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Neumann.Berlin KH 420, Operating Manual

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KH 420  |  

III

Harmonic Distortion at 95 dB SPL | Klirrfaktor bei 95 dB SPL 

Distorsion harmonique à 95 dB SPL | Distorsión armónica total 

a 95 dB SPL

Harmonic Distortion at 100 dB SPL | Klirrfaktor bei 100 

dB SPL | Distorsion harmonique à 100 dB SPL | Distorsión 

armónica total a 100 dB SPL

Summary of Contents for KH 420

Page 1: ...georg neumann gmbh Leipziger str 112 10117 berlin germany tel 49 0 30 417724 0 fax 50 headoffice neumann com www neumann com KH 420 Active Studio Monitor Operating Manual...

Page 2: ......

Page 3: ...0 17 Switching the KH 420 on off 17 Adjusting the frequency response 17 Adjusting the acoustical level 19 Compensating for video delay lip sync 20 Compensating for listening distance differences time...

Page 4: ...ng 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 per...

Page 5: ...s 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...

Page 6: ...tronic simulation and measure ment technologies to ensure the most accurate sound reproduction possible The KH 420 is designed for use as mid field and main monitor It can be used as a front louds pea...

Page 7: ...iver 4 Rotatable waveguide 5 Bass driver 6 Woofer ring 7 Bass reflex ports You can adjust the brightness of the Neumann logo For more information refer to page 22 When installing a Remote Electronics...

Page 8: ...6 KH 420 9 8 8 8 8 8 8 9 8 8 8 Threaded inserts for mounting hardware Remove inserted plastic plugs before attaching mounting hardware 9 Accelerated Heat Tunneling cooling fins AHT EN...

Page 9: ...DIM 1 D D D D D D D D D D D D D D D D D D D D D D D D D D 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 M M M M M M M M M M M M M M M M M M M M M M M I I I I I I I I I I I I I 0 DISPLAY BRIGHTNESS switch Dim...

Page 10: ...t is possible to remove the electronics panel and locate it remotely using the REK 4 accessory and Cable Packs CP nn For information on installation please refer to the supplied Getting Started Quickl...

Page 11: ...orientation see table above and position it back into the front panel cut out To avoid rattles the driver cables are tightly sandwiched bet ween the rear of the waveguide and the damping material X En...

Page 12: ...eaker setup symmetrically in the listening room X X Arrange all acoustically relevant surfaces and objects symmetrically on either side of the listening axis of the room left right X X Minimize the so...

Page 13: ...Right X X Copy the diagram Installation angles that can be found at the end of this operating manual X X Place the diagram at the listening position or center of the listening area X X Using a tape me...

Page 14: ...m 1 3 8 any small remaining time of flight adjustment should be made by moving the loudspeaker cabinet DIM 1 DIM 1 DIM 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 M M M M M M M M M M M M M M M...

Page 15: ...ght from the listening position to the bass midrange and tweeter drivers Connecting audio signals X X Always use good quality cables with the correct impedance and appropriate termination to avoid sig...

Page 16: ...cket XLR I of the DIM 1 X Connect the digital AES3 or S P DIF output signal of your audio source to the AES3 INPUT socket I or J of the DIM 1 See figure below The DIM 1 only supports non encoded AES3...

Page 17: ...t BNC K T pieces are not required see figure below X X Make an appropriate setting DIGITAL A or DIGITAL B on the SIGNAL SELECT rotary switch L End of the line external termination is not required as t...

Page 18: ...when an analog signal is connected to the ANALOG INPUT socket H therefore the DIM 1 cannot be used as an analog to digital converter Delay is not added to the digital output so any delay required on...

Page 19: ...ditions 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 co...

Page 20: ...a wide bump 2 6 dB high between 100 and 300 Hz Reflections from nearby bounda ries walls floor ceiling cause constructive and destructive interference Strong room resonances are audible and should be...

Page 21: ...cal controls This is particularly true when setting the parametric equalizer Adjusting the acoustical level X X On your KH 420 loudspeakers set the OUTPUT LEVEL switch A to the lowest possible value o...

Page 22: ...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 delay the audio signal of the KH 420 can be delayed by up to 4...

Page 23: ...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 setti...

Page 24: ...e DISPLAY BRIGHTNESS switch 0 is set to OFF Cleaning and maintaining the KH 420 CAUTION Damage to the product caused by liquids Liquids entering the product can cause a short circuit in the electronic...

Page 25: ...m in typical listening conditions 109 dB C SPL Max short term SPL with music material at 2 3 m in typical listening conditions pair 102 dB C SPL full range 109 dB C SPL with subwoofer Max long term S...

Page 26: ...3 at 33 ms frame Minimum delay resolution time distance 0 1 ms 3 4 cm 1 3 8 Latency D A with delay 0 ms 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...

Page 27: ...rt B Safety UL 60065 Canada EMC ICES 003 CAN ICES 3 B NMB 3 B Safety CAN CSA C22 2 No 60065 Acoustical measurements block diagram and pin assignment Additional technical data such as acoustical measur...

Page 28: ...g Neumann GmbH Mathematically Modeled Dispersion and MMD Accelerated Heat Tunneling and AHT Other company product or service names mentioned in this operating manual may be the trademarks service mark...

Page 29: ...kHz Delay ADC Analog Digital A Digital B all available with and without delay 0 1 ms 1 6 ms 25 6 ms Signal Select 100 60 30 0 Power Amplifiers DIM 1 only XLR AES3 Input Parametric 4 12 0ff 25 80 50 1...

Page 30: ...Response Freifeld Frequenzgang R ponse en champ libre Respuesta en frecuencia en campo libre Harmonic Distortion at 90 dB SPL Klirrfaktor bei 90 dB SPL Distorsion harmonique 90 dB SPL Distorsi n arm n...

Page 31: ...dB SPL Klirrfaktor bei 95 dB SPL Distorsion harmonique 95 dB SPL Distorsi n arm nica total a 95 dB SPL Harmonic Distortion at 100 dB SPL Klirrfaktor bei 100 dB SPL Distorsion harmonique 100 dB SPL Di...

Page 32: ...H 420 Group Delay Gruppenlaufzeit Temps de propagation de groupe Retardo de grupo Maximum SPL at 1 m 1 3 and 10 Maximaler SPL bei 1 m 1 3 und 10 Niveau SPL maximal 1 m 1 3 et 10 SPL m ximo a 1 m 1 3 y...

Page 33: ...420 V Acoustical Controls Akustikregler Effet des correcteurs de compensation acoustiques Regulador ac stico Parametric Equalizer Parametrischer Equalizer galiseur param trique Ecualizador param tric...

Page 34: ...VI KH 420 Cumulative Spectral Decay Zerfallsspektrum D croissance spectrale cumul e Ca da espectral acumulada...

Page 35: ...srichtung Directivit horizontale Orientation verticale du coffret Directividad horizontal Orientaci n vertical del gabinete 24 21 21 18 18 15 15 12 12 9 9 6 6 3 3 0 0 3 90 60 30 30 60 90 Angle 126 160...

Page 36: ...85 1000 1274 1567 1995 2541 3126 3981 5070 6237 7943 10116 12445 15849 20000 Frequency Hz 0 Vertical Directivity Plot Vertical Cabinet Orientation Vertikales Abstrahlverhalten Vertikale Geh useausrich...

Page 37: ...srichtung Directivit horizontale Orientation horizontale du coffret Directividad horizontal Orientaci n horizontal del gabinete 24 21 21 18 18 15 15 12 12 9 9 6 6 3 3 0 0 3 90 60 30 30 60 90 Angle 126...

Page 38: ...0 1274 1567 1995 2541 3126 3981 5070 6237 7943 10116 12445 15849 20000 Frequency Hz 0 Vertical Directivity Plot Horizontal Cabinet Orientation Vertikales Abstrahlverhalten Horizontale Geh useausrichtu...

Page 39: ...ation angles Aufstellwinkel Angles d installation ngulos de colocaci n 0 0 1 11 10 0 1 18 80 0 9 90 0 1 15 50 0 3 30 0 22 5 22 5 6 60 0 1 12 20 0 1 10 00 0 1 11 10 0 9 90 0 1 15 50 0 3 30 0 6 60 0 1 1...

Page 40: ...4 8 1 651 5 5 0 1 0 1 4 102 4 35 226 115 7 2 6 3 1 6 4 2 202 7 3 0 2 0 2 5 128 0 44 032 144 6 3 2 3 8 8 0 2 752 9 0 0 2 0 2 6 153 6 52 838 173 4 3 8 4 6 9 6 3 302 10 10 0 2 0 3 7 179 2 61 645 202 3 4...

Page 41: ...0 Hz 60 Hz 0 0 0 0 000 0 0 0 0 0 0 1 0 1 0 034 0 1 0 0 0 0 2 0 2 0 069 0 3 0 0 0 0 3 0 3 0 103 0 4 0 0 0 0 4 0 4 0 138 0 5 0 0 0 0 5 0 5 0 172 0 7 0 0 0 0 6 0 6 0 206 0 8 0 0 0 0 7 0 7 0 241 0 9 0 0 0...

Page 42: ...04 14 554623 A01...

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