| Acoustics |
| Free field frequency response ±6 dB |
16 ... 750 Hz |
| Free field frequency response ±3 dB |
18 ... 310 Hz |
| Frequency response ripple; range, deviation |
20 ... 295 Hz, ±1.5 dB |
| Self-generated noise at 10 cm (with input gain set to 100 dB SPL for 0 dBu) |
<20 dB(A) SPL |
| Minimal self-generated noise at 10 cm Self generated noise/ Input gain setting/output gain setting |
<20 dB(A) SPL |
| Sine wave output with a THD < 0.5 % at 1 m in half space |
95 dB SPL (33 - 200 Hz) |
| Bass capability: Max. SPL in half space at 3% THD at 1m (averaged between 50 Hz and 100 Hz) |
114.9 dB |
| Max. SPL for subwoofers: on floor; against the wall; in the corner |
114,9 dB; 117,9 dB; 120,9 dB |
| Dolby DARDT. Max SPL bass managed |
123 dB SPL |
| Acoustical Principle |
Bassreflex, Ports at the front |
| Analog Inputs and Outputs |
| Analog input(s) |
2 x XLR: electronically balanced |
| Analog input impedance |
>12k Ohms |
| Max. input level |
24 dBu (CH 1...3, 12); 21 dBu (CH 5...11) |
| Common mode rejection ratio (CMRR), XLR / Sub-D |
> 56 dB @ 15 kHz |
| Crosstalk (1 kHz), level matching, XLR / Sub-D |
-90 dB; ±0.1 dB |
| Remote volume control |
via MA 1 software |
| Volume control range; resolution |
0 … -∞ dB; 0.1 dB |
| Analog dynamic range; THD+N (A-D-A), XLR / SubD |
120 dB(A)(CH1...3,12); 116dB(A) (CH5...11) <0.003% (-90 dB) |
| Signal routing modes |
analog |
| Analog output(s) |
2 x XLR: electronically balanced; 1 x SUB D 25: 7 x electronically balanced; 1 x SUB D 25: 4 x electronically balanced |
| Digital Inputs and Outputs |
| Digital input(s) |
1 x BNC: Daisychain in; 1 x Ethernet: primary AoIP 1 x Ethernet: secondary AoIP |
| Digital output(s) |
7 x BNC: 11 x Monitor out; 1 x daisychain out |
| Digital converter: resolution; design |
24 Bit |
| Digital converter: sampling rate |
32 kHz..200 kHz |
| Digital internal sampling rate |
48 kHz |
| Output sampling rate |
48 kHz |
| Dynamic range A-D |
CH 1, 2=124 dBA |
| Dynamic range A-D-A (Converter) |
CH 1, 2=121.5 dBA |
| Dynamic range D-A |
CH 1, 2, 3, 12=125 dBA; CH 5...11=118 dBA |
| Digital sensitivity |
-18 dBFS = 100 dB SPL at 1 m |
| Latency ADA / DA |
2 ms (A-D-A); 4 ms (D-A AES67) |
| Delay: User adjustable delay range |
0 ... 115 ms |
| Delay: Resolution: time; distance |
20.8 µs; 0.71 mm (0.28 ") |
| Delay: Max. frames Audio-video synchronisation (lip sync) |
2 (40 ms) frames; 2.75 (33 ms) frames |
| Delay: Time-of-flight maximum distance |
Out of 115 ms, FW based |
| User Interface |
| Status Indication |
Illuminated Neumann Logo |
| Input Select |
analog / AES67 |
| Ground Lift |
Yes |
| Control |
Local; Network |
| Mains Switch |
Yes |
| Mains Voltage |
Universal Power Supply 100 V~ … 240 V~ |
| Electronics - Controller |
| Controller design |
Digital; active |
| DSP resolution |
32 Bit Audio, Processing 64 Bit double precision |
| Crossover frequency |
80 Hz |
| Crossover slope |
24 dB/oct; 4th order |
| Supports automatic room calibration via MA 1 |
Yes; Subwoofer and connected analog loudspeakers |
| FIR phase linearization |
for connected analog loudspeakers in combination with MA 1 |
| Protection circuitry |
soft clip, peak and thermo limiters; Woofer excursion limiter; thermo limiter for the electronics and amplifiers |
| Remote control |
via Ethernet and MA 1 |
| Display: On; Normal Operation |
Neumann logo “White” |
| Display: Identification |
Neumann logo “Rosé” |
| Display: Limit / Clip / Errors / Protection /Boot Mute / Shut Down Mute |
Neumann logo “Red” |
| Logo Brightness |
via MA 1 software |
| AES67 |
| 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) |
| Sample rates |
44.1 / 48 / 88.2 / 96 kHz |
| Packet times |
125 µs, 1 ms |
| PTP profiles |
IEEE1588 Default, AES67 PTP Media, IEEE 802.1AS (AVB) |
| Other PTP profiles |
SMPTE ST 2059-2 |
| Transport |
Multicast, Unicast |
| SMPTE ST 2110-30 |
Yes, two physical network ports |
| SDP transport |
Manually, SAP, RAVENNA method (RTSP) |
| Discovery |
SAP, mDNS, NMOS IS-04, RAVENNA method (advertising RTSP uri and other services) |
| Electronics - Amplifiers and Power Supply |
| Output power woofer amplifier (THD+N with limiter activated: 0.1%) |
360 W |
| Mains Power Supply: input voltage; frequency |
SMPS: 100-240 V; 50/60 Hz |
| Power consumption (230 V / 100 V): Standby |
<=300mW |
| Power consumption (100 V): Idle |
37 W |
| Power consumption (230 V / 100 V): Idle |
37 W |
| Power consumption (230 V): Idle |
36 W |
| Power consumption (100 V): Full output |
485 W |
| Power consumption (230 V / 100 V): Full output |
462 W |
| Standby |
disabled; automatic, 20 mins (default) |
| Amplifier Standby |
Disabled; user defined in software |
| Mechanics |
| 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); <75% RH, non-condensing |
| Transport/storage conditions |
-25° C to +60° C (-13° F to 140° F); <90% RH; non-condensing |
| Woofer |
2 x 265 mm (10") with protecting black metal grille |
| Mounting points |
35 mm flange on top panel |
| Product dimensions (height x width x depth) |
737 x 330 x 645 mm (28.9" x 13" x 25.4") |
| External net volume |
157 liters |
| Product weight |
44.5 kg (98 lbs 2 oz) |
| Packed dimensions (height x width x depth), mm (inches) |
839 x 454 x 749 (33" x 17.9" x 29.5") |
| Packed weight |
51.2 |
| Packaging weight inc. Cables and manuals |
6.7 |
| Packed cube |
0.285 m³ |
| Delivery includes |
1 x KH 870 II AES67 Mains cables EU/KC; UK; US; China 1 x Getting Started Quickly guide 1 x Operating Manual |
| Acoustical Axis horizontal |
165 mm |
| Acoustical Axis vertical (from bottom) |
365 mm |