Kairos-KS26 Users Manual
Contents
1. Quick Reference Guide 2 Display 2 Important Safety Information 5 Regulatory Compliance 5 Thanks and Unpacking 6 Introduction and Key Features 7 Introduction 7 The User Guide 8 Front Panel 9 Input Signal Indicators 9 Preset Store and Recall 9 Channel Select Buttons 9 Text Display 10 Parameter Knobs 10 Output Signal Limiter Indication 10 Mute Buttons and Status LEDs 10 Secure Button on the rear 10 Rear Panel 11 Power Inlet 11 Network Expansion Port 11 Audio Input Connectors 11 Audio Output Connectors 11 Communications Port Connector 11 Operation 12 Starting up 12 Selecting a Factory Preset 12 Creating a Preset 12 Navigation and Viewing Parameters 13 Navigation 13 Presets 14 Preset Recall 14 Preset Store 15 DSP Processing layout 16 Input DSP block diagram 16 Output DSP block diagram 16 Stereo Mono Formats 16 DSP processing 16 Input Channels 17 Gain 17 Delay 17 High Pass Filter 18 Parametric Equalization 18 High and Low shelving filters 19 Parametric filters 19 Output Channels 20 Gain and Polarity 20 Delay 20 High and Low Pass Filters 21 Parametric Equalization 22 EST 1976 Limiters 23 Routing 24 Utilities 25 Utility functions 25 Bag End CD and CDS Series Loudspeaker Presets 26 Preset Output Assignments 27 EQ and Filter Response Graphs 28 30 Technical Specification 31 General 31 Processing 312. If the subwoofer needs more delay due to it being closer to the intended listening area than the CD series loudspeaker the subwoofer output delay can be increased to more than 10 ms If the subwoofer needs less delay due to it being farther away from the intended listening area than the CD series loudspeaker the subwoofer output delay can be decreased to less than 10 ms Creating a Preset In addition to the Factory Presets the unit has 22 open presets These presets are stored in locations 1 and 2 respectively they can be used to develop settings for any loudspeaker combination and are recalled in the same way as the Factory Presets described above These presets are also unlocked and the user can name and store them and make their own edited versions in any free preset location Page 12 Navigation and Viewing Parameters Many of the processing elements in each input and output path have features that may be controlled by the user such as gain frequency or limiter threshold We call these adjustable features parameters A parameter may be adjusted when it is displayed by turning one of the three parameter knobs Each of the three parameter knobs is associated with a zone on the display Adjusting the leftmost parameter knob will change the value of the parameter showing in the leftmost zone of the display and so on Turn a knob clock wise to increase the value of a parameter or anti clockwise to decrease it The knobs are veloci
3. Connectors 31 Page 4 EST 1976 Important Safety Information Please read carefully and keep the following instructions and safety information Heed all warnings and follow all instructions e Do not remove covers There are no user serviceable parts inside please refer servicing to qualified service personnel e This equipment must be earthed e Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus Only use attachments accessories specified by the manufacturer e Servicing is required when the apparatus has been damaged in any way such as the power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the appara tus has been exposed to rain or moisture does not operate normally or has been dropped Regulatory Compliance This product complies with both the EMC Directive 89 336 EEC and the Low Voltage Directive 73 23 EEC as issued by the Commission of the European Community Compliance with these directives imply conformity with the following European standards e EN60065 Product safety e EN55103 1 Electromagnetic Interference Emission e EN55103 2 Electromagnetic Susceptibility Immunity This product is intended for operation in the E2 commercial amp light industrial and E3 urban outdoors Elec tromagnetic Environments Page 5 E
4. needs to occur first minimize amplifier clip ping or limiting the peak voltage to a loudspeaker These both assume the use of the recommended amplifi er s for a particular Bag End loudspeaker system In all cases the amplifier should be set for a voltage gain of 26 dB Amplifiers run in bridged mode and set to 26 dB gain will have a gain of 32 dB This is accounted for in the limiter thresholds Do not set the gain for amplifiers run in bridged mode to 32 dB This will result in 38 dB of gain for the amplifier and the amplifier will clip sooner at a lower input voltage and drive the loudspeaker hard than anticipated If different limiter threshold settings are desired for a particular application they should be set at approxi mately 7 7 dBu or 5 5 dBV below the maximum peak level desired As an example let s say we want to keep a Bag End PT4 1000 amplifier from clipping At a gain setting of 26 dB its rms input voltage sensitivity is 5 0 V This means its peak input voltage sensitivity is 7 07 V This is the peak input voltage that will drive the amplifier to its maximum level assuming no current limiting or other protection mechanisms are encountered We need to limit the output of the KS26 channel driving the PT4 1000 to a peak voltage of no more than 7 07 V which is 17 dBV or 19 2 dBu Setting the limiter threshold to about 11 5 dB should keep the amplifier out of clipping Limiter Threshold Setting dBV based on input voltage to ampl
5. of their input cable shields Communications Port Connector Bag End Kairos DSP series processor may be controlled entirely from another controller typically a Personal Computer running an application that is compliant with the ObCom standard Connection will normally be made to the controller via this serial port connector This port is also used for updating the firmware in the unit Note that the communications port is NOT disabled when the front panel is made secure using the se cure button Page 11 EST 1976 Starting up The unit will energize as soon as power is applied to the IEC inlet there is no power switch During the start up process the firmware application model number and version numbers are displayed and the outputs are muted until the unit has completed its internal checks Once the start up routines are complete and the unit is ready to pass audio the DSP signal path will be restored to the current settings when it was last powered down and the audio signal is gradually ramped up to its correct level Selecting a Factory Preset The Bag End Kairos DSP series processors have a library of Factory Presets designed to suit a range of applications Factory Presets contain some parameters that are fixed and hidden from view the remainder of the DSP parameters are available for user manipulation The number and type of hidden parameters is dependant on the Factory Preset Typically crossover freque
6. to 25 4 kHz 1 36 octave steps LP filter frequency 20Hz to 25 4kHz and off 1 36 octave steps LP HP filter frequency 12 18 amp 24dB octave Bessel and Butterworth Delay 12 24 and 48dB octave Linkwitz Riley 4th or 8th order Hardman Input 400ms output 80ms Limiter High performance limiter adjustable threshold in O 2dB EQ Frequency steps automatic time constants 10Hz to 25kHz 1 36 octave steps EQ Gain 15dB to 15dB 0 2dB steps EQ Width 5 0 to 0 1 octaves bandwidth 1 36 octave steps Connectors Audio Inputs 3 pin female XLR Audio Outputs 3 pin male XLR Serial comms DB9 Network comms Future option Mains 3pin IEC Mains Power Universal switch mode PSU 85v to 250v AC 50 60Hz Consumption 2bwatts Dimensions 44mm H 482mm W 254mm D Weight 2 7 Kgs net Page 31 EST 1976 2013 by Bag End Loudspeakers and Electronics http www BagEnd com
7. u sed for parametric equiliza tion bandwidth and switch between stereo and mono mode The device automatically adjusts for the variations in display contrast as the temperature of the LCD chang es The screen contrast utility control sets the base contrast of the screen and also allows optimization for a given viewing angle Parametric equalization width parameters can be displayed in either or bandwidth expressed in octaves Care should be taken when swapping between mono and stereo mode as the parameter set for the left hand channels will be copied to the right hand side overwriting those settings This is not reversible and could represent quite a significant and potentially damaging change to the processing Page 25 EST 1976 Bag End CD and CDS Series Loudspeaker Presets Preset Function CD10 CD 10 10 2 way Bi amped Loudspeaker System CNN CNN CD 10 10 2 way B iamped Loudspeaker System and CD B18 Subwoofer CD 10 10 2 way Bi amped Loudspeaker System and DM 215 Subwoofer CDS 10 10 2 way Passive Full Range Loudspeaker System CDS 10 10 2 way Passive Full Range Loudspeaker System and CDS 18 Subwoofer 5 CDS 10 10 2 way Passive Full Range Loudspeaker System and DM 215 Subwoofer CD 12 12 2 way Bi amped Loudspeaker System cB CD 12 12 2 way B iamped Loudspeaker System and CD B18 Subwoofer CD 12 12 2 way Bi amped Loudspeaker System and CD B218 Subwoofer CD 12 12 2 w
8. 1 509 aof wou sizwa uerdusroo 581408 dwerg c1 09 wel size a9 qns 8128 8 dweig 61 00 09 auBu 16 09 qns 818 8 duieig 61 02 09 Wel G1 02 84191 09 dweiq 81 09 ao 612 410 E wE qns 8 21 502 xrmzsm wezeso 9112500 qns 812 502 8 21 500 09 4 81 600 el 81 509 qns 81 5099 21 500 ao 4H 21 09 wei siz wa ans 9 21 00 ag 6 8126 00 EOM E qns 8128 8 dueiq 2 09 ao uei 4H 21 09 2 qns gig 8 dwerg 21 09 00 sLz NQ EDEN qns 612410 8 anissed 01 509 wWel BLSOD 9181 5098 emssed 01 502 wusna weisizwa nssizWa a duem 01 02 ag 819 09 BERE qns 818 09 8 01 09 51 500 409 1500 CC 61211074109 mf v Page 27 syuawufissy 31010 198 4 EST 1976 EQ and Filter Response Graphs Magnitude dB Butterworth 6 f 5 o 12 Oo 718 t gt 24 30 1001 ide Frequency Hz 6dB Oct 12dB Oct 18dB Oct 24dB Oct 48dB Oct Linkwitz Riley 6 0 6 312 18 24 730 e 3 4 1001 10 1 10 Frequency Hz 12dB Oct 24dB Oct 48dB Oct Page 28 ut EST 1976 EQ and Filter Respon
9. EST 1976 MAROS SERIES MONAL LOUDOPEAKEH PROCESSORN sw CHANNEL 95 Su Os Os Om Oe Os Os sw a gt Mur mute wur mute B BH INPUT PRESET PARAMETER 1 2 3 4 5 6 e O OPERATION MANUAL 2013 by Bag End Loudspeakers and Electronics http www BagEnd com EST 1976 Quick Reference Guide O CHANNEL Ow Ow Ow BH HH 5 ED On Oa Ow o2 smi O 4 gt e mute MUE MUTE H mute mute A B 1 NENE Y Zee fi INPUT PRESET PARAMETER 1 4 5 Display The LCD displays preset and parameter information The default screen is shown after start up and displays the number and name of the current preset on the lower line of text When navigating around the adjustable parameters other information is shown Channel Select Buttons Display The currently selected input or output channel is shown in the top left corner of the display Pressing the channel select buttons scrolls through the available inputs and outputs If operating stereo linked the channel pair is shown For example CH A B means both input A and B parameters Edit Parameter Buttons The name of the edit parameter page is displayed in the bottom left portion of the LCD Pressing the e
10. ST 1976 Thanks and Unpacking Thank you for choosing a Bag End Kairos DSP series loudspeaker management system for your application Please spare a little time to study the contents of this manual so that you obtain the best possible perfor mance from this unit All Bag End products are carefully engineered for world class performance and reliability If you would like further information about this or any other Bag End product please contact us We look forward to helping you in the near future Unpacking the Bag End Kairos DSP series processor After unpacking the unit please check carefully for damage If damage is found please notify the carrier concerned at once You the consignee must instigate any claim Please retain all packaging in case of fu ture re shipment Page 6 EST 1976 Introduction and Key Features Introduction The Bag End Kairos DSP series of loudspeaker processors represent the current state of the art Taking ad vantages of the latest advances in analog to digital conversion and digital signal processing technologies the units achieve performance levels that have only recently been made possible Key Features e Bag End minimal signal path design e Sonically superb ADC DAC combination a carefully matched pairing of the best devices from Burr Brown and Wolfson e Newly released family of Analog Devices SHARC DSP Extended bandwidth 96kHz sampling frequency provides for a nominally fla
11. ay Bi amped Loudspeaker System and DM 215 Subwoofer CDS 12 12 2 way Passive Full Range Loudspeaker System CDS 12 12 2 way Passive Full Range Loudspeaker System and CDS 18 Subwoofer CDS 12 12 2 way Passive Full Range Loudspeaker System and CDS 218 Subwoofer CDS 12 12 2 way Passive Full Range Loudspeaker System and DM 215 Subwoofer CD 15 15 2 way Bi amped Loudspeaker System CD 15 15 2 way Bi amped Loudspeaker System and CD B18 Subwoofer CD 15 15 2 way Bi amped Loudspeaker System and CD B218 Subwoofer CD 15 15 2 way Bi amped Loudspeaker System and DM 215 Subwoofer CDS 15 15 2 way Passive Full Range Loudspeaker System CDS 15 15 2 way Passive Full Range Loudspeaker System and CDS 18 Subwoofer CDS 15 15 2 way Passive Full Range Loudspeaker System and CDS 218 Subwoofer CDS 15 15 2 way Passive Full Range Loudspeaker System and DM 215 Subwoofer HEP MERE Presets 23 45 Available for User Programs Page 26 1uBu 4H 21 09 1 4H 21 09 4H 01 09 4H 01 09 14 4H 01 09 1 GL S 1 GL S 1 91 5 iu 91 5 1 GL 31 G1 146 31 G1 31 G1 1 71 5 1 71 5 1 71 5 1 71 5 146 31 21 3121 1460 1121 146 7121 1 01 5 1 01 5 1 01 5 146 4101 4101 1 4101 ag Bu a z JAG 51 500 Y GLZ ING 09 qw6u giz sag IUS Wel 812 509 qns 912 502 8 61 502 aof wbwersm we ssoo 881500 qns 815012 9
12. dit select buttons moves through the available parameter pages for the current input or output Parameter Knohs Up to three parameters are shown on the display The parameter name is shown with its current value below Where appropriate parameters are grouped according to function For example the parametric equal ization page shows center frequency width and gain Turning a parameter knob clockwise will increase the value of a parameter turning anti clockwise will decrease it Turning a knob rapidly will cause the action to accelerate so the value changes more rapidly Mute Buttons The LED s next to the mute buttons indicate their current status Pressing a mute button toggles between the mute on and off Store Button The unit has 45 preset locations To store a preset in a location press the store button and use the param eter knobs to select the preset location and name the preset Pressing the store button again completes the task Pressing any button other than store during the process cancels the procedure Recall Button To recall a preset press the recall button and use parameter knob A to select the required preset Pressing the recall button again will activate the preset You will then be asked to confirm by pressing recall once more As with the store function pressing any button other will cancel the process Page 2 EST 1976
13. essing block If the channel you scroll to does not have the cur rently viewed processing block the next one will be shown instead When the unit powers up the settings will be the same as those when the unit was last switched off Presets The device contains a total of forty five user and Factory Presets The user cannot overwrite the factory preset programs Preset Recall To select an existing preset press the Recall Button so the indicator above it illuminates Turn parameter knob a until the required preset number is shown on the display Factory Presets are indicated by a box symbol appearing after the preset number Press the Recall Button again to activate the Preset Pressing any other button will cancel the operation Page 14 SELECT PRESET TO RECALL RECALL O RECALL Users can develop their own Preset based on one of the Basic or Factory Presets stored within the device Once a basic or user Preset has been recalled a user has complete freedom to adjust any or all of the pa rameters Factory Presets can be used as the basis for user Presets but they have some parameters that are predefined as a function of the loudspeaker system These parameters are hidden from the user as they should be constant regardless of application Preset Store To store the current Preset in a user location press the Preset Store Button so the indicator above it illumi nates Turn the first parameter knob until the required Prese
14. ifier Limiter Threshold 20 log Max Voltage 5 5 peak Limiter Threshold Setting dBu based on input voltage to amplifier Max Voltage 0 775 Limiter Threshold 20 lg een As a different example let s say we want to keep the maximum peak voltage to the high frequency section of a loudspeaker from exceeding 63 V This is equivalent to a peak level of 36 dBV or 38 2 dBu The am plifier has 26 dB of gain so the peak input to the amplifier should not exceed 10 dBV or 12 2 dBu A limiter setting of about 4 5 dB should accomplish this Limiter Threshold Setting dBV based on output voltage from amplifier Limiter Threshold 20 log Max Voltage Amplifier Gain 5 5 peak Limiter Threshold Setting dBu based on output voltage from amplifier Max Voltage 0 775 Limiter Threshold 220 log peak Amplifier Gain 7 7 Page 23 e Knob a Threshold 4 to 20dBu in O 2dB steps A high performance low distortion limiter is provided on each output Threshold is user adjustable all oth er parameters are carefully calculated dependant on configuration to provide clean and effective control of signal dynamics Routing e Knob a Output source selectable Input A Input B or Sum A B Configures the routing from input to output This function is only available in mono format Presets Page 24 Utility functions Three utility functions are provided to adjust screen contrast the display units
15. ncies output delay and some EQ s are hidden Those settings are a function of the loudspeaker cabinet design and should not require adjustment for different applications To recall a Factory Preset for a particular cabinet or system press Recall and use the left hand param eter knob a to scroll through the available Factory Preset locations as indicated by a box symbol after the preset number Once the appropriate preset has been selected press Recall again at which point you will be asked to confirm the action by pressing Recall for a third time This is to guard against accidental recall of presets Factory Presets are locked so they cannot be over written The user can however store an edited ver sion of a Factory Preset in any free preset location Details of all the Factory Presets including output designations can be found in Appendix A Added Delay in Some KS26 Loudspeaker Presets The loudspeaker presets for running any of the CD series loudspeakers in biamp mode along with a sub woofer have an additional 10 ms of delay built into the preset for all of the outputs subwoofer low fre quency and high frequency This is because the delay settings for the biamp operation of CD series loud speaker are locked and cannot be altered by the end user The delay setting for the subwoofer output is not locked and can be modified If there is a large distance between the subwoofer and the CD series loud speaker this may need to occur
16. ot exist The Hardman type filter is always described by its order as the filter becomes progressively steeper rather than following a linear slope so a dB octave description is not accurate Parametric Equalization Eight sections of equalization are provided two shelving filters and six fully variable parametric sections Page 18 High and Low shelving filters e Knob a Frequency 10 0Hz to 25 6kHz in variable steps e Knob b Slope 6 to 12dB octave in 1dB steps e Knob c Gain 15dB in O 2dB steps The frequency is specified as point where the filter deviates by 3dB from the gain value Parametric filters Knob a Center Frequency 10 0Hz to 25 6kHz in variable steps Knob b Width display selectable or BW Bandwidth BW adjustable from 5 to 5 octaves in variable steps adjustable from 14 2 to O 2 in variable steps Knob c Gain 15dB in O 2dB steps Page 19 Output Channels Gain and Polarity e Knob a Gain adjustable in O 2dB steps from 80 dB to 20 e Knob b Polarity selectable normal or reversed with reference to other outputs Delay e Knob a Adjustable in variable steps from O to 80ms As for input delay velocity sensitive Parameter Knobs provide finer adjustment at low levels and rapid selection of higher values Page 20 High and Low Pass Filters e Knob a Frequency out 20 0Hz to 25 6kHz out e Knob b low pass or high pass fil
17. ront panel controls so they cannot affect the signal path making the unit secure against tampering When in secure mode the indicators still operate normally Note that the commu nications port is still active in secure mode Page 10 EST 1976 Power Inlet The Bag End Kairos DSP series unit should be connected to a suitable mains electricity supply using the cable supplied The processor has a switch mode power supply that is capable of operating with a nominal mains voltage of 85V to 240V 50 60Hz without re configuration Network Expansion Port Where a future network card can be fitted Audio Input Connectors All audio connections are fully balanced and wired pin 1 ground pin 2 hot amp pin 3 cold The two inputs have pin 1 connected directly to the chassis and feed the signal processing chains If an unbalanced source is used a connection should be made between the pin 3 cold signal and the ground connection of the unbal anced source Audio Output Connectors The processed outputs are impedance balanced and wired pin 1 ground pin 2 hot and pin 3 cold An un balanced input may be driven by connecting pin 3 cold signal to the ground connection of the unbalanced destination input Note that output pin 1 s are ground lifted at audio frequencies but connected to ground at RF for good EMC performance The intention being that the amplifiers the processor is driving should be responsible for the grounding
18. s format is intended for symmetrical stereo oper ation eliminating the need to make identical parameter adjustments for each channel The channel pairing is Left and Right Inputs Outputs 1 routed from L input and 4 routed from R input Outputs 2 routed from L input and 5 routed from R input Outputs 3 routed from L input and 6 routed from R input Page 16 DSP Processing Layout Input Channels Gain e Knob a Gain adjustable in O 2dB steps from 80 dB to 20dB Delay e Knob a Delay adjustable in variable steps from O to 400ms The delay parameter is adjustable in fine steps at low values the adjustment becomes progressively coarser as the value increases The velocity sensitive Parameter Knobs therefore provide accurate setting of driver offset delays typically below 10ms and rapid setting of longer system alignment delays Page 17 High Pass Filter e Knob a Frequency out off 20 0Hz to 25 6kHz in variable steps e Knob b high pass filter type System high pass filtering is provided for the input signal This is the preferred location for high pass filtering as it affects all outputs and can therefore improve inter band phase relationships Filter type is selectable from Butterworth Bessel Linkwitz Riley and Hardman Filter slopes of up to 4th order or 24dB octave are provided Not all filter types are available in all slopes For example 18dB octave Linkwitz Riley filters do n
19. se Graphs Besse 6 0 i3 6 2 12 a amp 718 t 3 24 730 36 3 4 100 1 10 1 10 Frequency Hz 12dB Oct 24dB Oct Hardman 6 0 i 6 9 312 a amp 18 t 3 24 30 36 an DN 100 1 103 id Frequency Hz 4th Order 8th Order Page 29 EQ and Filter Response Graphs Magnitude dB Magnitude dB Frequency Hz Low shelf varying Gain High shelf varying Slope Parametric EQ Frequency Hz _ Varying Gain Varying Bandwidth Page 30 EST 1976 Technical Specifications General Inputs 2 Input Impedance gt 10k Ohm Electronically Balanced Maximum Input Level 20dBu 11 0 V Peak Outputs 6 Output Impedance lt 100 Ohm Ground Balanced Maximum Output Level 20dBu into 600ohm load 11 0 V Peak Sample Rate 96kHz Bit Depth 24bit Frequency Response 20Hz to 40Hz filters disabled THD 20Hz to 20kHz filters disabled 0 0196 10dBu 20Hz to 20kHz 3OkHz bandwidth Dynamic Range gt 112dB A weighted 22kHz bandwidth Serial Comms Data gt 110dB unweighted 22kHz bandwidth 115 2kbaud format 8 data 1 stop no parity Processing Gain 20dB to 80dB and mute 0 2dB steps Output Ch Source Input A Input B and SUM HP filter frequency Off 20Hz
20. signal levels The 4 dBu LEDs are intended to show nominal operating level and can also be useful for setting system gain structure Clip LEDs warn the user of input overload and operate at 19 dBu Preset Store and Recall These controls provide access to the 45 presets stored within the device Pressing the store button allows the user to name a preset and choose which memory location it will be held in Pressing store button again completes the process The Recall function operates in a similar way pressing the recall button allows the user to select which preset they require pressing the button for a second time recalls the new DSP settings Note that presets cannot be stored or recalled when Secure mode is activated Channel Select Buttons The currently selected channel is displayed on the top left hand corner of the LCD Pressing the channel but tons scrolls through the available input and output channels and finally through the utility functions and back to the default screen If operating a stereo linked preset the channel name will indicate the channel pairing For example A B means both input A and B parameters The name of the output will be shown briefly at the top of the display when stepping onto an output Edit Select Buttons The currently selected edit parameter page is displayed on the bottom left corner of the LCD Pressing the edit select buttons moves through the available parameters for the current input or outpu
21. t Page 9 EST 1976 Text Display Preset channel parameter and status information is shown on the 2x 24 character text display In most screens the currently selected channel is displayed on the upper line and the edit parameter on the lower line To simplify the display and enhance security some parameters or parameter pages are omitted when not relevant Parameter Knohs Three velocity sensitive parameter knobs are used to adjust parameters shown on the display Up to three parameters at a time are displayed on the screen The parameter name is shown above the parameter value in each of the three screen sections The parameter knobs have a fixed association with the screen sec tions the rightmost parameter knob adjusts the rightmost parameter and so on Output Signal Limiter Indication Two LEDs are provided for each output channel These show the peak signal level relative to the limiter threshold The yellow LED will light when the signal is 6dB below the threshold and the red warning LED will light when the limiter threshold is reached Mute Buttons and Status LEDs Each output has a mute button and associated mute status LED Pressing the button toggles the mute on and off Note that the mute buttons do not function when the Secure mode is activated Secure Button on the rear A momentary button is fitted behind the rear panel between the output XLRs and the RS232 port When activated this will disable all the f
22. t location number is show on the display A Pre set name of up to 12 characters in length can be entered using parameter knobs b and c Pressing the Store Button again completes the process and stores the Preset As with Preset Recall pressing any other button cancels the operation SELECT STORE STORE LOCATION STORE NAME PRESET The user can overwrite non protected Presets only if an attempt is made to save a Preset in a location al ready occupied by a basic or Factory Preset a LOCKED PRESET message is displayed Page 15 EST 1976 DSP Processing Layout Input DSP block diagram 4 Order Low Six Band High HPF Shelf EQ PEQ Shelf EQ Channel B processing is identical to Channel A but for clarity it is not shown Input B Output DSP block diagram 8th Order HPF Routing Stereo Mono Formats 8 Order Low High m There is only one standard layout of the processing blocks but flexible routing and control linking allows this layout to be adapted to a wide variety of applications There are two Formats Mono or Stereo With the Mono format all outputs have unique parameter set tings and all outputs are identical in terms of processing functions and routing capability This is the most flexible Format Stereo format pairs the inputs and outputs for stereo operation the parameters of each member of the pair being identical The routing of inputs to outputs is fixed Thi
23. t response to 4OkHz e Parameter knob and LCD provide a rapid user friendly control interface Page 7 EST 1976 The User Guide This user manual gives a progressively more detailed description of the functions of the DSP series A single page quick reference guide is provided for those users who are experienced with this type of equipment and just need to know how to drive the front panel A detailed explanation of the front and rear panel controls and indicators is contained in the next section The final section describes each individual function or feature with annotated images explaining its use Where appropriate the LCD is shown to further elaborate on the units operation To complete the manual a reference section is included describing the technical performance of the device complete with graphs of filter responses and details of the Factory Presets and their configuration Page 8 EST 1976 Channel Select buttons 2x 24 character Limiter LCD t Store and Indicators Recall buttons CHANNEL KAIROS gt d BH PARAMETER Input Signal Indicators Edit Parameter Output Mute Select buttons buttons Input Signal Indicators A set of three pairs of LEDs indicate signal present 4dBu and input clip for each channel The signal present LEDs operate at approximately 40 dBu giving a useful indication of even relatively low input
24. ter type Filter type is selectable from Butterworth Bessel Linkwitz Riley and Hardman Filter slopes of up to 8th order or 48dB octave are provided Not all filter types are available in all slopes For example 18dB octave Linkwitz Riley filters do not exist The Hardman type filter is always described by its order as the filter becomes progressively steeper rather than following a linear slope so a dB octave description is not accurate Page 21 Parametric Equalization Eight sections of equalization are provided in a similar format to the input channel equalization two shelving filters and six parametric e Knob a Frequency 20 0Hz to 25 6kHz in variable steps e Knob b Slope 6 to 12dB octave in 1dB steps e Knob c Gain 15dB in O 2dB steps The frequency is specified as point where the filter deviates by 3dB from the gain value Knob a Center Frequency 20 0Hz to 25 6kHz in variable steps Knob b Width display selectable or BW Bandwidth BW adjustable from O 1 to 5 octaves in variable steps adjustable from 14 2 to 0 2 in variable steps Knob c Gain 15dB in O 2dB steps Page 22 EST 1976 Limiters The limiters in the KS26 are peak limiters and can be used to help minimize amplifier clipping or to help keep the peak voltage driving a loudspeaker under control The loudspeaker presets in the KS26 have the limiter thresholds set to provide one of these functions based on which
25. ty sensitive so turning a knob rapidly will cause the action to accelerate so the value changes more rapidly Navigation The DSP parameters are organized by channel The currently selected channel is shown in the top left hand corner of the display You can navigate between the channels by pressing the channel buttons Pressing the channel buttons will scroll through the channels utilities and back to the default screen When using a Pre set that is stereo linked the channel selection will reflect this For example 1 amp 4 indicates outputs 1 and 4 When navigating onto an output channel the usage of the output as defined in the Factory Preset will be shown briefly at the top of the screen Page 13 CHANNEL EDIT Pressing the edit navigation buttons gives access to the various pages of parameters available for each channel The currently selected page is shown in the bottom left hand corner of the display this is omitted on some pages where the function is obvious The screen shows up to three normally related parameters for a given part of the processing functions on a given channel The edit buttons allow you to scroll in either direction through the different processing pages for a given Channel When you go past the last page you will be returned to the default page The channel buttons allow you to scroll in either direction through the input and output channels whilst trying to maintain the currently viewed proc
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