Neumann KH750 D G Aktiv DSP Subwoofer

DSP power for all

The compact KH 750 DSP is the ideal choice for smaller rooms and smaller studio monitors.
It has a unique and flexible Bass Manager (2.0/0.1), analog and digital inputs,
four routing modes and adaptable acoustical controls to be used in many different configurations.

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 KH 750 DSP, which enables
them to make use of the subwoofer’s DSP power.

More about the KH 750 DSP

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.

The KH 750 DSP can be used in music, broadcast, and post production studios for tracking, mixing, and mastering.
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

THD+N: analog, digital  < -100 dB; < -90 dB
Free field frequency response ±6 dB  16 ... 800 Hz
Free field frequency response ±3 dB  18 … 750 Hz
Self-generated noise at 10 cm (with input gain set to 100 dB SPL for 0 dBu)  <20 dB(A) SPL
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
Analog input(s)  2 x XLR: analog electronically balanced
Analog input impedance  >13k Ohms
Max. input level  < +24 dBu
Common mode rejection ratio (CMRR)  > 56 dB @ 15 kHz
Crosstalk (1 kHz), level matching  < -90 dB; ±0.1 dB
Volume control  via Neumann.Control software
Volume control range; resolution  0 … -8 dB; 0.1 dB
Analog dynamic range; THD+N  119 dB(A); <0.003% (-90 dB)
Signal routing modes  Right; External Bass Management; 2 x LFE
Analog output(s)  2 x XLR; analog electronically balanced
Input gain control (sensitivity)  +2 ... -12 dB
Output level control (output level in 1 m based on 0 dBu input level)  94; 100; 108; 114 dB SPL
Digital input(s)  BNC (75 O): AES3; S/P-DIF
Digital output(s)  BNC (75 O): AES3
Digital converter: resolution; design  16 … 24-bit DAC; ??
Digital converter: 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)
Digital sensitivity  -18 dBFS = 100 dB SPL at 1 m
Latency  1.5 ms (A-D-A linear phase); 1.2 ms (D-A linear phase)
Delay: User adjustable delay range  0 ... 100 ms and 2 x 0 ... 20.8 ms
Delay: Resolution: time; distance  0.1 ms; 3.44 cm (1 3/8”)
Delay: Max. frames Audio-video synchronisation (lip sync)  2.5 (40 ms) frames; 3 (33 ms) frames
Delay: Time-of-flight maximum distance  2 x 7.16 m (23' 5")
Controller design  Digital; active
Crossover frequency  80 Hz
Crossover slope  24 dB/oct; 4th order
Phase  0; 45; 90; 135 und 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°)
Protection circuitry  Driver (thermo limiter); Electronics (temperature limiter); Amplifier (peak limiter, temperature limiter, temperature protection and overcurrent protection); Power supply (temperature limiter and overcurrent protection)
Infrasonic filter: frequency; slope  17.5 Hz; 12 dB/oct.
Remote control  Neumann.Control software via an RJ45 connector carrying standard IP data
Display: On; Normal Operation  Green LED
Display: Identification  Amber LED
Display: Limit / Clip / Errors / Protection /Boot Mute / Shut Down Mute  Red LED
Display: Bass Management on  Green LED
Output power woofer amplifier (THD+N with limiter deactivated: 10%)  256 W
Mains Power Supply: input voltage; frequency  100-240V; 50/60 Hz
Power consumption (230 V / 100 V): Standby  <300 mW
Power consumption (230 V / 100 V): Idle  18 W
Power consumption (230 V / 100 V): Full output  410 W
In-rush current (Peak)  30 A @230 VAC
Standby  Disabled; 90 mins (default); user defined in software
Cabinet material  Wood cabinet, aluminum electronics panel
Cabinet surface finish; color (front / back)  Painted; metallic anthracite (RAL 7021) / black (RAL 9005)
Operating conditions  +10° C to +40° C (+50° F to +104° F); <90% RH, non-condensing
Transport/storage conditions  -25° C to +70° C (-13° F to 158° F); <90% RH; non-condensing
Woofer  265 mm (10") with protecting black metal grille
Product dimensions (height x width x depth)  383 x 330 x 383 mm (15 1/8" x 13" x 15 1/8")
External net volume  48.4 liters
Product weight  19.5 kg (43 lbs)