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HomepageMonitoringActive Monitors › Neumann KH 420
Neumann KH 420

The KH 420 has been designed for use as a mid-field or main monitor. Excellent for music, broadcast, and post production studios for tracking, mixing and mastering.

The KH 420 represents the result of using the latest techniques in acoustical, electronic and mechanical design to bring a new benchmark in audio reproduction quality. In-house computer optimized drivers, a waveguide featuring Mathematically Modeled Dispersion™ (MMD™), flexible acoustical controls, various input options, and an extensive mounting hardware range allow the KH 420 to be used in diverse acoustical conditions, with any source equipment, and in a wide variety of physical locations.
The KH 420 can be used free-standing or flush mounted into a wall, and, in multichannel systems, can be mixed freely with other loudspeakers in the range.
Features
  • Computer mechanically modeled three-way cabinet design using Low resonance Integral Molding (LRIM) materials
  • New in-house simulated magnetically shielded drivers
  • For safe use near magnetic storage media
  • Robust against accidental physical damage
  • Light weight dome has better transient response and less breakup modes than cone designs
  • High power magnet reduces harmonic and intermodulation distortion
  • Reduced air noise and improved rocking modes
  • No coloration from organ pipe resonance
  • More forgiving of diverse acoustical environments
  • Freedom of movement across the mixing console
  • Reduces reflections off the mixing console
  • Dimmable for low lighting level conditions or behind the screen applications
  • Repeatable acoustical settings after moving loudspeakers
  • Dual supply improves transient response
  • Mechanically compatible with O 410, KH 870 and O 870
  • Easy advanced planning for installations
  • Specifications
    Acoustics:
  • 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 (input/output)
  • Format XLR: AES3
  • Impedance XLR, balanced: 110 (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,
  • 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)
  • Controller design: Analog, active
  • Crossover - Frequencies: 570 Hz / 2 kHz
  • Crossover - Slope: 24 dB/oct
  • Equalization - Bass: 0; -2.5; -5; -7.5 dB
  • Equalization - Mid: 0; -1.5; -3; -4.5 dB
  • Equalization - 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

  • Other:
  • 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, colour: 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: 265 mm (10")
  • Midrange: 76 mm (3")
  • Tweeter: 25 mm (1")
  • Cabinet design: Vented, dual ports on front panel
  • Mounting points: 8 x M5 on rear
  • Product dimensions (height x width x depth), mm (inches): 645 x 330 x 444 mm (25 3/8" x 13" x 17 1/2")
  • External volume: 93 liters
  • Product Weight: 35 kg (77 lbs 3 oz) (+ 100 g (3 oz) when DIM 1 fitted)
  • Packed dimensions (height x width x depth), mm (inches): 775 x 610 x 590 mm (23 1/4" x 15" x 14 1/8")
  • Packed weight and cube: 41.0 kg (90 lbs 6 oz), 0.279 m³
  • Delivery includes: 1x KH 420, 3x Power cables (Euro, UK, USA), 1x Operating manual, 1x Getting Started Quickly Guide
  • Reviews
    Price *
    $6499.00
    $5399.00
    Free shipping in Canada. Conditions
    Additional information
    For more information about the KH 420, please visit the website of Neumann
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