NEUMANN KH 870 II

Name: NEUMANN KH 870 II
Brand: Neumann
SKU: ne.kh870ii
Price: 4613.5 EUR
Availability: InStock

€ 4.792,56

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€ 4.613,50

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€ 5.582,33

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SKU: ne.kh870ii

Brand: Neumann

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Headphones & Speakers, Neumann

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Description
Specifications
In the Box

Powerful Reference-Quality Sub for Immersive Systems

The KH 870 II is the perfect subwoofer for larger rooms, providing powerful bass extension with Neumann precision. It includes a unique and flexible Bass Manager for stereo, surround and immersive systems up to 7.1.4. Analog and digital outputs provide flexible connectivity to up to 11 studio monitors.

Next Generation Subwoofer

The KH 870 II improves on its predecessor in acoustic performance and adds new features. Thanks to two novel long-throw 10” woofers with Extremely Linear Force Factor (ELFF™) technology and intelligent protection limiters, the KH 870 II ensures exceptionally low distortion even at maximum SPLs.

The KH 870 II extends low frequency reproduction down to 16 Hz and delivers about twice the output of the KH 810 II. This makes the KH 870 II the perfect complement to midfield speakers such as the KH 420.

The KH 870 II is DSP-controlled for superior sonic performance and seamless integration via MA 1 Automatic Monitor Alignment (sold separately). When combined with analog Neumann studio monitors such as the KH 120 A (discontinued), KH 310, or KH 420, it offers sufficient DSP-power for aligning an entire stereo, surround or even immersive system up to 7.1.4 via MA 1, optimizing not only the frequency response but also the phase. Of course, the KH 870 II is also a perfect complement to Neumann’s DSP-equipped studio monitors. In surround and immersive systems, analog and DSP-equipped Neumann speakers can be combined and room-aligned using MA 1 with Multichannel Extension (sold separately). The KH 870 II is therefore much more than “just” a subwoofer: It is the perfect tool for upgrading existing systems and/or extending them for immersive audio.

Precision in Every Detail

As subwoofers are typically placed on the floor, robust grilles protect the drivers from accidental damage. The rigid cabinet features a highly efficient bass reflex system, which is carefully engineered and tuned for the tightest bass reproduction – with inaudible port noise.

Two analog XLR inputs and outputs are available to connect the subwoofer for stereo operation. For multichannel operation, the KH 870 II offers two Sub D25 connectors for up to 12 analog input channels and another two Sub D25 connectors for up to 11 analog output channels. All inputs and outputs are electronically balanced. Studio monitors can also be connected digitally via AES3 (BNC). For audio networking, this subwoofer is also available as an AES67 variant, the KH 870 II AES67.

The KH 870 II excels in music, film scoring, broadcast, and post-production studios for tracking, mixing, and mastering. Thanks to a novel power amp design, the KH 870 II combines superior audio performance with excellent energy efficiency. Its Auto Standby function can be deactivated in the MA 1 app.

FEATURES:

Deep and extremely powerful bass down to 16 Hz
The perfect complement to mid-size and large Neumann KH line studio monitors
DSP-controlled for superior sonics and unparalleled precision
Room correction via MA 1 Automatic Monitor Alignment (sold separately)
Supports automatic alignment also for analog KH-line studio monitors (patented)

Acoustics

Free field frequency response (±6 dB): 16 – 750 Hz
Free field frequency response (±3 dB): 18 – 310 Hz
Self-generated noise (10 cm, input gain 100 dB SPL @ 0 dBu): < 20 dB(A) SPL
Minimal self-generated noise (10 cm): < 20 dB(A) SPL
Sine wave output (THD < 0.5%, 1 m, half space): 95 dB SPL (33 – 200 Hz)
Bass capability (max SPL, 3% THD, 1 m, half space, 50–100 Hz avg.): 114.9 dB
Max SPL for subwoofers: On floor: 114.9 dB / Against wall: 117.9 dB / In corner: 120.9 dB
Dolby DARDT™ max SPL (bass managed): 123 dB SPL
Acoustical principle: Bass reflex, front ports

Analog Inputs and Outputs

Analog inputs: 2 × XLR, electronically balanced / 1 × Sub-D 25: 8 × electronically balanced / 1 × Sub-D 25: 4 × electronically balanced
Input impedance: > 12 kΩ
Max input level: 24 dBu (CH 1–3, 12) / 21 dBu (CH 5–11)
Common mode rejection ratio (CMRR, XLR / Sub-D): > 56 dB @ 15 kHz
Crosstalk (1 kHz, level matching): –90 dB; ±0.1 dB
Remote volume control: via MA 1 software
Volume control range: 0 … –∞ dB
Volume control resolution: 0.1 dB
Analog dynamic range (A-D-A, THD+N): 120 dB(A) (CH 1–3, 12) / 116 dB(A) (CH 5–11) / < 0.003% (–90 dB)
Signal routing modes: Analog
Analog outputs: 2 × XLR, electronically balanced / 1 × Sub-D 25: 7 × electronically balanced / 1 × Sub-D 25: 4 × electronically balanced

Digital Inputs and Outputs

Digital inputs: 1 × BNC (daisychain in)
Digital outputs: 7 × BNC (11 × monitor out) / 1 × BNC (daisychain out)
Converter resolution: 24 bit
Converter sampling rate: 32 – 200 kHz
Internal sampling rate: 48 kHz
Output sampling rate: 48 kHz
Dynamic range A-D: 124 dBA (CH 1–3, 12) / 121 dBA (CH 5–11)
Dynamic range A-D-A: 121.5 dBA (CH 1–3, 12) / 116.2 dBA (CH 5–11)
Dynamic range D-A: 125 dBA (CH 1–3, 12) / 118 dBA (CH 5–11)
Digital sensitivity: –18 dBFS = 100 dB SPL @ 1 m
Latency (A-D-A): 2 ms
User adjustable delay range: 0 – 115 ms
Delay resolution: Time: 20.8 µs / Distance: 0.71 mm (0.28")
Lip sync delay: 2 frames (40 ms) / 2.75 frames (33 ms)
Time-of-flight maximum distance: FW based, up to 115 ms

User Interface

Status indication: Illuminated Neumann logo
Ground lift: Yes
Control: Local / Network
Mains switch: Yes
Mains voltage: 100 – 240 V (universal power supply)

Electronics – Controller

Controller design: Digital, active
DSP resolution: 32-bit audio, 64-bit double-precision processing
Crossover frequency: 80 Hz
Crossover slope: 24 dB/oct, 4th order
Automatic room calibration (MA 1): Yes
FIR phase linearization: Yes (with MA 1)
Protection circuitry: Soft clip / Peak and thermal limiters / Woofer excursion limiter / Electronics and amplifier thermal limiter
Remote control: via Ethernet and MA 1
Logo display states: Normal operation: White / Identification: Rosé / Limit / Clip / Error / Protection / Mute: Red
Logo brightness: Adjustable via MA 1

Amplifiers and Power Supply

Woofer amplifier output power: 360 W (THD+N 0.1%, limiter active)
Power supply: SMPS, 100–240 V, 50/60 Hz
Power consumption: Standby: ≤ 300 mW / Idle (100 / 230 V): 41 W / Full output (100–230 V): 510 W / Full output (240 V): 472 W / Standby mode: Automatic, 20 min (default) / Amplifier standby: User definable via software

Mechanics

Cabinet material: Wood cabinet, aluminum electronics panel
Finish and color: Front: Metallic anthracite (RAL 7021) / Back: Black (RAL 9005)
Operating conditions: +10 °C to +40 °C; <75% RH
Storage/transport conditions: –25 °C to +60 °C; <90% RH
Woofer: 2 × 265 mm (10") with black metal grille
Mounting points: 35 mm flange (top panel)
Dimensions (H × W × D): 737 × 330 × 645 mm
External net volume: 157 L
Weight: 44.5 kg

Packaging

Packed dimensions: 839 × 454 × 749 mm
Packed weight: 51.2 kg
Packaging weight (incl. cables & manuals): 6.7 kg
Packed volume: 0.285 m³

Acoustical Axis

Horizontal: 165 mm
Vertical (from bottom): 365 mm

Delivery includes:

KH 870 II
Mains cables (EU/KC)
Getting Started Guide
Operating Manual

NEUMANN KH 870 II

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