Neumann KH 870 II Two 10-Inch DSP-Controlled Active Subwoofer with Multi-Channel Bass Management

ITEM #: NEUM-KH-870-II MFG #:

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Free Shipping with $49 Minimum Order

List Price:

$6,799.00

Our Price:

$5,799.00

Availability: Ships Factory Direct, Typically in 3-10 Business Days
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  • Shipped truck freight.


- Overview

Flagship DSP-Controlled Subwoofer with Multichannel Bass Management

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 (ELFFT) 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).

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).

Field of Use:
- Recording
- Broadcast
- Music creation
- Mastering

  • 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
    • Increasing the max SPL of the entire system
    • Decreasing harmonic and intermodulation distortion of loudspeakers
    • MA 1 Ready for perfect alignment of the entire system and seamless subwoofer integration. For multichannel setups, see MA 1 Multichannel Extension option.
    • MA 1 integration of analog KH Line speakers, enough DSP power for an entire multichannel system up to 7.1.4.
     
  • Specifications:

      Acoustics
    • Free Field Frequency Response ±6dB: 16Hz - 750Hz
    • Free Field Frequency Response ±3 dB: 18Hz - 310Hz
    • Self-Generated Noise at 10cm (with input gain set to 100dB SPL for 0dBu): <20dB (A) SPL
    • Minimal Self-Generated Noise at 10cm (Self generated noise/Input gain setting/output gain setting): <20dB (A) SPL
    • Sine Wave Output with a THD <0.5% @ 1m in Half Space: 95dB SPL
    • Bass Capability: Max. SPL in half space @ 3% THD at 1m: 114.9dB
    • Max. SPL for Subwoofers: On Floor: 114.9dB; Against the Wall: 117.9dB; In the Corner: 120.9dB
    • Dolby DARDT. Max SPL Bass Managed: 123dB SPL

      Analog Inputs/Outputs
    • Analog Inputs: 2x XLR: electronically balanced; 1x SUB-D 25: 8x electronically balanced; 1x SUB-D 25: 4x electronically balanced
    • Analog Input Impedance: >12kΩ
    • Max. Input Level: 24dBu (CH 1 to 3, 12); 21dBu (CH 5 to 11)
    • Common Mode Rejection Ratio, XLR/Sub-D: >56dB @ 15kHz
    • Crosstalk (1kHz), Level Matching, XLR/Sub-D: -90dB; ±0.1dB
    • Remote Volume Control: Via MA 1 software
    • Volume Control Range; Resolution: 0dB - -8dB; 0.1dB
    • Analog Dynamic Range; THD+N (ADA), XLR/SubD: 120dB (A)(CH1 to 3,12); 116dB (A)(CH5 to 11) <0.003% (-90dB)
    • Signal Routing Modes: Analog
    • Analog Outputs: 2x XLR: electronically balanced; 1x SUB D-25: 7x electronically balanced; 1x SUB D-25: 4x electronically balanced

      Digital Inputs/Outputs
    • Digital Inputs: 1x BNC: Daisychain in
    • Digital Outputs: 7x BNC: 11x Monitor out; 1x Daisychain out
    • Digital Converter Resolution; Design: 24-Bit
    • Digital Converter Sampling Rate: 32kHz - 200kHz
    • Digital Internal Sampling Rate: 48kHz
    • Output Sampling Rate: 48kHz
    • Dynamic Range AD: CH 1, 2, 3, 12=124dBA; CH 5 to 11=121dBA
    • Dynamic Range ADA (Converter): CH 1, 2, 3, 12=121.5dBA; CH 5 to 11=116.2dBA
    • Dynamic Range DA: CH 1, 2, 3, 12=125dBA; CH 5 to 11=118dBA
    • Digital Sensitivity: -18dBFS = 100dB SPL at 1m
    • Latency ADA/DA: 2ms (ADA)
    • Delay: User Adjustable Delay Range: 0ms - 115ms

      User Interface
    • Ground Lift: Yes
    • Control: Local; Network
    • Mains Switch: Yes
    • Mains Voltage: Universal Power Supply 100V~ - 240V~

      Electronics - Controller
    • Controller Design: Digital; active
    • DSP Resolution: 32-Bit Audio, Processing 64-Bit double precision
    • Crossover Frequency: 80Hz
    • Crossover Slope: 24dB/oct; 4th order
    • Supports Automatic Room Calibration via MA 1: Yes
    • Remote Control: via Ethernet and MA 1

      Electronics - Amplifiers/Power Supply
    • Output Power Woofer Amplifier (THD+N with limiter activated: 0.1%): 360W
    • Mains Power Supply: 100V - 240V; 50/60Hz
    • Power Consumption - 230V/100V:
      - Standby: <=300mW
      - Idle: 41W
      - Full Output: 510W
    • Power Consumption - 100V:
      - Idle: 41W
      - Full Output: 510W
    • Power Consumption - 230V: Idle: 41W
    • Power Consumption - 240V: Full Output: 472W
    • Standby: Automatic, 20 mins (default)
    • Amplifier Standby: Disabled; user defined in software

      Mechanics
    • Cabinet Material: Wood cabinet, aluminum electronics panel
    • Operating Conditions: 50°F - 104°F; <75% RH, non-condensing
    • Transport/Storage Conditions: -13°F - 140°F; <90% RH; non-condensing
    • Woofer: 2x 10" with protecting black metal grille
    • Mounting Points: 35mm flange on top panel
    • Dimensions (HxWxD): 28.9" x 13" x 25.4"
    • Weight: 98lbs 2oz
    • Packed Dimensions (HxWxD): 33" x 17.9" x 29.5"
     
  • Item Includes:

    • 1x KH 870 II Mains cable
    • 1x Getting Started Quickly guide
    • 1x Operating Manual
     
  • GTIN:

    0615104387607
     

- Required Accessories

    California Residents:
    WARNING:
    Cancer and Reproductive Harm - www.P65Warnings.ca.gov