Ampli er Owner's Manual
FRONT AND REAR INPUTS
Connect preamp signal cables from headunit to these inputs. The front
AND rear inputs must be used, if only the front input is used then the rear
speaker outputs will have no output signal.
CROSSOVER FREQUENCY
Controls the crossover point for the speaker outputs.
BASS BOOST
Variable bass boost from 0 to +18dB @ 45Hz.
+12V
This must be connected to the fused positive terminal (+12V) of the car's
battery. The fuse must be located within 18 inches of the battery.
REMOTE
This must be connected to switched +12V, usually a trigger wire coming
from the head unit or ignition.
GROUND
This must be connected to the negative terminal of the car's battery or
bolted to a clean, unpainted part of the chassis of the vehicle.
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4 Channel Power Amplifier
SENS
Used to reach maximum ampli er power with a wide variety of headunits.
CONFIG
FLAT: Crossovers are turned o
HP: High pass crossover is on
LP: Low pass crossover is on
REMOTE MONITORING DISPLAY (RMD)
Connect optional RMD Voltage Display to this port.
SPEAKER OUTPUTS
Used to connect the ampli er to speakers. SD320.4's minimum
impedance is 4 ohms bridged or 2 ohms stereo. Use the Right + and
Left - to bridge the channels.
Note: SD320.4 contains a cooling fan located on the power endpanel.
SD320.4
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