Cleaning And Maintaining The Kh 120; Troubleshooting; Specifi Cations - Neumann.Berlin KH 120 Manuel Utilisateur

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.
Keep all liquids away from the product!
Before cleaning, disconnect the product from the mains power supply.
Use a soft, dry, and lint-free cloth to clean the product.

Troubleshooting

Problem
The Neumann logo is off , no sound
is heard from the KH 120
The Neumann logo is off or not
clearly visible, but sound is heard
from the KH 120
There is hum or buzz coming from
the KH 120 when the audio cable is
connected.
For further information, please refer to the "Questions & Answers" section on the product page at www.neumann.com
Specifi cations
Acoustics
−3 dB free fi eld frequency response
Pass band free fi eld frequency response
Self-generated noise
(with input gain set to 100 dB for 0 dBu)
Sine wave output with < 0.5% THD at 1 m
Max. SPL in half space with 3% THD at 1 m,
averaged between 100 Hz and 6 kHz
Electronics
Woofer amplifi er, continuous (peak) output power
Tweeter amplifi er, continuous (peak) output power
Controller design
Crossover frequency; crossover slope
Acoustical controls
EN
Protection circuitry
Infrasonic fi lter frequency; slope
12 | KH 120
Cause Solution
The KH 120's main fuse Have the product checked by an
has blown. authorized Neumann service partner.
The Neumann logo is Switch on the Neumann logo
switched off or dimmed. and switch off the dimming
(see page 11) .
Bad cabling or ground Check all cabling to eliminate the cause
loop in the installation. of the problem, change from unbalanced
to balanced cabling, or use the ground
lift switch (see page 11).
52 Hz to 21 kHz, ±3 dB
54 Hz to 20 kHz, ±2 dB
<20 dB(A) at 10 cm
95 dB SPL (>100 Hz)
111.1 dB SPL
50 W (80 W), THD and noise <0.1%
with deactivated limiter
50 W (80 W), THD and noise <0.1%
with deactivated limiter
analog, active
2.0 kHz; 24 dB/oct., 4
Bass:
Low-mid:
Treble:
Limiter: low, high
30 Hz; 6 dB/oct.
th order
0, −2.5, −5, −7.5 dB
0, −1.5, −3, −4.5 dB
+1, 0, −1, −2 dB