Phoenix Gold GX Series User manual

• Class D Topology
• Selectable Balanced / Unbalanced Inputs
• Surface-Mount Component Technology
• Multi-Input Selector
• Low Pass and Subsonic Crossovers (GX1200.1)
• Proprietary PG Quick Connects
• Flush Mountable Bass Knob
• Full Radiation Heat Sink
• Single-sided Control Panel
• Onboard Short/Therm/Imped Protection
• 0-180° Variable Phase Shift (GX1200.1)
Features
GX Series
Amplier Manual
Models: GX1200.6 ●GX800.4 ● GX1200.1
GX
our proprietary PG quick connects for high current
capability and reliability while delivering uber clean
and quick installations. The chassis has been optimized
by utilizing BFD (Balanced Flow Dissipation) to keep the
amplier running cool when the music is hot.
New for 2021 is Phoenix Gold’s GX line of ampliers.
Designed to cover a multitude of installation needs,
GX is packed with the features and power you can
expect from the Phoenix Gold brand. Included in the
line are our proprietary PG quick connects for high
current capability and reliability while delivering uber
clean and quick installations. The chassis has been
optimized by utilizing BFD (Balanced Flow Dissipation)
to keep the amplier running cool when the music is hot.

© 2020 Phoenix Gold • www.phoenixgold.com
Designed and Engineered in the USA
Expertly Manufactured in China
A Power Brand of AAMP Global.
15500 Lightwave Drive, Suite 202
Clearwater, Florida 33760
P: 866-788-4237
[email protected]
www.phoenixgold.com
Phoenix Gold Product Warranty
LIMITED WARRANTY ON AMPLIFIERS
Phoenix Gold warrants this product to be free of defects in materials and workmanship for a period of one (1) years
from the original date of purchase. This warranty is not transferable and applies only to the original purchaser from an
authorized Phoenix Gold dealer in the United States of America only. Should service be necessary under this warranty
for any reason due to manufacturing defect or malfunction, Phoenix Gold will (at its discretion), repair or replace the
defective product with new or remanufactured product at no charge. Damage caused by the following is not covered
under warranty: accident, misuse, abuse, product modication or neglect, failure to follow installation instructions,
unauthorized repair attempts, misrepresentations by the seller. This warranty does not cover incidental or consequential
damages and does not cover the cost of removing or reinstalling the unit(s). Cosmetic damage due to accident or
normal wear and tear is not covered under warranty. Additional warranty coverages are available, see your warranty
card for specic options based on your geographic region and product.
INTERNATIONAL WARRANTIES:
Products purchased outside the United States of America are covered only by that country’s Authorized Phoenix Gold
reseller and not by Phoenix Gold. Consumers needing service or warranty information for these products must contact
that country’s reseller for information.

© 2020 Phoenix Gold • www.phoenixgold.com
Amplifier Owner’s Manual
GX1200.6 SPECIFICATIONS
IMPORTANT: A power birth certicate is included for each amplier. GX ampliers are
conservatively rated and will exceed their RMS power rating shown here.
All RMS power ratings and measurements are at 14.4 volts with no more than 1% THD.
Remote Bass Controller:
Flush mount level controller. Fine tune your bass output with a simple
turn of the precision controller. 16ft of cable included.
GX 1200.6 SPECIFICATIONS
RMS Power Ratings listed at less than 1% THD @ 14.4v
Number of Channels: 6
4Ω: CH 1-6 125W x 6
2Ω: CH 1-6 200W x 6
4Ω Bridged: 400W x 3
Total RMS Power (Sum of rated power): 1200W
Bridgeable: Yes
Crossover Control, Linkwitz-Riley: FULL/HP/LP
40Hz - 500Hz @ 12dB/Oct
Input Selection: 0.4-10V
Signal to Noise (@ CEA Standard): >100dB
Frequency Response: Full Range 10-40k
Topology Class D
Heatsink Type: Extruded Aluminum
Cooling Type: Radiation
Operating Voltage: 8V to 16V
Switchable Auto-Turn On: No
Power Supply Type: Unregulated
Power Terminal: 4 Gauge Quick Connect
Speaker Terminal: 8 Gauge Quick Connect
Recommended Fusing: 80A
Dimensions (L x W x H): 13.54” x 6.5” x 2.03”
344mm x 165mm x 51.5mm
13.54in / 344mm
2.03in / 51.5mm
6.5in / 165mm

Amplifier Owner’s Manual
© 2020 Phoenix Gold • www.phoenixgold.com
GX800.4 SPECIFICATIONS
IMPORTANT: A power birth certicate is included for each amplier. GX ampliers are
conservatively rated and will exceed their RMS power rating shown here.
All RMS power ratings and measurements are at 14.4 volts with no more than 1% THD.
GX800.4 SPECIFICATIONS
RMS Power Ratings listed at less than 1% THD @ 14.4v
Number of Channels: 4
4Ω: CH 1-4 125W x 4
2Ω: CH 1-4 200w x 4
4Ω: Bridged 400w x 2
Total RMS Power (Sum of rated power): 800W
Bridgeable: Yes
Crossover Control, Linkwitz-Riley: FULL/HP/LP
40Hz - 500Hz @ 12dB/Oct
Input Selection: 0.4-10V
Signal to Noise (@ CEA Standard): >100dB
Frequency Response: Full Range 10-40k
Topology Class D
Heatsink Type: Extruded Aluminum
Cooling Type: Radiation
Operating Voltage: 8V to 16V
Switchable Auto-Turn On: No
Power Supply Type: Unregulated
Power Terminal: 4 Gauge Quick Connect
Speaker Terminal: 8 Gauge Quick Connect
Recommended Fusing: 60A
Dimensions (L x W x H): 11.57” x 6.5” x 2.03”
294mm x 165mm x 51.5mm
Remote Bass Controller:
Flush mount level controller. Fine tune your bass output with a simple
turn of the precision controller. 16ft of cable included.
11.57in / 294mm
2.03in / 51.5mm
6.5in / 165mm

© 2020 Phoenix Gold • www.phoenixgold.com
Amplifier Owner’s Manual
IMPORTANT: A power birth certicate is included for each amplier. GX ampliers are
conservatively rated and will exceed their RMS power rating shown here.
All RMS power ratings and measurements are at 14.4 volts with no more than 1% THD.
IMPORTANT: A power birth certicate is included for each amplier. GX ampliers are
conservatively rated and will exceed their RMS power rating shown here.
All RMS power ratings and measurements are at 14.4 volts with no more than 1% THD.
GX1200.1 SPECIFICATIONS
GX1200.1 SPECIFICATIONS
RMS Power Ratings listed at less than 1% THD @ 14.4v
Number of Channels: 1
1Ω: CH 1 1200W x 1
2Ω: CH 1 800W x 1
4Ω: CH 1 500W x 1
Total RMS Power (Sum of rated power): 1200W
Bridgeable: N/A
Crossover Control, Linkwitz-Riley: LP
50Hz - 250Hz @ 24dB/Oct
Input Selection: 0.4-10V
Signal to Noise (@ CEA Standard): >100dB
Frequency Response: Sub 15-250Hz
Topology Class D
Heatsink Type: Extruded Aluminum
Cooling Type: Radiation
Operating Voltage: 8V to 16V
Switchable Auto-Turn On: No
Power Supply Type: Unregulated
Power Terminal: 4 Gauge Quick Connect
Speaker Terminal: 8-12 Gauge Quick Connect
Recommended Fusing: 80A
Dimensions (L x W x H): 11.57” x 6.5” x 2.03”
294mm x 165mm x 51.5mm
Remote Bass Controller:
Flush mount level controller. Fine tune your bass output with a simple
turn of the precision controller. 16ft of cable included.
11.57in / 294mm
2.03in / 51.5mm
6.5in / 165mm

© 2020 Phoenix Gold • www.phoenixgold.com
POWER/PROTECT LED
Amplier status indicator. Blue indicates all systems working and amplier 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
amplier issues, make sure the amplier 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 ampliers fuse rating.
SPEAKER OUTPUTS CH1-6
Used to connect the amplier to speakers. The GX1200.6 minimum impedance is 2
Ohms Stereo or 4 Ohms Bridged for all channels.
REMOTE LEVEL CONTROL
This port is for connecting the remote level control knob. This allows up to 20dB of
volume adjustment. This is not a bass boost, it controls the level of the signal.
The remote only controls CH 5/6.
12 3
1
3
4
2
GX1200.6
Multi-Channel Power Amplier

© 2020 Phoenix Gold • www.phoenixgold.com
INPUT GAIN (SENS) CH 1/2, 3/4, 5/6
Used to adjust the input sensitivity to match the input level signal on the channels.
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.
CROSSOVER (X-OVER) CH 1/2, 3/4, 5/6
High Pass Filter (HPF): When set, activates a highpass crossover for the channels.
Continuously variable from 40Hz to 500Hz using the FREQ dial.
Full Range (FULL): Select FULL to amplify a full range signal.
Low Pass Filter (LPF): When set, activates a low pass crossover for the channels.
Continuously variable from 40Hz to 500Hz using the FREQ dial.
INPUTS (F/R CHs, SUB CH)
If you are using RCA or high level signal from an aftermarket head unit, select UNBAL. If
you are using high level from a OEM factory source unit or factory amplier select BAL.
INPUT CONFIG (4CH / 6CH)
Input signal selectable for 4 or 6 channels. If only 4 channels of input signal are
available, select 4CH to allow signal to split to CH 5+6. Select 6CH if 6 channels
of input are being used.
INPUT (CH1-6)
Connect preamp signal cables (RCA) from the source unit to these terminals.
Use of 4 or 6 channels of input signal selectable with INPUT CONFIG switch.
4 5 6
6
7
7
8
8
5

© 2020 Phoenix Gold • www.phoenixgold.com
POWER/PROTECT LED
Amplier status indicator. Blue indicates all systems working and amplier 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
amplier issues, make sure the amplier 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 ampliers fuse rating.
SPEAKER OUTPUTS CH1-4
Used to connect the amplier to speakers. The GX800.4 minimum impedance is 2 Ohms
Stereo or 4 Ohms Bridged for all channels.
INPUT GAIN (SENS) Front Channel, Rear Channel
Used to adjust the input sensitivity to match the input level signal on the channels.
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.
12 3
1
3
4
2
GX800.4
Multi-Channel Power Amplier

© 2020 Phoenix Gold • www.phoenixgold.com
CROSSOVER (X-OVER) Front Channel, Rear Channel
High Pass Filter (HPF): When set, activates a highpass crossover for the channels.
Continuously variable from 40Hz to 500Hz using the FREQ dial.
Full Range (FULL): Select FULL to amplify a full range signal.
Low Pass Filter (LPF): When set, activates a low pass crossover for the channels.
Continuously variable from 40Hz to 500Hz using the FREQ dial.
INPUTS
If you are using RCA or high level signal from an aftermarket head unit, select UNBAL. If
you are using high level from a OEM factory source unit or factory amplier select BAL.
INPUT CONFIG (2CH / 4CH)
Input signal selectable for 2 or 4 channels. If only 2 channels of input signal are
available, select 2CH to allow signal to split to REAR Channels. Select 4CH if 4
channels of input are used.
INPUT (Front / Rear)
Connect preamp signal cables (RCA) from the source unit to these terminals.
Use of 2 or 4 channels of input signal selectable with INPUT CONFIG switch.
REMOTE LEVEL CONTROL
This port is for connecting the remote level control knob. This allows up to 20dB of
volume adjustment. This is not a bass boost, it controls the level of the signal.
The remote only controls REAR Channel level.
4 5 6
6
7
7
9
8
8
9
5

© 2020 Phoenix Gold • www.phoenixgold.com
POWER/PROTECT LED
Amplier status indicator. Blue indicates all systems working and amplier 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
amplier issues, make sure the amplier 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 ampliers fuse rating.
SPEAKER OUTPUT
Used to connect the amplier 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.
12 3 4
1
3
4
5
2
GX1200.1
Monoblock Power Amplier