Neumann KH750 DSP Active DSP Subwoofer

Neumann KH750 DSP Active DSP Sub-woofer

The Neumann KH750 DSP active DSP sub-woofer is a studio quality sub that features a 10" driver, deep bass response and DSP engine optimizes output to achieve reference class sound. 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 sub-woofer 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 sub-woofer. The KH 750 DSP can be used in music, broadcast, and post production studios for tracking, mixing, and mastering.

The newly designed 10” long-throw driver has a large magnet, linear motor design and a very stiff pressed steel basket. As subwoofers are usually placed on the floor, a robust grille protects the driver from accidental damage. The well-braced cabinet is a sealed designed 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 Neumann.Control.

Neumann KH750 Features

• Decreased 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

Specifications

• THD+N: < -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
• 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 Ω): AES3; S/P-DIF
• Digital output(s): BNC (75 Ω): AES3
• Digital converter: resolution; design : 16 … 24-bit DAC; Δ∑
• 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 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°)
• 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
• 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)