Neumann KH 750 Compact DSP Controlled Closed Cabinet Subwoofer

The compact KH 750 DSP is the ideal choice for smaller rooms and smaller studio monitors, such as the KH 80 DSP. It has a unique and flexible 2.0/0.1 Bass Manager allowing the subwoofer to be used in many different system configurations. On the back panel there are analog and digital inputs and outputs, four routing modes and adaptable acoustical controls to allow for seamless system integration. The Neumann.Control software gives access to many additional functions inside the subwoofer. The KH 750 DSP can be used in music, broadcast, and post production studios for tracking, mixing, and mastering.

Key Features

• Active DSP Subwoofer
• 10" driver, 48.4 liters
• 256 W, 105 dB SPL
• 18 - 300 Hz, metallic anthracite

Technical Specifications

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
Reproduction accuracy between 50 Hz and 100 Hz: 100%, 80%, 50% of subwoofers produced
n/a
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
Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair full range)
n/a
Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair with subwoofer)
n/a
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 -? 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 ): AES3; S/P-DIF
Digital output(s)
BNC (75 ): AES3
Digital converter: resolution; design
16 - 24-bit DAC;
Digital converter: sampling rate
48 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 fixed or 60 ... 100 Hz via Neumann.Control
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
6.5 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)