Neumann KH 870 G Active Studio Subwoofer with 7.1 Bass Management
Brand
NEUMANN
For professional studios seeking to expand, match, or maintain their legendary analog monitoring setups, the Neumann KH 870 (Variant 503947) remains one of the most respected low-frequency drivers ever engineered. Designed to perfectly complement high-performance stereo and multichannel monitoring systems, this reference-grade dual 10-inch active subwoofer delivers flawless bass extension down to an incredible 18 Hz, allowing you to make critical tracking, mixing, and mastering choices with total sonic honesty.
Neumann KH 870 G Active Studio Subwoofer with 7.1 High Definition Bass Management™
The Neumann KH 870 G is a professional active studio subwoofer designed for high-end music production, broadcast, post-production, mastering, and immersive audio monitoring environments. Featuring dual 10-inch long-throw bass drivers, powerful amplification, and an integrated 7.1 High Definition Bass Manager™, the KH 870 G delivers precise, extended low-frequency reproduction down to 18 Hz while providing flexible integration into mono, stereo, surround, and 3D audio monitoring systems. With its advanced bass management features, extensive acoustic controls, and professional connectivity, the KH 870 G provides the accuracy and reliability required by demanding audio engineers and production facilities worldwide.
Designed as a companion solution for Neumann studio monitors and other professional loudspeaker systems, the KH 870 G extends bass response, increases overall system headroom, reduces low-frequency distortion, and provides accurate reproduction of LFE channels in surround and immersive workflows. Its robust cabinet construction, advanced driver technology, and optimized bass-reflex design ensure powerful yet controlled low-frequency performance even at high playback levels.
Deep and Accurate Low-Frequency Reproduction
The KH 870 G uses two magnetically shielded 10-inch (265 mm) composite sandwich cone drivers engineered for high excursion capability, linear performance, and low distortion. The advanced driver design minimizes breakup modes while maintaining accurate piston movement, allowing the subwoofer to reproduce deep bass frequencies with exceptional clarity and transient accuracy.
Its large front-mounted bass reflex ports improve airflow efficiency, reduce compression at high output levels, and enable flexible installation close to walls or in flush-mounted studio environments. The result is tight, articulate bass response suitable for critical monitoring applications where accuracy is essential.
Integrated 7.1 High Definition Bass Management™
The built-in 7.1 High Definition Bass Manager™ provides comprehensive signal routing and bass management capabilities for professional monitoring systems ranging from mono and stereo setups to advanced 7.1 surround and immersive audio configurations. The bypassable fourth-order 80 Hz crossover allows seamless integration with main monitors while improving system headroom and reducing distortion.
Four selectable LFE routing modes provide compatibility with different professional and consumer monitoring formats, allowing engineers to configure the KH 870 G for cinema, broadcast, music production, and immersive audio applications.
Professional Monitoring Flexibility
The KH 870 G features eight balanced analog XLR inputs and outputs, providing flexible connectivity for modern professional studios. Its Sum output allows multiple subwoofers to be combined for larger monitoring systems and supports Neumann Plane Wave Bass Array™ (PWBA™) configurations for improved low-frequency consistency throughout the listening area.
Remote operation is supported through optional Neumann control accessories, allowing centralized adjustment of system volume, LFE gain, and bass management functions without accessing the rear panel controls.
Advanced Acoustic Adjustment Controls
The KH 870 G provides extensive calibration and integration options to achieve accurate performance in different studio environments. Engineers can adjust phase response, input gain, output level, low-frequency filtering, and parametric equalization to optimize the subwoofer for room acoustics and monitoring requirements.
The integrated 8-position phase control with built-in test tone, continuous low-cut control, and bypassable parametric EQ allow precise alignment with the main loudspeakers and listening environment.
Key Features
- Professional active studio subwoofer for critical monitoring.
- Dual 10-inch long-throw composite sandwich bass drivers.
- Deep bass extension down to 18 Hz.
- Integrated 7.1 High Definition Bass Manager™.
- Supports mono, stereo, surround, and immersive audio systems.
- Four selectable LFE routing modes.
- 320 W continuous amplifier power (400 W maximum).
- Maximum SPL up to 116.7 dB.
- Front-mounted bass reflex ports for flexible installation.
- Eight balanced XLR analog inputs and outputs.
- Advanced phase, EQ, and low-frequency adjustment controls.
- Supports Neumann Plane Wave Bass Array™ configurations.
- Compatible with Neumann KH Series monitoring systems.
Ideal Applications
- Professional recording studios
- Music mixing and mastering
- Film and television post-production
- Broadcast monitoring
- Surround sound production
- Immersive audio production
- Dolby Atmos monitoring environments
- LFE channel monitoring
- High-end editing suites
- Professional mastering rooms
Technical Specifications
- Product Type: Active studio subwoofer
- Model: KH 870 G
- Manufacturer Part Number: 503947
- Driver Configuration: 2 × 10-inch (265 mm) magnetically shielded drivers
- Acoustic Principle: Front bass reflex
- Frequency Response (±3 dB): 18 Hz – 300 Hz
- Frequency Response (±6 dB): 17 Hz – 600 Hz
- Maximum SPL: 116.7 dB SPL
- Amplifier Power: 320 W continuous / 400 W maximum
- Inputs: 8 × balanced analog XLR
- Outputs: 8 × balanced analog XLR
- Bass Management: 7.1 High Definition Bass Manager™
- Crossover Frequency: 80 Hz
- Phase Adjustment: 8-position control
- Power Supply: Universal switched-mode 100–240 V
- Cabinet Material: Low Resonance Integral Molding™ reinforced cabinet
- Dimensions (H × W × D): 735 × 330 × 645 mm
- External Volume: 156 litres
- Weight: 47.1 kg
- Finish: Metallic Anthracite
Package Contents
- 1 × Neumann KH 870 G Active Studio Subwoofer
- 3 × Mains cables (European, UK, and US versions)
- 1 × Operating Manual
- 1 × Getting Started Quickly Guide
Why Choose the Neumann KH 870 G?
The Neumann KH 870 G delivers the combination of power, precision, and flexibility required for professional low-frequency monitoring. Its dual-driver design, integrated 7.1 bass management, extensive calibration controls, and ultra-low-frequency extension make it an exceptional solution for studios working with stereo, surround, and immersive audio formats.
Whether used for music production, mastering, film mixing, broadcast, or advanced post-production workflows, the KH 870 G provides accurate bass reproduction that allows engineers to make confident decisions during critical listening sessions. Built to Neumann's exacting standards, it delivers reliable performance for the most demanding professional monitoring environments.
| Brands | NEUMANN |
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