400 Watt 4-Channel Amplifier P400-4

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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 Technologies Specifications Support Accessories Wiring Wizard
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

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

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

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DTM

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

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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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MEHSA3

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

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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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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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NOMAD

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

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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

Knowledge Base Articles


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Ask Our Experts

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.


Return Authorization Process



Diagnose First

Prior to requesting an RA, try to diagnose the failure. Many products we receive are sent back with No Trouble Found, usually due to incorrect installation. Use our RFTECH:Knowledge Base for troubleshooting assistance.



Contact Customer Support

Please call us during normal business hours at 1-800-669-9899 (option #1) and be prepared with the following information:

  • First and Last Name with complete Shipping Address
  • Product Name (T0D415)
  • Serial Number (12 or 13 digit number)
  • Failure Diagnosis (no output, no power LED, etc.)
  • Scanned copy of Original Receipt emailed to [email protected] (dealer name, purchase date, and item purchased must be legible)
  • Credit/Debit Card (if paying for out-of-warranty claims)
  • No money orders or checks.


Shipping Instructions

When shipping your product, your package MUST have the following information:

  • RA# Printed Outside of Box (as large as possible)
  • Copy of Original Receipt


Shipping Address

Ship your product (UPS or FedEx preferred) to the following:


Rockford/ AJR International
300 Regency DR
Glendale Heights, IL 60139
RA#:_______________________
Accessories
Three Quarter Beauty Shot of Remote Equalization Control for Select Amplifiers

Remote Punch EQ (2007+ Amps)

PEQ
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Front View of Power Installation Kit

4 AWG Power Installation Kit

RFK4
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Front View of Power and Signal Installation Kit

4 AWG Power & Signal Installation Kit

RFK4I
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Front View of Complete Installation Kit

4 AWG Complete Installation Kit

RFK4X
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Three Quarter Beauty Shot of Positive-Negative Battery Terminal

4 AWG Positive/Negative Battery Terminal

RFDB4
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Front View of Complete Dual Amp Installation Kit

4 AWG Complete Dual Amp Installation Kit

RFK4D
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Front View of 1/0 Power Installation Kit

1/0 Power Installation Kit

RFK1
read more...
Front View of Dual Amp 1/0 AWG Dual Amp Wiring Kit

Dual Amp 1/0 AWG Dual Amp Wiring Kit

RFK1D
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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

FAQ

Determining power needed for speakers

Prevent blowing your subwoofers

Temperature differences between subwoofer voice coil types

Differences between SVC and DVC subwoofers

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

FAQ

Determining power needed for speakers

Prevent blowing your subwoofers

Temperature differences between subwoofer voice coil types

Differences between SVC and DVC subwoofers

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