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DN504
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
DN504Plus Quad Compressor/Limiter Operators Manual
DOC02-DN504+
Issue 1.1 - September 2004
(c) Klark Teknik Group (UK) PLC.
In line with the company's policy of continual improvement, specifications and function may be
subject to change without notice. This Operators Manual was correct at the time of writing. E&OE.
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Summary of Contents for Klark Teknik DN504 PLUS
- Page 1 DOC02-DN504+ Issue 1.1 - September 2004 (c) Klark Teknik Group (UK) PLC. In line with the company’s policy of continual improvement, specifications and function may be subject to change without notice. This Operators Manual was correct at the time of writing. E&OE.
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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: RISQUE DE CHOC ELECTRIQUE. 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 The Klark Teknik DN504 After you unpack Introduction Instrument Familiarisation Front panel controls Rear panel controls Audio Connections Using the DN504 Compression Setting the Controls Limiting Application notes Linking to the Console Applications using the Side Chain De-essing Ducking... -
Page 9: The Klark Teknik Dn504
The Klark Teknik DN504 Thank you for selecting the Klark Teknik DN504 Plus quad compressor / limiter. 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 Unpack
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
Introduction The Klark Teknik DN504 Plus Quad Compressor/Limiter has been designed to give the studio or PA engineer comprehensive and convenient automatic control over gain and level. Four channels of compression are available in one unit of nineteen inch rack space. Even at this high packing density, the degree of control over each channel of audio is greater than that found on many conventional two channel compressor/limiters. -
Page 15: Front Panel Controls
Stereo links together pairs of channels of the DN504 Plus for compressing stereo signals. Channel 1 operates as the master for Channel 2, which becomes the slave. Channels 3 and 4 can be linked in the same way. In Stereo mode, the unit still monitors the levels of both channels of each pair to detect when the signal is above the threshold level (on channels 2 and 4, the Stereo switch is replaced by a 'Stereo Slave' light indicator). -
Page 16: Instrument Familiarisation
Instrument Familiarisation: Rear Panel Controls PUSH 115/220-240V NEUTRIK NEUTRIK NEUTRIK NEUTRIK 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 17: 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 18 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 19: Using The Dn504
A mix of instruments can be compressed to give a 'tighter' dynamic effect. Or individual voices or instruments can be treated to give a musical effect unobtainable by any other means. The DN504 Plus Quad Compressor/Limiter offers in a compact unit versatile control over dynamic range, for corrective and for artistic purposes. -
Page 20: 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 21: 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 DN504 Plus has an adjustable knee, variable between 'Hard' and 'Soft': Soft Knee Hard Knee... - Page 22 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 23: Limiting
Limiting By switching any channel of the DN504 Plus to Auto Attack/Release, and setting the compression ratio to a high value greater than 20:1 the DN504 Plus acts as a high quality Quad Limiter. A 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. -
Page 25: Linking To The Console
The output from the DN504 Plus comes back to the channel insert return. By connecting the DN504 Plus at this position in the signal chain, its operation is unaffected by the use of any of the console controls, except Input Gain. -
Page 26: Applications Using The Side Chain
Applications: Side chain inputs Each channel of the DN504 Plus has a Side Chain input, in addition to the normal audio signal input. In normal use, the amount of compression or limiting 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 27: De-Essing
Applications: De-essing De-essing is an important compression technique using the Side Chain. Many singers have high level sibilants 'sss' sounds which detract from their performance. Equalising the signal will reduce the sibilants, but also make the overall vocal sound dull. The sibilants can be selectively removed by compressing only when there is an excessive level of high frequencies. -
Page 28: Ducking
If speech is to be mixed with music from a stereo source, it is best if the music is dropped in level during the speech, and raised during pauses. This can be done automatically by passing the music through Channels 1 and 2 of the DN504 Plus and patching the microphone into the Side Chain input of Channel 1 : Channel Insert Point... -
Page 29: Technical Specification
DN504 Technical Specifications 1.5s 1.5s 1.5s 1.5s PUSH PUSH PUSH PUSH 115/220-240V NEUTRIK NEUTRIK NEUTRIK NEUTRIK NEUTRIK NEUTRIK NEUTRIK NEUTRIK Audio Inputs Four Type Electronically Balanced Impedance (ohms) Balanced Unbalanced Side Chain Inputs Four Type Electronically Balanced Impedance (ohms) Balanced Unbalanced Audio Outputs Four... - Page 30 Dimensions Width 482mm (19 inch) Depth 292mm (11 ½ inch) Height 44.5mm (1 ¾ inch) Weight Nett 4 kg Shipping Options Security cover Transformer input*/output balancing *Input transformer balancing is non-retrofittable and has to be specified with order. Options Ordering Information Parts Number Perspex security cover SCP DN514Plus...
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