Manuals / Rockford Fosgate / Home Audio / Stereo Amplifier

Rockford Fosgate Comprehensive Troubleshooting for Your Amplifiers: Punch p325.2, p550.2, and p250.2 Models

Models: P550.2 P450.2 P200.2 P250.2 P850.2 P1200.2 P325.2 P650.2

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TROUBLESHOOTING

NOTE:If you are having problems after installation follow the Troubleshooting procedures below.

Procedure 1: Check Amplifier for proper connections.

Verify that POWER light is on. If POWER light is on skip to Step 3, if not continue.

1.Check in-line fuse on battery positive cable. Replace if necessary.

2.Check fuse(s) on amplifier. Replace if necessary.

3.Verify that Ground connection is connected to clean metal on the vehicle’s chassis. Repair/replace if necessary.

4.Verify there is 10.5 - 15.5 Volts present at the positive battery and remote turn-on cable.Verify quality connections for both cables at amplifier, stereo, and battery/fuseholder. Repair/replace if necessary.

Procedure 2: Protect or Thermal light is on.

1.If the Protect light is on, this is a sign of a possible short in the speaker connections. Check for proper speaker connections and use an ohm meter to check for possible shorts in the speaker wiring. Too low of a speaker impedance may also cause Protect to light.

2.If the Thermal light is on, this is usually a sign of driving the amplifier at very high power levels without adequate airflow around the amplifier. Shut off the system and allow to cool. Check for proper speaker impedance, rewire if needed. Low battery voltage may also cause Thermal to light. Check that the vehicle charging system is maintaining proper voltage. If the previous items do not solve the problem, a fault may be in the amplifier, call customer service for support.

Procedure 3: Check Amplifier for audio output.

1.Verify good RCA input connections at stereo and amplifier. Check entire length of cables for kinks, splices, etc.Test RCA inputs for AC volts with stereo on. Repair/replace if necessary.

2.Disconnect RCA input from amplifier. Connect RCA input from test stereo directly to amplifier input.

Procedure 4: Check Amplifier if you experience Turn-on Pop.

1.Disconnect input signal to amplifier and turn amplifier on and off.

2.If the noise is eliminated, connect the REM lead of amplifier to source unit with a delay turn-on module.

OR

1.Use a different 12 Volt source for REM lead of amplifier (i.e. battery direct).

2.If the noise is eliminated, use a relay to isolate the amplifier from noisy turn-on output.

Procedure 5: Check Amplifier if you experience excess Engine Noise.

1. Route all signal carrying wires (RCA, Speaker cables) away from power and ground wires.

OR

2.Bypass any and all electrical components between the stereo and the amplifier(s). Connect stereo directly to input of amplifier. If noise goes away the unit being bypassed is the cause of the noise.

OR

3.Remove existing ground wires for all electrical components. Reground wires to different locations. Verify that grounding location is clean, shiny metal free of paint, rust etc.

OR

4.Add secondary ground cable from negative battery terminal to the chassis metal or engine block of vehicle.

OR

5.Have alternator and battery load tested by your mechanic.Verify good working order of vehicle electrical system including distributor, spark plugs, spark plug wires, voltage regulator etc.

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Rockford Fosgate P450.2, P1200.2, P850.2, P650.2, P325.2 Troubleshooting, Procedure 1 Check Amplifier for proper connections
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P550.2, P450.2, P200.2, P250.2, P850.2 specifications

Rockford Fosgate has established itself as a premier audio brand, known for delivering high-quality sound systems that cater to audiophiles and casual listeners alike. Among its impressive lineup of amplifiers, the P-Series stands out, comprising models such as the P650.2, P325.2, P1200.2, P850.2, and P250.2. These amplifiers not only showcase cutting-edge technology but also deliver exceptional performance that can transform any car audio experience.

Starting with the P650.2, this 2-channel amplifier is designed to provide a powerful punch in a compact form. Rated at 65 watts RMS per channel, it is perfect for driving a set of component speakers. The amplifier features a high-pass crossover, which ensures that only the desired frequencies are delivered to the speakers, enhancing sound clarity and reducing distortion. Its Class-D topology ensures efficient power usage, enabling it to produce high output with minimal heat generation.

The P325.2 is another compact 2-channel option, ideal for those who need reliable power without sacrificing space. With a rating of 75 watts RMS per channel, it caters well to entry-level setups while maintaining Rockford Fosgate’s signature sound quality. The adjustable gain control and variable crossover settings allow for customized tuning, making it versatile for various types of audio systems.

For users seeking substantial power, the P1200.2 is a 2-channel amplifier that is hard to overlook. With a robust output of 600 watts RMS per channel at 2 ohms, it offers ample power to drive larger speakers or even multiple pairs. Its advanced thermal management ensures the unit operates efficiently, preventing overheating during extended use. Additionally, the amplifier features full-range capability, making it suitable for both high and low-frequency applications.

The P850.2, another formidable 2-channel model, delivers 425 watts RMS at 2 ohms, providing a good balance between power and performance. This amplifier includes advanced circuitry that enhances both auditory dynamics and overall efficiency. It is built to accommodate various audio setups, making it a versatile choice for system upgrades.

Lastly, the P250.2 serves as an excellent entry-level option, with 25 watts RMS per channel at 4 ohms. It is designed for users looking to improve factory stereo sound without extensive modifications. This amplifier incorporates low-level inputs and an easy-to-use setup, making it ideal for novices venturing into the world of aftermarket audio systems.

Each of these amplifiers features Rockford Fosgate's signature build quality, with durable construction designed to withstand the rigors of automotive environments. With feature sets that include adjustable settings, optimized sound performance, and rugged design, the P-Series amplifiers from Rockford Fosgate deliver a comprehensive audio solution for every listener's needs.