Neumann KH 120 D aktiivikaiutin

Neumann KH120D aktiivikaiutin
- Aktiivinen lähikenttämonitori DA-muuntimella
- Neutraali aktiivimonitori alumiinikotelolla
- Studio-, hifi- ja kotiteatterikäyttöön
- 5.25" Woofer
- 1" Tweeter
- Vahvistinteho: 100W (50W woofer, 50W tweeter)
- Taajuusvaste: 52 Hz - 21 kHz +/- 3 dB
- Sisääntulot: XLR: Analog, BNC: Digital A, Digital B, Digital A+B (all available with and without delay) BNC (75 O): AES3; S/P-DIF
- Ulostulot: BNC (75 O): AES3
- Paino: 6.5 kg


The KH 120 is Neumann's trailblazer model and development yardstick for compact studio monitors. It has been a reference class for close-range monitoring since 2011. Enormous power reserves meet high-precision sound conduction. The result: Maximum signal fidelity and distinctly contoured transients across the entire, neutrally designed frequency response. This enables you to precisely control tonal depth, spatial image and even the smallest details in the mix.

The KH 120 is a two-way bi-amplified monitor with thermally protected class-AB amplifiers (80 W each). Just like the drivers, its Mathematically Modeled Dispersion™ (MMD™) waveguide is calculated with an optimal level of 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 finely controlled dispersion characteristics optimize reproduction in even the most varied of room configurations.

Best working environment: Close to professional ears

The KH 120 is typically used in near-field applications such as project, music, broadcast and post-production studios for recording, mixing and mastering. It it also available as a digital input “D” version.

Ports and high dynamics: No longer a contradiction

With its digital switched-mode power supply and bi-amplification, the KH 120 realizes sound pressure of up to 111.1 dB – and in doing so, retains a high-resolution and neutral representation across the entire frequency response. This provides sufficient energy for maximum dynamics without distortion and losses. As a result, the bass goes down to impressive 52 Hz. Despite using ports, there is no “overhang” in the bass response. The transient response remains well in control. The optimized design of the drivers delivers clean sound right down to the lowest parts of the 50 Hz region. This rich foundation offers enough room to work cleanly on the mix without the necessity for a supplementary subwoofer. In the demanding treble range, the specially developed, powerful alloy fabric dome ensures distortion-free reproduction.

Digital input and delay

The KH 120 D enables flexible digital signal connectivity (24 bit, 192 kHz, AES3 and S/P-DIF) via a digital BNC input and buffered BNC output. Audio-visual synchronization ensures a lip sync delay of 0 to 10/12 frames. The loudspeaker can be delayed up to 400 ms, in order to compensate for varying listening distances.

Hundreds of good reasons from the Neumann philosophy

The KH 120 has been developed true to the Neumann philosophy for monitor loudspeakers. Every component, every shape, every signal and every wave motion is a consequence of this philosophy. No form or component is there without reason. There are hundreds of tangible reasons built into the KH 120, which all stand for exceptionally pure and neutral sound. These include, for example, curvatures of the housing that reduce edge diffraction. Also included is the pistonic output of the bass driver which does not give rise to harmonic distortions, even with the highest sound peaks. Some of these reasons are obvious in the KH 120. Others Neumann prefers to keep to itself. But together, each can be heard – sound professionals in both large and small studios all around the world can testify to this.



(1)
In-house simulated tweeter with alloy fabric dome (magnetically shielded)

Latest modeling techniques used to minimize non-linear (harmonic and intermodulation) distortion
Low-distortion high frequency reproduction

(2)
Elliptical Mathematically Modelled Dispersion™ (MMD™) waveguide

Smoother off -axis response
More forgiving of diverse acoustical environments

Wide horizontal dispersion

Freedom of movement across the mixing console

Narrow vertical dispersion

Reduces reflections off the mixing console

(3)
Two-color + dimmable Neumann logo

Displays operation status and activation of the extensive protection system
Dimmable for low lighting level conditions or behind the screen applications

(4)
In-house modelled long-throw composite sandwich cone bass driver with Extremely Linear Force Factor™ (ELFF™), magnetic shielding and flow optimized die cast basket

Damping of break up modes brings low distortion at high sound levels
Linear pistonic motor gives a very low harmonic distortion even at high excursions
Reduced air noise and improved rocking modes

(5)
Robust metal grilles

Protects against mechanical damage

(6)
Large high-capacity flow-optimized bass reflex ports with pipe resonance damping

Fast bass transient response
Reduced bass compression at high output levels
No coloration from organ pipe resonance
Easier to mount in tight spaces

(7)
Compact aluminum cabinet

Robust package for a long life
No standing wave resonances
Excellent heat dissipation

One-piece front panel with no discontinuities

Reduced diffraction and smoother frequency response

(8)
4-position bass, low-mid and treble acoustical controls

More control in diverse acoustical environments
Fast acoustical set up in mobile applications
Repeatable settings after moving loudspeakers

(9)
Wide range input gain and output level controls

Easier interfacing with signal sources

(10)
Fully documented extensive mounting hardware range

More flexibility in more diverse locations and backwards compatible to previous products
Easy advanced planning for installations

(11)
Display dimmer and ground lift

For low lighting level conditions or behind the screen applications
Reduced noise in electrically noisy environments and over-comes ground loops

(12)
Universal switched-mode power supply (100 … 240 V)

One version works in any country and robust to poor quality mains supply

(13)
XLR electronically balanced analogue input with ground lift

Standard interfacing to professional equipment
Reduced noise in electrically noisy environments and over-comes ground loops

(14)
Delay (0 … 409.5 ms)

Lip-sync: To align audio and video signals up to 10 frames (40 ms frames) or 12 frames (33 ms frames)
Time-of-flight: To compensate for listening distance differences up to 141 m (460 ft.)
Delay can be applied to analog and digital signals

(15)
Digital BNC input and buffered BNC output

For flexible and trouble-free digital interconnectivity (24 bit, 192 kHz, AES3 and S/P-DIF)

More Features

Production consistency due to individual hand alignment in final testing

Any KH 120 is “pair matched” to any other KH 120

Separate fast acting thermo limiters for woofer and tweeter to protect the voice coils and power amplifiers

Woofer soft clip and excursion limiters
Increases system reliability
Allows extraction of the maximum performance from the system

Powerful amplifiers with large headroom and overheat limiting

Improved transient response
Assured reliability and safety

Free field frequency response ±6 dB 46 Hz … 24 kHz
Free field frequency response ±3 dB 52 Hz … 21 kHz
Free field frequency linearity deviation between 100 Hz and 10 kHz ± 1.0 dB
Reproduction accuracy between 100 Hz and 10 kHz: 100%, 80%, 50% of loudspeakers produced ±0.97; ±0.40; ±0.23 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 (>120 Hz)
Max. SPL calc. in half space at 3% THD at 1m (averaged between 100 Hz and 6 kHz) 111.1 dB SPL
Max. SPL in full space at 3% THD at 1m (averaged between 100 Hz and 6 kHz) 105.1 dB SPL
Bass capability: Max. SPL in half space at 3% THD at 1m (averaged between 50 Hz and 100 Hz) 104.8 dB SPL
Max. short term SPL with IEC-weighted noise (IEC 60268-5) at 1 m, in typical listening conditions 107 dB(C) SPL
Max. short term SPL with music material at 2.3 m in typical listening conditions (pair / full range) 97 dB(C) SPL
Max. short term SPL with music material at 2.3 m, in typical listening conditions (pair with subwoofer) 104 dB(C) SPL
Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair full range) 88 / 93 dB(C) SPL
Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair with subwoofer) 89 / 94 dB(C) SPL
Analog input(s) XLR: Analog, BNC: Digital A, Digital B, Digital A+B (all available with and without delay)
Analog input impedance 10k Ohms in position 94/108 dB SPL at 1 m; 20k Ohms in position 100/114 dB SPL at 1 m
Max. input level +24 dBu (18 dBu for analog delayed)
Common mode rejection ratio (CMRR) >56 dB @ 15kHz
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
Digital input(s) BNC (75 O): AES3; S/P-DIF
Digital output(s) BNC (75 O): AES3
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 internal sampling rate 96 kHz
Dynamic range A-D-A >116 dB(A)
Dynamic range D-A >123 dB(A)
THD+N: analog delayed, digital < -104 dB; < -106 dB
Digital sensitivity -18 dBFS = 100 dB SPL at 1 m
Latency 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")
Controller design Analog; active
Crossover frequency 2.0 kHz
Crossover slope 24 dB/oct; 4th order
Equalization: Bass 0; -2.5; -5; -7.5 dB
Equalization: Low-Mid 0; -1.5; -3; -4.5 dB
Equalization: Treble +1; 0; -1; -2 dB
Protection circuitry Independent thermo limiters for woofer, tweeter. Woofer soft clip and excursion limiters. Amplifier overheat.
Infrasonic filter: frequency; slope 30 Hz; 6 dB/oct.
Display: On; Normal Operation Neumann logo “White”
Display: Limit / Clip / Errors / Protection /Boot Mute / Shut Down Mute Neumann logo “Red”
Display Brightness White:on/dimmed/off: Red:on/dimmed
Output power woofer amplifier (THD+N with limiter deactivated: 10%) 80 W
Output power tweeter amplifier (THD+N with limiter deactivated: 10%) 80 W
Output power woofer amplifier (THD+N with limiter deactivated: 0.1%) 50 W
Output power tweeter amplifier (THD+N with limiter deactivated: 0.1%) 50 W
Mains Power Supply: input voltage; frequency 100-240V; 50/60 Hz
Power consumption (230 V / 100 V): Idle 40 W
Power consumption (230 V / 100 V): Full output 200 W
In-rush current (Peak) 20 A
Cabinet material Aluminium
Cabinet surface finish; color (front / back) Painted; metallic anthracite (RAL 7021)
Operating conditions +10° C to +40° C (+50° F to +104° F); <75% RH; non-condensing
Transport/storage conditions -25° C to +70° C (-13° F to 158° F); <90% RH, non-condensing
Woofer 130 mm (5.25") magnetically shielded with protecting black metal grille
Tweeter 25 mm (1") with protecting black metal grille
Mounting points 2 x M8 threaded inserts with 70 mm spacing on back panel; thread depth 15 mm (5/8”)
Product dimensions (height x width x depth) 277 x 182 x 220 mm (10 7/8” x 7 1/8” x 8 5/8”)
Internal net volume 6.5 liters
External net volume 9.7 liters
Product weight 6.5 kg (14 lbs 5 oz)
Packed dimensions (height x width x depth), mm (inches) 415 x 365 x 280 mm (16 3/8” x 14 3/8” x 11”)
Packed weight 8.5 kg (18 lbs 8 oz)
Packed cube 0.042 m³