Neumann KH 870 II Flagship DSP-Controlled Subwoofer

Neumann KH 870 II Flagship DSP-Controlled Subwoofer with Multichannel Bass Management

The Neumann 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. Analogue 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 analogue 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, optimising 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, analogue 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 analogue 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 analogue input channels and another two Sub D25 connectors for up to 11 analogue 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. 

Neumann KH 870 II Features:

• Bass extension of the monitoring system down to 16 Hz 
  
• Increasing the maximum 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, we offer MA 1 Multichannel Extension option. 
  
• MA 1 integration of analogue KH Line speakers, enough DSP power for an entire multichannel system up to 7.1.4.