Neumann KH 420 强大的三分频中场录音室监听音箱
KH 420是KH系列首款中场监听音箱，有源三分频（10英寸低频、3英寸中频、1英寸高频）非常适合听觉范围达到11米的大型5.1和7.1系统使用。低频下潜达到不可思议的26Hz，比KH 120整整低了一个倍频程，如果需要更低的低频则可以搭配KH 870低音音箱使用，低频下潜可以达到18Hz。
采用电脑优化过的驱动单元，数字建模发散波导技术可控制让试听室里的音箱互相匹配。
可选配DIM 1数字输入模块，可提供数字AES3和S/PDIF数字输入接口，并具备延迟功能，可帮助音视频进行同步并补偿费等距的音箱摆放情况。延迟时间在0.1到409.5毫秒之间可调。
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Free field frequency response |
26 Hz … 22 kHz, ± 3 dB |
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Pass band free field frequency response |
28 Hz … 20 kHz, ± 2 dB |
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Self-generated noise (with controls set to 100 dB SPL and 0 dB) |
< 20 dB(A) at 10 cm |
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Total harmonic distortion < 0.5 % at 95 dB SPL at 1 m |
> 120 Hz |
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Max. SPL in full space / calc. in half space at 3% THD at 1 m |
116.4 / 122.4 dB SPL (averaged 100 Hz ... 6 kHz) |
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Bass Capability (max. SPL calc. in half space at 3% THD at 1 m) |
109.9 dB SPL (averaged 50 ... 100 Hz) |
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Max. short term SPL with IEC-weighted noise (IEC 60286-5) at 1 m, in typical listening conditions |
109 dB(C) SPL |
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Max. short term SPL with music material at 3 m, in typical listening conditions (pair) |
103 dB(C) SPL (full range) 109 dB(C) SPL (with subwoofer) |
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Max. long term SPL with pink noise at 3 m, in typical listening conditions (single/pair) |
90 / 96 dB(C) SPL (full range) 90 / 96 dB(C) SPL (with subwoofer) |
ELECTRONICS
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Bass / Midrange / Treble Class AB amplifiers, cont. (peak) output power* |
295 W (330 W) / 130 W (140 W) / 130 W (140 W) |
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Controller design |
analog, active |
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Crossover frequencies / slope |
570 Hz, 2 kHz / 24 dB/oct. |
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Equalization: Bass / Mid / High |
0, ?2.5, ?5, ?7.5 dB / 0, ?1.5, ?3, ?4.5 dB / +1, 0, ?1, ?2 dB |
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Equalization: Parametric EQ |
Gain: +4 ... ?12 dB, Frequency: 25 ... 320 Hz (3 ranges), Q: 1 ... 8 |
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Protection circuitry |
Excursion and Peak Limiter: Low; Thermo Limiter: Low, Mid, High; Overheat: Amplifiers |
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Infrasonic filter frequency; slope |
9 Hz; 18 dB/oct. |
ANALOG INPUT
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Impedance, electrically balanced |
XLR, 14 kΩ |
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Input gain control (sensitivity) at 1 m for a 0 dBu input |
0 dB to ?14 dB |
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Output level control |
94, 100, 108, 114 dB SPL |
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CMRR |
> 56 dB @ 100 Hz ... 16 kHz |
DIGITAL INPUT (WHEN OPTIONAL DIM 1 ACCESSORY IS FITTED)
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Format XLR / BNC |
AES3 / AES3 and S/P-DIF |
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Impedance XLR (balanced) / BNC (unbalanced) |
110 Ω / 75 Ω (input/output) |
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Input switching |
Analog, Digital A, Digital B, Digital A+B (all available with and without delay) |
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Digital converter: resolution, design |
16 … 24-bit DAC, Δ∑ |
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sampling rate |
22.05, 24, 32, 44.1, 48, 64, 88.2, 96, 176.4, 192 kHz |
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Digital sensitivity |
?18 dBFS = 100 dB SPL at 1 m |
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Audio-Video/lip sync and Time-of-Flight delay range |
0 409.5 ms / 140.87 m (462‘ 6”) |
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Audio-Video/lip sync max. frames |
0 … 10.2 (40 ms) frames 0 … 12.3 (33 ms) frames |
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Resolution: time/distance |
0.1 ms / 3.4 cm (1 3/8”) |
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Latency D-A (A-D-A) |
0.22 - 1.85 ms (0.54 ms) |
DISPLAYS AND MAINS POWER
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Displays and indicators: power on |
Neumann logo ?White?, dimmable: 100%/60%/30%/0% |
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limit/clip |
Neumann logo ?Red?, dimmable: 100%/60%/30% |
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Mains Power Supply: voltage; frequency |
100 - 240 V~; 50 - 60 Hz |
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Power consumption: Idle / Full output |
60 W (+5 W when DIM 1 fitted) / 800 W |
MECHANICS
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Height x width x depth, mm (inches) |
645 x 330 x 444 mm (253/8” x 13” x 171/2”) |
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External volume |
93 liters |
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Weight |
35 kg (+ 100 g when DIM 1 fitted) |
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Drivers, magnetically shielded: Woofer / Midrange / Tweeter |
265 mm (10”) / 76 mm (3”) / 25 mm (1”) |
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Mounting points |
8 x M5 on rear |
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