Amplifier 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 @ 45 Hz.
SENS
Used to reach maximum amplifier power with a wide variety of headunits.
CONFIG
FLAT: Crossovers are turned off
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 sw12V, 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 amplifier 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
+ 12V
R
GROUND
REMOTE
+ 12V
FUSE
30A
30A
SPEAKER
GROU ND
+ 12V
R
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
S UB
FRONT
FRONT
REAR
FR
RL
RR
GROU ND
+ 12V
R
GROU ND
NOTE: Visible through the plexiglass cover, a single blue power LED is located In the lower corner of all SD amplifiers.
