KH 420
Studio Monitor
From Neumann:
The KH 420 is designed for a working distance of 1.5 to 3 m (5’ to 9’). It handles this space effortlessly thanks to great power reserves and precisely concentrated dispersion. Even in diverse acoustical environments the KH 420 remains neutral and clear in every detail down to the subtlest nuances. No subtlety is lost; every sound element can be localized.
The KH 420 is a three-way tri-amplified monitor with thermally protected Class AB amplifiers (330 W and two times 140 W). Just like the drivers, its Mathematically Modeled Dispersion™ (MMD™) waveguide is engineered for optimum precision. Sound distributed in a horizontally precise manner ensures flexibility in the listening position; the narrower vertical dispersion reduces the negative effects of nearby reflections, for example from a desk or mixing console. The dispersion of the KH 420 is deliberately designed to be narrower, to guarantee reference sound at longer working distances.
The KH 420 is designed for midfield applications and as main monitor in project, music, broadcast and post-production studios for recording, mixing and mastering. And in a multi-channel system, it can also be freely combined with all other Neumann studio monitors.
Specs
- Free field frequency response ±6 dB
- 25 Hz … 22 kHz
- Free field frequency response ±3 dB
- 26 Hz … 22 kHz
- Pass band free field frequency response
- 28 Hz … 20 kHz, ±2 dB
- Free field frequency linearity deviation between 100 Hz and 10 kHz
- ± 1.2 dB
- Reproduction accuracy between 100 Hz and 10 kHz, 100%, 80%, 50% of loudspeakers produced
- ±0.78; ±0.36; ±0.22 dB
- Self-generated noise at 10 cm (with input gain set to 100 dB SPL for 0 dBu)
- <20 dB(A) SPL
- Sine wave output with a THD < 0.5 % at 1 m in half space
- 95 dB SPL (>100 Hz)
- Max. SPL calc. in half space at 3% THD at 1m (averaged between 100 Hz and 6 kHz)
- 122.4 dB SPL
- Max. SPL in full space at 3% THD at 1m (averaged between 100 Hz and 6 kHz)
- 116.4 dB SPL
- Bass capability, Max. SPL in half space at 3% THD at 1m (averaged between 50 Hz and 100 Hz)
- 109.9 dB SPL
- Bass capability, Max. SPL in half space at 3% THD at 1m/pair (averaged between 50 Hz and 100 Hz)
- 114,9 dB SPL
- Max system level in half space at 1 m/pair incl 1 x subwoofer (KH 750, KH810, KH870)
- 105,0; 110,7; 116,7
- Max system level in half space at 1 m/pair incl 2 x subwoofer (KH 750, KH810, KH870)
- 111,0; 116,7; 122,7
- Max. short term SPL with IEC-weighted noise (IEC 60268-5) 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 / full range)
- 103 dB(C) SPL
- Max. short term SPL with music material at 2.3 m, in typical listening conditions (pair with subwoofer)
- 109 dB(C) SPL
- Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair full range)
- 90 / 96 dB(C) SPL
- Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair with subwoofer)
- 90 / 96 dB(C) SPL
- Dolby DARDT. max SPL fullrange
- 117 dB
- Dolby DARDT. max SPL bass managed
- 122 dB
- Recommended listening distance
- 1.5 … 3.0 m (5'… 9')
- Feasible listening distance
- 1.25 … 11.0 m (4'… 33')
- Acoustical principle
- Bassreflex, Ports at the front
- Analog input(s)
- XLR: analog electronically balanced
- Analog input impedance
- >14k Ohms
- Max. input level
- +24 dBu (DIM 1: 18 dBu for analog delayed)
- Digital input(s)
- BNC (75 Ω): AES3; S/P-DIF
- Digital output(s)
- BNC (75 Ω): AES3
- Digital converter, resolution; design
- 16 … 24-bit DAC; Δ∑
- Digital converter, sampling rate
- 22.05; 24; 32; 44.1; 48; 64; 88.2; 96; 176.4; 192 kHz
- Digital internal sampling rate
- 96 kHz
- Dynamic range A-D-A (Converter)
- >116 dB(A)
- Dynamic range D-A
- >123 dB(A)
- Digital sensitivity
- -18 dBFS = 100 dB SPL at 1 m
- Latency ADA / DA
- 0.22 … 1.85 ms (digital A, B or A+B); 0.54 ms (analog delayed)
- Delay, user adjustable delay range
- 0 … 409.5 ms
- Delay, resolution, time; distance
- 0.1 ms; 3.44 cm (1 3/8”)
- Delay, Max. frames Audio-video synchronisation (lip sync)
- 10.2 (40 ms) frames; 12.3 (33 ms) frames
- Delay, Time-of-flight maximum distance
- 140.1 m (462' 2")
- Input gain control (sensitivity)
- 0 dB ... -15 dB
- Output level control (output level in 1 m based on 0 dBu input level)
- 94; 100; 108; 114 dB SPL
- Equalization, bass
- 0; -2.5; -5; -7.5 dB
- Equalization, treble
- +1; 0; -1; -2 dB
- Crossover frequency
- 570 Hz and 2.0 kHz
- Protection circuitry
- Independent thermo limiters for woofer, midrange dome and tweeter. Woofer soft clip and excursion limiters. Amplifier overheat.
- Output power woofer amplifier (THD+N with limiter deactivated, 10%)
- 330 W
- Output power tweeter amplifier (THD+N with limiter deactivated, 10%)
- 140 W
- Woofer
- 265 mm (10") with magnetic shielding
- Tweeter
- 25 mm (1") with protecting black metal grille
- Product dimensions (height x width x depth)
- 645 x 330 x 444 mm (25 3/8" x 13" x 17 1/2")
- Product weight
- 35.0 kg (77 lbs 3 oz) (+ 100 g (3 oz) with DIM 1 fitted)
- Finish
- anthracite
- Included
- 1 x KH 420 Studio Monitor, 3 x Mains cables (European, UK and US version), 1 x Operating manual, 1 x Supplement “Getting Started Quickly”
Source: Neumann KH 420 product page