Rockford Fosgate PBR400X4D Punch Series 4-Channel 100W RMS x 4 at 2-Ohms, Class-D Compact Car Amplifier
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What's Inside?
- • 4-Channel amplifier
- • (2) 15" input harnesses
- • (2) 8" speaker-level output harnesses
- • Amplifier Quick Setup
- • Certificate of Performance Verification sheet
- • Class-BR Amplifier Installation Advisory sheet
- • Owner's Manual
Why Choose Rockford Fosgate PBR400X4D 4-Channel Amplifier?
Amplifier Packs a Punch
The Rockford Fosgate PBR400X4D is a compact and powerful amplifier designed for small vehicles. This amplifier packs a punch in terms of audio performance and offers a range of features that make it a standout choice.
Delivers Impressive Power Output
Despite its small size, the PBR400X4D delivers impressive power output, with 100 watts RMS at 2 ohms per channel. It provides clear and dynamic sound reproduction, allowing you to enjoy your music with enhanced clarity and depth. The Class-D design ensures efficiency, minimizing power draw and maximizing performance.
Space-efficient
One of the notable advantages of the PBR400X4D is its compact size. It is incredibly space-efficient and can be easily installed in motorcycles and vehicles with limited space. This versatility allows for more flexibility in optimizing the layout of your audio system.
Frequently Asked Questions (FAQ)
- • Why does the amplifier keep going into protection mode?
Protection can be caused by overheating, an incorrect speaker load, shorted wiring, or poor power and ground connections. Check speaker impedance, terminals, ventilation, and wiring before operating again.
- • Why does it shut off when I turn up the volume?
A shutdown at higher volume can indicate the electrical system cannot supply enough current or the amplifier sees an unsuitable load. Check the battery, charging system, wiring, and speaker impedance.
- • Why is there no sound even though the amplifier powers on?
Check the RCA or signal connections, gain settings, speaker wiring, and source output. Confirm the speakers are connected to the correct channels and that balance or fade settings are not preventing audio.
- • Why does the amplifier get very hot during normal use?
Some heat is normal, but excessive temperature can indicate poor ventilation, an unsuitable speaker load, or prolonged high output. Mount the amplifier in a location with adequate airflow and verify impedance.
- • Why do I hear a whining noise through the speakers?
Engine-speed-related whining is often linked to grounding or electrical interference. Check the amplifier ground and RCA connections, and route signal cables away from power wiring to reduce unwanted noise.
- • Why does the sound distort at higher volume?
Distortion can result from excessive gain, a weak source signal, or amplifier clipping. Reduce the gain, avoid extreme EQ boosts, and make sure the amplifier receives a clean signal from the head unit.
- • Why is one channel louder than the others?
Check the RCA connections, channel gains, speaker wiring, and head unit balance or fade settings. Swapping inputs can help identify whether the problem comes from the source, wiring, or amplifier channel.
- • Can I use it to power four speakers at once?
Yes, its four-channel design is intended for multi-speaker setups. Make sure each speaker is connected to the correct channel and that the combined impedance stays within the amplifier's supported range.
- • Why does the amplifier turn off after playing for a while?
This may indicate thermal protection, an unstable speaker load, or a loose power or ground connection. Check ventilation, impedance, terminals, and wiring to identify the cause of the shutdown.
- • What should I check if the speakers have very low output?
Check the gain settings, input signal, speaker polarity, wiring, and source settings. Also verify the speakers are receiving the expected channels and that the amplifier is not limiting output through protection.
- Maximum Power : 400 Watts
- Number of Channels : 4
- Frequency Response : 20-20000 Hz
- Amplifier Class : D
- Fuse Rating : 60 A
Features:
- Full Range Class-D: Delivers efficient, high-output performance with minimal distortion
- Differential Inputs with High-Level Auto Turn-On: Automatically powers on with connected speaker-level signals
- 8 AWG Power/Ground Connector: Supports heavy current flow for stable operation
- C.L.E.A.N. Input/Output Clip Detection & Indicator LEDs: Provides real-time monitoring to prevent signal clipping
- Real-Time Output & Power Supply Thermal Sensing: Protects the amplifier from overheating
- Rockford Fosgate Proprietary Protection: Safeguards the amplifier against short circuits and overloads
- Selectable Fixed 12dB/Octave Butterworth Crossovers: Allows precise tuning for optimal sound quality
- Extruded Aluminum Heatsink: Enhances heat dissipation for consistent performance
- Muted Turn-On: Prevents unwanted noise during power-up
- Discrete Surface Mount Technology: Ensures compact and reliable circuit design
- Remote-Out Feature When Using High-Level Inputs: Enables control of additional amplifiers in your system
- Compact Design for Stealth Installations: Fits easily into tight spaces without sacrificing performance
- 1-Year Warranty: Provides peace of mind with manufacturer coverage
- CEA-2006 & CE Compliant: Meets industry standards for performance and safety
Specifications:
- RMS Power Output (Watts x Channels): 50 x 4
- Peak Power Output (Watts x Channels): N/A
- Power at 2 Ohms (Watts x Channels): 100 x 4
- Bridged Power (Watts x Channels): 200 x 2
- Minimum Impedance Bridged: 4
- Minimum Impedance Unbridged: 2
- Minimum Impedance: 2
- Best Frequency Response: 20-20k Hz
- THD at Rated RMS Power: 1%
- Signal to Noise Ratio: 80 dB
- Input Voltage: 14.4v
- Amplifier Class: D
- Low-Pass Crossover Frequency: 80 Hz
- Low-Pass Slope (dB/octave): 12dB/oct
- High-Pass Crossover Frequency: 60Hz, 80Hz
- High-Pass Slope (dB/octave): 12dB/oct
- Bass Boost: No
- Bass Boost Frequency: N/A
- Fan Cooled: No
- Fuse Rating: 60
- Speaker Level Inputs: Yes
- Preamp Outputs: No
- Width (inches): 6-3/4
- Height (inches): 1-9/16
- Depth (inches): 4-5/16
- Parts Warranty: 1 Year
- Labor Warranty: 1 Year
- Full Range Class D
- Differential inputs with high level auto turn-on feature
- 8 AWG power/ground connector
- Remote-Out feature when using high level inputs
- C.L.E.A.N. input/output clip detection and indicator LEDs
- Real time output and power supply thermal sensing
- Extruded aluminum heatsink
- Selectable Fixed 12dB/Octave Butterworth Crossovers
- Muted turn on
- Rockford Fosgate proprietary protection
- Discrete surface mount technology
- Compact design for stealth installations
- CEA-2006 and CE compliant
- switchable high-pass filters (off/60/80 Hz at 12 dB/octave) on front and rear channels
- switchable low-pass filters (off/80 Hz at 12 dB/octave) on front and rear channels
- preamp and speaker-level inputs
- signal-sensing turn-on with speaker-level inputs eliminate need for remote turn-on lead
- wiring, fuse, and hardware not included with amplifier
- 8-gauge power and ground wires and a 60-amp fuse recommended
- dimensions: 6-3/4"W x 1-9/16"H x 4-1/4"D
- UPC: 780687351427
- Weight: 4
- Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.
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Write a review!
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Hooked up my 6x9s with it and running them at 2 ohms, it sounds really way better than just having them powered up by the stock stereo.
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Lovin' this RF amp. I've tried some more expensive class D amps than this but I never thought I would love how this amp powers up my speakers. Great full range sound. It's compact too, which makes installation much easier.
