KH 420
Three-way, tri-amplified midfield studio monitor with a 10" woofer, 3" class midrange dome and 1" tweeter in a waveguide. It targets project, music, broadcast and post-production studios mixing at 1.5–3 m listening distance.
- Three-way tri-amplified midfield monitor
- Amplifiers: 330 W woofer, 140 W midrange and tweeter
- 26 Hz–22 kHz (±3 dB) response
- Max SPL 122.4 dB at 1 m in half space
- Recommended listening distance 1.5–3 m
- Optional DIM 1 digital input and delay module
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The KH 420 is an active three-way midfield monitor with separate Class AB amplifiers for the woofer (330 W) and for the midrange and tweeter (140 W each). A 265 mm bass driver, a fabric-dome midrange driver and a 25 mm alloy fabric-dome tweeter in a rotatable elliptical waveguide cover the range from 26 Hz to 22 kHz (±3 dB). Dispersion is wide horizontally and narrower vertically, which limits reflections from a desk or console.
The cabinet is made from LRIM moulded material and uses front-facing bass reflex ports that can be flush mounted. Acoustic controls cover bass, low-mid and treble in four positions each, plus a parametric equaliser, input gain and output level controls, a dimmable status logo and protection circuits (thermal limiters, woofer soft clip and excursion limiting). Maximum output is 122.4 dB SPL per speaker in half space.
The analogue input is an electronically balanced XLR with ground lift. An optional DIM 1 module adds digital XLR and BNC inputs, a BNC output and a 0–409.5 ms delay for lip sync or distance compensation. The monitor can be aligned with a KH 750 DSP subwoofer and the MA 1 measurement microphone, and accepts a range of mounting accessories and the REK 4 remote electronics kit.
Vidéo
Spécifications
- Marque
- Neumann
- Modèle
- KH 420
- Catégorie
- Studio › Enceintes de monitoring
Acoustics
- Acoustical principle
- Bassreflex, ports at the front
- Free field frequency response ±3 dB
- 26 Hz … 22 kHz
- Free field frequency response ±6 dB
- 25 Hz … 22 kHz
- Max. SPL half space (3% THD, 1 m, 100 Hz–6 kHz avg.)
- 122.4 dB SPL
- Max. SPL full space (3% THD, 1 m, 100 Hz–6 kHz avg.)
- 116.4 dB SPL
- Self-generated noise at 10 cm
- <20 dB(A) SPL
- Recommended listening distance
- 1.5 … 3.0 m (5' … 9')
- Crossover frequency
- 570 Hz and 2.0 kHz
Drivers and amplifiers
- Woofer
- 265 mm (10") with magnetic shielding
- Tweeter
- 25 mm (1") with protecting black metal grille
- Output power woofer amplifier
- 330 W
- Output power tweeter amplifier
- 140 W
Inputs
- Analog input
- XLR, analog electronically balanced
- Analog input impedance
- >14k Ohms
- Max. input level
- +24 dBu (DIM 1: 18 dBu for analog delayed)
- Input gain control
- 0 dB ... -15 dB
Digital (with DIM 1 fitted)
- Digital inputs
- BNC (75 Ω): AES3; S/P-DIF
- Digital output
- BNC (75 Ω): AES3
- Sampling rates
- 22.05; 24; 32; 44.1; 48; 64; 88.2; 96; 176.4; 192 kHz
- User adjustable delay range
- 0 … 409.5 ms
Controls
- Output level control
- 94; 100; 108; 114 dB SPL
- Equalization: Bass
- 0; -2.5; -5; -7.5 dB
- Equalization: Treble
- +1; 0; -1; -2 dB
Power
- Power supplies
- Dual switched-mode, 100 … 240 V
Physical
- Dimensions (H x W x D)
- 645 x 330 x 444 mm (25 3/8" x 13" x 17 1/2")
- Weight
- 35.0 kg (77 lbs 3 oz) (+ 100 g with DIM 1 fitted)
- Color
- Anthracite
In the box
- KH 420 G (cat. no. 505988)
- 1 x KH 420 Studio Monitor, 3 x mains cables (European, UK, US), operating manual, Getting Started Quickly supplement
- KH 420 G CCC (cat. no. 506792)
- 1 x KH 420 Studio Monitor, 2 x mains cables (CCC + KC), operating manual, Getting Started Quickly supplement