Turn-On Lead; Input Sections - JL Audio JX400/4D Owner's Manual

TURN-ON LEAD

The JX400/4D is turned on and off
using a conventional +12V remote turn-
on lead, typically controlled by the
source unit's remote turn-on output.
+12 VDC Ground
The amplifier will turn on when +12V is
present at its "Remote" input and turn off when
+12V is switched off. If a source unit does not
have a dedicated remote turn-on output, the
amplifier's turn-on lead can be connected to +12V
via a switch that derives power from an ignition-
switched circuit.
18 AWG wire is more than adequate for the
remote turn-on connection. To connect the
remote turn-on wire to the amplifier, strip 1/2-
inch (12 mm) of insulation from the wire and
insert it into the "Remote" receptacle on the
power connector. Tighten the connector down
using the supplied 2.5 mm hex wrench.
6
Remote
CH. 1

INPUT SECTIONS

The JX400/4D's has two input sections: one
for Channels 1&2 and another for Channels 3&4.
These input sections allows you to send signals to
the amplifier sections through the use of either
two or four inputs. Each input section offers
two input connection methods, one for high-
level (speaker level) signals and one for low-level
(preamp level) signals.
1) Low-Level Inputs: A standard left/
Bridged
right pair of RCA type jacks in the
"Low-Level Inputs" section is used for
preamp level (low-level) signal input
on the JX400/4D. This is the preferred
connection method whenever available.
2) Hi-Level Inputs: If your system does not offer
CH. 2
( L ) ( R )
a preamp level signal option, you can connect
speaker level signals directly to the "Hi-Level
Inputs" connectors using the supplied mating
connectors and wire harnesses. Simply splice
the appropriate left/right and positive/negative
wires to the included harnesses and plug the
harness into the "Hi-Level Inputs" connectors
on the amplifier. The JX400/4D will attenuate
the high-level signals to make them compatible
with its input stages.
Bridged
CH. 3 CH. 4
( L ) ( R )
JL Audio