The KH 310 is a three-way tri-amplified monitor with thermally protected Class AB amplifiers (210 W and two times 90 W). Its Mathematically Modelled Dispersion™ (MMD™) waveguide delivers sound waves into the room with superior accuracy. The drivers are modelled 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 optimise reproduction in different room configurations, and the response is extremely adaptable through various acoustical control settings.

BEST WORKING ENVIRONMENT: CLOSE TO PROFESSIONAL EARS

The KH 310 is typically used in near-field applications such as project, music, broadcast and post-production studios for recording, mixing and mastering. It is 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 realises 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 optimised 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.

THE PERFECT COMPLEMENT: THE KH 750 DSP SUBWOOFER

In addition to its outstanding acoustic characteristics, this DSP-based subwoofer not only offers excellent acoustic properties, but – in combination with the Neumann. Control iPad® app – it also provides the possibility of adapting a KH 310 stereo pair to the room using the patented “Guided Alignment“. Furthermore, the entire stereo system can be controlled via the app.

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 and robust metal grille

• Latest modelling techniques used to minimise 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-colour + 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 optimised low stray magnetic field

• Dedicated driver reproduces important midrange frequencies for speech and vocals
• Latest modelling techniques used to minimise non-linear distortion
• Light-weight dome has better transient response and fewer 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 optimised 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 setup 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 overcomes ground loops

10. XLR electronically balanced analogue input with ground lift

• Standard interfacing to professional equipment
• Reduced noise in electrically noisy environments and overcomes ground loops

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

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

12. Fully documented, extensive mounting hardware range

• More flexibility in mounting cabinets in more diverse locations and backwards compatible with 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 the extraction of the maximum performance

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

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 electronically balanced
Analog input impedance	>13k Ohms
Max. input level	+24 dBu
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
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	24 W
Power consumption (230 V / 100 V): Full output	300 W
Cabinet material	Polyurethane front, wooden sleeve, aluminium electronics panel
Cabinet surface finish; colour (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 shielded
Midrange	75 mm (3″) with magnetic shielding
Tweeter	25 mm (1″) with protective 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″) x 2
External net volume	28.3 liters x 2
Product weight	13.0 kg (28 lbs 11 oz) x 2
Packed dimensions (height x width x depth), mm (inches)	360 x 380 x 590 mm (14 1/8″ x 15″ x 23 1/4″) x 2
Packed weight	16.8 kg (37 lbs 1 oz) x 2
Packed cube	0.081 m³ x 2