Klark Teknik Square One Graphic Operator'S Manual Download Page 1

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Summary of Contents for Square One Graphic

Page 1: ...graphic operator manual DOC02 SQ1GRAPHIC_Op_IssE_printdata pdf 1 27 04 2010 10 06 44...

Page 2: ...DOC02 SQ1GRAPHIC_Op_IssE_printdata pdf 2 27 04 2010 10 06 44...

Page 3: ...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 specif...

Page 4: ...DOC02 SQ1GRAPHIC_Op_IssE_printdata pdf 4 27 04 2010 10 06 44...

Page 5: ...and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete ou...

Page 6: ...DOC02 SQ1GRAPHIC_Op_IssE_printdata pdf 6 27 04 2010 10 06 44...

Page 7: ...e date Kidderminster UK 15th April 2010 General Manager AVP Product Development Printed name John Oakley Printed name Alex Cooper Product Type Number Product Description Nominal Voltage s Current Freq...

Page 8: ...DOC02 SQ1GRAPHIC_Op_IssE_printdata pdf 8 27 04 2010 10 06 44...

Page 9: ..._________________ 6 Getting started______________________________________ 7 Unpacking 7 Checking the mains fuse 7 Installation 7 Connecting the power cable 7 Connecting the audio cables 8 Balanced I O...

Page 10: ...________ 22 Effects of equalisation on voice reproduction 22 Effects of equalisation on music reproduction 23 Audio signal path ___________________________________ 24 Proportional Q filter response __...

Page 11: ...efficient manufacturing methods and will give you many years of reliable service The Square ONE Graphic is a dual 30 band third octave graphic equaliser It incorporates long throw 45 mm faders and has...

Page 12: ...o rain or moisture To avoid electrical shock do not remove covers Refer servicing to qualified personnel only The power supplies even the DC ones have a high current General precautions The following...

Page 13: ...ngineers We strongly recommend that for safety and to optimise the life and performance of the equipment the mains cable plug is removed from the power outlet when the equipment is not to be used for...

Page 14: ...mounting it directly above power amplifiers or other devices that radiate significant amounts of heat such as radiators and heaters Keep the equipment out of direct sunlight Where necessary use fan c...

Page 15: ...used in an electromagnetic field that is amplitude modulated by an audio frequency signal 20Hz to 20kHz the signal to noise ratio may be degraded Degradation of up to 60dB at a frequency correspondin...

Page 16: ...Ds Gain control per channel for continuous adjustment of channel gain Fixed 80Hz high pass filter per channel Fixed 12kHz low pass filter per channel Input gain filters and graphic equalisation on eac...

Page 17: ...e Before installing the equipment you need to make sure that the mains fuse fitted is of the correct type and rating for your unit To do this follow the instructions in Checking replacing the mains fu...

Page 18: ...anced I O For unbalanced I O connect the audio cables as shown below 1 3 2 1 2 3 Pin 2 Hot signal Pin 3 Cold signal Pin 1 Screen Ground Female XLR Male XLR Pin 1 Screen Ground Pin 2 Hot signal Pin 3 C...

Page 19: ...4 TRS connector details Figure 2 Insert send return 1 4 TRS connectors wiring details Note Connect insert send with input and insert return with output of effects device Sleeve ground shield Tip send...

Page 20: ...nector Connect the ve pin 3 of the balanced connection to the common ground terminal on the unbalanced connector Connect the ground pin 1 of the balanced connection to the common ground terminal on th...

Page 21: ...GAIN SIGNAL CLIP A B 0 0 2k 1 80 45 mm faders POWER on off indicator illuminates to show power is on High pass filter switch with LED on off indicator above GAIN rotary control knob Level metering wi...

Page 22: ...CONTINUED PROTECTION AGAINST RISK OF ATTENTION CAUTION FIRE REPLACE WITH THE SAME TYPE AND VALUE FUSE INDICATED REMPLACER PAR UN FUSIBLE DE M ME TYPE COMME INDIQU RISK OF ELECTRIC SHOCK DO NOT OPEN NO...

Page 23: ...ost gain control such that internal clipping due to excessive EQ that is if a high input level is further boosted by the use of EQ will also be shown Graphic EQ section The graphic EQ section of the S...

Page 24: ...y and allow higher gain before feedback To audition the effect of the filters just switch them on or off and note the effect BYPASS switch Each channel has BYPASS pushbutton on off switch with red LED...

Page 25: ...ge sensing switching mode power supply that will operate where the nominal mains voltage is in the range 100VAC to 240VAC The correct mains lead for the country to which the unit was shipped is suppli...

Page 26: ...es 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...

Page 27: ...tion EQUALISER FOH Console Delay Line EQUALISER EQUALISER X Over Amplifiers X Over Amplifiers X Over Amplifiers X Over Amplifiers Delay FoH Delay FoH Centre Cluster Main FOH Main FOH Stage Monitors Mo...

Page 28: ...trying to engineer using the system Again it is common to use an RTA and measurement microphone to set up the equaliser using additive and subtractive equalisation to correct problems in the room It...

Page 29: ...sense of hearing that enables them to remove these frequencies by ear The Square ONE Graphic s 30 EQ bands allow a majority of feedback to be removed from the monitors High and low pass filters are p...

Page 30: ...e immediately noticeable with pink noise can be detected and corrected before equalisation Especially check the system s crossover points as these may reveal problems with the system Note that poor co...

Page 31: ...isation should act as a warning that there may be an underlying problem which may need rectifying first for example phase cancellation blown drivers etc During the performance the FOH or monitor engin...

Page 32: ...e like quality 1k25 to 4k Vocal fricatives Accentuation and clarity of voice Important to speech intelligibility Too much boost between 2kHz and 4kHz can mask certain speech sounds for example m b and...

Page 33: ...percussion 630 800 1k Fundamentals and harmonics of strings keyboards and percussion Boosting 600 1kHz range can make instruments sound horn like 1k25 to 4k Drums guitar accentuation of vocals string...

Page 34: ...following diagram shows the path of the audio signal for each channel Switch Switch Switch BYPASS Input Output High pass filter Graphic EQ Two stages Graphic EQ Low pass filter 40dBu 22dBu PUSH 80 12k...

Page 35: ...um gain 0dB when cutting which results in a notch filter response In all types of graphic equalisers one of the key issues is how the summing of adjacent EQ bands alters the frequency response Lower Q...

Page 36: ...f boost and cut Figure 6 and Figure 7 show the problem that occurs with using this response for full boost and cut Here far more of the audio spectrum is affected due to each band being broader as a c...

Page 37: ...f 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 d B 15...

Page 38: ...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 o...

Page 39: ...quare 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 a...

Page 40: ...shield that surrounds the hot and cold cables An unbalanced connection only has two cables one of which the grounded shield is also used for signal return As the hot and cold cables are of equal volta...

Page 41: ...always visible at a glance High and low pass filters allow the frequency limits to be accurately controlled for each output This last feature while very useful for conventional wedge monitors really...

Page 42: ...logue electronically balanced Pin 2 hot 2k Ohms 60 Ohms 22dBu 3dB drop in level relative to open circuit voltage when driving 200 Ohms Performance Frequency response Dynamic range Noise floor Gain 0 5...

Page 43: ...OMS BASS DRUM SNARE TOMS GUITAR 315 400 500 630 800 1k 1k25 1k6 2k 2k5 3k15 4k 5k 6k3 8k 10k 12k5 16k 20k 25 31 5 40 50 63 80 100 125 160 250 200 Hz Hz 315 400 500 630 800 1k 1k25 1k6 2k 2k5 3k15 4k 5...

Page 44: ...plication Date BYPASS 2k 1 80 POWER SIGNAL CLIP A B 12 12 12 12 12 12 12 12 graphic BYPASS 2k 1 80 6 GAIN 0 6 GAIN 0 BYPASS 2k 1 80 POWER SIGNAL CLIP A B 12 12 12 12 12 12 12 12 graphic BYPASS 2k 1 80...

Page 45: ...the unit using a dry lint free cloth Do not use harsh abrasives or solvents When cleaning the unit take great care not to damage faders pushbuttons etc Checking replacing the mains fuse The equipment...

Page 46: ...Service information 36 Square ONE Graphic DOC02 SQ1GRAPHIC_Op_IssE_printdata pdf 46 27 04 2010 10 06 47...

Page 47: ...DOC02 SQ1GRAPHIC_Op_IssE_printdata pdf 47 27 04 2010 10 06 47...

Page 48: ...Walter Nash Road Kidderminster Worcestershire DY11 7HJ England Tel 44 1562 741515 Fax 44 1562 745371 Email info midasklarkteknik com Website www ktsquareone com 2010 Red Chip Company Ltd DOC02 SQ1GRAP...

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