KH 120 A
Contents
1. 16 Troubleshooting 16 Ke ie Al EE 17 Accessories llle eher 19 Manufacturer Declarations 20 Appendix System Block Diagram IRI n I Pin assignment of the XLR SOC eli enero EE nie ren I Acoustical Measurements cece ee ec cee ccc eee eee e eee nes I PAS TallaloN d HB ee ERE eras setena es ca ions VIII Delay Lookup TH DI nur ins muscu nouer IX KH 120 1 NEUMANN Important safety instructions 1 Read these instructions Keep these instructions Always include these instructions when passing the product on to third parties Heed all warnings Follow all instructions Do not use this apparatus near water Only clean the product when it is not connected to the mains power supply Clean only with a dry cloth T Always ensure a free air flow around the cooling fins on the rear of the product Do not block any 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 polarized 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 provi2. 10 plus optional subwoofer s center front left right surround left right ANSI SMPTE 202M 0 22 5 arrays to the surround left and to the surround right plus optional subwoofer s e 7 1 systems 0 30 90 41509 plus optional subwoofer s center front left right side left right back left right The acoustical axis of the KH 120 is located at the midpoint of the bass and tweeter drivers gt Always point the acoustical axis in the horizontal and vertical planes towards the listening position The acoustical axis is a line perpendicular to the loudspeaker s front panel along which the microphone was placed when tuning the loudspeaker s crossover during design Pointing the acoustical axis in the horizontal and vertical planes towards the listening position or center of the monitoring area will give the best measured and perceived sound quality E Position the loudspeaker so that there is a direct line of sight from the listening position to rer ES the bass and tweeter drivers 8 KH 120 gt gt gt NEUMANN BERLIN Connecting audio signals Always use good quality cables with the correct impedance and appropriate termination to avoid signal drop outs and to achieve the maximum cable lengths shown below Signal connector Cable length Analog RCA low up to 10 m via an adapter RCA XLR 30 to the ANALOG INPUT socket XLR 6 see below Analog XLR low up to 100 m directly
3. NEUMANN KH 120A KH 120 D ACTIVE NEAR FIELD LOUDSPEAKER OPERATING MANUAL GEORG NEUMANN GMBH OLLENHAUERSTR 98 13403 BERLIN GERMANY TEL 49 0 30 4177 24 0 FAX 50 HEADOFFICE NEUMANN COM WWW NEUMANN COM NEUMANN Contents Important safety instructions 2 The KH 120 studio monitor 1 4 Delivery includes EEN 4 Product overview llle err 5 Installing and connecting the KH 120 7 Preparing the loudspeakers 7 Preparing the An erinnere hessen 7 Positioning the loudspeakers 0 ccc cece ete eee ene eens 8 Connecting audio signals 9 Connecting disconnecting the KH 120 to from the mains power supply 12 Configuring and using the KH 120 12 Switching the KH 120 on off NEE ts e howd ns o e aio Res 12 Adjusting the frequency response 12 Adjusting the acoustic level 13 Compensating for video delay lip sync 14 Compensating for listening distance differences time of flight 14 eg ele rownd 15 Adjusting the brightness of the Neumann logo 16 Cleaning and maintaining the KH 120
4. The symbols on this label have the following meaning Presence of uninsulated dangerous voltage within the product s enclo sure that may be of sufficient magnitude to constitute a risk of fire or electric shock Never open the product or remove the grilles fitted to the product as CAUTION there is a risk of electric shock There are no user serviceable parts mE M RISK OF ELECTRIC SHOCK inside Refer servicing to your Neumann service partner DO NOT OPEN Read and follow the safety and operating instructions contained in the operating manual Intended use of the product includes having read this operating manual especially the chapter Important safety instructions using the product within the operating conditions and limitations described in this operat ing manual Improper use means using the product other than as described in this operating manual or under operating conditions which differ from those described herein KH 120 3 NEUMANN The KH 120 studio monitor Thank you for purchasing a Neumann studio monitor The KH 120 features a Mathematically Modeled Dispersion Waveguide MMD flexible acoustical controls various input options and an extensive range of mounting hardware This allows the loudspeaker to be used in diverse acoustical conditions with any source equipment and in a wide variety of physical locations The KH 120 represents the latest in acoustic and electronic simulation and measure
5. levels AES3 signal levels in XLR cables are much too high for the AES3 INPUT socket BNC 43 If you connect such signals without reducing the signals level damage to the product will occur Always make sure that your converter is able to match impedance and level 10 KH 120 D gt NEUMANN BERLIN KH 120 D Source 1100 75 Loudspeaker 1 XLR F SE 2 n ie BNC 1 9 h 1e ld 2 Signal Vs 90 112 mW Use E96 1 resistors f AES3 on XLR to AES3 on BNC Connections 3 Si gna l This method brings impedance matching and level matching but no source receiver iso lation Use a resistor network to passively attenuate the XLR signal from 3 1 V down to 0 42 V and change the impedance from 110 Q to 75 Q Connecting multiple KH 120 D loudspeakers together gt Use the AES3 OUTPUT socket 2 and INPUT socket 49 T pieces are not required see picture below gt Make an appropriate setting DIGITAL A or DIGITAL B on the SIGNAL SELECT rotary switch 4 End of the line external termination is not required as the AES3 INPUT socket BNC 13 already has an internal 75 Q termination Set back panel switch to DIGITAL A Set back panel switch to DIGITAL B Subframe A Left signal Subframe B Right signal Digital Source RCA BNC or XLR AES3 or S P DIF Setting the SIGNAL SELECT rotary switch Select one of the following settings depending on your needs EX A ANALOG XLR input socke
6. off the Neumann logo in low light level environments or when the loudspeaker is placed behind an acoustically transparent screen Setthe DIP switch 1 to On to switch on the Neumann logo Off to switch off the Neumann logo Set the DIP switch 2 to e Dim to dim the Neumann logo Bright to not dim the Neumann logo D When the loudspeaker s protection system is active or invalid digital signals are connected to the KH 120 D the Neumann logo s color changes from white to red The brightness of this red limiter indication can be adjusted by means of the DIP switch 2 Dim or Bright However you cannot switch off the limiter indica tion as it appears independent of the position of the DIP switch 1 Cleaning and maintaining the KH 120 CAUTION Damage to the product caused by liquids Liquids entering the product can cause a short circuit in the electronics and damage or even destroy the product gt Keep all liquids away from the product Before cleaning disconnect the product from the mains power supply Use a soft dry and lint free cloth to clean the product Troubleshooting Problem ESO Solution The Neumann logo is off no sound The KH 120 s main fuse Have the product checked by an is heard from the KH 120 has blown authorized Neumann service partner The Neumann logo is off or not The Neumann logo is Switch on the Neumann logo clearly visible but sound is heard switched off
7. 0 9 0 9 0 310 1 0 0 0 0 0 10 1 0 0 344 1 2 0 0 0 0 11 AL A 0 378 1 3 0 0 0 0 12 12 0 413 1 4 0 0 0 0 13 13 0 447 1 6 0 0 0 0 14 1 4 0 482 il T 0 0 0 0 15 1 5 0 516 1 8 0 0 0 0 X KH 210 11 13 554653 A01
8. 419 35 226 44 032 52 838 61 645 70 451 79 258 88 064 96 870 105 677 114 483 123 290 132 096 0 O 0 0 0 0 28 57 86 115 144 173 202 231 260 288 317 346 375 404 433 11 11 10 0 6 1 3 19 2 6 3 2 3 8 4 5 5 1 5 8 6 4 7 0 Gil 8 3 9 0 9 6 0 8 1 5 2 3 3 1 3 8 4 6 5 4 6 1 6 9 GR 8 4 9 2 10 0 10 8 Switch 2 1 6 ms Time ms 0 0 1 6 32 4 8 6 4 8 0 9 6 14 4 16 0 17 6 19 2 20 8 22 4 24 0 0 000 0 550 1 101 1 651 2 202 2 752 3 302 3 853 4 403 4 954 5 504 6 054 6 605 7 155 7 706 8 256 Distance Imperial O 0 0 0 0 0 10 12 14 16 18 19 21 23 25 27 10 0 0 0 1 0 1 0 2 0 2 0 2 0 3 0 3 0 4 0 4 0 4 0 5 0 5 0 6 0 6 0 0 0 1 0 1 0 2 0 2 0 3 0 3 0 4 0 4 0 5 0 5 0 6 0 6 0 7 0 7 KH 210 IX NEUMANN BERLIN Delay Lookup Table Wertetabelle Delay Tableaux de valeurs Delay Tabla de valores Delay Switch 3 0 1 ms Time ms Distance Distance Imperial m DENM COMM SE E 0 0 O 0 0 0 000 0 O 0 0 1 0 1 0 034 O 1 0 0 0 0 2 0 2 0 069 0 3 0 0 0 0 3 0 3 0 103 O 4 0 0 0 0 4 0 4 0 138 0 5 0 0 0 0 5 0 5 01172 O 7 0 0 0 0 6 0 6 0 206 O 8 0 0 0 0 7 0 7 0 241 O 9 0 0 0 0 8 0 8 0 275 0 11 0 0 0
9. D 25 W 200W 277 x 182 x 220 mm 100 0 X 71 8 X 85 8 6 5 1 9 7 KH 120 A 6 4 kg 14 lbs 2 oz KH 120 D 6 5 kg 14 lbs 5 oz magnetically shielded 130 mm 5 25 25 mm 1 2 x M8 on rear panel with depth 15 mm 3 painted aluminium Anthracite RAL 7021 or White 9016 or other RAL color These are the sample rates for which the delay setting value shown on the back panel is valid Depending on the sample rate this value should be added to the delay setting on the back panel to give the total delay 18 KH 120 NEUMANN BERLIN Operating conditions Ambient temperature 10 C to 40 C 50 F to 104 F Relative humidity max 90 non condensing Power supply 100 to 240 V 50 60 Hz Transport storage conditions Ambient temperature 25 C to 70 C 13 F to 158 F Relative humidity max 90 In compliance with Europe CE EMC EN 55103 1 2 Electromagnetic Environment Class E3 Safety EN 60065 USA 47 CFR 15 subpart B Canada CAN ICES 3 B NMB 3 B Acoustical measurements block diagram and pin assignment Additional technical data such as acoustical measurements a block diagrams and the pin assignment of the XLR socket can be found at the end of this operating manual Accessories Product Description a BKH 120 Soft carry bag for 1 pair of KH 120 FKH 120 Flight case for 1 pair of KH 120 LH 28 Tripod stand adapter LH 29 TV spigot lighting stand adapter LH 32 Wall L br
10. L Dh a us CN mem m om m Level dB X m z mom m m SS 100 1 000 10 000 Frequency Hz time ms KH 210 V NEUMANN BERLIN Horizontal Directivity Plot Horizontales Abstrahlverhalten Directivit horizontale Directividad horizontal E 24 0 21 0 H 21 0 180 M 18 0 15 0 L1 15 0 12 0 E 12 0 9 0 LI 9 0 6 0 1L1 6 0 3 0 H 3 0 0 0 O 0 0 3 0 O 3 0 6 0 m CX un DONT AE URN gt O Angle Frequency Hz VI KH 210 NEUMANN BERLIN Vertical Directivity Plot Vertikales Abstrahlverhalten Directivit verticale Directividad vertical E 12 0 9 0 18 0 15 0 E 15 0 12 0 ll 21 0 18 0 E 24 0 21 0 1 9 0 6 0 L1 6 0 3 0 1L1 3 0 0 0 10 0 3 0 O 3 0 6 0 0 Angle Q D Qn O O Frequency Hz KH 210 VII NEUMANN Installation angles Aufstellwinkel Angles d installation ngulos de colocaci n 30 22 5 22 5 30 v e 60 60 X X X X X 90 110 110 120 120 VIII KH 210 NEUMANN BERLIN Delay Lookup Table Wertetabelle Delay Tableaux de valeurs Delay Tabla de valores Delay O 10 11 12 13 14 15 Switch 1 25 6 ms Time ms 0 0 25 6 51 2 76 8 102 4 128 0 153 6 17272 204 8 230 4 256 0 281 6 307 2 332 8 358 4 384 0 Distance m 0 000 8 806 17 613 26
11. NALOG INPUT socket XLR 3 On off switch 4 IEC mains socket with protective ground contact 5 DIP switches 1 4 1 Switches the Neumann logo on off 2 Dims the Neumann logo 3 No function 4 Connects disconnects ground lift 6 ANALOG INPUT socket XLR EN 42 AES3 OUTPUT socket BNC EN 43 AES3 INPUT socket BNC SIGNAL SELECT rotary switch 5 DELAY rotary switches KH 120 5 i a ZZ gt ZcmZ gt NEUMANN BERLIN amp 9 Back panel KH 120 A go 0 7 ACOUSTICAL CONTROLS switches OUTPUT LEVEL switch 9 INPUT GAIN control Cooling fins 4 Threaded inserts for Neumann mounting hardware Back panel KH 120 D 7 ACOUSTICAL CONTROLS switches OUTPUT LEVEL switch 9 INPUT GAIN control Cooling fins 4 Threaded inserts for Neumann mounting hardware 42 AES3 OUTPUT socket BNC 43 AES3 INPUT socket BNC SIGNAL SELECT rotary switch 5 DELAY rotary switches 6 KH120 NEUMANN BERLIN Installing and connecting the KH 120 CAUTION Danger of injury and material damage due to tipping dropping of the product If improperly mounted the product and or the mounting hardware e g rack can tip over or drop down Always have the product mounted by a qualified specialist according to local national and international regulations and standards Use the mounting systems recommended by Neumann and always provide sufficient additional protection against tipping or
12. SA 108 10 on the mixing console s output level meters gt Measure the sound pressure level at the listening position using a sound level meter with the following settings e C weighted slow integration time Set the OUTPUT LEVEL switch 8 and INPUT GAIN control 9 of your loudspeakers so that the desired acoustic level is obtained KH 120 13 NEUMANN BERLIN Recommended sound pressure levels Application Sound pressure level Film 85 dB C Broadcast 79 to 83 dB C Music No defined reference levels If the Neumann logo flashes red the loudspeaker s protection system has been activated To avoid this and achieve the desired output level use larger loudspeakers or add a bass man aged subwoofer to the system Examples of sound pressure levels as a function of the input and output level of the KH 120 Input signal 0 0 4 20 dBu 0 775 V 0 775 V 1 23 V 77 5 mV INPUT GAIN control 9 15 4 15 dB OUTPUT LEVEL switch ee a 100 100 94 114 dB SPL Sound pressure level 100 85 94 79 dB SPL at 1 m Compensating for video delay lip sync KH 120 D Signal processing in LCD Plasma and LED screens digital projectors with LCD or DLP chips and video processors used in broadcast centers delays the video signal The delay is disturbing when audio leads video by more than 20 ms or lags by more than 40 ms To compensate for the video signal delay the audio signal of the KH 120 D
13. acket LH 43 Surface mounting plate LH 45 Wall bracket LH 46 Adjustable ceiling drop adapter LH 47 Mounting adapter plate LH 48 Tripod adapter plate LH 61 Adjustable L bracket LH 64 Omnimount VESA adapter LH 65 Table stand KH 120 19 NEUMANN Manufacturer Declarations Guarantee For the current terms and conditions of the product guarantee please visit www neumann com In compliance with the following requirements e WEEE Directive 2002 96 EC Please dispose of the product at the end of its operational lifetime by taking it to your local collection point or recycling center for such equipment Fi C CE Declaration of Conformity RoHS Directive 2011 65 EU Low Voltage Directive 2006 95 EC e EMC Directive 2004 108 EC The declarations are available on the product page at www neumann com Certified by Be Audio Video and Similar Electronic Apparatus Safety Requirements CAN CSA C22 2 CUS No 60065 03 and UL Std No 60065 Trademarks Neumann is a registered trademark of Georg Neumann GmbH The following are trademarks of Georg Neumann GmbH e Mathematically Modeled Dispersion and MMD Other company product or service names mentioned in this operating manual may be the trademarks service marks or registered trademarks of their respective owners FCC This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not ca
14. can be delayed by up to 409 5 ms which is 10 2 frames at 40 ms frame or 12 3 frames at 33 ms frame The same value should be used for all loudspeakers in the system D Please consider the information on latency on page 15 Compensating for listening distance differences time of flight Loudspeakers placed at different distances suffer from time of flight differences which affects imaging The DELAY resolution is small enough 0 1 ms that the delay can be used for time of flight adjustment 3 44 cm or 1 3 8 steps To compensate for the time of flight X 25 6 ms x 1 6 ms x 0 1 ms DIGITAL DELAY delay the audio signal can be delayed by up to 409 5 ms which is 140 87 m 462 2 Loudspeakers positioned closer to the listening position should be delayed to be the same as the furthest loudspeaker from the listening distance Example Loudspeaker A listening distance 1 50 m Loudspeaker B listening distance 1 65 m Time of flight difference 0 15 m So loudspeaker A should be delayed by the time equivalent of 0 15 m which is 0 436 ms 0 15 m 3 44 cm x O 1 ms The nearest setting of the DELAY rotary switches 9 is O 4 ms so set the O 1 ms switch to position 4 i Please consider the information on latency on page 15 14 KH 120 NEUMANN KH 120 D If a video delay compensation has already been made add the time of flight difference here O 4 ms to the setting already made Example Video delay compensation on
15. d off see page 16 e OFF to switch off the loudspeaker The Neumann logo goes off e There is a five second delay before sound can be heard from the loudspeaker in order to avoid noises pops from preceding equipment switched on at the same time Con versely switching off the loudspeaker immediately mutes the audio Adjusting the frequency response When all its acoustical controls are set to O dB the KH 120 loudspeaker is designed to have a flat frequency response in anechoic conditions When the loudspeaker is installed in your monitoring environment the response changes The same loudspeaker installed in different positions in the same room may require different acoustical control settings In a symmetrical installation left right pairs front or back will probably have the same acoustical settings Before using your loudspeaker system for the first time calibrate the frequency response of the loudspeakers in the room in order to obtain the desired response gt Repeat the above step if you change the physical conditions in your studio At your listening position determine the frequency response of each loudspeaker NEUMANN BERLIN ET Use the ACOUSTICAL CONTROLS switches 7 to adjust the frequency response Recommended frequency responses BASS LOW MID TREBLE 3 Em W Studio applications flat m 3 u Film applications X curve shape see ANSI SMPTE 202M Home applications subjective e
16. ded for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protectthe power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution a when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service 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 when the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 To completely disconnect this apparatus from the AC mains disconnect the power supply cord plug from the AC receptacle 16 WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture 17 Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids such as vases are placed on the equipment 18 The mains plug of the power supply cord shall remain readi
17. dropping CAUTION Damage to the product due to overheating If air cannot circulate properly around the cooling fins on the rear of the product the amplifier s may overheat leading to premature activation of the thermal protection system which limits the maximum output level of the loudspeaker In rare cases damage to the product may also occur Never cover the cooling fins When installing the product into tight spaces such as wall recesses maintain an air gap of at least 5 cm 2 around the top rear and side panels of the product and provide suf ficient air circulation If necessary use forced air cooling e g in OB vans For information on installation please refer to the supplied Getting Started Quickly supplement This will help you set up the loudspeakers in a way that will give you the best acoustic performance from the system For further information on setting up loudspeakers please refer to the Questions amp Answers section on the product page at www neumann com For more information on building systems using Neumann loudspeaker products please refer to the Product Selection Guide at www neumann com Preparing the loudspeakers CAUTION Risk of staining surfaces Some surfaces treated with varnish polish or synthetics may suffer from stains when they come into contact with other synthetics Despite a thorough testing of the synthetics used by us we cannot rule out the possibility of stainin
18. e at www neumann com Activating ground lift If there is humming or buzzing noise coming from the loudspeaker first search for the cause of the noise gt Disconnect all input and output signal cables from the loudspeaker If the noise goes away it is probably coming from the audio source or source cabling It might be possible to eliminate the noise by disconnecting the ground from the input signals activating ground lift To activate ground lift gt Reconnect the signal cables and set the DIP switch 4 Ground lift to Lift This internally disconnects pin 1 of the ANALOG INPUT socket XLR 6 from the loudspeak er s chassis ground see diagram Pin assignment of the XLR socket on page 9 i For safety reasons the electronics chassis ground is always connected to the mains power earth pin KH 120 15 NEUMANN BERLIN Adjusting the brightness of the Neumann logo WARNING Danger of hearing damage due to unexpected high sound pressure levels If the Neumann logo is switched off it is not obvious whether the product is switched on or off In this case unex pected high sound pressure levels can cause hearing damage Always set the audio sources connected to the loudspeaker to a low output level before they deliver an audio signal If you switch off or dim the Neumann logo mention this to everyone who works with this loudspeaker or the connected audio sources To dim or switch
19. g gt Do not place the loudspeaker on delicate surfaces To place the loudspeaker on a flat surface Attach the supplied self adhesive feet to the bottom of the cabinet This reduces the risk of scratching the surface and acoustically isolates the loudspeaker from the surface Preparing the room Arrange all acoustically relevant surfaces and objects symmetrically on either side of the listening axis of the room left right gt Minimize the sound that is reflected back to the listening position by using angled surfaces and or acoustical treatment This product has been optimized for use in recording studios In order not to affect the quality of reproduction make sure that the product is used in an EMC environment KH 120 7 NEUMANN Positioning the loudspeakers Carry out the following steps very accurately since the more accurate the physical arrange ment of the loudspeakers in the room the more accurate the reproduction will be at the listening position Distances P Observe the recommended distances between the loudspeakers and your listening position imperial dimensions are approximate e Minimum 0 75 m 2 5 e Recommended 1 0 2 0 m 3 6 e Maximum 4 0 m 12 Quat Avoid positioning the loudspeaker at a distance d wat Of 0 8 to 2 m from the wall behind a U the loudspeaker When positioning bass managed loudspeakers avoid a distance d LT NN of 0 8 to 1 m from a solid wall behind t
20. he loudspeaker Similarly avoid these distances CO AIN from solid side walls or a solid ceiling Respecting these positioning limitations reduces the chances of dips in the low frequency response comb filtering caused by strong reflec tions NNNNNN SK 1 We 1 pa 1 1 X E N N N GR INNNNNNXX Arranging the Copythe diagram Installation angles that can be found at the end of this operating manual loudspeakers P gt Place the diagram at the listening position or center of the listening area at an angle gt Using a tape measure place the loudspeakers at the same distance from the center of the diagram Installation angles To ensure good imaging do this at an accuracy of at least 1 cm gt If the loudspeakers cannot be placed at the same distance from the listening position com pensate for distance differences gt 1 cm by delaying closer loudspeakers by 30 us cm 76 us inch If you are using the KH 120 D KH 120 D gt Use the DELAY rotary switches 5 to compensate for distance differences see page 14 The DELAY rotary switches 5 allow for corrections with a resolution of 3 44 cm 1 3 8 any small remaining time of flight adjustment should be made by moving the loudspeaker cabinet Check the location of the loudspeaker cabinet This depends on the application 2 0 systems stereo 30 plus optional subwoofer s e 5 1 systems ITU R BS 775 1 0 30 110
21. ivity Dynamic range A D A D A THD N analog delayed digital Maximum delay time distance Maximum delay audio video synchronization lip sync Minimum delay resolution time distance Latency D A with delay O ms Latency A D A with delay O ms DELAY rotary switches 9 and SIGNAL SELECT rotary switch 49 setting acknowledgement Digital error Loudspeaker s protection system is active Product properties Power consumption idle Power consumption full output AC Dimensions H x W x D Internal net volume external volume Weight Drivers woofer tweeter Threaded inserts for Neumann mounting hardware Cabinet surface finish Color gt 56 dB 100 Hz to 10 kHz ANALOG mode gt 56 dB 100 Hz to 12 kHz ANALOG DELAYED mode 24 dBu ANALOG mode 18 dBu ANALOG DELAYED mode AES3 S P DIF 75 Q input and output Analog Digital A Digital B Digital A B 16 24 bit 22 05 24 32 44 1 48 64 88 2 96 176 4 192 18 dBFS 100 dB SPL at 1m gt 116 dB A 123 dB A lt 104 dB lt 106 dB 409 5 ms 140 87 m 462 2 10 2 at 40 ms frame 12 3 at 33 ms frame 0 1 ms 3 44 cm 1 3 8 1 84 ms at 22 05 kHz 1 70 ms at 24 kHz 1 28 ms at 32 kHz 0 93 ms at 44 1 kHz 0 86 ms at 48 kHz 0 64 ms at 64 kHz 0 47 ms at 88 2 kHz 0 43 ms at 96 kHz 0 24 ms at 176 4 kHz 0 22 ms at 192 kHz 0 54 ms Neumann logo Red 3 flashes Neumann logo Red 1 flash KH 120 A 20 W KH 120
22. long term SPL with pink noise at 2 3 m in typical listening conditions single pair Woofer amplifier continuous peak output power Tweeter amplifier continuous peak output power Controller design Crossover frequency crossover slope ACOUSTICAL CONTROLS switches Protection circuitry Infrasonic filter frequency slope Analog input Input type Input Impedance Input gain control sensitivity OUTPUT LEVEL switch 52 Hz to 21 kHz 3 dB 54 Hz to 20 kHz 2 dB 20 dB A at 10 cm 100 Hz 105 1 dB SPL 111 1 dB SPL 104 8 dB SPL 107 dB C SPL 97 dB C SPL full range 104 dB C SPL with subwoofer 88 93 dB C SPL full range 89 94 dB C SPL with subwoofer 50 W 80 W THD and noise lt 0 1 with deactivated limiter 50 W 80 W THD and noise lt 0 1 with deactivated limiter analog active 2 0 kHz 24 dB oct 4 order BASS D 25 5 lt alle LOW MID O 1 5 3 4 5 dB TREBLE 1 O 1 2 dB Limiter low high 30 Hz 6 dB oct XLR electronically balanced depending on the position of the OUTPUT LEVEL switch 8 114 dB SPL 20kQ 108 dB SPL 10 ko 100 dB SPL 20 kQ 94 dB SPL 10 kQ O dB to 15 dB 94 100 108 114 dB SPL KH 120 17 NEUMANN CMRR Maximum input level Digital input output KH 120 D only Signal format BNC Impedance BNC unbalanced Input switching Digital converter resolution Digital converter sampling rates kHz Digital sensit
23. loudspeaker A 2x 40 ms frame Desired time of flight compensation for loudspeaker A 0 4 ms Time of flight compensation 80 4 ms This delay value can be made with these switch settings 3 x 25 6 ms 2x 1 6 ms 4 x O 1 ms The latency of the analog to digital and digital to analog converters should be taken into account when using the DELAY rotary switches 5 for time of flight com pensation For the digital to analog conversion input signal via digital connector the latency is dependent on the sample rate values can be seen in the Specifica tions table on page 18 The analog to digital to analog conversion input sig nal via analog connector is fixed at 0 54 ms For time of flight compensation delay calculate the desired delay value then sub tract the appropriate latency depending on the input signal and sample rate and then set the needed additional delay using the delay switches on the back panel Example Distance compensation for 1 m 1 m 344 m s 2 91 ms 2 91 ms Digital input signal sample rate 48 kHz latency 0 85 ms 2 06 ms Delay settings Ox25 6 ms 1x 1 6 ms 5 x 0 1 ms equals 2 1 ms which is the nearest value For video delay compensation converter latency can be ignored as it is insignifi cant compared to long video signal delays To help with choosing a delay setting there is a set of lookup tables at the end of this operating manual Also Neumann has made a delay calculator which is avail abl
24. ly accessible NJ DUE Installation Ensure that the room in which you use this product is wired in accordance with the local electrical code and checked by a qualified inspector Only use the product indoors Do not install the product in hot humid or excessively dusty locations in direct sunlight or in locations where it is exposed to externally generated vibrations Do not place burning objects e g candles on top of or near the product If condensation has formed on the product e g because it was moved from a cold environ ment to a warm one allow the product to acclimatize to room temperature before using it Do not overload wall outlets and extension cables as this may result in fire and electric shock 2 KH 120 EI N f NN N M gt D 4 NN N e e N 4 f INIZ 4 NW gt 4 Danger due to high sound pressure levels Magnetic fields Hazard vvarnings on the rear of the product Intended use OCD BER WARNING Danger of hearing damage due to sudden high sound pressure levels Audio signals that are present at switch on of the product or that can be present during operation can create sudden very high sound pressure levels which can damage your hearing gt Always lower the output level of the audio source before connecting it to the loudspeaker or starting it pressing play This loudspeaker can be used for commercial purposes Commercial use is
25. ment technologies to ensure the most accurate sound reproduction possible Depending on the size Neumann s two way loudspeaker systems are designed for use as near field monitors or as rear loudspeakers in larger multi channel systems They can be used in project music broadcast and post production studios for tracking mixing and mastering Delivery includes 1 KH 120A or KH 120 D 4 Self adhesive feet 1 Operating manual 1 Supplement Getting Started Quickly Delivery also includes European UK or US mains cables Note that imperial dimensions are approximate AMETE The current operating manual as well as the supplement Getting Started Quickly can also be D m P downloaded from the Downloads area on the product page at www neumann com 4 www neumann com O 4 KH 120 NEUMANN BERL Product overview Front panel Bottom KH 120 A Bottom KH 120 D D Neumann logo lights up white loudspeaker is switched on and ready for operation flashes red loudspeaker s protection system is active or A digital signal is selected via the SIGNAL SELECT rotary switch 44 but there is no valid digital signal con nected 2 Bass reflex ports 3 On off switch 4 IEC mains socket with protective ground contact 5 DIP switches 1 4 1 Switches the Neumann logo on off 2 Dims the Neumann logo 3 No function 4 Connects disconnects ground lift 6 A
26. or dimmed and switch off the dimming see from the KH 120 page 16 The Neumann logo is flashing red A DIGITAL signal is Connect a valid signal to the digital input but there is no sound selected on the SIGNAL check the cabling or set the SIGNAL SELECT rotary switch SELECT rotary switch 4 to ANALOG but there is no valid audio signal connected to the digital input 16 KH 120 CDI dd N E U M A N N DELAL N ATA Cause sten There is hum or buzz coming from the KH 120 when the audio cable is connected Bad cabling or ground loop in the installation Check all cabling to eliminate the cause of the problem change from unbalanced to balanced cabling or use the ground lift switch see page 15 For further information please refer to the Questions amp Answers section on the product page at www neumann com Specifications 3 dB free field frequency response Pass band free field frequency response Self generated noise with input gain set to 100 dB for O dBu Total harmonic distortion lt 0 5 96 at 95 dB SPL at 1 m Max SPL in full space calc in half space at 3 THD at 1 m averaged between 100 Hz and 6 kHz Bass capability Max SPL in half space with 3 THD at 1 m averaged between 50 Hz and 100 Hz Max short term SPL with IEC weighted noise IEC 60268 5 at 1 m in typical listening conditions Max short term SPL with music material at 2 3 m in typical listening conditions pair Max
27. subject to the rules and regulations of the trade association responsible Neumann as the manufacturer is there fore obliged to expressly point out possible health risks arising from use This loudspeaker is capable of producing sound pressure levels exceeding 85 dB A SPL This is the sound pres sure corresponding to the maximum permissible level which is by law in some countries allowed to affect your hearing for the duration of a working day 8 hours It is used as a basis according to the specifications of industrial medicine Higher sound pressure levels and or longer durations can damage your hearing At higher sound pressure levels the duration must be shortened in order to prevent hearing damage The following are signs that you have been subjected to excessive sound pressure levels for too long a time You can hear ringing or whistling sounds in your ears You have the impression even for a short time only that you can no longer hear high fre quencies temporary threshold shift WARNING Interference due to magnetic fields This product generates a permanent magnetic field gt 1 5 mT that can interfere with car diac pacemakers and implanted defibrillators ICDs gt Always maintain a distance of at least 4 10 cm between the loudspeaker and the car diac pacemaker or implanted defibrillator The label shown on the right is attached to the rear of the product CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN
28. t 6 DIGITAL A Digital subframe A AES3 INPUT socket 3 DIGITAL B Digital subframe B AES3 INPUT socket 3 DIGITAL A B Digital subframe A summed with digital subframe B and a 6 dB attenuation AES3 INPUT socket 43 Each of these can be selected with and without delay added so it is very quick to bypass the delay The digital output is a copy of the digital input signal which can be used to feed the digital signal onto other loudspeaker or products There is no digital output from the AES3 OUTPUT socket BNC 42 when an analog signal is connected to the ANALOG INPUT socket 6 therefore the KH 120 D cannot be used as an analog to digital converter KH 120 11 NEUMANN 12 KH 120 Connecting disconnecting the KH 120 to from the mains power supply To connect the KH 120 to the mains power supply Make sure that the on off switch 3 is set to OFF Connect the IEC connector of the supplied mains cable to the mains socket 4 Power Source gt Connect the mains plug of the mains cable to a suitable wall socket To disconnect the KH 120 from the mains power supply Set the on off switch 3 to OFF Pull the mains plug out of the wall socket Configuring and using the KH 120 Switching the KH 120 on off Set the on off switch to e ON to switch on the loudspeaker The Neumann logo lights up provided that is has not been switche
29. to the ANALOG INPUT 3007 socket XLR 6 see below AES3 BNC 750 up to 100 m directly to the AES3 INPUT 300 socket BNC 43 see page 10 AES3 XLR 110 Q up to 100 m via an impedance converter and 300 an adapter XLR BNC to the AES3 INPUT socket BNC 43 see page 10 S P DIF RCA 750 up to 10 m via an adapter RCA BNC to the 30 AES3 INPUT socket BNC 3 see page 10 Connecting analog signals to the KH 120 A and the KH 120 D Connecting Only connect analog signals to the KH 120 A XLR cables Connect the left and right output of your analog audio source to the XLR input sockets of the respective loudspeaker XLR XLR Right signal Left signal Analog Source gt Use an XLR adapter not supplied to connect unbalanced cables e g RCA cables Use the following wiring if you want to make your own XLR adapter Source RCA Loudspeaker XLR M 1 Audio ground Unbalanced RCA to balanced XLR connections 3 Signal D If there is a humming sound from the loudspeaker activate ground lift to disconnect pin 1 of the ANALOG INPUT socket XLR 6 from the loudspeaker s chassis ground KH 120 9 gt NEUMANN BERLIN Connecting digital signals to the KH 120 D KH 120 D Connecting gt Connect the digital AES3 or S P DIF output signal of your audio source to the AES3 AES cables INPUT socket 43 of the respective KH 120 D See picture below D The KH 120 D loudspeaker only s
30. upports non encoded AES3 and S P DIF signals Encoded signals such as MP3 DTS or Dolby Digital are not supported gt Make an appropriate setting DIGITAL A or DIGITAL B on the SIGNAL SELECT rotary switch 4 The setting depends on the signal channel order and the loudspeaker position D Only one cable is needed for uncompressed AES3 and S P DIF digital signals single wire mode They contain two audio channels subframe A and sub frame B Usually the audio channels are Subframe A Subframe B Left Right Center LFE Surround left Surround right Back left Back right A clock input is not required because loudspeakers are not audio sources and the converters are clocked to a very stable internally generated clock source To connect an additional loudspeaker gt Use the AES3 OUTPUT socket 12 See picture below gt Make an appropriate setting DIGITAL A or DIGITAL B on the SIGNAL SELECT rotary switch 4 Digital Source RCA BNC or XLR AES3 or S P DIF gt Use a Neutrik NADITBNC F impedance and level converter not supplied for XLR to BNC conversions of AES3 signals This method brings impedance matching level matching and source receiver isolation The Neutrik NADITBNC F converter is guaran teed to work up to 48 kHz Only one converter is needed per digital signal cable Use the following wiring if you want to make your own converter CAUTION Damage to the product due to high AES3 signal
31. use harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation This class B digital apparatus complies with the Canadian ICES 003 Changes or modifications made to this equipment not expressly approved by Neumann may void the FCC authorization to operate this equipment 20 KH 120 NEUMANN System Block Diagram System Blockdiagramm Synoptique Systeme Diagrama de Bloques del Sistema Pin assignment of the XLR socket E Bog Buchsenbelegung XLR S P DIF can be received on the BNC EET connectors with a suitable adapter Nw ERE Brochage de la prise XLR vM overeat hay Asignaci n de la hembra XLR BNC AES3 Output 0 BNC AES3 Input 24 bit 192 kHz Audio ground Audio Erdung Masse audio Toma de tierra de audio Power on Mute 1 Display Dimmer On Off Bright Dim u d D LE Treble Signal Signal Signal Limiters XLR Analog O Production x AES3 Input A SS ES En a eh NE P IN Bass GND Lift N p Power Amplifiers ns Fine Coarse 0 0 1 Gain p E D Signal Signal Signal SE 75 45 2 Sefial with and Bass Low Mid Treble without delay Acoustical Measurements Akustische Messungen Mesures acoustiques Mediciones Ac sticas Below are acoustical measurements conducted in anechoic conditions at 1 m Die folgenden akustischen Messungen wurden unter refle
32. valuation ACOUSTICAL CONTROLS Function Possible settings switches 7 Bass Compensates for acoustical loading in 0 2 5 5 7 5 dB the low frequency range due to nearby large solid boundaries e g walls Low Mid Compensates for acoustical loading in 0O 1 5 3 4 5 dB the low mid frequency range due to nearby large solid objects e g mixing consoles or desks Treble Compensates for insufficient or 1 O 1 2 dB excessive high frequency damping in the room The following settings can be used as a starting point for further adjustment Loudspeaker position Acoustical controls Bass tow mid Treble In a corner 7 5dB 1 5 dB Next to an acoustically solid wall e g brick concrete 5 dB Next to an acoustically soft wall e g gypsum 2 5 dB Free standing in an untreated room 2 5 dB 1 dB Free standing in a well treated room E z In a small room with strong side wall reflections 5 dB O dB Near a small desktop or small reflecting surface 1 5 dB Near a large desktop or large reflecting surface 3 dB Use these settings in addition to one of the top five settings Adjusting the acoustic level rr gt On your KH 120 loudspeakers set the OUTPUT LEVEL switch 8 to 94 dB SPL and the INPUT A GAIN control 9 to 15 dB for 0 dBu 114 gt Play a broadband pink noise test signal that is set to 18 dBFS Europe or 20 dBFS U
33. xionsarmen Bedingungen bei 1 m Abstand durchgef hrt Vous trouverez ci apr s les courbes correspondant aux mesures acoustiques effectu es en chambre sourde une distance de 1 m tre du moniteur Las siguientes mediciones ac sticas se han realizado bajo condiciones de baja reflexi n a una distancia de 1 m KH210 I NEUMANN Free Field Response Freifeld Frequenzgang R ponse en Group Delay Gruppenlaufzeit Temps de propagation de champ libre Respuesta en frecuencia en campo libre groupe Retardo de grupo Sens 2 83V 1m Sens 2 83V Im EE ux OS II KH 210 NEUMANN Harmonic Distortion at 90 dB SPL Klirrfaktor bei 90 dB SPL Maximum SPL at 1 m 196 and 396 Maximaler SPL bei 1 m Distorsion harmonique 90 dB SPL Distorsi n arm nica total 1 96 und 3 96 Niveau SPL maximal 1 m 1 et 3 a 90 dB SPL SPL m ximo a 1 m 1 96 y 3 96 THD f 2 5 THD90 dB at 1m Max SPL KH120 TIEN 100 im Inn JE in Lu pe A d E la pp DT SS DS SS kHz d 0 2 0 5 Z 5 10 kHz KH 210 IH NEUMANN Acoustical Controls Akustikregler Effet des correcteurs de compensation acoustiques Regulador ac stico Freq Resp 1 IV KH 210 NEUMANN Cumulative Spectral Decay Zerfallsspektrum D croissance spectrale cumul e Ca da espectral acumulada WinWLS 2008 LE I Dk Ay Val Uu M usu I EI KR Tu eu Cu l
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