QSC KW122
Contents
1. Common Stereo System 24 Dimensions 15 4 391 mm 3 Ld D 662 mm d 8 8 J 8 5 e C9 3 T I 1 KW122 Dimensions 445 mm 152 386 mm 8 8 I 321 e 816 mm KW152 Dimensions 25 MN lel JI d e um 427 mm 18 5 469 mm 43 1 1096 mm 9 mm mee O 9 ome g 23 4 595 mm e 9 9 9 1 201 510 mm 9 9 o e 26 KW153 Dimensions 29 761 KW181 Dimensions KW181 18 subwoofer 18 cone transducer 40 Hz 112 kHz 37 Hz 129 Hz 155 dB peak 1000 W Class D continuous XLR 1 4 38k balanced 19k unbalanced Power Gain LF Mode Normal DEEP Polarity Normal Reverse Front LED On Off Limit Power Signal Standby Limit Dual balanced female XLR 4 line level input Dual Balanced male XLR full range line level out Remote gain control L2. 5 Channel A Mic Line Gain 0 04 6 Channel A Signal Present Indicator pene L poi Green LED Z 7 Channel B Signal Present Indicator Green LED 8 9 8 Channel A Gain OFF 6 10dB 9 Channel B Gain GAIN A 11 Channel A Channel A accepts either microphone or line level inputs The MIC LINE IN A inputs can use either a Male XLR connector or a Male 1 4 phone jack TS or TRS type The KW122 KW152 and KW153 feature a 4 position rotary switch MIC LINE GAIN to provide input gain flexibility e 0 dB Regular line level no additional gain e 12 dB Pre amp is engaged primarily for low line levels that need extra gain 24 dB Pre amp is engaged and MIC LED illuminates For direct microphone use e 36 dB Pre amp is engaged and MIC LED illuminates For microphones with lower output levels that need extra gain The Mic settings 24 and 36 dB should only be used if a microphone is connected directly to the MIC LINE IN A Using the Mic settings for other purposes may introduce distortion It is recommended that you move the GAIN A knob to the OFF position or power down the loudspeaker before changing the MIC LINE GAIN switch If you change the switch while audio is being processed there will be very noticeable changes in the output level The gain for signal delivered on Channel A is set using the GAIN A knob This control sets the sensitivity of Channel A as well as the amount of signal sent to the power amp
3. accessible in case of emergency disconnect requirement 12 CAUTION Use only attachments accessories specified by QSC Audio Products LLC 13 CAUTION Use only with hardware brackets stands and components sold with the loudspeaker or by OSC Audio Products LLC 14 CAUTION Unplug the loudspeaker during lightning storms or when unused for long periods of time 15 CAUTION Refer all servicing to qualified service personnel Servicing is required when the loudspeaker 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 loudspeaker the loudspeaker has been exposed to rain or moisture does not operate normally or has been dropped 16 WARNING Before placing installing rigging or suspending any speaker product inspect all hardware suspension cabinets transducers brackets and associated equipment for damage Any missing corroded deformed or non load rated component could significantly reduce the strength of the installation or placement Any such condition severely reduces the safety of the installation and should be immediately corrected Use only hardware which is rated for the loading conditions of the installation and any possible short term unexpected overloading Never exceed the rating of the hardware or equipment 17 WARNING Consult a licensed professional engineer regarding physical equipment installation Ensure that all local state and national re
4. full range line level out Balanced male XLR mix out Stereo RCA line level input Remote gain control e Locking IEC power connector On demand 50 mm variable speed fan Thermal limiting Output overcurrent Overtemperature muting GuardRail 43 1 x 18 5 x 16 8 1094 mm x 470 mm x 427 mm 87 lb 29 5 kg KW153 COVER KW M10 KIT Thermal limiting Excursion limiting Universal power supply 100 240 VAC 50 60 Hz 100 VAC 2 3 A 120 VAC 2 01 A 230 VAC 1 13 A 32 1 x 25 x 15 2 816 mm x 445 mm x 586 mm 62 Ib 28 kg KW152 COVER KW M10 KIT 27 15 mm painted birch plywood Black textured paint Black powder coated 16 gauge steel 26 x 15 x 15 4 660 mm x 381 mm x 391 mm 49 Ib 22 2 kg KW SUS KIT 122 e KW122 COVER KW M10 KIT Configuration Transducers Low frequency Mid frequency High frequency Frequency Response 6 dB Frequency Range 10 dB Nominal Coverage 6 dB Maximum SPL 1 meter Amplifiers Power Output Input Impedance 0 Controls Indicators Connectors Cooling Amplifier Protection Transducer Protection AC Power Input AC Power Consumption 1 8 Power Enclosure Finish Grille Dimensions HWD Weight Net Available Accessories Specifications subject to change without notice OSC Mailing Address QSC Audio Products LLC 1675 MacArthur Boulevard Costa Mesa CA 92626 1468 USA Telephone Number
5. the bottom of the KW122 and the top of the KW181 shall not exceed 43 1092 mm Use proper lifting techniques and safety precautions when mounting on a loudspeaker pole The KW122 weighs 49 Ibs 22 2 kg KW152 WARNING Do not use a loudspeaker support pole longer than 36 914 mm when the KW152 is supported by the KW181 subwoofer The maximum distance between the bottom of the KW152 and the top of the KW181 shall not exceed 33 838 mm Use proper lifting techniques and safety precautions when mounting on a loudspeaker pole The KW152 weighs 64 Ibs 29 0 kg KW181 subwoofer The maximum distance between the bottom of the KW153 and the top of the KW181 shall not exceed 33 883 mm When supported by a stand alone speaker stand the maximum distance from the floor to the bottom of the KW153 shall be 53 1346 2 mm Use proper lifting techniques and safety precautions when mounting on a loudspeaker pole The KW153 weighs 88 Ibs 39 9 kg KW153 WARNING Do not use a loudspeaker support pole longer than 36 914 mm when the KW153 is supported by the KW181 WARNING Do not attempt to suspend the KW181 33 ad 43 914 mm 1092 mm 46 B e dd Maximum Pole Length Between Units 1168 mm ESEN oni Maximum Pole Length KW122 Pole Mount Maximum KW152 Pole Mount Maximum Integrated Suspension Points suspended installations 1 WARNING When suspending the loudspeakers installation must be accomplished by or und
6. INE OUT POST GAIN MIX will not be at the same level as the input signal If a slave speaker is intended to playback at the same level as the master speaker the gain control on the slave speaker should be set to 0 dB Balanced Inputs Connect to the plug as shown 1 Shield ground Ground 2 Plus Inverting Input 3 Minus ground d Non inverting Input inverting input 7 non inverting input Balanced Inputs XLR Connector Balanced Inputs 1 4 Phone Jack Connector 12 Unbalanced Inputs Connect to the plug as shown If a 5 conductor TRS plug is used to connect an unbalanced source Pin 5 and pin 1 must be connected with a jumper as shown 1 Shield ground 77 Ground 2 Plus Inverting Input 3 Minus ground ch Non inverting Input non inverting input Unbalanced Inputs XLR Connector Unbalanced Inputs 1 4 Phone Jack Connector EN The KW181 is designed to accept line level inputs connected either by male XLR or 1 4 phone TS or TRS jack If signal is connected to both Channel A and Channel B they are summed together The gain of the summed signal is then controlled using the GAIN knob This affects the amount of signal sent to the amplifier and then to the loudspeaker components 1 Channel A LINE IN Combination XLR M and 1 4 Phone Jack 2 Channel B LINE IN Combination XLR M and 1 4 Phone Jack 3 Gree
7. KW Series User Manual C KW122 75 1000 W active 12 300 mm 2 way loudspeaker system KW152 60 1000 W active 15 380 mm 2 way loudspeaker system KW153 75 1000 W active 15 380 mm 3 way loudspeaker system KW181 18 460 mm 1000 W subwoofer system TD 0003 15 00 C IMPORTANT SAFETY PRECAUTIONS AND EXPLANATION OF SYMBOLS A WARNING CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE THE AMPLIFIER COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL A The lightning flash with the 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 shock to humans The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operation and EN maintenance servicing instructions in this manual Install in accordance with QSC Audio Product s instructions and under the supervision of a licensed professional installation engineer WARNING is used alert the user of situations that may cause physical harm to people CAUTION is used to alert the user of situations that may cause physical damage to equipment 1 Read these instructions 2 Keep these instructions 3 Heed all warnings and cautions 4 Follow all instructions 5 WARNING To prevent fire or electr
8. ations via prepaid transportation with a copy of proof of purchase lev sales receipt This warranty provides that the examination of the returned product must indicate in our judgement a manufacturing defect This warranty does not extend to any product which has been subjected to misuse neglect accident improper installation or where the date code has been removed or defaced QSC shall not be liable for incidental and or consequential damages This warranty gives you specific legal rights This limited warranty is freely transferable during the term of the warranty period Customer may have additional rights which vary from state to state In the event that this product was manufactured for export and sale outside of the United States or its territories then this limited warranty shall not apply Removal of the serial number on this product or purchase of this product from an unauthorized dealer will void this limited warranty Periodically this warranty is updated To obtain the most recent version of QSC s warranty statement please visit www qscaudio com Contact us at 800 854 4079 or visit our website at www qscaudio com FCC Statement NOTE 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 radia
9. awake to reduce turn on time when the system is brought out of standby The power up time of the amplifier is negligible and is shorter than the latency of the DSP so no signal is cut off when the KW Series system is brought out of standby A KW Series loudspeaker can also be manually brought out of standby by turning the POWER switch off and then back ON Front LED Functions The front LED may be set to any of three modes by the FRONT LED switch on the rear panel FRONT LED From the factory the FRONT LED switch is set to the PWR position The front LED illuminates PWR brightly when the POWER switch is in the ON position LIMIT OFF E When the FRONT LED switch is in the OFF position the front LED is not illuminated This setting is recommended in applications where the front LED may be visually objectionable When the FRONT LED switch is in the LIMIT position the front LED tracks the LIMIT LED on the rear panel When the KW Series is in limiting meaning that one or more of the limiters is engaging to protect some part of the system the front LED glows brightly in response to the limiting function This allows the system operator to have awareness of the status of the limiters without needing to see the rear of the unit For more information see the section below on the rear LIMIT LED When not in limiting and when the unit is not in standby the front LED is dimly illuminated Front LED Switch Rear LIMIT LED The
10. er the supervision of a licensed installation professional All applicable building codes must be followed The KW122 enclosure has eight and the KW152 and KW153 enclosures each feature eleven load rated M10 installation points As shipped from the factory each installation point has a flat head screw installed to acoustically seal the loudspeaker system and retain the sleek look of the endosure These installation points are designed for use with the QSC forged shoulder eyebolts included in the available accessory kit model number KW M10 KIT The installation points may also be used with any forged shoulder eyebolt with an M10 thread provided the length of the thread is no less than 1 4 35 mm When suspending the KW122 horizontally the KW SUS KIT 122 with pullback bar is required Ensure all pick point fasteners are installed and correctly tightened in order to maintain enclosure s rated strength Contact OSC Technical Services department for complete information Cooling in Installed Applications EN This is a self powered loudspeaker containing an internal power amplifier that produces heat Allow a minimum of 6 152 mm dearance at cabinet back for convection cooling Keep anything that might restrict airflow away from the rear of the enclosure i e draperies fabric etc Do not install endosures with their rear panels exposed to direct sunlight Direct sunlight will heat the amplifier module and reduce its ability to produce full out
11. gulations regarding the safety and operation of equipment are understood and adhered to WARNING KW122 Do not use a loudspeaker support pole longer than 46 1168 mm when supported by QSC s KW181 subwoofer The maximum distance between the bottom of the KW122 and the top of the KW181 shall not exceed 43 1092 mm 19 WARNING KW152 Do not use a loudspeaker support pole longer than 36 914 mm when supported by QSC s KW181 subwoofer The maximum distance between the bottom of the KW152 and the top of the KW181 shall not exceed 33 838 mm 20 WARNING KW153 Do not use a loudspeaker support pole longer than 36 914 mm when supported by QSC s KW181 subwoofer The EN maximum distance between the bottom of the KW153 and the top of the KW181 shall be 33 838 mm 21 CAUTION The loudspeaker shall not be exposed to liquids Do not place any objects filled with liquids such as vases drinks etc on the loudspeaker Warranty USA only other countries see your dealer or distributor QSC Audio Products 3 Year Limited Warranty OSC Audio Products LLC QSC guarantees its products to be free from defective material and or workmanship for a period of three 3 years from the date of sale and will replace defective parts and repair malfunctioning products under this warranty when the defect occurs under normal installa tion and use provided the unit is returned to our factory or one of our authorized service st
12. ic shock do not expose this equipment to rain or moisture Do not use this loudspeaker near water 6 Clean only with a dry cloth 7 CAUTION Allow a minimum of 6 152 mm clearance at cabinet back for convection cooling Keep anything that might restrict airflow away from the rear of the enclosure for example draperies fabric etc Do not block any ventilation openings This product contains an internal power amplifier that produces heat and requires ventilation 8 CAUTION Do not install near any heat sources such as radiators heat registers stoves or other loudspeaker including amplifiers that produce heat 9 WARNING This loudspeaker must be properly grounded for your safety The grounding plug has two blades and a grounding prong The third prong is provided for your safety If the provided plug does not fit your outlet consult an electrician for the replacement of the obsolete outlet Do not cut off the grounding prong or use an adapter that breaks the grounding circuit 10 CAUTION Protect the power cord from being walked on or pinched particularly plugs convenience receptacles and the point where they exit from the loudspeaker 11 WARNING This product is NOT equipped with an all pole mains switch To fully disconnect the loudspeaker from the AC mains the AC power cord must be removed from the AC power source or the loudspeaker AC INLET IEC block on the amplifier module Ensure either or both ends of the AC power cord are
13. is mix is affected by gain knobs on both Channel A and Channel B and the MIC LINE GAIN on Channel A but the output level is still at line level Do not connect the LINE OUT POST GAIN MIX of a KW Series system to any INPUT of the SAME UNIT This output is designed to send signal to OTHER KW Series units or to other audio equipment Failure to follow this caution may result in very unpleasant sounds produced at extremely high output volumes KW181 Both Channel A and Channel B have discrete direct outputs on female XLR connectors The signal on this output is exactly equivalent to the signal from the corresponding input The level of the output signal is not affected by the gain set on the subwoofer gain knob If a unit is OFF any signal present on MIC LINE IN A or LINE IN B passes through to the respective discrete outputs 58 gt SIGNAL OdB GAIN OFF i EM 15 1 Channel A Line Level Direct Output 2 Channel B Line Level Direct Output 3 Signal Present Indicator Green LED 4 Channel A and B Mixed GAIN Knob DSP Features The KW Series features advanced DSP digital signal processing circuitry that performs many functions Some functions are set at the design production level and are not user accessible These functions include crossovers time alignment limiting and protection thermal management and a number of proprietary features QSC has designed exclusive DSP functions that greatly enhance
14. istortion or woofer over excursion KW181 Low frequency Mode Switch 16 HF VOCAL BOOST FLAT KW122 KW152 KW153 High frequency EQ Switch POLARITY NORMAL REVERSE KW181 Polarity Reversal Switch High frequency EQ On the KW122 KW152 and KW155 there are two high frequency settings From the factory the switch is set to FLAT This means that the loudspeaker system is producing a flat response through the vocal band This is the standard setting for most applications In voice only reproduction the switch can be set to the VOCAL BOOST setting This will engage EQ that gives a stronger presence for vocal intelligibility and presence It is generally not recommended to use this setting when playing full range music through the system Subwoofer Polarity Polarity sometimes improperly referred to as phase refers to the voltage of an input signal and whether it is a positive or negative voltage at any given time In most cases a positive voltage causes a woofer cone to move forward with respect to the cabinet orientation and a negative voltage then moves the woofer cone backward Most importantly speakers reproducing the same signal or signals that are adjacent in frequency must have the same polarity to get the maximum output This is most important for low frequencies Polarity can be altered by incorrect wiring or mixer control settings The KW181 provides a polarity switch to correct any wiring or mixer setting err
15. lifier and in turn to the loudspeaker componentts It also sets the amount of signal sent to the LINE OUT POST GAIN MIX The green SIGNAL LED illuminates when a signal is present regardless of the amount of gain set by the GAIN knob If the LED does not illuminate the input is not receiving any signal or the level of the signal is too low check all connections and the status of the device delivering the signal Channel B Channel B accepts line level input only The Line Level inputs can use either a e Male XLR connector a Male 1 4 phone jack TS or TRS type or a Mono or stereo line level input on a pair of RCA phono jacks Stereo input received at the RCA input jacks is summed to mono and is not passed to the discrete outputs The gain for signal delivered on Channel B is set using the GAIN B knob This control sets the sensitivity of Channel B as well as the amount of signal sent to the power amplifier and in turn to the loudspeaker components It also sets the amount of signal sent to the LINE OUT POST GAIN MIX The green SIGNAL LED illuminates when a signal is present regardless of the amount of gain set by the GAIN knob If the LED does not illuminate the input is not receiving any signal or the level of the signal is significantly low check all connections and the status of the device delivering the signal Note Unless the gain controls associated with all active inputs are set to 0 dB the output signal from the L
16. ll applicable building codes must be followed The KW122 KW152 and KW153 have M10 threaded inserts for suspension with eyebolts EN For extra low frequency extension and enhancement the KW181 is perfectly matched to the rest of the KW Series The KW122 KW152 and KW153 all have a 100 Hz high pass filter for use with the subwoofer The KW181 includes a fixed low pass filter so it will accept full range input The KW181 has four large casters for maximum portability The pole socket on the top of the enclosure is fitted with an M20 threaded insert The included speaker pole screws into the socket for a secure fit 46 1168 mm KW122 On Stands KW152 Mounted on KW181 KW122 in Monitor Position Installation Before placing installing rigging or suspending any speaker product inspect all hardware suspension cabinets transducers brackets and associated equipment for damage Any missing corroded deformed or non load rated component could significantly reduce the strength of the installation or placement Any such condition severely reduces the safety of the installation and should be immediately corrected Use only hardware which is rated for the loading conditions of the installation and any possible short term unexpected overloading Never exceed the rating of the hardware or equipment Consult a licensed professional engineer regarding physical equipment installation Ens
17. lle 3 Front LED 4 Cast aluminum handles 3 5 1000 W Class D power module 6 MIO rigging points 8 5 0 7 Tilt Direct dual angle pole socket 8 Slip resistant feet 4 e 1 T I 8 E 6 E aaa g fos 2 ea 00 4 7 4 4 er gt C Tq o o KW152 15 2 Way Loudspeaker System 1 Birch plywood enclosure 2 Steel grille 3 Front LED 4 Castaluminum handles 2 5 1000 W Class D power module 6 M10 rigging points 11 7 Tilt Direct dual angle pole socket 8 Slip resistant feet 6 6 6 6 4 0 6 1 2 e 4 4 6 6 4 e 5 e EEG 6 8 8 6 3 6 C J L I 6 KW153 15 3 Way Loudspeaker System Birch plywood endosure Steel grille Front LED Cast aluminum handles 2 1000 W Class D power module M10 rigging points 11 35 mm pole socket Slip resistant feet iF 2 KW181 Single 18 Subwoofer 1 Birch plywood enclosure 2 Steel grille 3 Front LED 4 Castaluminum handles 2 5 1000 W Class D power module 6 M20 threaded pole receptacle 7 3 heavy dut
18. n SIGNAL LED LINE IN A gt m LINE IN B J 4 Channel A and B Mixed GAIN Knob gt 5 SIGNAL OdB OFF e 8 GAIN The green SIGNAL LED illuminates when a signal is present at either input regardless of the amount of gain as set by the GAIN knob If the LED does not illuminate the input is not receiving any signal or the level of the signal is too low Check all connections and the status of the device delivering the signal 13 Output Connections KW122 KW152 KW153 1 Channel A Line Level Discrete Output 2 Channel B Line Level Discrete Output 3 LINE OUT POST GAIN MIX 4 Channel A GAIN Knob 5 Channel B GAIN Knob 09 l OFF 10dB OFF e 10dB LINE OUT GAIN A POST GAIN MIX GAIN B 2 5 Both Channel A and Channel B have discrete direct outputs on female XLR connectors The signal on this output is exactly equivalent to the signal from the corresponding input The level of the output signal is not affected by the gain setting for that channel If a unit is OFF any signal present on MIC LINE IN A or LINE IN B passes through to the respective discrete outputs Any audio signal present on the RCA phono jacks does not get passed to the discrete outputs Signal delivered on the RCA phono jacks is not present on the Channel B direct line level output The LINE OUT POST GAIN MIX female XLR connector is a mixed output of Channel A Channel B and the RCA phono jacks Th
19. nt system DSP User Functions LF Low frequency EQ EXT SUB On the KW122 KW152 and KW153 there are three low frequency settings From the factory the switch NORM B is set to NORM This means that the loudspeaker system is producing a normal low frequency signal DEEP through the woofer This is the standard setting for most applications When using one of the top boxes with a subwoofer the switch should be moved to the EXT SUB position to engage the 100 Hz high pass filter It is also recommended that the 100 Hz high pass filter be engaged when using the KW122 as a floor monitor to prevent excessive bass build up on the stage For extra low frequency extension and low end presence when using one of the top boxes without a sub move the switch to the DEEP setting This will engage the proprietary DEEP algorithm KW122 KW152 KW153 Low frequency providing increased low frequency extension without causing distortion or woofer over excursion EQ Switch On the KW181 there are two low frequency settings From the factory the MODE switch is set to MODE NORMAL This means that the subwoofer system is producing a minimally EQ d low frequency signal Ls A NORMAL through the woofer This is the standard setting for most applications TM DEEP For extra low frequency extension and low end presence move the switch to the DEEP setting This will engage the proprietary DEEP algorithm providing increased low frequency extension without causing d
20. ocking IEC power connector 20 1 x 23 4 x 29 9 with casters 510 mm x 595 mm x 761 mm with casters 88 lb 40 kg KW181 COVER KW153 15 3 way trapezoidal loudspeaker 15 cone transducer 6 5 mid range cone transducer 1 75 diaphragm compression driver 35 Hz 18 kHz 33 Hz 20 kHz 75 axisymmetric 134 dB peak 1000 W Class D 500 W LF 0 SS f KW152 IN A 15 2 way trapezoidal loudspeaker 15 cone transducer 1 75 diaphragm compression driver 47 Hz 18 kHz 44 Hz 20 kHz 60 axisymmetric 133 dB peak KW122 12 2 way multipurpose loudspeaker 12 cone transducer 1 75 diaphragm compression driver 53 Hz 18 kHz 50 Hz 20 kHz 75 axisymmetric 131 dB peak 1000 W Class D 500 W LF 500 W HF continuous 500 W MF HF continuous Channel A XLR 1 4 Mic gain setting Balanced Unbalanced 0 dB 38k 19k 12 dB 10k 5k 24 dB 2 66k 1 33k 36 dB 660 Q 330 Q Channel B XLR 1 4 38k balanced 19k unbalanced Channel B RCA 10k Power Gain A Gain B Channel A Input Gain 0 08 12 08 24 dB 36 dB Vocal Boost Front LED On Off Limit anced female XLR 1 4 line level input Dual Balanced male 24 dB and 36 dB settings LF Mode Ext Sub Norm DEEP HE Mode Fla Power Signal A Signal B Standby Limit Mic Balanced female XLR 1 4 line mic level input Ba XLR
21. on can effectively mute the output and put the KW Series system into standby mode after 5 minutes CAUTION Do not put more than 5V or less than ground on i pin 2 or damage may 1 directly to r pin 5 ground occur Do not connect 5V pin Schematics of Proper Wiring for Remote Gain Attenuator SEI yo VO When using a single potentiometer for multiple loudspeaker 5V mm rh When using a single potentiometer for one loudspeaker 20 Kaes o piii Input Hookup 21 Output Hookup 22 1 Output Hookup Common Standalone Small System Mono amp amp NORMAL POLARITY norma MT pp REMOTE GAIN INPUT CONNECTOR PINS E o o lt IE on 23 9 gt ss I e 23
22. ors The polarity switch is set in the NORMAL position from the factory When using the KW181 with KW Series full range loudspeakers NORMAL polarity will result in the best bass response if the full range loudspeakers are sitting on or very close to the subwoofers If the subwoofers are some distance away from the full range loudspeakers polarity change may be of benefit Start with all subwoofer POLARITY switches in the NORMAL position Then with the System at or near expected operating levels change the polarity of each subwoofer individually Walk around the venue and assess the overall bass response Select the polarity that results in the best overall system bass response When using only one KW181 and connecting a LEFT and RIGHT stereo signal start with the polarity switch in the NORMAL position With the system at a reasonable level change the POLARITY switch and evaluate which polarity results in the most low frequency output 17 Additional Features Standby All KW Series models are equipped with an automatic standby feature to conserve energy when the systems are not in use If no signal is present on any input or the gain knob is turned to off for five minutes the power amplifier goes into standby and the green STBY LED illuminates In this mode the amplifier is powered down A small amount of current will continue to flow from the AC power source into the power supply of the KW Series This current keeps the power supply and DSP
23. put Install sunshades if the application merits Maximum ambient temperature for full performance to specification is 50 C 122 F Do not install enclosures where exposed to rain or other water sources The enclosure is not weatherproof Outdoor installations must provide protection from the elements AC Mains Ensure that the POWER switch is not in the ON position before connecting AC power Connect the AC power cord to the AC INLET IEC socket on the back of the amplifier by inserting the cord s IEC connector fully into the AC INLET on the power amplifier module The V LOCK power cord has a special latching feature to prevent the power cord from being unintentionally removed The IEC plug and socket are both blue in color so the power cord can be identified as a KW Series loudspeaker cord If the QSC supplied cord becomes lost or damaged a standard replacement 18 gauge IEC power cord may be used However the latching system functions only with a V LOCK power cord available from QSC Audio Products LLC The KW Series is fed by a universal power supply This power supply is capable of operating the system with AC power input voltages ranging from 100 VAC to 240 VAC at 50 60 Hz There are multiple power cables available for this reason Use only the power cable that is correct for your location AC Mains Disconnection Turn the POWER switch to the OFF not ON position Unplug the power cord from the source To remove the power cord f
24. red LIMIT LED can indicate that limiting has taken place to protect and avoid damage to the amplifier or loudspeaker If the signal level at any frequency is too high the DSP limits the signal to prevent damage and the red LIMIT LED illuminates If the amplifier is too hot due C to prolonged use at extreme SPL levels or the environment is too hot the red LIMIT LED is illuminated If the red LIMIT LED is on when both GAIN controls are at minimum for 10 minutes O your KW Series loudspeaker requires service by qualified personnel or should be moved to a cooler environment LIMIT LIMIT LED 18 REMOTE GAIN 5v m Remote Gain Attenuator sp Ww Wiring to the 3 pin Euro connector Remote Gain Attenuator A 3 pin Euro connector is provided to attenuate the volume of the KW Series loudspeaker m a remote location The Remote Gain connector can or put the system into standby fro only attenuate the output signal level below the level set by the Channel A and Channel B Gain knobs By varying the voltage on pin 2 between 5V pin 1 and 777 pin 3 ground the The voltage on m can be created by using a potentiometer volume can be linearly controlled or provided from an external source Many KW Series systems can be controlled from a single potentiometer by connecting the pins of multiple KW Series speakers together be made between 0 pin 2 and 777 pin 3 ground to A relay or manual connecti
25. rom the loudspeaker System grasp the IEC connector s plastic body press the yellow latch release button and pull POWER Switch Push in on the top of the rocker switch labeled ON to apply AC mains power to the loudspeaker s power supply Push in on the bottom of the rocker Switch to turn the powered loudspeaker off When in the ON position the green STBY LED and the red LIMIT limiter LED on the rear panel illuminate After a few seconds the red LIMIT LED and the green STBY LED extinguish and the blue POWER LED illuminates Rear POWER Indicator LED The blue POWER LED on the rear panel illuminates when the AC mains are functioning properly the AC mains power cord is connected properly the POWER switch is in the ON position and the unit is not in standby The rear POWER LED extinguishes when the AC mains power cord has been removed from the loudspeaker or source the POWER switch is in the off not ON position or the amplifier enters standby 10 If the rear POWER LED does not illuminate when the POWER switch is placed in the ON position during the first 5 minutes of power being applied verify the AC mains power cord is properly attached to the loudspeaker and plugged into the AC source outlet Verify the outlet is functioning properly If the AC mains cord is serviceable and the AC mains outlet is operating properly but the loudspeaker fails to operate the loudspeaker may require servicing Contact QSC s Technical Services departmen
26. s Main Number 714 754 6175 Sales amp Marketing 714 957 7100 or toll free USA only 800 854 4079 Customer Service 714 957 7150 or toll free USA only 800 772 2834 Facsimile Numbers Sales amp Marketing FAX 714 754 6174 Customer Service FAX 714 754 6173 World Wide Web qscaudio com E mail info qscaudio com service qscaudio com 2010 QSC Audio Products LLC All rights reserved QSC and the QSC logo are registered trademarks of QSC Audio Products LLC in the U S Patent and Trademark office and other countries Tilt Direct DMT Intrinsic Correction DEEP and Guardkail are all trademarks of OSC Audio Products LLC All other trademarks are the property of their respective owners Patents may apply or be pending KW Series User Manual 04 12 10
27. t System Power Sequencing Proper power on power off sequencing can help prevent unexpected sounds from being produced by the system pops clicks thumps These unintended sounds can be unpleasant and take away from the overall professionalism of the presentation Always follow the rule speakers are last on first off Power on Sequence Bring the output level control of the mixer or other audio source feeding your speakers to its minimum position Turn on all source devices CD players mixers instruments turn on subwoofer s then turn on the top boxes KW122 KW152 KW153 The level controls on your mixer may now be brought up Power off Sequence Turn off top boxes turn off subwoofer s and then turn off all source devices If a KW Series speaker is being driven from the output of another KW Series unit it should be turned on after the unit feeding the audio signal and turned off before the unit feeding the audio signal Input Connections KW122 KW152 KW153 The KW122 KW152 and KW153 are designed to accept microphone level and line level inputs with several different connectors There are three input connection points on the input panel 1 Channel A MigLine Input Combination XLR M and 1 4 Phone Jack 2 Channel B Line Input Combination XLR M and 4 Phone Jack 3 Channel A Mic Level Indicator Yellow LED 4 Channel B Line Input Phono 5 36 RCA Jacks 4 MIC LINE GAIN
28. te 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 Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is conneded Consult the dealer or an experienced radio TV technician for help Copyright 2010 QSC Audio Products LLC QSC is a registered trademark of QSC Audio Products LLC OSC and the OSC logo are registered with the U S Patent and Trademark Office All trademarks are the property of their respective owners Package Contents KW122 KW152 KW153 KW181 1 Loudspeaker system 1 Subwoofer system 1 Locking NEMA 5 15 power cable 1 Locking NEMA 5 15 power cable 1 Locking CEE 7 4 power cable 1 Locking CEE 7 4 power cable 1 User Manual CD 1 User Manual CD 1 Wiring hookup diagram 1 Wiring hookup diagram 1 M20 threaded loudspeaker pole Features KW122 12 2 Way Loudspeaker System 1 Birch plywood enclosure 2 Steel gri
29. the capabilities and performance of the KW Series systems Proprietary DSP Functions Excursion Limiting In addition to signal limiting to protect the amplifier and transducers from overload the KW Series utilizes a proprietary limiter that prevents woofer over excursion Over excursion occurs when a voltage presented to the woofer causes the cone to physically travel too far This builds up excessive heat stresses the moving parts of the woofer produces audible artifacts and distortion and reduces the woofer s lifespan The proprietary algorithm contained in Excursion Limiting prevents over excursion Voltages that will harm the woofer through over excursion are reduced enough to prevent over excursion without any audible compression limiting or loss DEEP Taking advantage of the Excursion Limiter the DEEP Digital Extension and Excursion Processing algorithm functions as a highly musical EN and non distorting low frequency EQ circuit More on the DEEP function is available in the EQ section of this manual Intrinsic Correction Introduced on OSC Concert Touring products Intrinsic Correction is a proprietary process and set of signal processing algorithms that address correctable characteristics of transducers and waveguides The net result is that any KW Series system will present extraordinarily even and consistent energy throughout the physical listening area of the loudspeaker resulting in a very musical acoustically transpare
30. ure that all local state and national regulations regarding the Safety and operation of loudspeakers and related equipment are understood and adhered to Recommended Deployment KW122 The KW122 is designed to sit on the floor stage monitor subwoofer enclosure be suspended or be pole mounted on a 35 mm diameter loudspeaker support pole E KW152 The KW152 is designed to sit on the floor stage subwoofer enclosure be suspended or be pole mounted on a 35 mm diameter loudspeaker support pole KW153 The KW153 was designed to sit on the floor stage subwoofer enclosure be suspended or be pole mounted on a 35 mm diameter loudspeaker support pole KW181 The KW181 was designed to sit on the floor or on the stage A threaded pole cup on the top of the enclosure accepts a M20 threaded 35 mm loudspeaker mounting pole The KW181 is shipped with a fixed length M20 threaded pole There are additional M20 speaker poles available from third party suppliers Rubber feet on the enclosure s bottom help to minimize enclosure movement during operation Do not pole mount or stack more than one enclosure on top of the KW181 enclosure As the casters will wear during normal use it may be required to insert small foam pieces between the wheels and frames to minimize rattling at high output levels KW122 WARNING Do not use a loudspeaker support pole longer than 46 1168 mm when the KW122 is supported by the KW181 subwoofer The maximum distance between
31. y casters 8 Slip resistant feet 9 Feet cups for stacking O Q 1 foem 6 0 ks Q 0 9 P 9 een m5 T 3 fej je 4 hr 2 e 3 ess 1 7 3 3 8 8 6 8 Applications The KW Series has been primarily designed for portable audio reinforcement This includes a variety of uses in reinforcement for entertainers and presenters The KW122 KW152 and KW153 are all designed to perform well on their own in full range audio They can be used singly in stereo pairs or in distributed or delayed systems The KW122 may also be used as a stage monitor WARNING The KW Series loudspeakers weigh 49 Ibs and up Use proper lifting techniques and safety precautions when mounting A on loudspeaker poles Refer to the Specifications section for the individual weights The KW122 KW152 and KW153 are equipped with a 55 mm pole socket that allows use on a speaker stand or on a pole over a KW181 subwoofer The pole socket on the KW122 and KW152 features the QSC Tilt Direct system for tilting the enclosures down 75 while on a pole The pole socket on the KW153 does not allow tilting WARNING When suspending the loudspeakers installation must be accomplished by or under the supervision of a licensed installa tion professional A
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