From Neumann USA
MORE POWER. SAME PRECISION.
The KH 870 is an answer to the demands by offering a 7.1 High Definition Bass Manager™. The flexibility of this bypassable 7.1 bass manager means it is also compatible with all standard consumer formats from mono through to the latest 7.1 HD systems.
Eight channels of analog ensures flexible interconnectivity for modern studios. Four-mode LFE-channel processing guarantees compatibility across all formats and industries. Forth-order crossovers and flexible acoustical controls allow for seamless system integration. Built-in volume control and a hardware remote control allows for centralized system control independent of the source, and the electronics can be remote located to reduce cabling. From Mono to 3D, there are uses for the KH 870 in many different system configurations.
IMPROVING LATERAL CONSISTENCY
The latest amplifier technology and acoustical components have been used to ensure the most accurate sound reproduction possible. Robust drivers, a rock-solid cabinet, and carefully designed ports guarantee a tight, articulate, and distortion-free low frequency reproduction, even at high replay levels. Using the sum output, Plane Wave Bass Array™ (PWBA™) techniques acoustically improves lateral consistency in the listening area. The bass extends down to 18 Hz.
FLEXIBLE MOUNTING OPTIONS
The KH 870 subwoofer is designed to complement Neumann's extensive range of monitors, and can be used on its own, or daisy-chained to make larger systems capable of higher SPL. The KH 810 can be used in music, broadcast, and post production studios for tracking, mixing, and mastering. The cabinet can be positioned next to a wall or flush mounted into a wall due to the front mounted port, and can be mixed freely in multichannel systems with other loudspeakers from Neumann's range.
APPLICATIONS
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Bass extension for loudspeakers down to 18 Hz
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Increasing the maximum SPL of loudspeakers by up to 8 dB
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Decreasing harmonic and intermodulation distortion of loudspeakers
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Reproducing the LFE channel
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Reproducing the “Sub” signal of a bass managed multichannel source
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Making a Plane Wave Bass Array™ system
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Working as an extension for KH line subwoofer systems
- Free field frequency response ±6 dB
- 17 … 600 Hz
- Free field frequency response ±3 dB
- 18 … 300 Hz
- Reproduction accuracy between 50 Hz and 100 Hz
- 100%, 80%, 50% of subwoofers produced: ±1.20; ±0.54; ±0.28 dB
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 (>40 Hz)
- Bass capability
- Max. SPL in half space at 3% THD at 1m (averaged between 50 Hz and 100 Hz): 116.7 dB SPL
Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair full range): 118 dB SPL
- Analog input(s)
- 8 x XLR: analog electronically balanced
- Analog input impedance
- >13k Ohms
- Max. input level
- +19 dBu
- Common mode rejection ratio (CMRR)
- > 56 dB @ 15 kHz
- Crosstalk (1 kHz), level matching
- -95 dB; ±0.1 dB
- Volume control
- NRC 1 hardware remote or RS-232
- Volume control range; resolution
- 118 dB; 0.25 dB
- Analog dynamic range; THD+N
- 119 dB(A); <0.001% (-100 dB)
- Signal routing modes
- LFE 80+re-routing; LFE 80 Hz; LFE 120 Hz; Wide
- LFE Gain
- 0 / +10 dB
- Analog output(s)
- 8 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): 100; 114 dB SPL
- Controller design
- Analog, active
- Crossover frequency
- 80 Hz
- Crossover slope
- 24 dB/oct; 4th order
- Equalization
- Low cut 30 Hz; 0 … -12 dB
- Equalization
- Parametric EQ: Gain +4 ... -12 dB
- Equalization
- Parametric EQ: Frequency Bypass; 20 ... 120 Hz
- Equalization
- Parametric EQ: Q 1 ... 8
Phase 0; 45; 90; 135 and 0/180 deg
- Protection circuitry
- Peak and thermo limiters
- Infrasonic filter
- frequency; slope 6.5 Hz; 12 dB/oct.
- Remote control RJ45 connector
- Via NRC1 remote control (optional): volume for all channels; bass management on/off; LFE gain 0/10 dB.Via RS-232: more parameters remote controllable
- Display
- On; Normal Operation Red LED
- Display
- Limit / Clip / Errors / Protection /Boot Mute / Shut Down Mute Red LED
- Display
- Bass Management on Green LED
- Mains Power Supply
- input voltage; frequency 220-240 / 100-120 V (switchable); 50/60 Hz
- Power consumption
- (230 V / 100 V): Idle 25 W
- Power consumption
- (230 V / 100 V): Full output 550 W
- Product dimensions
- 28.9" x 13" x 25.4"
- External net volume
- 156 liters
- Product weight
- 47.1 kg (103 lbs 13 oz)
- Cabinet weight when electronics remote located
- 45.5 kg (100 lbs 5 oz)
- Packed dimensions
- 33 7/8" x 18 1/2" x 30 3/8"
Packed weight 54.3 kg (119 lbs 11 oz)
Free 3-Year Warranty
Sound Pure stands behind our products. Free three-year warranty on this item. Coverage exclusions live in Terms & Conditions, Section 27.
Level of support and expertise that simply isn't available at big-box megastores. Read the warranty →
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