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Neumann KH 420
10" 3-Way Active Midfield Studio Monitor

OUR PART #:  KH420

The Neumann KH 420 features in-house computer-optimized drivers, a waveguide featuring Mathematically Modeled Dispersion™ (MMD™), flexible acoustical controls...
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Neumann KH 420 - Rear View w/o Optional DIM1
Neumann KH 420 - Rear View w/Optional DIM1
Neumann KH 420 - Front View

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Our Price: $4,899.95

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Neumann KH 420
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The Neumann KH 420 features in-house computer-optimized drivers, a waveguide featuring Mathematically Modeled Dispersion™ (MMD™), flexible acoustical controls, various input options, and an extensive mounting hardware range that allow it to be used in diverse acoustical conditions with any source equipment and in a wide variety of physical locations.

The KH 420 is designed for use as a mid-field or main monitor. It is well-suited for use in music, broadcast, and post-production studios for tracking, mixing, and mastering. The KH 420 can be used free-standing or flush mounted into a wall. In multi-channel systems it can be mixed freely with other loudspeakers in the range.

Includes:

  • 1x KH 420 3-Way Active Midfield Studio Monitor
  • 3x Power cables (Euro, UK, USA)
  • 1x Operating manual
  • 1x Getting Started Quickly Guide

Neumann KH 420 Active Midfield Studio Monitor Features:

  • Computer mechanically modeled 3-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
  • In-house simulated magnetically shielded drivers
    • Latest modeling techniques used to minimize non-linear (intermodulation) distortion
    • For safe use near magnetic storage media
  • Powerful alloy fabric dome tweeter with built-in grille
    • Low-distortion high-frequency reproduction
    • Robust against accidental physical damage
  • Fabric dome, neodymium magnet, midrange driver
    • Dedicated driver reproduces important midrange frequencies, which is especially important for speech and vocals
    • Lightweight dome has better transient response and less breakup modes than cone designs
    • High-power magnet reduces harmonic and intermodulation distortion
  • Long throw bass driver with Extremely Linear Force Factor™ (ELFF™) and flow optimized die-cast basket
    • Linear pistonic motor gives a very low harmonic distortion even at high excursions
    • Reduced air noise and improved rocking modes
  • High-capacity flow-optimized bass reflex ports with pipe damped
    • Reduced compression at high output levels
    • No coloration from organ pipe resonance
  • Elliptical Mathematically Modeled Dispersion™ (MMD™) waveguide, with wide horizontal and narrow vertical dispersion
    • Smoother off-axis response
    • More forgiving of diverse acoustical environments
    • Freedom of movement across the mixing console
    • Reduces reflections off the mixing console
  • Two-color dimmable Neumann logo
    • Displays operation status and activation of the extensive protection system
    • Dimmable for low lighting level conditions or behind the screen applications
  • Electronics panel with generously dimensioned integrated Accelerated Heat Tunneling™ (AHT™) heat sink
    • Improved heat dissipation leading to increased electronics reliability
  • Powerful analog class AB amplifiers with large headroom and overheat limiting
    • Improved transient response, reliability Assurance of safety
  • Fast-acting independent thermo limiters for woofer, midrange dome and tweeter to protect the voice coils. Woofer soft clip and excursion limiters.
    • Allows extraction of the maximum performance from the system without reducing reliability
  • Production consistency due to individual hand-alignment in final test
    • Any KH 420 is "pair-matched" to any other KH 420
  • 4-position bass, low-mid and treble acoustical controls and easy to use parametric equalizer
    • More control in diverse acoustical environments
    • Repeatable acoustical settings after moving loudspeakers
  • Wide range input gain and output level controls
    • Easier interfacing with signal sources
  • Ground lift
    • Reduced noise in electrically noisy environments and over-comes ground loops
  • Optional (DIM 1) digital XLR/BNC inputs and buffered BNC output
    • For flexible and trouble-free digital interconnectivity (24 bit, 192 kHz, AES3 and S/P-DIF)
  • Optional (DIM 1) lipsync delay (0 … 10/12 frames)
    • To align audio and video signals
  • Optional (DIM 1) time-of-flight delay (0 … 400 ms)
    • To compensate for listening distance differences
  • 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
  • Fully documented extensive mounting hardware options
    • More flexibility in mounting cabinets in more diverse locations and backwards compatibility with previous models
    • Mechanically compatible with O 410, KH 870 and O 870
    • Easy advanced planning for installations
  • Optional robust metal grille
    • Can be used, if required, to protect the drivers
  • Optional transportation accessories
    • Robust wooden flight case for transport and storage

Neumann KH 420 Active Midfield Studio Monitor Specifications:

  • Acoustics:
    • -3 dB free field frequency response: 26 Hz - 22 kHz, ± 3 dB
    • Pass band free field frequency response: 28 Hz - 20 kHz, ± 2 dB
    • Self-generated noise level at 10 cm: < 20 dB(A)
    • Total harmonic distortion < 0.5 % at 95 dB SPL at 1 m: > 120 Hz
    • Max. SPL in full space / calc. in half space at 3% THD at 1m: 116.4 / 122.4 dB SPL (averaged between 100 Hz and 6 kHz)
    • Bass capability: Max. SPL in half space at 3% THD at 1m: 109.9 dB SPL (averaged between 50 Hz and 100 Hz)
    • Max. short term SPL with IEC-weighted noise (IEC 60286-5) at 1 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):
      • 103 dB(C) SPL (full range)
      • 109 dB(C) SPL (with subwoofer)
    • Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single/pair):
      • 90 / 96 dB(C) SPL (full range)
      • 90 / 96 dB(C) SPL (with subwoofer)
  • Analog Input:
    • Infrasonic filter: frequency/slope: 9 Hz; 18 dB/oct
    • Input: XLR, electronically balanced
    • Impedance, electrically balanced: 14k Ohms
    • Input gain control (sensitivity): 0 dB to -15 dB
    • Output level control: 94, 100, 108, 114 dB SPL
    • CMRR: > 56 dB @ 100 - 16 kHz
    • Max. analog input level: +24 dBu (18 dBu for analog delayed)
  • Digital Input (when optional DIM 1 accessory is fitted):
    • Format BNC: AES3, S/P-DIF
    • Impedance BNC, unbalanced: 75 Ohms (input/output)
    • Format XLR: AES3
    • Impedance XLR, balanced: 110 Ohms (input)
    • Input switching: Analog, Digital A, Digital B, Digital A+B (all available with and without delay)
    • Digital converter: resolution, design: 16 … 24-bit DAC, [Delta Sigma type]
    • Digital converter: sampling rate: 22.05, 24, 32, 44.1, 48, 64, 88.2, 96, 176.4, 192 kHz
    • Digital sensitivity: -18 dBFS = 100 dB SPL at 1 m
    • A-D-A, D-A dynamic range: >116 dB(A), >123 dB(A)
    • THD+N: analog delayed, digital: < -104 dB, < -106 dB
    • Maximum Audio-Video/lip sync and Time-of-Flight delay: 409.5 ms/ 140.87 m (462' 2")
    • Audio-Video/lip sync max. frames: 10.2 (40 ms) frames, 12.3 (33 ms) frames
    • Resolution: time/distance: 0.1 ms / 3.4 cm (1 3/8”)
    • Latency D-A (A-D-A): 0.22 - 1.85 ms (0.54 ms)
    • Delay setting acknowledgement: Neumann logo "Red" 1 flash
    • Delay setting acknowledgement: Neumann logo "Red" continuous flashes
    • Mains Power Supply, voltage; frequency: 100-240 V~; 50/60 Hz
  • Electronics:
    • Bass / Midrange / Treble Class AB amplifiers, cont. (peak) output power*: 295 W (330 W) / 130 W (140 W) / 130 W (140 W)
      *THD+N <0.1% with limiter deactivated
    • Controller design: Analog, active
    • Crossover - Frequencies: 570 Hz / 2 kHz
    • Crossover - Slope: 24 dB/oct
    • Equalization:
      • Bass: 0; -2.5; -5; -7.5 dB
      • Mid: 0; -1.5; -3; -4.5 dB
      • High: 1; 0; -1; -2 dB
    • Parametric Equalizer: Bypassable
    • Parametric Equalizer - Gain: +4 ... -12 dB
    • Parametric Equalizer - Frequency: Bypass, 25 ... 80 Hz, 50 ... 160 Hz, 100 ... 320 Hz
    • Parametric Equalizer - Q: 1 ... 8
    • Protection circuitry:
      • Excursion limiter: Low
      • Peak limiter: Low
      • Thermo limiters: Low, Mid and High
      • Overheat: Amplifiers
    • Displays, indicators - power on: Neumann logo "White"
    • Displays, indicators - limit / clip: Neumann logo "Red"
    • Mains Power Supply, voltage; frequency: 100-240 V~, 50/60 Hz
    • Power consumption - idle: 60 W (+5 W when DIM 1 fitted)
    • Power consumption - full output: 800 W
  • Mechanics:
    • Cabinet surface finish, color: Painted wood and polyurethane, metallic anthracite. Aluminum electronics panel, Black.
    • Baffle cover: Optional removable metal grille
    • Operating conditions: +10° C to +40° C (+50° F to +104° F), <90% RH, non-condensing
    • Transport/storage condition: -25° C to +70° C (-13° F to 158° F), <90% RH, non-condensing
    • Drivers: Magnetically shielded
    • Woofer: 10" (265 mm)
    • Midrange: 3" (76 mm)
    • Tweeter: 1" (25 mm)
    • Cabinet design: Vented, dual ports on front panel
    • Mounting points: 8x M5 on rear
    • Dimensions: 25-3/8" H x 13" W x 17-1/2" D (645 x 330 x 444 mm)
    • External volume: 93 liters
    • Weight: 77 lbs, 3 oz. (35 kg), + 3 oz. (100 g) when DIM 1 is fitted
    • Packed Dimensions: 23-1/4" H x 15" W x 14-1/8" D (775 x 610 x 590 mm)
    • Packed Weight and cube: 90 lbs, 6 oz. (41 kg), 0.279 mÂł
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