Neumann KH 750 Subwoofer

The Neumann KH 750 Subwoofer is the ideal choice for smaller to medium rooms and to pair with smaller studio monitors. It has a unique and flexible Bass Manager, analog and digital inputs, four routing modes and adaptable acoustical controls to be used in many different configurations. The KH 750 can be used in music, broadcast, and post production studios for tracking, mixing, and mastering.

The Neumann KH 750 Subwoofer is a compact DSP-controlled closed cabinet subwoofer, offering deep bass in a small space. The perfect complement to KH 80 DSP, KH 120 and KH 310, the Neumann KH 750 Subwoofer has optional tools to align and operate a complete Neumann stereo system. In addition to its outstanding acoustic properties this DSP-based subwoofer offers functions for the Neumann monitors connected to its outputs regarding the interplay with the following tools:

• Automatic Monitor Alignment – Automatic room correction of stereo systems using the Neumann MA 1 measurement microphone (software for Mac/PC)
• Neumann.Control – Free iPad®-App for setup, operation, and room correction of stereo systems via guided and/or manual alignment

This also applies to all non DSP-based Neumann monitors connected (analog) to the Neumann KH 750 DSP, which enables them to make use of the subwoofer’s DSP power. The newly designed 10” long-throw driver has a strong linear working magnet system with ELFF™ technology (Extremely Linear Force Factor™). As subwoofers are usually placed on the floor, a robust grille protects the driver from accidental damage. The ultra-compact cabinet is a closed design which brings the fastest possible transient response. The two analog XLR inputs are balanced as are the two analog XLR outputs. The 192 kHz / 24-bit digital input can accept AES3 and S/P-DIF signals. There is a bypassable standby function and the switch-off time can be adjusted in the Neumann.Control iPad app.

Neumann KH 750 Subwoofer Applications

• Increasing the bass extension of the monitoring system
• Increasing the maximum SPL of loudspeakers
• Decreasing harmonic and intermodulation distortion of loudspeakers
• Reproducing the LFE channel
• Reproducing the “Sub” signal of a bass managed multichannel source
• Working as an extension for KH line subwoofer systems

Neumann KH 750 Subwoofer Features

• Compact ultra stiff wooden cabinet
  • Tough painted finish and high density rubber isolating feet
  • Excellent self-damping properties leading to minimal cabinet resonances
  • No standing wave resonances inside cabinet
  • Tight bass sound due to very low group delay
• In-house modelled long-throw bass driver with Extremely Linear Force Factor™ (ELFF™) and robust built-in grille
  • Damping of break up modes brings low distortion at high sound levels
  • Extremely linear force factor provides low harmonic distortion even at high excursions
  • Reduced air noise and improved rocking modes
  • Grille protects against mechanical damage
• 2.0/ 0.1 Bass Management
  • Stereo and externally bass managed applications
  • Bypassable 4th order crossover for maximum compatibility with consumer reproduction systems
  • Allows main loudspeakers to play louder and with lower distortion
• Four routing modes
  • Stereo 80 Hz bass management
  • External bass management
  • LFE up to 120 Hz
  • LFE full range
• XLR electronically balanced analog inputs and outputs
  • Standard interfacing to professional equipment
  • Daisy chain output for subwoofer arrays
• Wide range input gain and output level controls
  • Easier interfacing with signal sources
• 8-position phase control, continuous low cut control
  • More control in various acoustical environments
  • Easy to correct room modes
• Universal switched-mode power supply (100 … 240 V)
  • One version works in any country and robust to poor quality mains supply
• Ground lift
  • Reduced noise in electrically noisy environments and overcomes ground loops
• Low heat dissipation amplifiers with large headroom and sophisticated protection circuitry
  • Improved transient response
  • Assured reliability and safety
• Separate thermo limiter to protect the voice coil and power amplifier
  • Soft clip and excursion limiters
  • Increases system reliability
  • Allows extraction of the maximum performance from the system
• Digital input and output
  • 192 kHz, 24-bit conversion
  • BNC connector: AES3 and S/P-DIF signals
• Network connector using standard IP protocol and your existing network infrastructure
  • Loudspeaker system can be controlled via the Neumann.Control iPad®-App and the MA 1 - Automatic Monitor Alignment Software.
• Control function
  • Toggle switch for selection of operation and calibration on the device or via the network using the Neumann.Control iPad® app and the MA 1 - Automatic Monitor Alignment software.
• Standby function
  • Reduces power consumption when product is not in use.
• Features with Neumann.Control iPad® App
  • Lip-sync delay (100 ms): To align audio and video signals up to 2.5 frames at 50 Hz or 3 frames at 60 Hz
  • Time-of-flight delay (2 x 20.8 ms): To compensate for listening distance differences up to 7.2 m (12 ft 5 in)

Neumann KH 750 Subwoofer Specifications

• Acoustics:
  • Free Field Frequency Response: ±6 dB 16 Hz ... 800 Hz
  • Free Field Frequency Response: ±3 dB 18 Hz ... 750 Hz
  • Sine Wave Output with a THD < 0.5 % at 1 m in Half Space: 95 dB SPL (>70 Hz)
  • Bass Capability; Max. SPL in Half Space at 3% THD at 1m (Averaged Between 50 Hz and 100 Hz): 105.0 dB SPL
  • Self-Generated Noise at 10 cm (with Input Gain Set to 100 dB SPL for 0 dBu): < 20 dB(A) SPL
• Electronics:
  • Controller Design: Digital; Active
  • Crossover Frequency: 80 Hz Fixed or 60 ... 100 Hz via Neumann.Control
  • Crossover Slope: 24 dB/oct; 4th Order
  • Equalization: Low Cut 30 Hz; 0 ... -12 dB
  • Phase: 0; 45; 90; 135 and 0/180 deg
  • Equalization via Neumann.Control Software: 8 x Full Parametric IIR + Low / High Shelf Global Balance
  • FIR Phase Correction: For Connected Analog Loudspeakers; Linear Phase (170 Hz ... 16 kHz; +/- 45°)
  • Latency: 1.5 ms (A-D-A); 1.2 ms (D-A)
  • Delay (User Adjustable Delay Range): 0 ... 100 ms and 2 x 0 ... 20.8 ms
  • Output Power Woofer Amplifier (THD+N with Limiter Deactivated: 10%): 256 W
  • Volume Control Range; Resolution (via Neumann.Control): 0 ... -8 dB; 0.1 dB
  • Signal Routing Modes: Right; External Bass Management; 2 x LFE
  • Input Gain Control (Sensitivity): +2 ... –12 dB
  • Output Level Control (Output Level at 1 m Based on 0 dBu Input Level): 94; 100; 108; 114 dB SPL
• Analog Inputs & Outputs:
  • Analog Inputs: 2 x XLR; Analog Electronically Balanced
  • Analog Outputs: 2 x XLR; Analog Electronically Balanced
  • Analog Input Impedance: > 13 kO
  • Max. Input Level: < +24 dBu
  • CMRR: > 56 dB @ 15 kHz
  • Crosstalk (1 kHz), Level Matching: < –90 dB, ±0.1 dB
  • Analog Dynamic Range; THD+N: 119 dB(A); < 0.003% (-90 dB)
• Digital Inputs & Outputs:
  • Digital Inputs BNC (75 O): AES3; S/P-DIF
  • Digital Outputs BNC (75 O): AES3
  • A/D Converter:
    • Resolution; Design: 16 ... 24-bit DAC; ??
    • Sampling Rate: 22.05; 24; 32; 44.1; 48; 64; 88.2; 96; 176.4; 192 kHz
  • Dynamic Range A-D-A: > 120 dB(A)
  • Dynamic Range D-A: > 123 dB(A)
• Mains Power:
  • Mains Power Supply: Input Voltage; Frequency 100 ... 240 V~; 50/60 Hz
  • Power Consumption (Standby / Idle / Full Output): < 300 mW / 18 W / 410 W
  • Standby: Disabled; 90 mins (Default); User Defined in Software
• Mechanics:
  • Dimensions (H x W x D): 383 mm x 330 mm x 383 mm (15 1/8” x 13” x 15 1/8”)
  • External Net Volume: 48.4 Liters
  • Weight: 19.5 kg (43 lbs)
  • Drivers, Magnetically Shielded: Woofer 265 mm (10”)
  • Cabinet Surface Finish, Color: Custom: Painted, Metallic Anthracite (RAL 7021)
  • Baffle Cover: Included Metal Grille

Neumann KH 750 Subwoofer Includes

• 1 x Neumann KH 750 Subwoofer
• 1 x Power Cable
• 1 x Quick Start Guide
• 1 x Safety Guide
• 2 Year Warranty