Neumann KH 310 II L

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

• Reproduction accuracy between 100 Hz and 10 kHz: 100%, 80%, 50% of loudspeakers produced: TBA - after mass production

• 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

• Feasible listening distance: 0.75 … 6.0 m

• 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; design: 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: User adjustable delay range

• Delay: Resolution: time; distance: 20.8 µs; 0.71 mm

• Delay: Time-of-flight maximum distance: 0 … 120 ms, 0 … 41.2 m

• 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 midrange 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 midrange 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; <75% RH, non-condensing

• Transport/storage conditions: -25° C to +60° C; <90% RH; non-condensing

• Woofer: 210 mm

• Midrange: 75 mm with magnetic shielding

• Tweeter: 25 mm with protecting black metal grille

• Mounting points: 2 x M8 on side panels; thread depth from outside of cabinet 25 mm

• Product dimensions (height x width x depth): 253 x 383 x 292 mm

• Internal net volume: 16.2 liters

• External net volume: 24 liters

• Product weight: 13.0 kg

• Packed dimensions (height x width x depth): 418 x 481 x 409 mm

• Packed weight: 18.0 kg

• Packed cube: 0.082 m³