Advertisement
BLACK WIRE: Negative ground - Connect to clean unpainted metal surface on
car chassis.
RED/WHITE WIRE: Remote turn on lead requires +12 volts; connect to power
antenna lead from radio. When this is not available you may connect to a +12
volts wire that is on with the ignition on or in the accessory position.
RCA CONNECTIONS: Connect with quality-shielded patch cords from source,
crossover, or any other sound processor.
MODE SELECTION: A switch, accessible through the plug on the bottom of the
amplifier, selects one of the three operating modes for the amplifier. Position A
(satellite mode): both front and rear outputs are high pass and variable in the
4753IQ from 50Hz to 150Hz. The subwoofer RCA output is active with subwoofer
information for another amplifier being supplied, and is variable from 50Hz to150
Hz in the 4753IQ. Position B (bi-amp configuration): the front outputs are high
pass, and the rear outputs become subwoofer outputs in the 4753IQ and the
crossover points are variable from 50Hz to 150Hz. Position C (full range
operation) front and rear. In the 4753IQ the subwoofer outputs are also active in
this model. NOTE: In all modes both front and rear inputs are required. You can
use "Y" RCA connectors to accomplish this.
SPEAKER CONNECTIONS: The speaker connections are accomplished by
connecting speaker wire to removable plugs. These plugs will accept up to a 12-
gauge speaker wire. Facing the plug while it is connected to the amplifier the
polarity for both plugs in Left (-), Left (+), Right (-), Right (+) with the left plug
being the front outputs and the right being the rear outputs. The exception to this
is when in Position B of the mode selector: the front speaker plug is your high
pass output and the rear speaker plug is your low pass (or, subwoofer output).
MINIMUM OHM LOADS: Normal operation is 4 ohms per channel or 8 ohms
mono. The amplifier will operate at 2 ohms per channel or 4 ohms mono but the
following must be done: You must change the "power supply impedance
matching connectors". Remove faceplate and bottom cover and locate toroid coil,
just below it are two disconnects on taps marked "4". Change them to "2",
replace cover and complete installation. Failure to change these connections can
cause premature failure of your amplifier.
4753IQ CROSSOVER ADJUSTMENT AND OPERATION: In satellite mode
(position A) the front crossover adjustment controls the front high pass and the
subwoofer outputs. The rear adjusts only the rear. In the full range mode
(position C) the front crossover adjustment sets the low pass frequency for the
subwoofer output. Adjust the crossover to the position that offers the best sound
in your system.
© 2008 Linear Power, Inc. - ALL RIGHTS RESERVED
LINEAR POWER™ is a trademark of Linear Power, Inc.
2
Advertisement
