User Manual

KH 120 | 17
Problem Cause Solution
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 15).
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
ACOUSTICAL CONTROLS switches BASS: 0, -2.5, -5, -7.5 dB
LOW-MID: 0, -1.5, -3, -4.5 dB
TREBLE: +1, 0, -1, -2 dB
Protection circuitry Limiter: low, high
Infrasonic filter frequency; slope 30 Hz; 6 dB/oct.
Analog input
Input type XLR, electronically balanced
Input Impedance depending on the position of the OUTPUT LEVEL
switch 8 :
114 dB SPL 20 kΩ
108 dB SPL 10 kΩ
100 dB SPL 20 kΩ
94 dB SPL 10 kΩ
Input gain control (sensitivity) 0 dB to -15 dB
OUTPUT LEVEL switch 94, 100, 108, 114 dB SPL
EN