Neumann - KH 870 II
The Neumann KH 810 II is an active studio subwoofer designed for professionals who want to get to the heart of low frequencies with surgical control and calibrated power. Behind its twin 10" drivers and Class D amplification, it descends to 16 Hz with a precision that leaves no grey area in your mix. Designed for medium to large cabs, it incorporates an advanced DSP engine and connects to the MA 1 correction system to shape your acoustics like a tailor makes a bespoke suit. Its flexible routing modes and bass management up to 7.1.4 make it a real cornerstone for stereo, surround or immersive set-ups. In short, a companion capable of making invisible vibrations tangible.
Presentation
The secret of this precision lies in its integrated DSP engine, designed to align your system and guarantee total coherence between your KH speakers and this subwoofer. Combined with the MA 1 calibration software, it becomes the perfect tool for transforming a capricious room into a reliable working environment. Whatever the booth, you'll enjoy bass that doesn't swell, that doesn't crush, and that remains transparent, as if you'd moved from one room to another without moving your chair.
One of the Neumann KH 810 II's major assets is its role as a hub in multichannel configurations. Thanks to its Bass Manager, it can handle set-ups ranging from simple stereo to 7.1.4 surround. So you can go from a classic mixing project to an immersive Dolby Atmos mix without having to reconfigure your whole rig. The subwoofer becomes the centrepiece, the one that distributes and stabilises the bass, keeping your listening clear and reliable.
When it comes to flexibility, Neumann has thought big: the KH 810 II incorporates various routing modes, with an adjustable high-pass filter and options for 120 Hz LFE or full-range LFE. There are also ultra-precise phase controls, ranging from 0° to 135° with full inversion, to suit any studio layout. Whether you're in an ambitious home studio or a large broadcast control room, you'll always have absolute control over bass integration.
And as if that wasn't enough, the subwoofer offers several selectable output levels, from 94 to 114 dB SPL, to adapt to the dynamics of your environment. You can go from low-level analytical listening to a muscular demonstration in the blink of an eye, without ever sacrificing precision. In the studio, it's an enormous gain in comfort: you work for long periods without tiring and you retain total confidence in your mixing, whether for music, film or television.
Other features
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Neumann KH 810 II
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Active studio subwoofer controlled via DSP
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Country of production: Czech Republic
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Series: KH II
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Bass reflex, front ports
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Bass management :
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Stereo, Surround & Immersive up to 7.1.4
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Routing modes: 80 Hz / external / LFE 120 Hz / LFE full range
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Amplification: Class D
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Driver: 2x ∅ 10" (265 mm)
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Crossover: adjustable high-pass 30 Hz, 0 ⭢ -12 dB (4ᵉ order bypassable)
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SPL: 95 dB SPL (42 ⭢ 200 Hz, 0.5% THD), 115 dB SPL (50 ⭢ 100 Hz, 3% THD)
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Input gain settings: 2 dB ⭢ -12 dB
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Frequency response (±3 dB): 18 ⭢ 310 Hz
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Frequency response (±6 dB) : 16 ⭢ 750 Hz
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Self-noise at 10 cm: <20 dB(A) SPL
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Controls:
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Output level: 94 / 100 / 108 / 114 dB SPL
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Phase, low cut, local or network control
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Phase extension: 0°, 45°, 90°, 135° and 0/180° inversion
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Connectors :
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Analogue inputs: 2x balanced XLR + 2x Sub-D 25
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Analogue outputs: 2x balanced XLR + 2x Sub-D 25
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Digital input: BNC
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Digital outputs: 7x BNC
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Network: RJ45 port
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Protection :
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Peak & thermal limiter
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Amplifier & power supply protection
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soft clip, excursion limiter
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Power supply: 240 V AC mains
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Cabinet: ultra-rigid wood, internally damped
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Metal protective grille
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Colour: anthracite
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Supplied with: safety guide & quick start
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Dimensions: 737 x 645 x 330 mm
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Weight: 44.5 kg
To find out more...
To make the most of this subwoofer, you can rely on Neumann accessories such as the MA 1 calibration system, or high-quality audio cables to preserve the integrity of the signal. The whole system becomes an ecosystem designed to last, a bit like a trusted instrument that you keep for the rest of your career.
And if you want to take the experience even further, combine the KH 810 II with other speakers from the KH range, from the KH 120 II to the KH 420. You'll have a coherent, modular system, calibrated to meet the demands of modern production, whether you're in an independent studio or a large audiovisual structure.
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Spotlight on
A legendary brand for decades, present in all the major recording studios, Neumann is a guarantee of high quality and professionalism. The Beatles, Natalie Cole, Celine Dion, Bryan Adams and Beyoncé... all use this exceptional brand with the famous U87, and the TLM49 at the top of the list. In home studio, the TLM103 and TLM102 condenser microphones are the most popular. For studio sound on stage opt for the KMS105. In recent years, Neumann has also offered the high-end KH80, KH120 and KH310 monitors.
