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DN360
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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Walter Nash Road, Kidderminster, Worcestershire. DY117HJ. England Tel:(44)(0)1562741515. Fax: (44)(0)1562745371 CompanyRegistration No: 2414018 SIGNAL PROCESSING BY DEFINITION BETTERBYDESIGN DESIGNEDFOR APUREPERFORMANCE DECLARATION OF CONFORMITY We, KlarkTeknik Group (UK) Plc of, Klark Teknik Building, Walter Nash Road, Kidderminster, Worcestershire, DY11 7HJ Declare that a sample of the following product:- Product Type Number Product Description Nominal Voltage (s) Current Freq DN360 Gr
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THANKYOU FOR USINGTHIS KLARKTEKNIK PRODUCT To obtain maximum performance from this precision electronic product, please study these instructions carefully. Installation and operating the equaliser is not complicated, but the flexibility provided by its operating features merits familiarisation with its controls and connections. This unit has been prepared to comply with the power supply requirements that exist in your location. Precautions Before connecting the unit to the mains power, ensure th
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AFTERYOU HAVE UNPACKEDTHE UNIT Save all the packing materials - they will prove valuable should it become necessary to transport or ship this product. Please inspect this unit carefully for any signs of damage incurred during transportation. It has undergone stringent quality control inspection and tests prior to packing and left the factory in perfect condition. If, however, the unit shows any signs of damage, notify the transportation company without delay. Only you, the consignee, may institu
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Introduction The graphic equaliser is a vital component in any audio system. The entire signal passes through it and so any limitations imposed by the equaliser will compromise the performance of the whole system. For example, an indifferently designed equaliser may introduce severe phase distortion, noise and other anomalies related to centre frequency accuracy, filter shape and attenuation accuracy which may manifest themselves as an overall deterioration in the perceived sound quality of the
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DN360 Graphic Equaliser The Klark Teknik DN360 is a dual channel, 30 band equaliser offering 12dB of cut or boost in 1/3 octave steps between the frequencies of 25Hz and 20 kHz. FilterShape and CombiningAction ISO CENTRE FREQUENCIES (in Hz) 20 31 50 80 125 200 315 500 800 1.25K 2K 3.15K 5K 8K 12.5K 20K 25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K 5dB 1/3 Octave Band Equaliser Filter Curves At the heart of any graphic equaliser is the bank of filters used to shape the signal response
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The nature, shape and way in which individual equaliser filters combine, has a profound effect on the control provided by the equaliser and on the resulting quality of sound. The majority of applications within the sound reinforcement, broadcast and recording fields, require a smooth and continuous equalisation response curve in order to correctly contour the overall response characteristics of a sound system, loudspeaker, recording effect or audio channel. To achieve this, the individual filter
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Instrument Familiarisation Front Panel Functions The scale switch selects maximum boost and cut for the equaliser of either 6dB or12dB. The centre position of this switch performs the bypass function, The high quality faders used in this equaliser have an which silently removes the graphic equaliser section oil-damped action for smooth operation and feature a from the signal path. centre detent following accurate "flat" setting. The powerswitch is a two pole type, isolating both the live and neu
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Specifications Input Type Transformer balanced Impedance ( 20k alanced 10k Unbalanced Output Transformer balanced Type 600 Min. Load impedence Source impedance Max. Level dBu Performance Frequency response ±0.5dB(20Hz-20kHz) Distortion (@ +4dBm) <0.01% @ 1kHz Equivalent input noise <-90dBu (20Hz-20kHz unweighted) Channel separation >75dB @ 1kHz Overload indicator +19dBu Level Control +6dB to - Filters Type *MELT Centre frequencies 2x30 ISO 25Hz - 20kHz 1/3 octave Tolerance ±5% Maximum boost/cut
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7 B2637-6.sch-1 - Thu Aug 19 16:13:29 1999
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The Use of Graphic Equalisers Equalisers may be used for corrective or creative purposes and the Klark Teknik DN360 is applicable in both live sound and studio applications. For studio use, a pair of 1/3 octave equalisers might typically be used to compensate for deficiencies in the control room acoustics and in this instance, the precision allowed by 30 bands is a great advantage. Because it is almost impossible to set up an equaliser accurately without first analysing the room response, the ce
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In live sound applications, graphic equalisation is almost always applied separately to the stage monitor of foldback system to reduce the level of those frequencies that would otherwise cause feedback problems. These problems came about due to peaks in the frequency response curves of the monitor speaker systems, monitor positioning, and sound reflected from the stage walls. An analyser is probably best employed to do this effectively but many experienced engineers rely on their ears. In additi
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Table 1: Effects of Equalisation onVoice Reproduction 1/3 Octave centre frequency (Hz) Effect on voice 40, 50, 63, 80,100,125, Sense of power in some outstanding bass singers. 160, 200, 250, Voice fundamentals. 315, 400, 500 Important for voice quality. 630, 800, 1k Important for voice naturalness. Too much boost in the 315 to 1k range produces a telephone like quality. 1.25 to 4k Vocal fricatives - accentuation of vocals. Important to speech intelligibility. Too much boost between 2 and 4kHz ca
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Equalising a Sound System When equalising a sound system you should always remember just what it is you are trying to achieve. Two fundamental reasons for equalization are:- 1. To increase the potential gain or power output of the system before feedback. 2. To improve the naturalness or intelligibility of the sound system. In a space with poor acoustics or high levels of background noise, the most natural sound may well not be the most intelligible - a compromise must therefore by reached betwee
