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Amplier Owner’s Manual
© 2011 Phoenix Gold • www.phoenixgold.com
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.
SENS
Used to reach maximum amplier power with a wide variety of headunits.
CONFIG
FLAT: Crossovers are turned o
HPF: High pass crossover is on
LPF: Low pass crossover is on
+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.
SPEAKER OUTPUTS
Used to connect the amplier to speakers. SD500.4 minimum impedance
is 4 ohm bridged or 2 ohm stereo. Use Right + and Left - to bridge the
channels.
sD500.4
4 Channel Power Amplifier
INPUT
RR
RL
FR
FL
FREQ
40Hz 400Hz
X OVER
LPF
FLAT
HPF
BASSBOOST
0dB 18dB
SENS
MIN MAX
SENS
MIN MAX
FREQ
40Hz 400Hz
BASSBOOST
0dB 18dB
X OVER
HPF
FLAT
LPF
POWER
FL
GROUND REMOTE + 12V
FUSE
25A 25A
FR
RL RR
+ 12VR
GROUND REMOTE + 12V
FUSE
30A30A
SPEAKER
GROU ND +12VR
POWER
SENS
MIN MAX
BASS
0dB 18dB
X-OVER
FREQ.
30Hz 300Hz
REMOTE
PROTECT
SUBSONIC
10Hz 55Hz
L
R
INPUT
PROTECT
POWER
REMOTE
SUB INPUT
R
MIN MAX
MIN MAX
SENS
SENS BASS BOOST
0dB 18dB
HPF
15Hz 250Hz
HPF
15Hz 250Hz MIN MAX
SENS
30Hz
LPF
300Hz
GROUND REMOTE + 12V
FUSE
30A
FL
30A
SUB.
SUB.
INPUT
RR
RL
FR
FL
SUB INPUT
L
SUB FRONT
FRONT REAR
FR
RL RR
GROU ND + 12VR
GROU ND
NOTE: Visible through the plexiglass cover, a single blue power LED is located in the lower corner of all SD ampliers.