400 Watt 4-Channel Amplifier P400-4

400 Watt 4-Channel Amplifier P400-4

The Punch P400-4 is a 4-channel amplifier producing 100 Watts into all four channels at 2-Ohm. The P400-4 for cars and trucks is perfect for a 4-way full-range system or a 3-way system having a front stage with subwoofers on the rear channels.

• Model replaced by P400X4

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Discontinued
Overview

The P400-4 car amplifier is perfect for 4-way front-stage/rear-fill or 3-way front-stage/subwoofer systems. Simply drop a pair of component speakers on the front channels and subs on the rear and BOOM - you got "The PUNCH." With its flexible design, the P400-4 is an excellent amplifier choice for virtually any vehicle.

Longing for a subwoofer? Check out our car audio subwoofers here.

FEATURES AT A GLANCE

  • 12dB/octave Butterworth crossover
  • MOSFET power supply
  • 4 Gauge power/ground connectors
  • MOSFET output stage
  • 2/4 channel input switch
  • Audiophile grade speaker connections
  • Top Mounted LED Indicators
  • 1 Year Warranty
Technologies
CTA-2006 Compliant

Power ratings on Rockford Fosgate amplifiers conform to CTA-2006 industry standards. These guidelines mean your amplifier's ...

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DSM

DSM utilize 1% tight-tolerances improving efficiency of the circuit, decreases cross-talk from other discrete components and ...

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DTM

Dynamic Thermal Management evenly distributes excess heat across entire amplifier heatsink.

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MEHSA3

MEHSA3 reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life span.

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NOMAD

NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and ...

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Punch EQ2

Onboard equalizer with up to +18dB @ 45Hz and/or up to +12dB boost at 12kHz.

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Engineered In The USA

These Avatars are a personal signature from the Rockford Fosgate team member(s) who designed and engineered ...

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TO-247 MOSFETs

(left-OLD | right-NEW)
Rockford Fosgate amps use custom TO-247 MOSFETs. These have 60% more ...

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TRANS•ana

Trans•ana is a Class A/B topology that simplifies the signal path of the amplifier allowing the ...

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Specifications
Cta-2006 Compliant
Number of Channels
4
Total Power
(Sum of Rated Power)
400 Watts RMS
Rated Power
(RMS Continuous Power)
50 Watts x 4 @ 4-Ohm
100 Watts x 4 @ 2-Ohm
200 Watts x 2 @ 4-Ohm Bridged
Dynamic Power
(PVC/PowerCube®)
Front Channels
86 Watts x 2 @ 4-Ohms 0° Res
144 Watts x 2 @ 2-Ohms 0° Res

Rear Channels
85 Watts x 2 @ 4-Ohms 0° Res
142 Watts x 2 @ 2-Ohms 0° Res
Bridgeable
Yes
Frequency Response
20Hz to 20kHz +/- 1.0dB
Input Sensitivity
Circuit Topology Class
Class A/B
Efficiency (average)
71% @ 4-Ohm
70% @ 2-Ohm
Total Harmonic Distortion (Thd+Noise)
Signal Input
Low level: 2 RCA pair
Signal Output
Tone Controls
Front Punch EQ2 Bass: 0dB to +18dB @ 45Hz and/or
Front Punch EQ2 Treble: 0dB to +12dB @ 12kHz
Rear Punch EQ2 Bass: 0dB to +18dB @ 45Hz and/or
Rear Punch EQ2 Treble: 0dB to +12dB @ 12kHz
Function depends upon LP/AP/HP switch position
Crossover Controls
Front High-Pass (HP): 50Hz-500Hz 12dB/octave Butterworth
Front Low-Pass (LP): 50-500Hz 12dB/octave Butterworth
Rear High-Pass (HP): 50Hz-500Hz 12dB/octave Butterworth
Rear Low-Pass (LP): 50-500Hz 12dB/octave Butterworth
Remote Controls
Optional PEQ Remote Punch EQ
(overrides built-in Punch EQ2 for rear channels only)
Visual Indicators
Power
Thermal
Protect
Power Wire Gauge
4 AWG
Power Input Connector
Block
Speaker Wire Gauge
8 AWG to 18 AWG
Speaker Output Connector
Screw terminal barrier strip
Cooling
Convection
Heatsink
Operating Voltage
Recommended Fuse
(Not Included)
Average Current Draw (13.8V Music)
Max. Current Draw (13.8V Sinewave)
Suggested Alternator
Included In The Box
Dimensions (H x W x D)
2.25 x 7.625 x 13.02 (in)
5.71 x 19.37 x 33.07 (cm)
Shipping Weight
8.89 Lbs.
(4.03 Kg.)
Compatibility
Support

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Return Authorization

Contact the Authorized Rockford Fosgate Dealer you purchased this product from. If you need further assistance, call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.


Accessories Wiring Wizard

Available Wiring Diagrams

Please consult your amplifier owner's manual for lowest recommended impedance.

This allows FRONT channels to run STEREO speakers while REAR channels run WOOFERS.



Wiring Diagram #1



Wiring Diagram #2



Wiring Diagram #3



Wiring Diagram #4



Wiring Diagram #5



Wiring Diagram #6



Wiring Diagram #7



Wiring Diagram #8



Wiring Diagram #9



Wiring Diagram #10

Speaker Polarity

Your woofer may use one of the following to identify (+/-) terminals.

Positive +

Red Post

Purple (4Ω)

Red (8Ω)

Negative -

Black Post

No Dot

No Dot

Speaker Polarity

Your woofer may use one of the following to identify (+/-) terminals.

Positive +

Red Post

Purple (4Ω)

Red (8Ω)

Negative -

Black Post

No Dot

No Dot

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