8
JBL DSI SERIES POWER AMPLIFIERS
WIRING INPUT CONNECTORS
JBL recommends using pre-built or professionally wired balanced cables
(two-conductor plus shield). Balanced wiring provides better rejection of
unwanted noise and hum, however, unbalanced line may also be used.
Use 6-pin plug-in cable ends at the amp input connectors. A male
connector is supplied for each input of your model of amplifier. Additional
connectors are available from JBL (P/N 5024623).
Figure 4 shows connector pin assignments for balanced wiring and Figure
5 shows connector pin assignments for unbalanced wiring. Note that for
bridge mono operation, only the odd-numbered input channels (1,3)
should be wired for each bridged pair.
WIRING OUTPUT CONNECTORS
Before making any output connections, ensure the power cord is
disconnected from the amplifier and carefully review the total impedance
for loudspeakers connected to each amplifier output. If multiple
loudspeakers are connected to an output (i.e., in series, parallel, or
series-parallel), be certain the total system impedance is within allowed
specification for the output.
For low-impedance loads, refer to the table below and select the
appropriate size of wire based on the distance from amplifier to speaker.
Figure 4b
: Unbalanced wiring
SOURCE
INPUT
Figure 4a
: Balanced wiring
SOURCE
INPUT
Distance
Wire Size
Up to 25 ft. (7.6m)
16 AWG
26-40 ft. (7.9-12.2m)
14 AWG
41-60 ft. (12.5-18.3m)
12 AWG
> 60 ft (18.3m)
10 AWG
Figure 4c
: Wiring output connectors