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8. IN/OUT DIN Jacks
If you are using the amplifier as part of a JBL Synthesis
System, it is necessary to use these jacks to interconnect
to other system components, so that control signals
(power on/off and music/cinema mode switching) can
be transmitted from one unit to the next, starting at the
surround processor, through the equalizer and amplifiers,
and ending at the speakers. Follow the connection
diagrams on the following pages corresponding to the
appropriate Synthesis system for detailed information
regarding these connections. Make connections to
these jacks only as shown in the diagrams. If these
jacks are used in any other manner, e.g., to control
electric screens, the unit can be damaged and the
warranty will be void. For specific electrical information on
these jacks, contact JBL Synthesis Customer Service at
(800) 336-4JBL.
Do not plug anything into these jacks if you
are not using the S7150 with a JBL Synthesis
System.
9. Speaker Mode Control Connectors
The front left and front right speakers are switched
between Music and Cinema modes by signals present
at both the DIN connectors (as described in the previous
paragraph) AND the 2-conductor connectors shown at (9).
The installer may find it preferable to use 2-conductor
wire (18 gage recommended) rather than long multi-
conductor DIN cables for the mode-switching connection
between the S7150 and these two speakers. Adapters
supplied with the S7150 are used at the speaker end of
the wire to allow connection to the speakers' DIN input
connectors. Proper polarity must be observed as shown
in the wiring diagrams; reverse the connections at one
end of the wire if the speaker(s) do not switch modes
(from horn (Cinema) to tweeter (Music)).
Note that 5-conductor DIN cables MUST be used
between all other components to allow correct power
and mode switching and that the same warning as in
(8) applies here; do not attempt to use these jacks to
control anything other than the mode-switching function
of Synthesis speakers, as this may damage the S7150
and will void the warranty.
10. AC Inlet
Your S7150 is shipped with an IEC-type removable
power cord that mates with the AC inlet on the rear
panel. To ensure proper operation, use the supplied
power cord. This amplifier is NOT a multi-voltage
unit; using a power cord with a different connection to
the AC wall receptacle will void the warranty.
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3.0
OPERATION AND
CONTROLS
3.0
OPERATION AND
CONTROLS