Optional Digital Input Card (Dim 4) - Klein + Hummel 0810 Bedienungsanleitung

• If unbalanced source signal cables are used, they can be specially wired – see picture below. Disconnect the
cable screen from the RCA sleeve if there are still humming or buzzing sounds, and/or use the ground lift
switch on the loudspeaker. Always use balanced connections from the subwoofer to the main loudspeakers.
In addition, the 7 main channels are summed and the LFE input has a 0 / +10 dB gain stage. Finally, the test
signal is routed onto the left input for reproduction by the subwoofer and left loudspeaker (see Calibrating Phase
section).

Optional Digital Input Card (DIM 4)

The DIM 4 is an optional card with four 24-bit, 192 kHz digital input stages that can accept AES3-2003
(commonly known as AES/EBU), AES3id-2001, and S/P-DIF (with a suitable connector converter) signals 4 x XLR
and 4 x BNC connectors ensure good interconnectivity options, however only one of the sockets of an input stage
should be used at a time. The DIM 4 card converts up 4 digital audio signals into 8 channels of analog audio,
which are then routed to the channel summers and high pass filters, or the LFE routing and gain stage. Generally
the channel ordering will be as shown in the table below. With the exception of the LFE channel, the seven main
channels may be used for any broadband signal, however the output channel ordering will depend on the input
signal order.
* The LFE channel must be placed on AES or BNC input socket 2, subframe B to have access to the appropriate
LFE processing facilities.
Uncompressed PCM AES3, AES3id, and S/P-DIF digital signals generally contain two audio channels (called
"subframe A" and "subframe B") on one cable (single-wire mode). A clock input is not required because
loudspeakers are not audio sources and the clock signal is locally regenerated from data contained in the bit
stream. Always use good quality cables with the correct impedance and appropriate termination to achieve these
maximum cable lengths:
An AES3 signal (applied to an XLR connector) is point-to-point and may not be looped. An AES3id or S/P-DIF
signal can be applied to a BNC connector. The BNC input stage has an internal 75 Ω termination so T-pieces and
terminators are not required. A consequence of this is that it is not recommended to loop the signal to other
equipment using T-pieces. Digital audio errors on any one of the inputs are indicated by a flashing POWER ON
light. If this happens check the cables and connectors, and the source equipment.
Operating Manual O 810 / O 870
Source (RCA)
Unbalanced RCA to Balanced XLR Connections
Signal cable for unbalanced sources
Input Stage
1
2
3 Surround Left
4
Format Impedance
(Connector)
75 Ω
S/P-DIF (RCA)
110 Ω
AES3 (XLR)
75 Ω
AES3id (BNC)
Loudspeaker
(XLR-M)
2
Subframe A Subframe B
Left Right
Center LFE *
Surround Right
Back Left Back Right
Cable Length
up to 10 m (30')
up to 100 m (300')
up to 1000 m (3000')
English
Klein + Hummel
1
3
8