- 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