User Manual
© 2020 Phoenix Gold • www.phoenixgold.com
POWER/PROTECT LED
Amplier status indicator. Blue indicates all systems working and amplier is on. Red
indicates protection mode, from Thermal or Short Circuit. (See Troubleshooting)
GROUND (GND)
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. Bad grounds account for 90% of
amplier issues, make sure the amplier is grounded correctly and securely.
REMOTE (REM)
Connect to switched +12V, usually a trigger wire coming from the head unit or an
ignition lead if one is not available.
+12V
This must be connected to the fused positive terminal (+12V) of the car’s battery. A fuse
must be located within 18 inches of the battery to protect the vehicle and should be
fused at, or above, the ampliers fuse rating.
SPEAKER OUTPUT
Used to connect the amplier to speakers. The GX1200.0 minimum impedance is 1
Ohms
INPUT GAIN (SENS)
Used to adjust the input sensitivity to match the input level signal. Continuously
variable from 0.4V to 10V. Adjust this with the help of a DMM and a test signal or an
Oscilloscope. See System Tuning section for basic setup instructions.
PHASE
Controls the Phase from 0-180°. Properly adjusting phase will allow enhanced bass
response, dynamics and impact at any volume.
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GX1200.1
Monoblock Power Amplier