Neumann KH 310 II L

The KH 310 II sets a new benchmark for three-way reference monitors, delivering exceptional midrange clarity, ultra-low distortion and increased SPL. Its DSP-controlled architecture offers superior accuracy and predictable translation for demanding nearfield environments as well as optional room correction via MA 1 Automatic Monitor Alignment.

FEATURES

• Re‑engineered 3‑way design with lower THD and higher SPL

• Razor-sharp imaging due to extremely low tolerances (±0.6 dB)

• DSP platform with MA 1 alignment and digital input

• Closed‑box design for time‑accurate, low‑delay tight bass

• ELFF woofer for low distortion at high excursion 

• Backward‑compatible form factor for KH 310 installations 

The KH 310 II introduces the next era of precision to Neumann’s iconic three‑way monitor line. While maintaining the sonic character that made the original KH 310 a reference in countless studios, nearly every internal component has been redesigned to further improve real‑world performance. A new amplifier platform increases total power to 525 W. This enables cleaner output with even lower THD and 5 dB higher max SPL. Tighter component integration and production tolerances achieve ±0.6 dB linearity from 100 Hz to 10 kHz for razor sharp imaging.

At the heart of the KH 310 II is an DSP architecture that supports MA 1 Automatic Monitor Alignment, ensuring precise frequency and phase correction for consistent translation in any room. Analog and digital AES3id inputs (BNC) enable seamless integration with modern workflows, including Neumann’s new generation of KH subwoofers and monitor control solutions. 

The closed-box design continues to deliver the tight, time‑accurate bass response that engineers rely on for trustworthy low‑end decisions. The legendary 3"" soft‑dome midrange driver remains the benchmark for vocal definition and mid band intelligibility. Combined with lower distortion and more headroom, the KH 310 II allows for longer fatigue‑free sessions and faster decision‑making thanks to its increased transparency. 

Fully compatible with previous KH 310 installations, the KH 310 II offers a future‑ready foundation for stereo and immersive setups, preserving Neumann’s tonal signature while delivering meaningful improvements in every key parameter.

Superior midrange transparency for fast and confident mix decisions. 
The advanced DSP architecture delivers exceptional mid band clarity, enabling engineers to judge vocals, dialogue, and instruments with unmatched precision.

Consistent, ultra‑low distortion at all levels for fatigue‑free listening
Redesigned amplifiers and optimized DSP‑based processing minimize harmonic and intermodulation distortion, ensuring clear reproduction even at high levels and supporting longer, more focused sessions.

Closed‑box low‑frequency behaviour for time‑accurate, reliable mix translation
The sealed design provides exceptionally low group delay and tight transient response, giving engineers a trustworthy low end that translates consistently across all playback systems.

MA 1 ready for perfectly aligned stereo and multichannel setups
The integrated DSP platform enables precise MA 1 alignment, improving frequency and phase response in any room and ensuring consistent accuracy from stereo nearfields to complex immersive installations.

SPECIFICATIONS

Acoustics    
Free field frequency response ±6 dB: 29 Hz … 21 kHz
Free field frequency response ±3 dB: 33 Hz … 21 kHz
Pass band free field frequency response: 36 Hz … 20 kHz, ±1.25 dB
Free field frequency linearity deviation between 100 Hz and 10 kHz: ±0.6 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 (>82 Hz)
Max. SPL calc. in half space at 3% THD at 1m (averaged between 100 Hz and 6 kHz): 121.4 dB SPL
Max. SPL in full space at 3% THD at 1m (averaged between 100 Hz and 6 kHz): 115.4 dB SPL
Bass capability: Max. SPL in half space at 3% THD at 1m (averaged between 50 Hz and 100 Hz): 107.8 dB SPL
Dolby D.A.R.D.T. Max SPL fullrange: 118 dB
Dolby D.A.R.D.T. Max SPL bass managed: 123 dB
Recommended Listening Distance: 1.0 … 2.5 m (3'… 8')
Feasible Listening Distance: 0.75 … 6.0 m (2'6"… 19')
Acoustic principle: Sealed
Acoustical Axis horizontal: 78 mm (from tweeter side)
Acoustical Axis vertical (from bottom): 132 mm

Analog Inputs and Outputs    
Analog input(s): XLR: analog electronically balanced
Analog input impedance: >12k Ohms
Max. input level: 24 dBu for 94 dB SPL setting; +14 dBu for 100 dB SPL setting; +9 dBu for 108 dB SPL setting; -1 dBu for 114 dB SPL setting
Common mode rejection ratio (CMRR): >56 dB @ 15kHz
Volume control: via MA 1 software
Volume control range; resolution: 0 … -∞ dB; 0.1 dB
Analog dynamic range; THD+N: 118 dB(A); -90 dB

Digital Inputs and Outputs    
Digital input(s): BNC (75 Ω): AES3id
Digital output(s): BNC (75 Ω): AES3id
Max. Input Level; pk-pk, unbalanced / balanced: 1.2 V
Digital converter: resolution; designL 24 Bit
Digital converter: sampling rate: 32 kHz..200 kHz
Digital internal sampling rate: 48 kHz
Output sample rate: Identical to input sample rate
Latency ADA / DA: Analog Input,: 2.6 ms AES3id Input: 4.7 ms
Dynamic range A-D-A: 118 dB 
Delay: Resolution: time; distance: 20.8 µs; 0.71 mm (0.28 ")
Delay: Time-of-flight maximum distance: 0 … 120 ms, 0 … 41.2 m (135')
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
Equalization: Bass: 0; -1.5; -3; -4.5 dB
Equalization: Low-Mid: 0; -1.5; -3; -4.5 dB
Equalization: Treble: '+1; 0; -1; -2 dB
Input selector: Analog; AES3id L; AES3id R; Mono
Ground Lift: Yes
Control: Local; Network
Mains Switch: Yes
Mains Voltage Select: Universal Power Supply 100 V~ … 240 V~

Electronics - Controller    
Controller design: Digital; active
DSP resolution: 32 Bit Audio, Processing 64 Bit double precision
Crossover frequency: 700 and 1700 Hz
Crossover slope: 24 dB / oct
Automatic room calibration via MA 1: Yes
FIR phase correction: Linear phase (60 Hz ... 18 kHz; +/- 45°)
Protection circuitry: Independent soft clip, peak and thermo limiters for woofer and tweeter; Woofer excursion limiter; thermo limiter for the electronics and amplifiers
Remote control: Via Ethernet and MA 1
Display: On; Normal Operation: Neumann logo “White”
Display: Identification: Neumann logo “Rosé”
Display: Limit / Clip / Errors / Protection /Boot Mute / Shut Down Mute: Neumann logo “Red”
Logo Brightness: via MA 1 software

Electronics - Amplifiers and Power Supply
Output power woofer amplifier (THD+N with limiter deactivated: 10%): 300 W
Output power midrage amplifier (THD+N with limiter deactivated: 10%): 160 W
Output power tweeter amplifier (THD+N with limiter deactivated: 10%): 125 W
Output power woofer amplifier (THD+N with limiter deactivated: 0.1%): 185 W
Output power midrage amplifier (THD+N with limiter deactivated: 0.1%): 125 W
Output power tweeter amplifier (THD+N with limiter deactivated: 0.1%): 125 W
Mains Power Supply: input voltage; frequency: SMPS: 100-240 V; 50/60 Hz
Power consumption (230 V / 100 V): Standby: <300 mW
Power consumption (230 V / 100 V): Idle: 26 W
Power consumption (230 V / 100 V): Full output: 320 W
Standby: automatic, 20 mins (default)

Mechanics
Cabinet material: Composite polycarbonate 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); <75% RH, non-condensing
Transport/storage conditions: -25° C to +60° C (-13° F to 140° F); <90% RH; non-condensing
Woofer: 210 mm (8 1/4")
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”);
Product dimensions (height x width x depth): 253 x 383 x 292 mm (10" x 15 1/8" x 11 1/2")
Internal net volume: 16.2 liters
External net volume: 24 liters
Product weight: 13.0 kg; (28 lbs 11 oz)
Packed dimensions (height x width x depth), mm (inches): 418 x 481 x 409 mm; (16.5" x 18.9" x 16.1")
Packed weight: 18.0 kg; (39 lbs 11 oz)
Packed cube: 0.082 m³; (2.90 ft³)

What's in the Box:

• 1 x KH 310 II Left Monitor,  anthracite

• 4 x Mains Cables, black (EU/KR, UK, US and CN)

• 4 x Self-adhesive feet

• 1 x Safety Guide

• 1 x Supplement “Getting Started Quickly

• 1 x Operating Manual