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© 2018 Phoenix Gold • www.phoenixgold.com  

Amplifier Owner’s Manual

       

Models: RX2 750.5 

 RX2 400.4 

Amplifier

Manual

The RX2-series amplifiers are the next evolution of the 

reliable and great sounding RX series. With a new, more 

efficient circuit design, we have increased power output 

while decreasing chassis size 

(most models)

. These amplifiers 

will be the reference for style and value in any installation. 

Built with the legendary Phoenix Gold reliability, they feature 

heavy duty heatsinks, robust unregulated power supplies, 

and oversized direct input power and speaker terminals. 

They also sound sweet thanks to the audiophile grade 

output transistors. We made upgrading your stock system 

easy by allowing high level inputs so you can keep the OEM 

radio, and still upgrade the sound. RX2-series amplifiers are 

ready to impress with their effortless ability to provide power 

and clarity while keeping the chassis at a convenient size 

for any installation. The devil is in the details, so it just made 

sense that we allow the PG name plate to be removed and 

turned to match the orientation you might need for your 

install because we know your going to want show off your 

system and make all you’re friends jealous.

• Class-D Topology RX2 750.5
• Class-A/B Topology RX2 400.4
• Small Footprint Chassis Design
• Robust Unregulated Power Supplies
• Rotatable Name Badge for Installation Flexibility
• High Level Inputs for Easy OEM Integration
• Remote Bass Controller Included (RX2 750.5)
• Audio Precision® Quality Control Verification

Features

Summary of Contents for RX2 400.4

Page 1: ...rading your stock system easy by allowing high level inputs so you can keep the OEM radio and still upgrade the sound RX2 series amplifiers are ready to impress with their effortless ability to provide power and clarity while keeping the chassis at a convenient size for any installation The devil is in the details so it just made sense that we allow the PG name plate to be removed and turned to ma...

Page 2: ... Channels 5 4Ω CH 1 4 60W x 4 2Ω CH 1 4 90w x 4 4Ω CH 5 250W x 1 2Ω CH 5 400w x 1 Total RMS Power Sum of rated power 760W Bridgeable Yes Crossover Control Linkwitz Riley FLAT HP LP 50Hz 200Hz 12dB Oct Input Selection 207mV 5 2v Signal to Noise CEA Standard 80 1dB Frequency Response Full Range 10 40k Sub 15 200Hz Topology Class D Heatsink Type Extruded Aluminum Cooling Type Radiation Operating Volt...

Page 3: ... Mode 4Ω 1 2 4Ω 2 4 bridged 75w x 2 200 x1 3CH Mode 2Ω 1 2 4Ω 2 4 bridged 100w x 2 200 x1 Total RMS Power Sum of rated power 400W Bridgeable Yes Crossover Control Linkwitz Riley FLAT HP LP 50Hz 200Hz 12dB Oct Input Selection 207mV 5 2v Signal to Noise CEA Standard 80 1dB Frequency Response Full Range 10 40k Topology Class A B Heatsink Type Extruded Aluminum Cooling Type Radiation Operating Voltage...

Page 4: ... input level signal on the Rear channels Continuously variable from 0 2V to 6V Adjust this with the help of a DMM and a test signal or an Oscilloscope See System Tuning section for setup instructions REAR FRONT AND SUB INPUTS Connect preamp signal cables from headunit to these inputs These inputs are controlled by the MODE switch Be sure to select the correct mode for the amount of inputs you will...

Page 5: ...ted 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 amplifiers fuse rating REMOTE This must be connected to switched 12V usually a trigger wire coming from the head unit or an ignition lead if one is not available GROUND This must be connected to the negative terminal of the ca...

Page 6: ...ve 4ch of signal You will have full control from your source unit for front and rear levels FRONT REAR INPUTS Connect preamp signal cables from headunit to these RX2 400 4 MULTI CHANNEL POWER AMPLIFIERS inputs These inputs are controlled by the MODE switch Be sure to select the correct mode for the amount of inputs you will be using for your installation GAIN REAR FRONT Used to adjust the input se...

Page 7: ...o unit and voiding the warranty BATT 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 amplifiers fuse rating REMOTE This must be connected to switched 12V usually a trigger wire coming from the head unit or an ignition lead if one is not available GROUND T...

Page 8: ...eck voltage at the amplifier with a DMM volt meter 12v and R with head unit on the voltage should register between 11 5V and 14 4V when using the attached ground lead of the amplifier Check that the amplifier s ground is good and has a solid connection Check fuse at the battery Use a meter to verify connection from one end of the fuse to the other breaks may not always be visible If the fuse is bl...

Page 9: ...l 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 modification or neglect failure to follow installation instructions unauthorized repair attempts misrepresentations by the seller This warranty does not cover incidental or consequential damages and do...

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