KH 870 G Subwoofer monitor speaker Neumann

Applications

• Bass extension for loudspeakers down to 18 Hz

• Increasing the maximum SPL of loudspeakers by up to 8 dB

• Decreasing harmonic and intermodulation distortion of loudspeakers

• Reproducing the LFE channel

• Reproducing the “Sub” signal of a bass managed multichannel source

• Making a Plane Wave Bass Array™ system

• Working as an extension for KH line subwoofer systems

(1)Computer mechanically modeled cabinet design using Low resonance Integral Molding™ (LRIM™) materials

• Wooden cabinet with a tough painted finish and high density rubber isolating feet

• Excellent self-damping properties leading to minimal cabinet resonances

• No standing wave resonances inside cabinet

• Reduced cabinet resonances

(2) In-house modelled long-throw composite sandwich cone bass driver with Extremely Linear Force Factor™ (ELFF™), magnetic shielding, flow optimized die cast basket and robust built-in grille

• Damping of break up modes brings low distortion at high sound levels

• Linear pistonic motor gives a very low harmonic distortion even at high excursions

• Reduced air noise and improved rocking modes

• Grille protects against mechanical damage

(3) Large high-capacity flow-optimized bass reflex ports

• Fast bass transient response

• Reduced bass compression at high output levels

• Can be flush mounted

(4) XLR electronically balanced analogue inputs and outputs

• Standard interfacing to professional equipment

• Daisy chain output for subwoofer arrays

7.1 High Definition Bass Management

• Compatible with all systems from mono to 3D

• Bypassable 4th order 80 Hz active crossover for maximum compatibility with consumer reproduction systems

• Allows main loudspeakers to play louder and with lower distortion

(5) Remote control

• NRC 1 and SEA 1 hardware remote control

• RS-232 control possible

(6) LFE gain

• 0 and +10 dB

Four routing modes

• LFE to subwoofer and left/right

• LFE to subwoofer only up to 80 Hz

• LFE to subwoofer only up to 120 Hz

• LFE to subwoofer with no filtering – for daisy chaining subwoofers and external signal processing systems

(7) Wide range input gain and output level controls

• Easier interfacing with signal sources

8-position phase control (with built in test tone), continuous low cut control and parametric equalizer

• More control in diverse acoustical environments

• Parametric equalizer is bypassable if not needed

(8) Bass Management controls

• Bypassable

• Independent control of bass management bypass for front and back channels

• System volume control on/off

(9) Universal switched-mode power supply (100 … 240 V)

• One version works in any country and robust to poor quality mains supply

• Electronics can be remotely powered on with two modes of operation (0 V and 12 V trigger)

(10) Ground lift

• Reduced noise in electrically noisy environments and over-comes ground loops

(11) Sum output

• Larger systems and Plane Wave Bass Arrays™ maybe constructed using the Sum output

(12) Low heat dissipation amplifiers with large headroom and overheat limiting

• Improved transient response

• Assured reliability and safety

Separate fast acting thermo limiter to protect the voice coil and power amplifier

• Soft clip and excursion limiters

• Increases system reliability

• Allows extraction of the maximum performance from the system

(13) Installation flexibility

• Remoteable electronics (REK 3) for ease of installation, less cabling, and convenience of use