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Neumann KH 750 AES67
Features
- Redundant AES67 audio network interface
- Deep bass in a small space
- The perfect complement to KH 80 DSP, KH 120 and KH 310
- Optional tool to align and operate a complete Neumann stereo system
Description
The compact Neumann KH 750 AES67, as a product variant of the KH 750 DSP, is the ideal subwoofer for routing audio over IP in an existing AES67 studio infrastructure all the way to the loudspeakers in a redundant and lossless manner. It thus serves as the link between the studio’s digital ST2110/AES67 data stream and all KH line monitors.
By adding more KH 750 AES67 subwoofers, stereo systems of any size can be realised. The KH 750 AES67 adds AES67 connectivity and retains all other features of the KH 750 DSP such as the unique and flexible Bass Manager as well as analog and digital inputs, four routing modes, and adaptable acoustical controls to be used in many different configurations and setups.
The KH 750 AES67 model variant offers newly integrated redundant AES67 audio network ports that are fully compliant with broadcast standards such as ST 2110 and ST 2022-7 redundancy. At the same time, the KH 750 AES67 is compatible with DANTE®-generated AES67 network streams.
The KH 750 AES67 thus enables all pairs of KH line monitors to be integrated into a redundant AES67 IP network.
Key Features:
More About the KH 750 AES67
In conjunction with the Automatic Monitor Alignment, which is available for Mac and PC, the entire system can be precisely calibrated to suit the room character. This includes the analog monitors connected to it, which can be perfectly adapted to the room by correcting both amplitude and phase via the powerful DSP integrated in the subwoofer.
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 ensures 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/PDIF signals. If no signal is present for more than 90 minutes, the auto bypass function reduces power consumption to 0.3 W.
The KH 750 AES67 can be used in music, broadcast, and post production studios for tracking, mixing, and mastering.
Applications
Bass extension of a stereo monitoring system Increasing the maximum SPL of the loudspeaker system Decreasing harmonic and intermodulation distortion of the loudspeaker system Reproduction of the LFE channel Reproduction of the “Sub” signal of a bass managed multichannel source Extension for KH line subwoofer systems AES67/ST 2110 network integration
Specifications
AES67 Audio-over-IP Interface | Fully redundant AES67 ST2110 compliant audio network interface; 2 Fast Ethernet 100Base-TX (IEEE 802.3) RJ-45 connectors; Physical redundant network (ST 2022-7) |
AES67 Audio-over-IP input word length | 24 bits |
AES67 Audio-over-IP input sampling rate | 44.1 / 48 / 88.2 / 96 kHz |
AES67 Audio-over-IP input connection management | RAVENNA, NMOS IS-04 (Discovery & Registration) and NMOS IS-05 (Connection Management) |
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 … -∞ 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 |
Crossover slope | 24 dB/oct; 4th order |
Phase | 0; 45; 90; 135 und 0/180 deg |
Equalisation: 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, aluminium electronics panel |
Cabinet surface finish; colour (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 litres |
Product weight | 19.5 kg (43 lbs) |
In The Box
- 1x KH 750 AES67
- 4x mains cables (EU/KC, UK, US, CCC)
- 1x Quick guide
- 1x Safety booklet
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Details
- Product: Neumann KH 750 AES67
- Manufacturer: Neumann
- Model: 508927
- SKU: 508927
- RM Product #: 89054