Klark Teknik DY11 User's Manual
Contents
1. Applications o Applications The following examples illustrate just a few of the many possible uses of the Square ONE Splitter in a live situation Example 1 FOH and MON split and broadcast out In a live broadcast situation the Square ONE Splitter may be used to split the stage mic line signals at source MON console for example the Midas Siena CT DO From electronically FOH console balanced outputs for example the Midas Verona Square ONE Splitter From transformer isolated output Outside Broadcast Broadcast MIA AAN Keyboard Guitar BLARK TERMIR 16 Square ONE Splitter amp Applications Example 2 FOH and MON split and recorder In this simple live situation the stage mic line feeds are split to serve the FOH live sound console a monitor console and an on site recorder It is recommended that the transformer balanced outputs are used to feed the recorder or recording console especially if the grounding scheme is outside the control of the public address PA operator MON console for example the Midas Siena CT T5 From electronically Wo oa Mic mE bal d output Neuere Midas Verona Square ONE Splitter From transformer isolated output Analogue or digital multi track recorder ALL Keyboard Guitar Square ONE Splitter 17 gt 15 SL ER Applications o Example 3 Pre mixed broadcast2. 48V status of any phantom powered equipment connected to any of the 16 output XLRs on the rear panel If 48V is detected on any of these outputs the unit will apply 48V to any devices connected to their corresponding inputs front or rear panel as soon as the unit is powered up Radio frequency interference Class B device This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help Electric fields Caution In accordance with Pa
3. 5 2U high Width 482 mm 19 Depth 200 mm 7 7 g Weight Net 4 5 kg Shipping 5 7 kg 1 Measurement conditions unit powered all filters bypassed unity gain and output terminated with 20k ohm balanced loads 2 Measurement conditions unit powered both inputs terminated with 150 ohms all filters bypassed unity gain set to OdB and outputs terminated with 20k ohms balanced loads 3 Measurement conditions unit powered all inputs terminated with 150 ohms all filters bypassed outputs terminated with 20k ohms balanced loads 22Hz to 22kHz unweighted Due to a policy of continual improvement Klark Teknik reserves the right to alter the function or specification at any time without notice Square ONE Splitter RGR ERIK Crib sheet UT ACTIVE SPLITTE TXOUTS TXOUT8 OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT PHONES EI o Jac c Oo O a D ao o fa o ao 0 late ES f A 2 m m uc E vac E O soo soo soo O soo O soo O s O sj E 50 B s 5C s0 50 LEVEL vv Eo DEAS DEAS PES n ao ENS va DI 57 s N n Sa 57 a mg of Lio 20 of x of Tao of Yo of I i splitter m v ge ig Nds NA uA BE s nS iu Ee zd cdi Ez POWER Be sev Fiore edP Fare v EA 84V A 40 me et
4. from adjacent signal cables Unlike unbalanced lines which are more susceptible to noise balancing is especially useful when long cable runs are used between pieces of equipment and can also provide other benefits including an increase in line signal level and a decreased possibility of ground loops Balanced connections are typically employed on long cable runs for example to amplifiers or for cables carrying sensitive or low level signals for example mics A balanced line typically employs connectors of the XLR and 1 4 TRS jack plug types The basic principle of balanced interconnection is the cancelling out of any electrical noise by means of a three cable connection to achieve the required signal Two of the cables called hot and cold are used to carry signals and the third is a grounded 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 voltage and the same source impedance but of opposite polarity when they are subtracted any noise voltages caused by interference and noise pick up appearing identically on both cables is cancelled out the difference between them being the resultant signal However in practice the electrical noise on both cables will never be identical and the degree to which it is reduced is measured by the common mode rejection ratio CMRR The electron
5. removal of unwanted high energy low frequency elements in the audio signal 7 Channel number and write on panel 8 48V switch Switches the 48V phantom power supply on off Additionally there is the facility of phantom power sensing provided on all electronic outputs that remotely enables 48V on the splitter mic input XLRs when phantom power is activated from any attached console This is indicated by the illumination of its associated LED 9 Red LED for 48V switch This LED is for 48V switch on off indication but also illuminates when phantom power is detected on either or both of the output XLRs rear panel even when the 48V switch is off F FLORE TERMIK 10 Square ONE Splitter amp Front panel Phones power and media split section 1 LEVEL control knob dB Adjustment of the headphones signal in the range off to 10dB E 2 Headphone jack Standard TRS type 1 4 jack for a connecting headphones enabling you to monitor the solo function 1 3 Blue POWER LED Mains power on off indicator When LED is illuminated mains power is on There is no mains on off switch on the Square ONE Splitter 4 Yellow MEDIA SPLIT LED Illuminates to indicate that 2 media split is in operation This has a duplicate LED on the rear panel see item 5 in Media split and ground lift switches on page 13 Note Headphone output includes 10dB of fixed gain 3 4 MEDIA SPLIT Square ONE Splitter RGR E
6. switch is on In media split mode the input to channel 8 on both the front and rear panels is distributed to all 16 electronically balanced outputs rear panel via its mic preamp which is controlled via the channel 8 GAIN control knob all of the meters will follow the output of channel 8 Note In media split mode the transformer isolated outputs of channels 1 to 7 front panel still have the ability to act as independent isolated feeds if required via the associated secondary fixed gain mic preamps If doing so best practice is to set the unused mic gains to minimum Using the ground lift switches If you are experiencing ground loop problems switch on one or both of the ground lift switches that is OUTPUT A LIFT and OUTPUT B LIFT on the rear panel Each ground lift switch ifts or disconnects globally its respective set of eight outputs OUT A or OUT B on all eight channels The ground lift switches are used to eliminate ground loop problems which are caused by differences in ground potential between items of equipment this creates a voltage difference in the grounds of the equipment and results in a mains frequency hum within the system With a ground lift switch switched on pin 1 of each of its associated output XLRs will still be connected to chassis ground via capacitors This provides an a c path to ground while blocking any d c current flow resulting from a ground loop condition Square ONE Splitter 15 RGR ERNIE
7. B 0 01V I i Stage box passive Outside Local Broadcast Local Ground o Ground lI FOH console I for example the Midas Verona L Independent broadcaster f _ MES vemm There are four fundamental problems inherent in a passive parallel type splitter e Mic signals are typically very low level 40dB with the gain being added at the mixing console Due to the nature of a passive parallel splitter system the cable runs carrying the mic signal end up being quite long increasing their susceptibility to picking up additional noise from other sources for example stray mains cables that may induce hum In turn this additional noise also gets amplified along with the original mic signal e The lengthy mic cable runs also significantly increase capacitance which in turn reduces the high frequency content making the sound dull and uninspiring Also the input impedance of each console added to the system will reduce the overall level e Phantom powered mics are normally supplied via two 6k8 ohm resistors If additional 48V sources are enabled in parallel this increases the current and voltage potentially damaging the mic e The grounding regime is basically one complete ground with no option of isolating various parts of the System This can potentially lead to ground loop problems if parts of the system are powered from different sources For example the PA company may have set the whole system up perfectly using
8. If there are any parts missing incorrect or faulty please contact your local distributor or Klark Teknik at the address at the front of this manual Please retain the original packing in case you should need to return the equipment to the manufacturer or supplier or transport or ship the unit later Checking the mains fuse Before installing the equipment make sure that the mains fuse fitted is of the correct type and rating for your unit To do this refer to Service information on page 28 Installation This unit is designed for mounting in any 19 EIA standard rack and occupies 2U of rack space Four rack mount holes in the front panel are provided for rack mounting and are designed to fully support the weight of the unit in the rack Note Avoid over tightening the rack mount screws as this could damage the front panel The position of the unit will depend upon how it is to be used However when positioning the unit avoid placing it where the control knobs may be damaged by being accidentally knocked or snapped off Avoid mounting the unit directly above or below power amplifiers or power supplies that radiate excessive magnetic fields or heat Ensure that the ventilation apertures on either side of the unit are not blocked or obstructed This unit must be earthed If ground loop problems are encountered the global ground lift switches rear panel for each electronically balanced output may be used It is also permissible to discon
9. Mains supply 13 Operation ocacion a e ee ee e 14 Basic operation 14 Solo bus operation 14 Using headphones 14 Media split mode 15 Using the ground lift switches 15 ABPlications vii RTRT 16 Example 1 FOH and MON split and broadcast out 16 Example 2 FOH and MON split and recorder 17 Example 3 Pre mixed broadcast output 18 Audio signal path sse 19 Square ONE Splitter i KLORE Tan ESC Technical specification Crib sheet 548028 ciar A AAA I More about splitters 0c eee eee nn nn Introduction Passive parallel splitter Isolated splitter Active splitter Balanced audio 6 24 60 dk an aa Service information eee ee ee Routine maintenance Cleaning the unit Checking replacing the mains fuse Introduction sii About the Square ONE Splitter Features Using the main inputs Front panel 5545933 reinen FIXED GAIN ISOLATED OUTPUT C PARALLEL INPUT section ACTIVE SPLITTER section Operation i2 ee aaa 3 939 A eee ee 2 ea ass e Basic operation Applications sisa 2 9 ie a ren Example 1 FOH and MON split and broadcast out Audio signal path Technical specification Cribsheet viaria 323 04793 9302 een ine 515 SD ES i Square ONE Splitter 3 Introduction Introduction Thank you for purchasing a Klark Teknik Square ONE Splitter Your Square ONE Splitter forms
10. RNIE Rear panel The rear panel provides the power and primary I O connections for the Square ONE Splitter Additionally the media split and ground lift switches are adjacent to the channel 8 connectors You will find important information such as warnings and cautions power supply and fuse specifications safety and compliance standards markings etc printed on the left hand side of the panel The correct mains lead for the country to which the unit was shipped is supplied with the unit HLARKTSHIN ICNE Channel I O connections The functions of channels are 1 to 8 in this section are similar although the input of channel 8 is also used for the media split function see Media split and ground lift switches on page 13 Please refer to Connecting the audio cables on page 7 for pin assignments 1 OUT A sockets Fight electronically balanced outputs each with a male XLR chassis connector 2 OUT B sockets Fight electronically balanced outputs 4 1 each with a male XLR chassis connector 3 IN 1 to IN 8 sockets Fight electronically balanced inputs each with a female XLR chassis connector Socket IN 8 is one of the two channel 8 media split inputs the other being 4 2 on the front panel 4 Channel number 3 E ES TESTI 12 Square ONE Splitter Media split and ground lift switches The output lift and media split switches are deliberately recessed to prevent them being inadvertently Switched on or off Each swi
11. an integral part of the Square ONE range which was conceived by Klark Teknik to offer audio professionals a suite of easily accessible high performance audio equipment designed to provide no compromise sonic quality with a feature set that offers all essential facilities and functions It represents the very best of British design and engineering combined with contemporary efficient manufacturing methods and will give you many years of reliable service All this is backed up of course by the standard Klark Teknik three year warranty Please take the time to complete and return the registration card or fill in the Warranty Registration Form online by visiting our website at www ktsquareone com and to obtain the best results with a minimum of effort also read this operator manual Finally enjoy your Klark Teknik Square ONE Splitter About the Square ONE Splitter The Square ONE Splitter is a user friendly high performance eight channel active microphone mic splitter designed for live sound reinforcement Housed in a rugged and compact 2U rack enclosure the Square ONE Splitter offers a cost effective and space effective method of providing up to 24 outputs from 8 sources In addition the Square ONE Splitter can also function as a 1 x 16 media splitter The Square ONE Splitter can distribute up to eight mic or line level signals to multiple locations while maintaining signal integrity and minimising noise interference Its primary app
12. cally balanced outputs e Phantom power sensing for remotely enabling 48V on the inputs when phantom power is activated from any attached console Male output and female input XLRs with gold plated connectors e Power LED for on off indication e Mains supplied via an IEC socket on rear panel e Fuse drawer contains easily replaceable mains fuse and a compartment for a spare 1 The mic input of the Square ONE Splitter is based around the same circuitry as used in the DL431 Mic Splitter which is part of the Midas XL8 Live Performance System and features exceptionally low noise and distortion combined with generous headroom The Midas XL8 Live Performance System has been specifically designed for live use and has at its core the XL8 Control Centre which is a user friendly state of the art high performance digital console Square ONE Splitter 3 E EE ER TERMO Introduction o How to use the Square ONE Splitter This section shows you how to get the most out of your Square ONE Splitter Using the main inputs To maximise the sonic benefits of active splitting the Square ONE Splitter should be located close to the mic sources and connected to them as directly as is practical In this way the unit can provide active drive to all the distributing cable systems This massively reduces capacitive and resistive loading on the mic as compared to other non active splitting systems so that it captures the sound faithfully without
13. d their susceptibility to picking up additional noise from other sources which is ultimately amplified at the mixing console When using a 1 1 1 1 ratio transformer the loading on the mic and the extra capacitance remains resulting in high frequency loss Also the input impedance of each console added to the system will reduce the overall level There are 3 1 1 1 ratio step down transformers available that compensate for the high frequency loss by lowering the gain Phantom power 48V will also need to be provided for the mics which may entail connecting one of the consoles in a passive parallel splitter type configuration or adding a separate supply Square ONE Splitter 25 KLORE ERNIE More about splitters o Active splitter An active splitter uses active electronic circuitry to address the problems inherent in passive parallel and transformer isolated splitter systems PA company responsibility Safe audio signals Sensitive audio signals MON console I I I Local for example the I L Ground Midas Siena r 10dB 0 30V I I Outside Stage box active Broadcast O Ground in Grounds ee FOH console I I oca for example the I l Ground Midas Verona L Independent broadcaster _ _ en ug oe ii eo l An adjustable gain stage is added at the front end of the split allowing the user to add a pre determined amount of gain to the low level mic signal earl
14. e square al Application FN ELORE TEN 22 Square ONE Splitter amp More about splitters More about splitters This section is intended to provide some useful background information on mic splitters Introduction In its very basic form a splitter accepts mic line signals and splits each signal for distribution to a number of different processing devices However more advanced solutions are required to cope with factors within a sound system that cause signal degradation and produce external noise and radio frequency RF interference These factors include the number of splits required and the length of cable runs and also the inherent problems imposed by the low level of the mic signal and multiple grounding The types of splitter and how they are designed to overcome these problems are discussed in further detail in the following subsections Square ONE Splitter 23 RGR ERNIE More about splitters o Passive parallel splitter The passive parallel splitter has basically all of the split points wired in parallel offering no ground isolation or any gain stage whatsoever Passive parallel splitters are popular at the lower end of the market as they provide a very cost effective solution as compared with a transformer isolated splitter or an active splitter PA company responsibility 40dB 0 01V MON console for example the Midas Siena I I I A 40dB 0 01V I X r 40d
15. en cleaning the unit take great care not to damage control knobs pushbuttons etc Checking replacing the mains fuse The equipment must be independently isolated from the mains voltage supply before any attempt is made to change or check the protective fuse The fuse must always be replaced and its drawer closed before the equipment is reconnected to the mains voltage supply Only use the correct replacement type when changing the fuse Fuse specification is printed on the rear cover To remove the mains fuse fully open the fuse drawer and prise out the fuse from the mains fuse compartment see Mains supply on page 13 A small flat bladed screwdriver may be useful for this procedure Check that the fuse is ok Insert new or existing fuse in the mains fuse compartment If necessary fit a new spare fuse Close drawer After replacing a fuse check that the unit is working properly RLARE TERMIR 28 Square ONE Splitter amp Service information Square ONE Splitter 29 RARE TE Service information o BLORE TERNIRK 30 Square ONE Splitter ga Cron IT Midas Klark Teknik Limited 4 L E H ERIK Klark Industrial Park Walter Nash Road Y l l I Kidderminster Worcestershire DY11 7HJ England SIGNAL PROCESSING BY DEFINITION Tel 44 1562 741515 Fax 44 1562 745371 Email info midasklarkteknik com Website www ktsquareone com 2010 Red Chip Company Ltd
16. filled with liquids such as vases are placed on the equipment 17 The mains plug of the power supply cord shall remain readily operable 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 Square ONE Splitter Microphone Splitter 115V AC 400mA 50 60Hz 230V AC 200mA is in conformity with the regulations of the following marked EC directive s and bears the C mark accordingly Reference Number Title 2004 108 EC EMC Directive EMC 2006 95 EC Low Voltage Directive LVD The conformity of the product with EC Directives for use in environments E1 E2 E3 and E4 is provided by the compliance with the following standards Standards date Reference Number Title EN50081 1 Generic Standard Using EN55103 Limits and Methods EN55103 Class B Conducted Emissions PAVI EN55103 Class B Radiated Emissions PAVI EN61000 3 3 2000 Voltage Fluctuation and Flicker EN61000 3 2 1995 Harmonic Current Emissions EN60065 2002 Electrical Safety Place date Kidderminster UK 15th April 2010 General Manager AVP Product Development Printed name John Oakley Printed name Alex Cooper RLARR vasi PRECAUTIONS This equipment is sup
17. high frequency losses or the introduction of unwanted electrical interference This improvement in sound quality is normally very noticeable The Square ONE Splitter can also receive higher signal levels such as those produced by some condenser mics or even line level signals In the case of unbalanced line level signals it may be advisable to utilise a DI box in advance of the splitter to eliminate any possibility of ground induced noise However with balanced line signals the only precaution likely to be required is a break in the XLR pin one connection at the input to the splitter Using the outputs The primary application for the Square ONE Splitter is in concert sound public address systems where it provides output feeds for FOH and MON consoles It utilises an active preamp in order to maximise the signal to noise ratio and headroom before driving the long cable runs that are typically associated with such systems In this application the grounding regime is normally planned and controlled by the sound contractor such that isolating transformers are not required The Square ONE Splitter can assist in the elimination of ground loops within the system if required by utilising the integral LIFT switches that can disconnect the XLR pin one terminal on one both or neither output sets OUT A or OUT B as required As a secondary function the Square ONE Splitter also provides a transformer isolated output for every channel This is intended f
18. ically balanced input and output connections of the Square ONE Splitter 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 As a specification CMR is usually stated as a dB ratio called CMRR at a given frequency Note On balanced circuits the hot signal is also known as ve and in phase while the cold signal is also known as ve and out of phase Square ONE Splitter 27 RGR ERNIE Service information o Service information To help maintain your Square ONE Splitter unit in good working order and to make sure it gives you optimum performance we recommend that you carry out the following procedures Contact your local distributor if you require any further service information Routine maintenance About once every month Clean the unit as detailed in Cleaning the unit on page 28 e Check controls for freedom of operation this operation may also help to prevent them from sticking e Check functionality of all controls that is pushbuttons LEDs etc e Check functionality of equipment Cleaning the unit Switch off the unit and electrically isolate it from the mains before cleaning Clean the unit using a dry lint free cloth Do not use harsh abrasives or solvents Wh
19. ier The gain control knob is used for optimising the preamp gain Standard 48V phantom powering is individually switchable on each channel and has remote operation by virtue of its unique phantom voltage sensing feature Additional controls include a headphone level control just above a headphone jack a global ground lift switch per set of electronically balanced outputs and a media split switch The media split switch activates media split mode in which the output of channel 8 is distributed to all 16 electronically balanced outputs Square ONE Splitter 1 BLARK TEKI Introduction All audio connections are on balanced XLRs wired pin 2 hot featuring gold plated connectors The mic inputs and transformer balanced outputs are mounted on the front panel for easy access and the two electronically balanced outputs are on the rear panel along with the duplicate set of inputs An integral switch mode power supply automatically adapts to mains voltages in the range 100 to 240 volts 50 to 60Hz An LED on the front panel indicates when power is applied to the unit there is no mains power on off switch Analogue or digital multi track recorder Broadcast FOH console for example the Midas Verona Outside Broadcast MON console for example the Midas Siena Mobile Recording Studio Electronically balanced output Transformer balanced output Electronically balanced
20. in 2 hot Operating level OdB Maximum level 22dBu Output impedance lt 50 ohms Signal drive capacity lt 600 ohms 8 front panel Type Analogue transformer isolated balanced male XLRs Pin 2 hot Operating level 6dB Maximum level 22dBu Output impedance lt 75 ohms Signal drive capacity lt 600 ohms Headphone 1 output Type Analogue TRS jack socket Rating 750mW nominal 50 ohm load Terminations Audio Front panel connectors Channel input eight x AA series female XLRs labelled IN 1 to IN 8 Isolated output C eight x AA series male XLRs labelled TX OUT 1 to TX OUT 8 Headphone output one 1 4 TRS balanced jack socket Rear panel connectors Channel input eight x AA series female XLRs labelled IN 1 to IN 8 Electronic output A eight x AA series male XLRs labelled OUT A Electronic output B eight x AA series male XLRs labelled OUT B Power 3 pin IEC Performance Frequency response 0 5dB input to output 20Hz to 20kHz Distortion 0 0296 1kHz OdBu at unity gain Dynamic range Electronically balanced outputs gt 122dB Transformer isolated outputs gt 140dB Noise floor Unity gain lt 100dBu Mic EIN 40dB gain lt 128dBu High pass Filter frequency 3dB 30Hz filter Filter slope 12dB per octave Power Voltage 100VAC to 240VAC 10 Requirements Frequency 50Hz to 60Hz Consumption 35W BLARK TERMIR 20 Square ONE Splitter Technical specification Dimensions Height 88 mm 3
21. lication is to split the audio signals on stage into individual feeds for front of house FOH monitoring MON multi track recording live broadcasting or indeed any other requirement see Figure 1 Typical channel I O connection options on page 2 Although the Square ONE Splitter is a cost effective unit its signal integrity and audio performance mean it can be used with any console and the quality of its preamp and circuitry can enhance the audio performance of lower cost consoles The Square ONE Splitter has eight channels each consisting of two parallel inputs two preamps and a total of three balanced outputs Two of the outputs identical are electronically balanced while the other is transformer isolated Both paralleled mic inputs feed two integral superbly specified mic preamps which are based on the circuitry used in the DL431 Mic Splitter part of the acclaimed Midas XL8 Live Performance System One preamp provides adjustable gain and drives the two electronically balanced outputs at increased levels up to line level while the second provides a fixed gain copy of the input and drives the transformer isolated output Channel controls consist of solo filter and phantom voltage pushbutton switches each with an adjacent LED for on off indication a gain control knob and a dedicated peak reading meter for displaying the output at all times The solo system allows any channel s to be monitored via the integral headphone amplif
22. ly and unplug the power from the a c outlet Then have the equipment inspected by the manufacturer s qualified service personnel Installation Before installing and connecting up the equipment check that both the mains supply and the quality of earthing are adequate for the equipment Also check that the mains power supply voltage rating corresponds with the local mains power supply and that the mains fuse is of the correct type and rating Unless advised otherwise optional equipment must only be installed by service personnel and in accordance with the appropriate assembly and usage regulations Location Ideally a cool well ventilated area is preferred away from power distribution equipment or other potential sources of interference Do not install this equipment in a location subjected to excessive heat dust or mechanical vibration and keep the equipment out of direct sunlight Where necessary use fan cooled racks This unit is only intended for rack mounting Audio connections To ensure the correct and reliable operation of your Square ONE Splitter 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 PRECAUTIONS Phantom power Never apply phantom power to any unbalanced input source Before powering the unit always check the
23. ment Balanced device Ground Pin 1 Screen Ground Male XLR ve 2 chassis Pin 2 Hot signal connector 92 ve Pin 3 Cold signal square O n e Ground i Pin 1 splitter in 1 Screen Ground ve E z Female XLR Pin 3 Cold signal chassis connector ve Pin 2 Hot signal Figure 2 I O connections to balanced devices Square ONE Splitter 7 Getting started o Connecting to unbalanced equipment Important We recommend that you only connect balanced devices to your Square ONE Splitter However if you do have to connect unbalanced devices we recommend that you use the Klark Teknik DN100 DI box to balance the signal first Ideally you will be making the best use of the low noise high headroom balanced inputs of the Square ONE Splitter by connecting to similarly balanced equipment However if you do have to connect to unbalanced devices the following wiring is recommended for best results Unbalanced device Ground Pin 1 Screen Ground not connected at balanced end if ground loops are generated Male XLR ve chassis Pin 2 Hot signal B 2 ve connector Pin 3 Ground at unbalanced end square one splitter Ground Pin 1 Screen Ground not connected at balanced end if ground loops are generated Pin 3 Ground at unbalanced end Female XLR chassis connector ve A Pin 2 Hot signal Figure 3 I O connections to unbalanced devices Powering the unit Swi
24. nect the cable screen at one end or other of the output cables though the signal input cable screen must be connected at both ends to ensure the phantom powering operates correctly For unbalanced use pin 3 of any output XLR may be grounded at the destination end of the cable The source impedance of the electronically balanced outputs is 50 ohms while the transformer balanced outputs have a source impedance of 75 ohms Both are designed to feed a minimum load of 600 ohms NUERA TESI 6 Square ONE Splitter amp Getting started Connecting the power cable Making sure that the mains power at the power outlet is off connect the mains cable supplied with your Square ONE Splitter to the mains power outlet and then to the mains socket at the rear of your unit Connecting the audio cables Making sure that all equipment is switched off connect your Square ONE Splitter to the rest of your audio equipment as shown in the following subsections The mic preamp gain may be adjusted using the GAIN control knob the gain range being adequate to accommodate most mics keyboards DI boxes backline preamp outputs and active guitar basses However passive guitars require a high impedance load and should be connected via a suitable active DI box such as the Klark Teknik DN100 Channel I O pin outs The following diagram shows the pin outs for both the male and female chassis connectors on the Square ONE Splitter when connecting to balanced equip
25. of BLARK MERKMIK 4 Square ONE Splitter amp Introduction Using the parallel inputs Typically the mic signals from different stage locations are fed to the splitting systems using multi channel stage boxes and cables This infrastructure is normally subjected to tremendous stresses during the show and during set up breakdown and it is not unusual to develop intermittent faults on some individual signal lines If this occurs there is normally little time available to de bug the problem fully before the show However the Square ONE Splitter provides a solution for such circumstances by providing an additional parallel input on the front panel of the unit for emergency connection of a spare mic or individual replacement cable These inputs can also be used for single mic locations eliminating the requirement to utilise an 8 way stage box and multi core cable for just one mic Square ONE Splitter 5 RGR ERNIE Getting started Observing the guidelines in the IMPORTANT SAFETY INSTRUCTIONS and PRECAUTIONS sections towards the front of the manual carry out the following to get your Square ONE Splitter unit fully operational Unpacking Carefully unpack your Square ONE Splitter equipment package Inspect the Square ONE Splitter unit carefully for any signs of damage that may have occurred during transit and notify the courier immediately if any is discovered Check the contents of your Square ONE Splitter equipment package
26. one grounding regime an independent broadcaster then arrives and has to use a portable generator adding another grounding source D ELORE TENNIS 24 Square ONE Splitter amp More about splitters Isolated splitter An isolated splitter typically uses a 1 1 1 1 ratio transformer to achieve the audio isolation The mic input signal is connected to the primary winding of the transformer with all of the split points derived from the secondary windings Additional ground lift switches may be added to each of the split points providing the option to fully isolate individual parts of the system if required PA company responsibility ee O E E a Sensitive audio signals 40dB 0 01V MON console Local for example the Ground Midas Siena 40dB 0 01V 40dB 0 01V Stage box isolated Outside Broadcast Local Ground S I Grounds FOH console I dra for example the roun Mid Vi Independent broadcaster L idas verona Isolated systems are the next step up from a passive system and offer a big increase in performance although this comes at a price To get the best out of an isolated system a very high quality transformer is required which is expensive Although the isolated splitter addresses one of the fundamental problems inherent in passive systems by providing isolation it doesn t solve the problem of sensitive low level mic signals being carried over long distances an
27. or varied and occasional use as the needs arise in the event that an additional split is required typically this is for a broadcast feed or recording These situations cannot always be planned for and are normally outside the sound contractor s control In these instances transformer isolation is desirable to eliminate any ground interference that the additional connection could otherwise bring to the whole system The XLR pin one terminals are not connected on these outputs Traditionally active splitters have provided transformer splits driven from the same preamp that drives the main system outputs FOH and monitor but the Square ONE Splitter utilises separate fixed gain preamps to buffer the transformer feeds They operate at a nominal gain of 6dB to cope with potentially large low frequency line level input signals without saturating the transformers This provides an additional benefit that is very popular with broadcasters It means that when they are using this output they have total control of the gain and headroom of their part of the system just as if it had been from a passive split but without the risk of ground induced noise interference With older designs that provide a transformer feed after the main preamp the level fed to the broadcaster can change without warning whenever the concert sound crew decide to adjust their levels The dynamic range of the transformer outputs is greater than 140dB something broadcasters will also approve
28. output AEN Keyboar Guitar Parallel inputs lorl Bebe gt bee gt ll TX OUT 1 Front panel Rear panel Figure 1 Typical channel I O connection options NR TESI 2 Square ONE Splitter amp Introduction Features The Square ONE Splitter has eight channels each with e Two mic preamps based on those used in the acclaimed Midas XL8 Live Performance System one drives the two electronically balanced outputs and the other drives the transformer isolated output e Two paralleled inputs one front and one rear e Two electronically balanced outputs rear panel derived from the front control knob adjusted mic preamp e One transformer isolated output front panel derived from a second fixed gain preamp Each channel is clearly labelled and includes the following controls e Rotary gain switch with nine positions Range is from OdB to 40dB in 5dB steps e 48V phantom power switch with adjacent LED for on off indication e 30Hz high pass filter switch with adjacent LED for on off indication e Solo switch with adjacent LED for on off indication e Output meter with four LEDs which indicate 15dB OdB 12dB and 21dB Additional features include e Headphone output 1 4 jack and level control to monitor the solo bus Two global ground lift switches one for each set of electronically balanced outputs e Media split switch for routing channel 8 to all 16 electroni
29. output In this live broadcast application the Square ONE Splitter provides isolated feeds from the group outputs of the FOH live sound console Square ONE Splitter m m m m m m m m To input e 09 02 02 09 A 9 4 4 UU UU UO LIL CHE d o o o le D FOH console for example the C T gt From transformer Midas Verona isolated output Outside Broadcast o Broadcast Y PA Keyboard Guitar Square ONE Splitter RARE TESI 7 Audio signal path Audio signal path o solo Note As channels 1 to 7 are identical e o this diagram only shows the audio B ET o Bar signal path for channels 1 and 8 E CN 9 10 i s an 20 GAN oe 9 E i 9 OUTA o o 9 i e oem 9 el A e Gnd Media Split switches outputs 1 7 i ai one PHONES MEDIA splitter pl ES o y So o sd PHONES m s E 10 A 20 i 3 IN 8 MEDIA SPLIT Evi E i i e GUIA 9 _ E 9 OUT B x T UR N8 o E Square ONE Splitter 19 Technical specification Technical specification Inputs 8 mic line Type Analogue electronically balanced female XLRs Pin 2 hot Maximum input level 22dBu Input impedance 5k ohms Common mode rejection 80dB at 1kHz typical unity gain OdB ratio CMRR 100dB at 1kHz typical maximum gain 40dB Outputs 16 rear panel Type Analogue electronically balanced male XLRs P
30. plied by a mains voltage that can cause electric shock injury The following special limitations must be observed in order to maintain safety and electromagnetic compatibility performance Power The internal power supply is a switch mode type that automatically senses the incoming mains voltage and will work where the nominal voltage is in the range 100V a c to 240V a c A single fused IEC mains inlet is provided on the rear panel The correct lead for connection in the area to which the unit was shipped is supplied with the unit The equipment should only be plugged into the mains outlet using the supplied lead When removing the equipment s electric plug from an outlet always hold the plug itself and not the cable as pulling out the plug by the cable can damage it and never insert or remove an electric plug with wet hands Grounding In the event of ground loop problems use the earth LIFT switches provided on both sets of outputs rear panel If you have ground loop problems relating to the inputs use a DI box for example Klark Teknik s DN100 to provide isolation Handling the equipment Before moving the equipment disconnect it from the mains and when lifting or moving it always take its size and weight into consideration 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 immediate
31. quare ONE Splitter 13 BLARK TEKMI Operation Basic operation Caution Never apply phantom power to any unbalanced input source Before powering the unit always check the 48V status of any phantom powered equipment connected to any of the 16 output XLRs on the rear panel If 48V is detected on any of these outputs the unit will apply 48V to any devices connected to their corresponding inputs front or rear panel as soon as the unit is powered up Connect all condenser mics and active DI boxes to the Square ONE Splitter before applying phantom power Ensure that the sound system level is turned down at this stage to prevent switch on thumps or acoustic feedback The phantom power should be switched off for any channel being used with a dynamic mic or passive DI box although there shouldn t be any problems if the phantom power is inadvertently left switched on provided the sources are wired for balanced operation and connected using conventionally wired balanced cables Use the solo facility to check the level of each input individually and set the gain to achieve the highest possible signal level without clipping that is without the red LED of the OUTPUT meter illuminating Leave sufficient headroom to allow for unplanned increases in level during performance Both the transformer isolated and electronically balanced outputs offer exceptional audio quality combined with excellent line driving capability However the transformer o
32. rized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades 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 outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the product 11 Only use attachments accessories specified by the manufacturer 12 Unplug this apparatus during lightning storms or when unused for long periods of time 13 Refer all servicing to qualified personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 14 Use the mains plug to disconnect the apparatus from the mains 15 Warning To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture 16 Do not expose this equipment to dripping or splashing and ensure that no objects
33. rt 15 of the FCC Rules amp Regulations changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment Should this product be 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 corresponding to the modulation signal may be experienced under extreme conditions 3V m 90 modulation Operation Never remove for example covers housings or any other safety guards Never operate the equipment with the covers removed or if safety guards are ineffective or their effectiveness has been reduced O Contents Introduction ce sri sipar rs dara 1 About the Square ONE Splitter 1 Features 3 How to use the Square ONE Splitter 4 Using the main inputs 4 Using the outputs 4 Using the parallel inputs 5 Getting started su ass a ee ee en nun 6 Unpacking 6 Checking the mains fuse 6 Installation 6 Connecting the power cable 7 Connecting the audio cables 7 Channel I O pin outs 7 Connecting to unbalanced equipment 8 Powering the unit 8 Frontip nel aiii aida a ca a 9 FIXED GAIN ISOLATED OUTPUT C PARALLEL INPUT section 9 ACTIVE SPLITTER section 10 Phones power and media split section 11 Rear panel i35u53 3x43 33 333 353 3 a a aa 12 Channel I O connections 12 Media split and ground lift switches 13
34. square one splitter operator aalo lalio KLARA MERI square one splitter OPERATOR MANUAL 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 Square ONE Splitter Operator Manual DOCO02 SQ1SPLITTER Issue C April 2010 Red Chip Company Ltd In line with the company s policy of continual improvement specifications and function may be subject to change without notice This Operator Manual was correct at the time of writing E amp OE RLAR WERT IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated Dangerous Voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with a dry cloth no ur WN PR Do not block any of the ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety purpose of the pola
35. tch has an LED above for on off indication where illuminated LED switch is on and extinguished LED switch is off 1 Red LED for OUTPUT A LIFT switch 2 OUTPUT A LIFT switch Recessed switch for globally disconnecting the internal ground from the OUT A output connector on all eight channels 3 Red LED for OUTPUT B LIFT switch 4 OUTPUT B LIFT switch Recessed switch for globally disconnecting the internal ground from the OUT B output connector on all eight channels 5 Yellow LED for MEDIA SPLIT switch This LED is duplicated on the front panel see ACTIVE SPLITTER section on page 10 6 MEDIA SPLIT switch Recessed switch for switching the unit to media split mode see Media split mode on page 15 for details of operation Mains supply 1 IEC socket Auto voltage sensing switch mode z power supply that operates where the nominal mains 1118 NERI voltage is in the range 100V a c to 240V a c pee 2 Fuse drawer Contains the mains fuse at the rear of a two compartment drawer The front compartment contains a spare fuse Always replace the mains fuse and spare with the same type and rating see Checking replacing the mains fuse on page 28 for details HE T OF FUSE LI s 3 Supply voltage and fuse specifications Details of the supply voltage and the mains fuse are 12 3 4 printed here a Fuse warning information Details on replacing the mains fuse with the same type is printed here S
36. tch the power on at the mains power outlet The Square ONE Splitter does not have a mains power on off switch Your unit is now ready to operate BLORE TERNIRK 8 Square ONE Splitter amp Front panel Front panel The front panel of the Square ONE Splitter is divided into three main sections as follows FIXED GAIN ISOLATED OUTPUT C PARALLEL INPUT ACTIVE SPLITTER I x ET EN XT DE SEI TKOUT3 TX Our 4 SE IX OUI STE IXOU eum TT XI ET E IN Ng B na DE Es 1 FIXED GAIN ISOLATED OUTPUT C PARALLEL INPUT Eight channel section containing the paralleled inputs and transformer isolated balanced outputs see FIXED GAIN ISOLATED OUTPUT C PARALLEL INPUT section on page 9 2 ACTIVE SPLITTER Eight channel section containing the channel controls see ACTIVE SPLITTER section on page 10 3 Phones power and media split see Phones power and media split section on page 11 4 Four cut outs for rack mounting FIXED GAIN ISOLATED OUTPUT C PARALLEL INPUT section The functions of channels 1 to 8 in this section are similar although the input of channel 8 is also used for the media split function TX OUT 1 1 TX OUT 1 to TX OUT 8 sockets Eight transformer isolated balanced outputs each with a male XLR chassis connector 2 IN 1 to IN 8 sockets Fight electronically balanced inputs each with a female XLR chassis connector Socket IN 8 is one of the two channel 8 media split inp
37. utputs may be preferred in situations where absolute electrical isolation must be maintained such as running feeds to mobile studios or outside broadcast facilities The fixed gain of the transformer outputs will also be preferable for broadcast trucks because they can have totally independent control of their system gain headroom etc In theory the electronically balanced outputs remove any opportunity for the audio transformers to colour the sound However in practice the sonic quality of the two types of output is very similar Solo bus operation At the required channel press the SOLO switch to switch solo on for that channel its yellow LED just above will illuminate to show that solo is switched on Soloing a channel switches its signal onto the internal solo bus which allows it to be monitored in isolation via the headphone socket on the front of the unit You can solo more than one channel at a time Using headphones To hear any soloed channel s over the headphones plug them into the PHONES socket at the right hand side of the front panel The socket is a standard 1 4 TRS jack which will accept any set of conventionally wired stereo headphones Adjust the volume using the LEVEL control knob ELORE TERMO 14 Square ONE Splitter Media split mode To switch the unit to media split mode press the recessed MEDIA SPLIT switch on the rear panel its yellow LED and also the one on the front panel will illuminate to show that the
38. uts the other being on the rear panel 3 Channel number and write on panel Square ONE Splitter 9 Front panel o ACTIVE SPLITTER section All of the switches in this section are of the two position latching pushbutton type Each switch unless otherwise stated has an adjacent LED for on off indication where illuminated LED switch is on and extinguished LED switch is off 1 OUTPUT level meter dBu Dedicated peak 1 reading four segment audio level LED meter that follows the output level at all times no matter how the controls are set The segments are 15dBu green OdBu green 12dBu yellow and 21dBu red Illumination of the red LED indicates the signal is being clipped 2 Yellow LED for SOLO switch 2 3 SOLO switch Switches solo on off With solo on 3 post mic amp gain audio is sent to the PHONES output allowing you to listen to and monitor the audio content locally 4 GAIN control knob Nine way control knob adjusts the amount of mic gain added to the input signal before it 4 is sent to the electronically balanced outputs Range is from OdB to 40dB in 5dB steps Note The transformer isolated outputs are derived before the mic amp gain stage and are buffered and driven at 5 6dB operating gain with no user adjustment available 8 6 D Yellow LED for 30Hz switch 6 30Hz switch Switches the 30Hz high pass filter 7 on off Operating at 30Hz the filter acts as an anti rumble filter which aids the
39. w e C 2 S S Location Date square tels Application IN ISOLATED OUTPUT PARALLEL INPI CTIVE SPLITTER TXOUT3 TXOUT4 TXOUTS TXOUT7 TXOUT8 OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT PHONES O fai 10 ao E a E a Y lau MC mC mC 20 20 20 E CS soo 7 soo soo SV saw so C soo 7 som 50 50 50 50 50 50 LEVEL Pom Es Es Es do as s as s ms as sy Nas m x4 he ae Ne Vas v a A splitter POWER ES ES oi 2 nn 0 Ex 25 Bs Es I ES re 48V ARA Ae AR AR aoe AR oe Location Date square leal Application STIVE SPLITTER TX OUT 5 OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT OUTPUT PHONES a a 420 420 10 1 O aO 221 do 50 C C sc 50 s0 sc LEVEL ES SI EL n 20 TR mx ES 195 a m lo m ea RG Es ES POWER splitter sv Fire v Fame 48V Fore 48v om 48v ZA Xu 48V Fore 4 Location Dat
40. y in the system signal path This is then buffered electronically balanced and driven anywhere up to or at line level making the signal relatively safe from external interference before being sent on to the attached mixing consoles This approach reduces the length of sensitive mic cables to a bare minimum which dramatically improves audio performance by reducing cable losses and additional noise and also keeps the mic loading normal resulting in a far brighter and more accurate sound Ground lift switches are provided on the electronic outputs to enable isolation if required In addition a transformer isolated output normally derived as a copy of the post preamp signal but on the Square ONE Splitter is tapped off before the gain stage is buffered and driven making it relatively safe from external interference This would typically be used for broadcasters who prefer to add their own gain and may also be running their system from a different power source Other useful features usually included with an active splitter and especially on the Square ONE Splitter are local metering 48V phantom power and a solo system with headphone output to allow local monitoring aN BLORE TERNIRK 26 Square ONE Splitter Balanced audio Balancing refers to the type of input or output signal connections in an audio system These connections are specifically designed to reject external noise for example from mains wiring and internal interference
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