12
| KH 120
Cleaning and maintaining the KH 120
CAUTION
Damage to the product caused by liquids!
Liquids entering the product can cause a short-circuit in the electronics and damage or even destroy the product .
X
Keep all liquids away from the product!
X
Before cleaning, disconnect the product from the mains power supply .
X
Use a soft, dry, and lint-free cloth to clean the product .
Troubleshooting
Problem
Cause
Solution
The Neumann logo is off, no sound
is heard from the KH 120
The KH 120’s main fuse
has blown .
Have the product checked by an
authorized Neumann service partner .
The Neumann logo is off or not
clearly visible, but sound is heard
from the KH 120
The Neumann logo is
switched off or dimmed .
Switch on the Neumann logo
and switch off the dimming (see page 11) .
There is hum or buzz coming from
the KH 120 when the audio cable is
connected .
Bad cabling or ground
loop in the installation .
Check all cabling to eliminate the cause
of the problem, change from unbalanced
to balanced cabling, or use the ground lift
switch (see page 11) .
For further information, please refer to the “Questions & Answers” section on the product page at www .neumann .com .
Specifications
Acoustics
-
3 dB free field frequency response
52 Hz to 21 kHz, ±3 dB
Pass band free field frequency response
54 Hz to 20 kHz, ±2 dB
Self-generated noise
(with input gain set to 100 dB for 0 dBu)
<20 dB(A) at 10 cm
Total harmonic distortion < 0 .5 % at 95 dB SPL at 1 m
>100 Hz
Max . SPL in full space / calc . in half space at 3 % THD
at 1 m, averaged between 100 Hz and 6 kHz
105 .1 dB SPL / 111 .1 dB SPL
Bass capability:
Max . SPL in half space with 3 % THD at 1 m,
averaged between 50 Hz and 100 Hz
104 .8 dB SPL
Max . short term SPL with IEC-weighted noise
(IEC 60268-5) at 1 m, in typical listening conditions
107 dB(C) SPL
Max . short term SPL with music material at 2 .3 m,
in typical listening conditions (pair)
97 dB(C) SPL (full range)
104 dB(C) SPL (with subwoofer)
Max . long term SPL with pink noise at 2 .3 m,
in typical listening conditions (single/pair)
88/93 dB(C) SPL (full range)
89/94 dB(C) SPL (with subwoofer)
Electronics
Woofer amplifier, continuous (peak) output power
50 W (80 W), THD and noise < 0 .1 %
with deactivated limiter
Tweeter amplifier, continuous (peak) output power
50 W (80 W), THD and noise < 0 .1 %
with deactivated limiter
Controller design
analog, active
Crossover frequency; crossover slope
2 .0 kHz; 24 dB/oct ., 4
th
order
EN
