Neumann.Berlin KH 420, Руководство по эксплуатации

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| KH 420
X
Use an RCA-XLR adapter (not supplied) to connect unbalanced cables (e.g. RCA cables).
X
Use the following wiring if you want to make your own RCA-XLR adapter:
Wiring Pin Signal
1 Audio ground
2
3 Signal −
If there is a humming sound from the loudspeaker, activate ground lift to disconnect
pin 1 of the ANALOG INPUT socket (XLR)
H
from the loudspeaker’s chassis ground.
Connecting digital signals to the KH 420 with the DIM 1 installed
X
Always use good quality cables with the correct impedance and appropriate termina-
tion to avoid signal drop outs and to achieve the maximum cable lengths shown below:
Signal (connector) Impedance Cable length Connection method
AES3 (BNC) 75 Ω up to 100 m
(300') directly to the AES3 INPUT
socket (BNC)
J
of the DIM 1
AES3 (XLR) 110 Ω up to 100 m
(300') directly to the AES3 INPUT
socket (XLR)
I
of the DIM 1
S/P-DIF (RCA) 75 Ω up to 10 m
(30') via an adapter (RCA-BNC)
to the AES3 INPUT socket
(BNC)
J
or
via an adapter (RCA-XLR)
to the AES3 INPUT socket
(XLR)
I
of the DIM 1
X
Connect the digital AES3 or S/P-DIF-output signal of your audio source to the AES3
INPUT socket
I
or
J
of the DIM 1. See fi gure below.
The DIM 1 only supports non-encoded AES3 and S/P-DIF signals. Encoded sig-
nals such as MP3, DTS or Dolby Digital are not supported.
X
Make an appropriate setting (“DIGITAL A” or “DIGITAL B”) on the SIGNAL SELECT
rotary switch
L
. The setting depends on the signal channel order and the loudspeaker
position.
Only one cable is needed for uncompressed AES3 and S/P-DIF digital signals
(single-wire mode). They contain two audio channels: “subframe A” and “sub-
frame B”. Usually, the audio channels are:
Subframe A Subframe B
Left Right
Center LFE
Surround left Surround right
Back left Back right
A clock input is not required because loudspeakers are not audio sources and the
converters are clocked to a very stable internally generated clock source.
DIM 1 DIM 1 DIM 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 M M M M M M M M M M M M M M M M M M M M M M M M M M M M M M I I I I I I I I I I I I I I I I I I D D D D D D D D D D D D D D D D D D D D D D D D D D D
Connecting
AES3 cables
Connecting
unbalanced cables
EN