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The KH 420 from Neumann is a three-way active monitor designed for use as a mid-field or main monitor, and can be used free-standing or flush mounted into a wall. It is particularly well-suited for use in music, broadcast, and post production studios for tracking, mixing and mastering, and in multi-channel systems can be mixed freely with other loudspeakers in the range.
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.
Computer mechanically modeled three-way cabinet design using Low Resonance Integral Molding (LRIM) materials
In-house simulated magnetically shielded drivers
Alloy fabric dome tweeter with built-in grille
Fabric dome, neodymium magnet, midrange driver
Long throw bass driver with Extremely Linear Force Factor (ELFF) and flow optimized die cast basket
High-capacity flow-optimized bass reflex ports with pipe damped
Elliptical Mathematically Modeled Dispersion (MMD) waveguide, with wide horizontal and narrow vertical dispersion
Analog class AB amplifiers with large headroom and overheat limiting
Fast-acting independent thermo limiters for woofer, midrange dome and tweeter to protect the voice coils
Woofer soft clip and excursion limiters
Four-position bass, low-mid and treble acoustical controls and easy to use parametric equalizer
Wide range input gain and output level controls
Individual hand-alignment in final test
Fully documented extensive mounting hardware options (hardware sold separately)
In the Box
Neumann KH 420 - 3-Way Active Studio Monitor
AC Power Cables
One (1) Year Limited Warranty
Table of Contents
Frequency Response 26 Hz to 22 kHz, +/-3 dB free field 28 Hz to 20 kHz, +/-2 dB pass-band free field Self Generated Noise < 20 dB(A) level at 10 cm THD < 0.5 % at 95 dB SPL at 1 m, > 120 Hz SPL 116.4/122.4 dB maximum in full space/half space at 3% THD at 1 m (averaged between 100 Hz and 6 kHz) 109.9 dB maximum bass capability in half space at 3% THD at 1m (averaged between 50 Hz and 100 Hz) 109 dB(C) maximum short term with IEC-weighted noise (IEC 60286-5) at 1 m, in typical listening conditions 103 dB(C) maximum short term (full range) with music material at 2.3 m, in typical listening conditions (pair) 90/96 dB(C) maximum long term (full range) with pink noise at 2.3 m, in typical listening conditions (single/pair)
9 Hz; 18 dB/octave infrasonic filter frequency/slope XLR electronically balanced input 14 kOhms impedance, electrically balanced 0 dB to to15 dB input gain control (sensitivity) 94, 100, 108, 114 dB SPL output level control > 56 dB CMRR @ 100 Hz to 16 kHz +24 dBu maximum analog input level (18 dBu for analog delayed)
Class AB Amplifiers, Continuous (Peak) Output Power Bass: 295 W (330 W) Midrange: 130 W (140 W) Treble: 130 W (140 W) Controller Design Analog, active Crossover Frequencies: 570 Hz, 2 kHz Slope: 24 dB/octave EQ Bass: 0, -2.5, -5, -7.5 dB Mid: 0, -1.5, -3, -4.5 dB High: 1, 0, -1, -2 dB Parametric EQ Status: Switchable Gain: +4 to -12 dB Frequency: Bypass, 25 to 80 Hz, 50 to 160 Hz, 100 to 320 Hz Q: 1 to 8 Protection Circuitry Excursion limiter: Low Peak limiter: Low Thermo limiters: Low, Mid and High Overheat: Amplifiers Displays Power on: Neumann logo "White" Limit/clip: Neumann logo "Red"
Cabinet Painted wood and polyurethane, metallic anthracite finish Aluminum electronics panel, black Baffle Optional removable metal grille Temperature Operating: +50° to +104° F (+10 to +40° C), <90% RH non-condensing Transport/storage: −13° to 158° F (−25° to +70° C) ,<90% RH non-condensing Magnetically Shielded Drivers Woofer: 10" (265 mm) Midrange: 3" (76 mm) Tweeter: 1" (25 mm) Cabinet Design: Vented, dual ports on front panel Mounting points: 8 x M5 on rear
100~240 VAC, 50/60 Hz Idle power consumption: 60 W Full output power consumption: 800 W
13 x 17.5 x 25.4" (330 x 444 x 645 mm) External volume: 3.3 ft3 (93 liters)