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 2, if not continue.

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

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

3.Verify there is 10.5 - 15.5 Volts of current 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: Check Amplifier for audio output.

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

2.Disconnect RCA/high-level input from amplifier. Connect RCA/high-level input from test stereo directly to amplifier input.

Procedure 3: 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.

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 4: Check Amplifier if you experience excess Engine Noise.

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

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.

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.

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

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.

401SP, 301SP specifications

Rockford Fosgate is a name synonymous with high-performance audio equipment, particularly in the automotive sound system market. Among their impressive lineup, the Rockford Fosgate 401SP and 301SP represent excellent choices for car audio enthusiasts looking to enhance their in-car audio experience.

The Rockford Fosgate 401SP is a powerful 4-inch speaker designed to deliver exceptional sound quality. Built with a flex-fit basket design, it enables easy installation in a variety of vehicles, accommodating various mounting locations. One of its standout features is the high-temperature voice coil that can withstand intense heat, ensuring reliability and performance even under demanding conditions. Coupled with a durable polypropylene cone and butyl rubber surround, the 401SP produces clear and balanced audio across a wide frequency range. This speaker is also equipped with a high-efficiency design, allowing it to generate maximum output with minimal power input, making it suitable for systems running on less power.

On the other hand, the Rockford Fosgate 301SP is designed to cater to users seeking a cost-effective yet high-quality audio solution. This 3-inch speaker fits snugly in tighter spaces while still delivering impressive sound performance. Its weather-resistant design makes it ideal for various environments, ensuring that it can withstand elements such as moisture and UV rays. Like its bigger counterpart, the 301SP utilizes a polypropylene cone and rubber surround, ensuring durability and longevity. Additionally, it features a high-performance voice coil that provides efficient power handling, enabling it to reproduce dynamic sounds with clarity.

Both models incorporate Rockford Fosgate’s advanced engineering technologies, including their unique speaker design that enhances sound stage and imaging. Furthermore, the speakers are optimized for use with amplifiers, allowing users to experience deeper bass and crisper highs when integrated into a full audio system. The combination of these features results in an audio experience that stands out for its quality, depth, and clarity.

In conclusion, both the Rockford Fosgate 401SP and 301SP offer unique advantages tailored to different user needs. Whether you prioritize power and depth with the 401SP or seek a compact solution with excellent quality in the 301SP, Rockford Fosgate continues to deliver top-notch audio products that elevate any car's sound system.