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Neumann KH420

Active 3-way Midfield Monitor


Neumann KH420
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 has been designed for use as a mid-field or main monitor. It is particularly 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, and, in multichannel systems, can be mixed freely with other loudspeakers in the range.

Main Features:
• 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
• New 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
• Light weight 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

List Price: $5,999.00
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