KH 420

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

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