Product | KH870 | Detail Data

Free field frequency response ±6 dB 17 … 600 Hz
Free field frequency response ±3 dB 18 … 300 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 (>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
Reproduction accuracy between 50 Hz and 100 Hz: 100%, 80%, 50% of subwoofers produced ±1.20; ±0.54; ±0.28 dB
Crosstalk (1 kHz), level matching -95 dB; ±0.1 dB
LFE Gain 0 / +10 dB
Analog output(s) 8 x XLR; analog electronically balanced
Max. long term SPL with pink noise at 2.3 m, in typical listening conditions (single / pair full range) 118 dB SPL
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
Display: Bass Management on Green LED
Cabinet weight when electronics remote located 45.5 kg (100 lbs 5 oz)
Bass Extension (Hz, -6 dB) 17
Maximum output level (dB SPL) 110.7
Max. Listening Distance up to (m) 11
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
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
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
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
Output power woofer amplifier (THD+N with limiter deactivated: 10%) 400 W
Output power woofer amplifier (THD+N with limiter deactivated: 0.1%) 320 W
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
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 2 x 265 mm (10") with magnetic shielding and protecting black metal grille
Mounting points 35 mm flange on top panel
Product dimensions (height x width x depth) 735 x 330 x 645 mm (28.9" x 13" x 25.4")
External net volume 156 liters
Packed dimensions (height x width x depth), mm (inches) 860 x 470 x 770 mm (33 7/8" x 18 1/2" x 30 3/8")

Diagrams

KH 870 with O 410 Frequency Response

KH 870 with O 410 Frequency Response

KH 810/870 - Lowcut

KH 810/870 - Lowcut

KH 810/870 - Parametric - EQ

KH 810/870 - Parametric - EQ

KH 870 with O 410, Group Delay

KH 870 with O 410, Group Delay

KH 870 - Harmonic Distortion at 95 dB SP (Blue: THD, Red: 2nd harmonic, Green: 3rd harmonic)

KH 870 - Harmonic Distortion at 95 dB SP (Blue: THD, Red: 2nd harmonic, Green: 3rd harmonic)

KH 870 - Maximum SPL at 1m (Red: 3% THD, Blue: 1% THD)

KH 870 - Maximum SPL at 1m (Red: 3% THD, Blue: 1% THD)

O 410 with KH 870 Maximum SPL at 1 m (Red: 3% THD, Blue: 1% THD)

O 410 with KH 870 Maximum SPL at 1 m (Red: 3% THD, Blue: 1% THD)