19
d:series amplifiers
manual
connections, pinout and cabling
outputs and bridging
4.3 - outputs (euroblock)
speaker outputs
4.4 - bridging
The d:series amplifier is supplied with 2-pin Euroblock connectors for each amplified output channel.
Compatible plug connectors are part of the delivery. To guarantee the operating safety and the proper
function, sonible recommends to use only prebuilt or professionally built speaker cables with minimum
cable cross-sections of 1.5mm
2
.
The amplifier offers to bridge channels in pairs of two. The main benefit of bridging is a doubling of output
voltage. Therefor you have to route one input signal to two amplifier channels, whereas one amplifier
channel is fed by the original signal and the other channel with the phase reversed counterpart. When
using digital inputs, the following steps have to be performed:
Step 1:
When using bridged mode, the same input source
has to be routed to both output channels in the
routing menu (e.g. input channel 1 to output
channels 1+2). The second input channel has to
be phase inverted in the routing sub menu of the
amplifier as shown in the graphic.
Further information about routing can be found in
chapter 5.3 ‘routing screen’ (page 28).
Step 2:
The 2-pin output speaker cable has to be connected with one pin to the plus
pole of the first channel (1+) and with the second pin the plus pole of the
second channel (2+) as shown in the graphic on the left.
If analog inputs are used for bridging amplifier channels you have to ensure
that the input signals comply similar to the description mentioned above. That
means that one amplifier channel has to be fed with the original signal, the
other with the inversed counterpart. The phase inversion of the input has to be
performed beyond the amplifier.
NOTE: Please be VERY careful when bridging channels! Incorrect
wiring can damage the corresponding amplifier channels as well as the
connected speaker. The bridged loudspeaker may not be connected to
the ground under no circumstances.
Output specifications:
Connectors:
16x/24x Euroblock
Output impedance:
< 100 mΩ
Min. load impedance: ≥ 4 Ω (single channel)
≥ 8 Ω (bridged)
Hi-Z/ch., unloaded:
approx. 32V
RMS
DC output offset:
< 10 mV
routing
setup
phase
inversion
-
+
-
+
-
+
-
+
Ch. 1
Ch. 2
+
+
+
+
-
-
-
-
