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Related Manuals for Klark Teknik Square One Graphic
Summary of Contents for Klark Teknik Square One Graphic
- Page 1 graphic operator manual...
- Page 3 Fax: +44 1562 745371 Email: info@midasklarkteknik.com Website: www.ktsquareone.com Square ONE Graphic Equaliser — Operator Manual DOC02-SQ1GRAPHIC Issue E — April 2010 © Red Chip Company Ltd. In line with the company’s policy of continual improvement, specifications and function may be...
- Page 5 IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol The exclamation point within an equilateral within an equilateral triangle, is intended to triangle, is intended to alert the user to the alert the user to the presence of uninsulated presence of important operating and “Dangerous Voltage”...
- Page 7 Klark Teknik EC-Declaration of Conformity The undersigned, representing the following manufacturer Manufacturer: Address: Midas Klark Teknik Limited Klark Industrial Park, Walter Nash Road, Kidderminster, Worcestershire DY11 7HJ hereby declares that the following product Product Type Number Product Description Nominal Voltage(s) Current Freq.
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Page 9: Table Of Contents
Connecting to unbalanced equipment Powering up the unit Front panel quick reference ___________________________ 11 Rear panel quick reference ___________________________ 12 Front panel features ________________________________ 13 Signal level Graphic EQ section Gain control Filters BYPASS switch POWER on/off LED Square ONE Graphic... - Page 10 Effects of equalisation on voice reproduction Effects of equalisation on music reproduction Audio signal path ___________________________________ 24 Proportional-Q filter response _________________________ 25 Balanced/unbalanced audio __________________________ 30 Square ONE Graphic application notes___________________ 31 Front-of-house Monitors High pass filter (HPF) Low pass filter (LPF)
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Page 11: Welcome
Thank you for purchasing a Klark Teknik Square ONE Graphic graphic equaliser. Klark Teknik has conceived the Square ONE range to offer audio professionals a range of easily accessible, high-performance audio equipment, designed to provide no-compromise sonic quality with a feature set which offers all essential facilities. -
Page 12: Safety Precautions
Any part that is damaged should be properly repaired or replaced. This must be done by a fully trained and authorised service engineer. • Observe all warnings, cautions etc. on any part of the equipment. • Do not remove, hide or deface any warnings or cautions. Square ONE Graphic... -
Page 13: Power
Avoid inserting or dropping foreign objects, such as paper, plastic, metal etc., into any gaps or openings on the equipment, for example, vents. If this happens, turn off the power immediately and unplug the power from the AC outlet. Then have the equipment inspected by the manufacturer's qualified service personnel. Square ONE Graphic... -
Page 14: Installation
Audio connections To ensure the correct and reliable operation of your Square ONE Graphic, only high quality balanced, screened, twisted pair audio cable should be used. XLR connector shells should be of metal construction so that they provide a screen when connected to the unit and should have Pin 1 connected to the cable screen. -
Page 15: Electric Fields
To comply with part 15 of the FCC Rules, any special accessories (that is, items that cannot be readily obtained from multiple retail outlets) supplied with this equipment must be used with this equipment; do not use any alternatives as they may not fulfil the RF requirement. Square ONE Graphic... -
Page 16: Features
Features Features The Square ONE Graphic 1/3 octave, analogue equaliser performs graphic equalisation and filtering, and has the following features: • Two channels. • 30 bands of proportional-Q equalisation per channel via long throw, 45 mm faders. • Electrically balanced input and output per channel via female and male XLR connectors, respectively. -
Page 17: Getting Started
Making sure that the mains power at the power outlet is off, connect the mains cable supplied with your Square ONE Graphic to the mains power outlet and then to the mains socket at the rear of your unit. Square ONE Graphic... -
Page 18: Connecting The Audio Cables
Female XLR Pin 1: Pin 1: Screen/Ground Screen/Ground (not connected at (not connected at unbalanced end) unbalanced end) Pin 3: Ground at Pin 3: Ground at unbalanced end unbalanced end Pin 2: Hot signal Pin 2: Hot signal Square ONE Graphic... -
Page 19: Unbalanced Inserts
Note: Connect insert send with input and insert return with output of effects device. Figure 1: Insert send/return 1/4” TRS connector details Ring Sleeve Sleeve Sleeve Tip (send) Sleeve (ground/shield) Ring Sleeve Tip (return) Sleeve (ground/shield) Figure 2: Insert send/return 1/4” TRS connectors - wiring details Square ONE Graphic... -
Page 20: Connecting To Unbalanced Equipment
Getting started Connecting to unbalanced equipment Ideally, you will be making the best use of the Square ONE Graphic’s low-noise high-headroom balanced inputs by connecting to similarly balanced equipment. However, if you do have to connect to unbalanced devices, the following wiring is recommended for best results (see Figure 3): •... -
Page 21: Front Panel Quick Reference
Front panel quick reference Front panel quick reference The Klark Teknik Square ONE Graphic is a dual, 30-band, third octave graphic equaliser. Low pass filter switch with LED on/off indicator (above) Channel A 45 mm faders BYPASS filter switch with... -
Page 22: Rear Panel Quick Reference
REPLACE WITH SAME TYPE OF FUSE. MOUNT IN RACK ONLY Mains power socket and fuse compartment Channels A and B: input and output audio connections, comprising a male and a female XLR socket each with a 1/4”, TRS-balanced jack socket Square ONE Graphic... -
Page 23: Front Panel Features
Power is supplied to the unit via the rear panel; an LED on the front panel provides power on/off indication. Signal level The Square ONE Graphic provides a SIGNAL and a CLIP LED per channel for the purpose of level metering. The levels are as follows: •... -
Page 24: Filters
When switched on, the BYPASS switch bypasses the input gain and graphic equalisation. POWER on/off LED The blue POWER LED on the front panel illuminates to indicate that mains power is applied to the unit. The unit does not have a power on/off switch. Square ONE Graphic... -
Page 25: Rear Panel Features
Mains supply Mains power is supplied to the Square ONE Graphic by a fused IEC socket on the rear of the unit. The Square ONE Graphic contains an auto voltage sensing switching mode power supply that will operate where the nominal mains voltage is in the range 100VAC to 240VAC. -
Page 26: Audio Connections
Other features Power-off bypass relays The Square ONE Graphic incorporates a fail-safe hardware bypass to prevent audible thumps when the unit is switched off or if any of its internal power rails should fail. The bypass comprises relays that directly connect the inputs and outputs of each channel. The relays disconnect the outputs and switch to bypass every time the unit is switched off or on power rail failure. -
Page 27: Example Of System Connection
Example of system connection EQUALISER X-Over & Amplifiers EQUALISER X-Over & Amplifiers Centre Cluster Delay FoH Delay FoH Main FOH Main FOH Stage Monitors EQUALISER X-Over & X-Over & Amplifiers Amplifiers Monitor Console Delay Line FOH Console Square ONE Graphic... -
Page 28: Using The Square One Graphic
The Square ONE Graphic can be used to create filter effects, for example, the effect of someone speaking on the telephone, using the 30 equaliser bands and the high and low pass filters in conjunction with a compressor to create a de-esser for tonal correction of instruments or vocals and many other creative uses. -
Page 29: Live Use - Monitors
Using the Square ONE Graphic Live use - monitors Monitors used on stage often need equalisation to remove any peaks in their frequency response in order to prevent feedback from on-stage microphones where those frequencies exceed the maximum gain before feedback level. -
Page 30: Equalising A System
A compromise may need to be made in an effort to equalise the sound for the whole area rather than just the centre FOH position. Square ONE Graphic... - Page 31 During the performance, the FOH or monitor engineer may want to have a microphone or solo signal feed for the RTA so that feedback may be easily detected and rectified. Square ONE Graphic...
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Page 32: Effects Of Equalisation
1kHz and 4kHz can produce listener fatigue. Vocals can be highlighted by slightly boosting vocals at 3kHz whilst simultaneously slightly cutting instruments at that frequency. 5k, 6k3, 8k Accentuation and clarity of voice. 10k, 12k5, 16k Too much boost causes sibilance (’sss’). Square ONE Graphic... -
Page 33: Effects Of Equalisation On Music Reproduction
Reduction at 5kHz makes overall sound more distant and transparent. Reduction of tape hiss and system noise. 1k25 to 8k governs overall clarity and definition. 10k, 12k5, 16k Cymbals and overall brightness. Too much boost causes sibilance. Reduction of tape hiss and system noise. Square ONE Graphic... -
Page 34: Audio Signal Path
Audio signal path The following diagram shows the path of the audio signal for each channel. BYPASS Switch -40dBu +22dBu High pass filter Low pass filter Graphic EQ Graphic EQ PUSH Output Input Two stages Switch Switch Square ONE Graphic... -
Page 35: Proportional-Q Filter Response
Proportional-Q filter response Proportional-Q filter response The most important design decision for the Square ONE Graphic was determining the equaliser response. Proportional-Q equalisation, as used on previous Klark Teknik analogue graphic equalisers, offers some key advantages over the more numerous Constant-Q equalisers on the market. Namely, at low amounts of cut or boost, the width of the filter is relatively broad and becomes narrower as the amount of boost or cut is increased, giving a more 'focused' response. - Page 36 Here, far more of the audio spectrum is affected due to each band being broader as a consequence of maintaining the same Q value. Square ONE Graphic...
- Page 37 Figure 7: Constant-Q equaliser ‘narrow’ mode full boost and cut The advantage of Proportional-Q equalisation is that the EQ bands are wider at lower amounts of boost and cut. They become narrower as greater amounts are applied, thus giving the optimum balance of smoothness Square ONE Graphic...
- Page 38 Figure 8 and Figure 9 show the Square ONE Graphic responses for both 2dB and full scale boost and cut. Note that the smooth combining of the bands for small amounts of boost and cut is very similar to that of the Constant-Q equaliser in its 'wide' mode.
- Page 39 Figure 9: Square ONE Graphic response full boost and cut In addition to the graphic equaliser section, the Square ONE Graphic also provides high pass and low pass filters. These can be used to enhance the intelligibility of wedge monitors by cutting out extraneous low and high frequency noise and therefore allowing higher SPLs to be used.
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Page 40: Balanced/Unbalanced Audio
(CMRR). The electronically balanced input and output connections of the Square ONE Graphic have the benefit of high common mode rejection (CMR), which eliminates externally induced interference such as mains hum etc. CMR is the ability of a balanced input to reject the part of the incoming signal that has the same amplitude and opposite phase on both input terminals, referenced to ground. -
Page 41: Square One Graphic Application Notes
Square ONE Graphic application notes Front-of-house The graphic EQ filters of the Square ONE Graphic have been carefully selected to allow tonal correction with a minimum of ripple between adjacent bands. While, at the same time the proportional-Q nature of the filters ensures that in the event of acoustic feedback a tightly-focussed cut response is instantly available just by moving the fader. -
Page 42: Technical Specification
250, 315, 400, 500, 630, 800, 1.00k, 1.25k, 1.60k, 2.00k, 2.50k, 3.15k, 4.00k, 5.00k, 6.30k, 8.00k, 10.0k, 12.5k, 16.0k, 20.0k Due to a policy of continual improvement, Klark Teknik reserves the right to alter the function or specification at any time without notice. -
Page 43: Frequency Chart
In addition to these, various amounts of CONTRALTO higher harmonic content will also be produced. BARITONE BASS SNARE & TOMS BASS DRUM DRUM KIT (BASS DRUM/SNARE+TOMS) GUITAR Square 1 Graphic HIGH PASS FILTER Square 1 Graphic LOW PASS FILTER Square ONE Graphic... -
Page 44: Crib Sheet
Crib sheet Crib sheet GAIN BYPASS SIGNAL CLIP POWER graphic GAIN BYPASS Location: Date: Application: GAIN BYPASS SIGNAL CLIP POWER graphic GAIN BYPASS Location: Date: Application: Square ONE Graphic... -
Page 45: Service Information
The service manual for this equipment is available for purchase. Please contact your local distributor for details. Routine maintenance To help keep your Square ONE Graphic unit in good working order and to make sure it gives you optimum performance, we recommend that you carry out the following about once every month: •... - Page 46 Service information Square ONE Graphic...
- Page 48 Midas Klark Teknik Limited Klark Industrial Park, Walter Nash Road, Kidderminster. Worcestershire. DY11 7HJ. England. Tel: +44 1562 741515, Fax: +44 1562 745371 Email: info@midasklarkteknik.com Website: www.ktsquareone.com...
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