines the level below which gain reduction will take place, variable from 20dBu down to -40dBu. Gain reduction BELOW a threshold level constitutes dynamic range EXPANSION. The Gain Reduction light bar graph meter indicates in decibels by how much the signal is expanded at any instant.
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Page 17: Instrument Familiarisation
Instrument Familiarisation: Rear Panel Controls 115/220-240V NEUTRIK NEUTRIK NEUTRIK NEUTRIK is supplied via an IEC standard 3-pin connector. A compatible power cord is supplied with the Mains unit. is located in a fuse holder fitted to the rear panel. Always replace with the correct type mains fuse and rating as indicated on the unit. -
Page 19: Audio Connections
The standard output is unbalanced, but balancing transformers are available and may be retrospectively fitted. Please contact your Klark Teknik representative for more information. The output circuitry is capable of driving a 600 ohm load at a level of +22dBu. - Page 20 Side Chain/EXT Key Inputs The electronically balanced Side Chain inputs are on stereo ¼ inch typeAjack sockets, configured: TIP = HOT, RING = COLD, SLEEVE = EARTH. Inserting a mono jack plug will automatically unbalance the input. 1/4” Stereo Jack COLD The sockets are internally normalled so that signal continuity is maintained when there is no jack plug inserted.
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Page 21: Using The Dn500
A mix of instruments can be compressed to give a 'tighter' dynamic effect. Or a previously over-compressed recording can have life put back into it by the subtle use of expansion. The DN500 Plus Dual Compressor/Limiter/Expander offers in a compact unit virtually complete control over dynamic range, for corrective and for artistic purposes. -
Page 22: Compression
Compression One of the principal uses of compression is the control of level in vocals. Many singers train for years to achieve the degree of breath control necessary for an even tone and expressive performance. Other vocalists rely on an instinctive voice production technique, which may need help in the studio to maintain a consistent level, and result in a vocal track which 'sits' correctly in the mix. -
Page 23: Setting The Controls
'compressor' sound, used as an effect in its own right. Higher ratios are used for the control of extremely peaky signals. The point where the slope of the Compressor curve changes is knows as the Knee The DN500 Plus has an adjustable knee, variable between 'Hard' and 'Soft': Soft Knee Hard Knee... - Page 24 With a soft knee, signals which only just exceed the threshold level are compressed at a low ratio, the ratio increasing the higher the signal level. sets the time the Compressor takes to respond once the threshold has been exceeded. Attack may be Attack set so that the initial transient of the instrument passes through unaltered, or set to a faster value so that the very start of the sound is compressed.
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Page 25: Expansion
The unprocessed signal has a fairly narrow dynamic range between the highest and lowest levels. Expansion makes the lower levels lower still, increasing the dynamic range. Used as an expander, the DN500 Plus may be connected in the signal chain in exactly the same manner as when used as a compressor. -
Page 26: Setting The Controls
Expansion: Setting the controls sets the level below which expansion takes place. Signals above the threshold will remain Threshold unaltered. Turning the control anticlockwise raises the threshold level and allows more of the signal to be expanded. Alow threshold would be used to reduce noise, a higher threshold to increase the dynamic range of a signal. -
Page 27: Limiting
Limiting The Limiter acts as a last check on signal level. If the level goes over the threshold, fast acting, high ratio compression is applied to bring it back within bounds. If absolute control over peak levels is required, a Peak Clipper may be switched in, acting in effect as a compressor with a ratio of infinity:1 and an instantaneous attack time : Threshold level Unprocessed signal... -
Page 28: Compression, Expansion And Limiting Together
Almost always, when compression is used, the Expander section of the DN500 Plus will be used also, to clean up the signal. The Limiter/Clipper will control any unwanted peaks. -
Page 29: Linking To The Console
The Klark Teknik DN500 Plus Dual Compressor/Limiter/Expander is optimised for use at line level, therefore to process the signal from a microphone, the input to the DN500 Plus has to be taken from the console preferably from the channel insert point send. The output from the DN500 Plus comes back to the channel insert return. -
Page 30: Using The Side Chain
Applications: Side chain inputs Each channel of the DN500 Plus has two inputs, one for the Compressor and one for the Side Chain Expander. In normal use, the amount of compression or expansion is related to the dynamics of the input signal. The Side Chain allows the signal passing through the unit to be controlled by the dynamics of another separate signal. -
Page 31: De-Essing
This technique can also be used to compensate for a 'boomy' bass, or other situations where a band of frequencies is occasionally obtrusive. The DN500 Plus Dual Compressor/Limiter/Expander offers a unique combination of dynamic gain control processors. Engineers will find it a powerful tool in recording, broadcast and post-production studios, and in... -
Page 33: Technical Specification
DN500 Technical Specifications PUSH PUSH NEUTRIK NEUTRIK NEUTRIK NEUTRIK Audio Inputs Type Electronically Balanced Impedance (ohms) Balanced Unbalanced Side Chain Inputs Two Compressor + Two Expander Type Electronically Balanced Impedance (ohms) Balanced Unbalanced Audio Outputs Type Unbalanced Minimum Load Impedance 600 ohms Source Impedance <60 ohms... - Page 34 *Input transformer balancing is non-retrofittable and has to be specified with order. Parts Number Options Ordering Information Perspex security cover SCP......Model No. Aluminium security cover SCA ......Model No. Output balancing transformer BU37 Input balancing transformer BN37 Klark Teknik Group DOC02-DN500Plus 6/12/02...
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