Neumann KH 310 D L G

EXPANDED MIDRANGE PRECISION – DRY BASS SOUND

With its specially designed midrange driver, the compact Neumann KH 310 is particularly suited for precise work with speech, vocals, guitars and other instruments that have a midrange emphasis. Its closed design enables a very fast transient response. The associated low harmonic distortion guarantees a neutral reference sound to meet the highest standards.

 

The Neumann KH 310 is a three-way tri-amplified monitor with thermally protected Class AB amplifiers (210 W and two times 90 W). Its Mathematically Modeled Dispersion™ (MMD™) waveguide delivers sound waves into the room with superior accuracy. The drivers are modeled using Neumann’s in-house developed software, which reduces non-linear distortion in every situation. 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 precisely controlled dispersion characteristics optimize reproduction in different room configurations and the response is extremely adaptable through various acoustical control settings.

BEST WORKING ENVIRONMENT: CLOSE TO PROFESSIONAL EARS

The Neumann KH 310 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.

A SOLID BASS FOUNDATION, HIGH IMPULSE FIDELITY

With its powerful switched-mode power supply and tri-channel amplifiers, the KH 310 realizes sound pressure of up to 116.3 dB and thereby retains a high-resolution and neutral representation across the entire frequency response. This provides sufficient energy for even the most demanding impulse dynamics with no distortion or losses. The bass goes down to an impressive 34 Hz.

The closed cabinet design means a lower group delay. This results in almost the entire frequency range being reproduced at the same time; the transient response is precisely controlled at all times.

ULTRALIGHT FABRIC DOME OPTIMIZES MIDRANGE REPRODUCTION

The optimized design of the driver enables a pristine sound right down to the lowest bass regions. For most applications, the rich foundation offers enough bass extension to work cleanly on the mix without the necessity of a supplementary subwoofer. For demanding treble sounds, our own specially developed, powerful alloy fabric dome ensures distortion-free clarity in the high-frequency range.
The fabric midrange dome captures the middle frequency range with the utmost precision. Its ultralight material and the powerful neodymium magnet enable a significantly better transient response with considerably less distortion than comparable midrange domes.

DIGITAL INPUT AND DELAY

The KH 310 D enables flexible digital signal connectivity (24 bit, 192 kHz, AES3 and S/P-DIF) via a digital XLR or 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 310 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 310, 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 310. 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, robust metal grille and magnetic shielding

• Latest modeling techniques used to minimize non-linear (harmonic and intermodulation) distortion
• Low-distortion high frequency reproduction
• Grille protects against mechanical damage

(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 simulated, neodymium magnet, fabric dome, midrange driver with optimized low stray magnetic field

• Dedicated driver reproduces important midrange frequencies for speech and vocals
• Latest modeling techniques used to minimize non-linear distortion
• Light-weight dome has better transient response and less breakup modes than cone designs
• High power magnet reduces harmonic and intermodulation distortion

(5)
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

(6)
Compact cabinet

• Robust package for a long life
• No standing wave resonances

One-piece front panel with no discontinuities

• Reduced diffraction and smoother frequency response

(7)
4-position bass, low-mid and treble acoustical controls

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

(8)
Wide range input gain and output level controls

• Easier interfacing with signal sources

(9)
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

(10)
XLR electronically balanced analogue input with ground lift

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

(11)
Universal switched-mode power supply (100 … 240 V)

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

(12)
Fully documented extensive mounting hardware range

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

(13)
Powerful amplifiers with large headroom and overheat limiting

• Improved transient response
• Assured reliability and safety

Separate fast acting thermo limiters for woofer, midrange 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

(14)
Delay (0 … 409.5 ms)

• Lip-sync: To align audio and video 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 XLR/BNC inputs 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 310 is “pair matched” to any other KH 310

Optional robust metal grille

• Can be used to protect the drivers
  
  
  

 

Technical specifications: 

Free field frequency response ±6 dB	30 Hz … 22 kHz
Free field frequency response ±3 dB	34 Hz … 21 kHz
Free field frequency linearity deviation between 100 Hz and 10 kHz	± 1.1 dB
Reproduction accuracy between 100 Hz and 10 kHz: 100%, 80%, 50% of loudspeakers produced	±0.87; ±0.39; ±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 (>85 Hz)
Max. SPL calc. in half space at 3% THD at 1m (averaged between 100 Hz and 6 kHz)	116.3 dB SPL
Max. SPL in full space at 3% THD at 1m (averaged between 100 Hz and 6 kHz)	110.3 dB SPL
Bass capability: Max. SPL in half space at 3% THD at 1m (averaged between 50 Hz and 100 Hz)	104.5 dB SPL
Max. short term SPL with IEC-weighted noise (IEC 60268-5) at 1 m, in typical listening conditions	113 dB(C) SPL
Max. short term SPL with music material at 2.3 m in typical listening conditions (pair / full range)	100 dB(C) SPL
Max. short term SPL with music material at 2.3 m, in typical listening conditions (pair with subwoofer)	107 dB(C) SPL
Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair full range)	93 / 99 dB(C) SPL
Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair with subwoofer)	94 / 100 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	>13k Ohms
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 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	>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	650 Hz and 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, midrange dome and tweeter. Woofer soft clip and excursion limiters. Amplifier overheat.
Infrasonic filter: frequency; slope	15 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:100%/60%/30%/off; Red:100%/60%/30%
Output power woofer amplifier (THD+N with limiter deactivated: 10%)	210 W
Output power midrange amplifier (THD+N with limiter deactivated: 10%)	90 W
Output power tweeter amplifier (THD+N with limiter deactivated: 10%)	90 W
Output power woofer amplifier (THD+N with limiter deactivated: 0.1%)	150 W
Output power midrange amplifier (THD+N with limiter deactivated: 0.1%)	70 W
Output power tweeter amplifier (THD+N with limiter deactivated: 0.1%)	70 W
Mains Power Supply: input voltage; frequency	100-240V; 50/60 Hz
Power consumption (230 V / 100 V): Idle	30 W
Power consumption (230 V / 100 V): Full output	300 W
Cabinet material	Polyurethane front, wooden sleeve, aluminum electronics panel
Cabinet surface finish; color (front / back)	Painted; metallic anthracite (RAL 7021) / black (RAL 9005)
Operating conditions	+10° C to +40° C (+50° F to +104° F); <90% RH, non-condensing
Transport/storage conditions	-25° C to +70° C (-13° F to 158° F); <90% RH; non-condensing
Woofer	210 mm (8 1/4") magnetically sheilded
Midrange	75 mm (3") with magnetic sheilding
Tweeter	25 mm (1") with protecting black metal grille
Mounting points	2 x M8 on side panels; thread depth from outside of cabinet 25 mm (1”);Rear panel screws for attaching LH 41 base plate
Product dimensions (height x width x depth)	253 x 383 x 292 mm (10" x 15 1/8" x 11 1/2")
External net volume	28.3 liters
Product weight	13.1 kg (28 lbs 13 oz)
Packed dimensions (height x width x depth), mm (inches)	360 x 380 x 590 mm (14 1/8" x 15" x 23 1/4")
Packed weight	16.9 kg (37 lbs 3 oz)
Packed cube	0.081 m³