Neumann KH 120 D Overview 

The Neumann KH 120 D Studio Monitor with Digital I/O and Digital Delay combines a 1" titanium fabric dome tweeter powered by 50 W RMS (80 W peak) of analog amplification with a 5.25" long throw composite sandwich cone bass driver powered by 50 W RMS (80 W peak) analog amplification with dual front panel bass ports. The two speaker drivers are mounted in an elliptical mathematically modeled dispersion waveguide for smoother off-axis response and a more forgiving sound signature in different acoustical environments.

This model is designed to be used as a near-field loudspeaker or as a rear loudspeaker in larger multi-channel systems. It features both analog and daisy-chainable digital BNC I/O for flexible digital inter-connectivity (24 bit, 192 kHz, AES3, and S/P-DIF). It also features digital Lipsync delay (from 0 to 10/12 frames) for aligning audio and video signals as well as digital time-of-flight delay (from 0 to 400 ms) to compensate for different listening distances.

The front panel is made from one piece without discontinuities to reduce diffraction with protective metal grills and the cabinet is made of magnetically shielded aluminum to reduce resonances, improve heat dissipation, and extend the operating lifetime of the unit. The monitor is suitable for professional tracking, mixing, and mastering applications in broadcast, project, and post-production studios.

The system delivers a free field frequency response of 52 to 21,000 Hz with 4-position bass, low-mid, and treble acoustical controls for tailoring the response to different rooms and an input gain control from 0 to -15 dB. The front panel Neumann logo functions as an LED indicator for power and clip/limiting but can also be dimmed for light applications and for use when placed behind screens. A variety of wall, ceiling, truss, subwoofer, stand, and surface mounting options are available through a range of accessories (sold separately).

Frequency Response

Free Field: 52 to 21,000 Hz ±3 dB

Pass Band Free Field: 54 to 20,000 Hz ±2 dB

Self Noise

< 20 dB(A) at 10 cm

Total Harmonic Distortion (THD)

> 100 Hz (<0.5% at 96 dB SPL at 1 m)

Max SPL Level

Full Space: 105.1 dB 

Half Space at 3% THD at 1 M: 111.1 dB 

Short Term SPL with IEC-Weighted Noise: 107 dB(C) 

With Music Material at 2.3 m (pair): 97 dB(C) (full range), 104 dB(C) (with subwoofer) 

Long Term SPL with Pink Noise at 2.3 M, In Typical Listening Conditions (single/pair): 88/93 dB(C) SPL (full range, 89/94 dB(C) SPL (with subwoofer)

Bass Capability

104.8 dB (Averaged between 50 and 100 Hz at Max SPL in half space at 3% THD at 1 m)

Electronics

Amplifier

Woofer: 50 W (80 W peak)

Tweeter: 50 W (80 W peak)

Controller Design

Analog, active

Crossover Frequency

2,000 Hz

Crossover Slope

24 dB/octave, 4th order

Equalization

Bass: 0, -2.5, -5. -7.5 dB

Mid: 0, -1.5, -3, -4.5 dB

High: +1, 0, -1, -2 dB

Protection Circuits

Limiter, low, high

Infrasonic filter protection

30 Hz; 6 dB/octave

Impedance

10 k Ohms in position 94/108 dB SPL at 1 m

20 k Ohms in position 100/114 dB SPL at 1 m

Input Gain Control

0 to -15 dB

Output Level Control

94, 100, 108, 114 dB

CMRR

>56 dB at 15,000 Hz

Maximum Input Level

24 dBu

Indicators

Power On: Neumann logo "white"

Limit/Clip: Neumann logo "red"

Digital Error: flash "red"

Power Supply

100 to 240 V; 50/60 Hz

Power Consumption

Idle: 20 W

Full Output AC: 200 W

Digital Audio I/O

BNC Connectors

AES3

S/P-DIF

Impedance

75 Ohms (input/output)

Input Switching

Analog, Digital A, Digital B, Digital A+B (all available with and without delay)

Resolution

16 to 24-bit DAC, Δ∑

Sampling Rate

32 to 192 kHz

Sensitivity

-18 dBFS

Dynamic Range

120 dB

Delay

Audio-Video: 0 to 409.5 ms

Time-of-Flight: 0 to 409.5 ms 

Audio-Video/Lip Sync Max Frames: 0 to 10.2 (40 ms) frames, 0 to 12.3 (33 ms) frames

Time

Resolution: 0.1 ms / 3.4 cm (1.375")

Mechanical

Cabinet

Painted aluminum, anthracite (RAL 7021)

Powder-coated aluminum, white (RAL 9016)

Operating Conditions

+50 to +104° F (+10 to +40° C)

<90% relative humidity, non-condensing

Drivers

Magnetically Shielded

Woofer: 5.25" (130 mm)

Tweeter: 1.00" (25.0 mm)

Mounting

2x M8 on rear panel

Volume

Internal: 6.5 liters

External: 9.7 liters

Dimensions (H x W x D)

10.875 x 7.125 x 8.625 (277.0 x 182.0 x 220.0 mm)

Weight

14.3 lb (6.50 kg)