Neumann KH 420 G 10+3+1" Aktif Monitor

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The KH 420 is designed for a working distance of 1.5 to 3 m (5’ to 9’). It handles this space effortlessly thanks to great power reserves and precisely concentrated dispersion. Even in diverse acoustical environments the KH 420 remains neutral and clear in every detail down to the subtlest nuances. No subtlety is lost; every sound element can be localized.

 

The KH 420 is a three-way tri-amplified monitor with thermally protected Class AB amplifiers (330 W and two times 140 W). Just like the drivers, its Mathematically Modeled Dispersion™ (MMD™) waveguide is engineered for optimum precision. Sound distributed in a horizontally precise manner ensures flexibility in the listening position; the narrower vertical dispersion reduces the negative effects of nearby reflections, for example from a desk or mixing console. The dispersion of the KH 420 is deliberately designed to be narrower, to guarantee reference sound at longer working distances.

Best working environment: Close to professional ears

The KH 420 is designed for midfield applications and as main monitor in project, music, broadcast and post-production studios for recording, mixing and mastering. And in a multi-channel system, it can also be freely combined with all other Neumann studio monitors.

Ports and high dynamics: No longer a contradiction

With its tri-channel amplifiers the KH 420 also realizes sound pressures of up to 122.4 dB. And it thereby retains high-resolution and neutral representation across the entire frequency response. This also includes an exceptional bass response down to 26 Hz. Despite using ports, there is no “overhang” or audible resonance in the low frequency range and the transient response is precisely controlled at all times.

The computer modeled chassis is constructed of LRIM™ materials which eliminates standing wave resonances and suppresses intermodulation distortion, especially in the midrange.

For demanding treble, our own specially developed, powerful alloy fabric dome ensures distortion-free reproduction. The fabric dome captures the midrange with utmost precision. Its ultralight material and the powerful neodymium magnet enable a significantly better transient response with considerably less distortion than comparable midrange drivers.

Digital input and delay option

The Digital Input Module DIM 1 expands the loudspeaker electronics by a digital XLR input, a digital BNC input and a digital BNC output (192 kHz/24 Bit) for flexible digital signal links. With the delay function (adjustment range 0 - 400 ms) of the DIM 1, the audio signal can be delayed to ensure audio-visual synchronization (lip sync). In addition, the high resolution of the delays (0.1 ms) allows equalization of the propagation delays. The delay can be added to both inputs (digital and analog). The KH 420 can be retrofitted with a DIM 1.

The KH 750 DSP subwoofer

In addition to its outstanding acoustic characteristics this DSP-based subwoofer not only offers excellent acoustic properties, but - in combination with the Neumann.Control iPad® app - it also provides the possibility of adapting a KH 420 stereo pair to the room using the patented "Guided Alignment“. Furthermore the entire stereo system can be controlled via the app. Detailed information about all additional features can be found here.

Hundreds of good reasons from the Neumann philosophy

KH 420 ayrıca Neumann'ın monitör hoparlörleri felsefesine uygun şekilde geliştirildi. Her bileşen, her şekil, her sinyal ve her dalga hareketi bu felsefenin bir sonucudur. Sebepsiz bir form veya bileşen yoktur. KH 420'de, hepsi son derece saf ve nötr sesi temsil eden yüzlerce somut neden vardır. Bunlar, örneğin kenar kırınımını azaltan mahfazanın kavislerini içerir. Ayrıca, en yüksek ses zirvelerinde bile harmonik bozulmalara yol açmayan bas sürücüsünün pistonik çıkışı da dahildir. Bu nedenlerden bazıları KH 420'de açıkça görülüyor. Diğerleri Neumann kendine saklamayı tercih ediyor. Ancak birlikte, her biri duyulabilir - dünyanın her yerindeki hem büyük hem de küçük stüdyolardaki ses profesyonelleri buna tanıklık edebilir.burada .

 

(1)
Alaşımlı kumaş kubbeye ve sağlam metal ızgaraya sahip kurum içi simüle edilmiş tweeter

  • Doğrusal olmayan (harmonik ve intermodülasyon) distorsiyonu en aza indirmek için kullanılan en son modelleme teknikleri
  • Düşük distorsiyonlu yüksek frekans üretimi
  • Izgara mekanik hasara karşı korur

(2)
Dönebilen eliptik Matematiksel Olarak Modellenmiş Dispersiyon ™ (MMD ™) dalga kılavuzu

  • Eksen dışı daha yumuşak yanıt
  • Çeşitli akustik ortamlar için daha bağışlayıcı

Geniş yatay dağılım

  • Miks konsolunda hareket özgürlüğü

Dar dikey dağılım

  • Karıştırma konsolundan yansımaları azaltır

(3)
İki renkli + kısılabilir Neumann logosu

  • Kapsamlı koruma sisteminin çalışma durumunu ve aktivasyonunu gösterir
  • Düşük aydınlatma seviyesi koşulları için veya ekran uygulamalarının arkasında kısılabilir

(4)
In-house simulated, neodymium magnet, fabric dome, midrange driver with optimized low stray magnetic field

  • Dedicated driver reproduces important midrange frequencies, which is especially important for speech and vocals
  • Latest modeling techniques used to minimize non-linear (harmonic and intermodulation) distortion
  • Low-distortion midrange reproduction
  • Light-weight dome has better transient response and less breakup modes than cone designs
  • High power magnet reduces harmonic and intermodulation distortion

(5)
In-house modelled long-throw composite sandwich cone bass driver with Extremely Linear Force Factor™ (ELFF™), magnetic shielding and flow optimized die cast basket

  • Damping of break up modes brings low distortion at high sound levels
  • Linear pistonic motor gives a very low harmonic distortion even at high excursions
  • Reduced air noise and improved rocking modes

(6)
Large high-capacity flow-optimized bass reflex ports with pipe resonance damping

  • Fast bass transient response
  • Reduced bass compression at high output levels
  • No coloration from organ pipe resonance
  • Can be flush mounted

(7)
Computer mechanically modeled three-way cabinet design using Low resonance Integral Molding™ (LRIM™) materials

  • No standing wave resonances inside cabinet
  • Reduced intermodulation distortion in midrange for a more transparent sound
  • Reduced cabinet resonances

(8)
4-position bass, low-mid and treble acoustical controls

  • More control in diverse acoustical environments
  • Repeatable acoustical settings after moving loudspeakers

(9)
Parametric equalizer

  • More control in diverse acoustical environments
  • Bypassable if not needed
  • Three frequency ranges gives very fine control of equalization

(10)
Wide range input gain and output level controls

  • Easier interfacing with signal sources

(11)
Display dimmer

  • For low lighting level conditions or behind the screen applications

(12)
XLR electronically balanced analogue input with ground lift

  • Standard interfacing to professional equipment
  • Reduced noise in electrically noisy environments and over-comes ground loops

(13)
Universal dual (bass and mid/treble) switched-mode power supplies (100 … 240 V)

  • One version works in any country and robust to poor quality mains supply
  • Dual supply improves transient response

(14)
Fully documented extensive mounting hardware range

  • More flexibility in mounting cabinets in more diverse locations and backwards compatible to previous products
  • Easy advanced planning for installations

(15)
Electronics panel with generously dimensioned integrated Accelerated Heat Tunneling™ (AHT™) heat sink

  • Improved heat dissipation leading to increased electronics reliability

Installation flexibility

  • Remoteable electronics (REK 4) for ease of installation, less cabling, and convenience of use

(16)
Powerful amplifiers with large headroom and overheat limiting

  • Improved transient response
  • Assured reliability and safety

Separate fast acting thermo limiters for woofer, midrange and tweeter to protect the voice coils and power amplifiers

  • Woofer soft clip and excursion limiters
  • Increases system reliability
  • Allows extraction of the maximum performance from the system

More Features

Production consistency due to individual hand alignment in final testing

  • Any KH 420 is “pair matched” to any other KH 420

Optional robust metal grille

  • Can be used, if required, to protect the drivers

 

Free field frequency response ±6 dB25 Hz … 22 kHz
Free field frequency response ±3 dB26 Hz … 22 kHz
Free field frequency linearity deviation between 100 Hz and 10 kHz± 1.2 dB
Reproduction accuracy between 100 Hz and 10 kHz: 100%, 80%, 50% of loudspeakers produced±0.78; ±0.36; ±0.22 dB
Self-generated noise at 10 cm (with input gain set to 100 dB SPL for 0 dBu)<20 dB(A) SPL
Sine wave output with a THD < 0.5 % at 1 m in half space95 dB SPL (>100 Hz)
Max. SPL calc. in half space at 3% THD at 1m (averaged between 100 Hz and 6 kHz)122.4 dB SPL
Max. SPL in full space at 3% THD at 1m (averaged between 100 Hz and 6 kHz)116.4 dB SPL
Bass capability: Max. SPL in half space at 3% THD at 1m (averaged between 50 Hz and 100 Hz)109.9 dB SPL
Max. short term SPL with IEC-weighted noise (IEC 60268-5) at 1 m, in typical listening conditions109 dB(C) SPL
Max. short term SPL with music material at 2.3 m in typical listening conditions (pair / full range)103 dB(C) SPL
Max. short term SPL with music material at 2.3 m, in typical listening conditions (pair with subwoofer)109 dB(C) SPL
Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair full range)90 / 96 dB(C) SPL
Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair with subwoofer)90 / 96 dB(C) SPL
Analog input(s)XLR: analog electronically balanced
Analog input impedance>14k Ohms
Max. input level+24 dBu (DIM 1: 18 dBu for analog delayed)
Common mode rejection ratio (CMRR)>56 dB @ 15kHz
Input gain control (sensitivity)0 dB ... -15 dB
Output level control (output level in 1 m based on 0 dBu input level)94; 100; 108; 114 dB SPL
Controller designAnalog; active
Crossover frequency570 Hz and 2.0 kHz
Crossover slope24 dB/oct; 4th order
Equalization: Bass0; -2.5; -5; -7.5 dB
Equalization: Mid0; -1.5; -3; -4.5 dB
Equalization: Treble+1; 0; -1; -2 dB
Equalization: Parametric EQ: Gain'+4 ... -12 dB
Equalization: Parametric EQ: FrequencyBypass, 25 ... 80 Hz; 50 ... 160 Hz; 100 ... 320 Hz
Equalization: Parametric EQ: Q1 ... 8
Protection circuitryIndependent thermo limiters for woofer, midrange dome and tweeter. Woofer soft clip and excursion limiters. Amplifier overheat.
Infrasonic filter: frequency; slope9 Hz; 18 dB/oct.
Display: On; Normal OperationNeumann logo “White”
Display: Limit / Clip / Errors / Protection /Boot Mute / Shut Down MuteNeumann logo “Red”
Display BrightnessWhite: 100%/60%/30%/off; Red: 100%/60%/30%
Output power woofer amplifier (THD+N with limiter deactivated: 10%)330 W
Output power midrange amplifier (THD+N with limiter deactivated: 10%)140 W
Output power tweeter amplifier (THD+N with limiter deactivated: 10%)140 W
Output power woofer amplifier (THD+N with limiter deactivated: 0.1%)295 W
Output power midrange amplifier (THD+N with limiter deactivated: 0.1%)130 W
Output power tweeter amplifier (THD+N with limiter deactivated: 0.1%)130 W
Mains Power Supply: input voltage; frequency100-240V; 50/60 Hz
Power consumption (230 V / 100 V): Idle60 W (+5W when DIM 1 fitted)
Power consumption (230 V / 100 V): Full output800 W
Cabinet materialWood cabinet, polyurethane waveguide, aluminum electronics panel
Cabinet surface finish; color (front / back)Painted; metallic anthracite (RAL 7021) / black (RAL 9005)
Operating conditions+10° C to +40° C (+50° F to +104° F); <90% RH, non-condensing
Transport/storage conditions-25° C to +70° C (-13° F to 158° F); <90% RH; non-condensing
Woofer265 mm (10") with magnetic shielding
Midrange75 mm (3") with magnetic shielding
Tweeter25 mm (1") with protecting black metal grille
Mounting points8 x M5 on rear panel
Product dimensions (height x width x depth)645 x 330 x 444 mm (25 3/8" x 13" x 17 1/2")
External net volume93 liters
Product weight35.0 kg (77 lbs 3 oz) (+ 100 g (3 oz) with DIM 1 fitted)
Cabinet weight when electronics remote located30.3 kg (66 lbs 13 oz) (+ 100 g (3 oz) with DIM 1 fitted)
Packed dimensions (height x width x depth), mm (inches)775 x 610 x 590 mm (30 1/2" x 15" x 14 1/8")
Packed weight41.0 kg (90 lbs 6 oz)
Packed cube0.279 m³

 

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