TO SHIELD
3, COLD
2,
HOT
JUMPER
FRO
M COLD
Figure 6.7: Unbalanced connection of input
Next to its input connector, each channel provides an individual XLR-type connector (OUTPUT
A or OUTPUT B), which is connected in parallel to allow for comfortably daisy-chaining the
audio signal for the connection of additional audio equipment.
Figure 6.8: Balanced connection of output (Daisy-Chain)
Audio input cabling for Euroblock-type connectors
Inputs are electronically balanced. Whenever possible, using balanced audio signal feeds at
the input of the power amplifier is always preferred. Unbalanced connections should only be
used if the cables are very short and no interfering signals are to be expected in the vicinity of
the power amplifier. In this case, bridging the screen (shielding) and the pin of the inverting
input inside of the connector is mandatory. Otherwise, a 6 dB drop in level could result. Due
to their immunity against external interference sources, such as dimmers, mains connections,
HF-control lines, etc., using balanced cabling and connections is always preferable.
Figure 6.9: Balanced/unbalanced connection of input
6.10.2
L Series and C Series FIR-Drive Power
Amplifiers
Controls, indicators and connections | en 23
Bosch Sicherheitssysteme GmbH Installation manual 2017.10 | 02 | F.01U.327.801
To Next Page
Loading...
Need help?
General
