Prime Marine 400 Watt Full-Range Class-D 4-Chanel Amplifier M400-4D

Front View of Amplifier
Profile View of Amplifier
Amplifier Input and Output Side View
Top View of Amplifier
Right Side View of Amplifier
Amplifier Installation View
Left Side View of Amplifier
Front View of Amplifier
Profile View of Amplifier
Amplifier Input and Output Side View
Top View of Amplifier
Right Side View of Amplifier
Amplifier Installation View
Left Side View of Amplifier
Front View of Amplifier
Profile View of Amplifier
Amplifier Input and Output Side View
Top View of Amplifier
Right Side View of Amplifier
Amplifier Installation View
Left Side View of Amplifier

Prime Marine 400 Watt Full-Range Class-D 4-Chanel Amplifier M400-4D

The M400-4D is a 400 Watt 4-channel high efficiency Class-D marine amplifier featuring a Marine grade PC Board, on-board Punch EQ, variable crossover and tri-state protection circuits.

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Overview Technologies Specifications Support Accessories Wiring Wizard
Overview

The Prime M400-4D amplifier is a 400 Watt 4-channel high efficiency Class-D amplifier specifically designed for Marine and Powersport applications. The amplifier features a Marine grade PC Board, and the Class-D circuit topology is so efficient, it consumes much less current from your charging system over traditional Class-A/B amplifiers.

FEATURES AT A GLANCE

  • Top mounted controls
  • Cast aluminum heatsink
  • 4 Gauge power/ground connectors
  • Marine grade 2-part epoxy coated PCB
  • 2/4 channel input switch
  • 12dB/octave Butterworth crossover
  • Tri-stage protection covers thermal, over-current and short circuits.
  • On-board Punch EQ with +18dB boost @ 45Hz
  • 2-Year Warranty
Technologies
Element Ready™ | Amps

All components are protected against harsh outdoor elements like Dust, UV, Temperature, Water, Corrosion & Vibration.

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CEA-2006

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

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CE Compliant

This product fulfills all essential safety and environmental requirements as defined in the European Directives (768/2008 ...

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Full Range Class-D

A full-range version of the Class-D topology which is a high efficiency amplifier design that reduces ...

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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)
  75 Watts x 4 @ 4-Ohm
100 Watts x 4 @ 2-Ohm
200 Watts x 2 @ 4-Ohm Bridged
Dynamic Power
(PVC/PowerCube®)
  79 Watts x 4 @ 4-Ohm
138 Watts x 4 @ 2-Ohm
255 Watts x 2 @ 4-Ohm Bridged
Bridgeable
Yes
Frequency Response
20Hz to 20kHz +/-1dB
Input Sensitivity
Circuit Topology Class
Full-Range Class D
Efficiency (average)
80% @ 4-Ohm
75% @ 2-Ohm
Total Harmonic Distortion (Thd+Noise)
Signal Input
Low Level: 2 RCA Pair
Signal Output
Low Level: 1 RCA Pair
Tone Controls
0dB to +18dB @ 45Hz
Crossover Controls
Front Channels: Variable 50Hz - 500Hz @ 12dB/octave
Rear Channels: Variable 50Hz - 500Hz @ 12dB/octave
Remote Controls
n/a
Visual Indicators
Power
Protect
Power Wire Gauge
4 AWG
Power Input Connector
Block
Speaker Wire Gauge
12 AWG
Speaker Output Connector
Block
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)
1.97" x 6.77" x 9.10"
(5cm x 17.20cm x 23.10cm)
Shipping Weight
5.863 Lbs.
(2.65 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
Front View of Complete Installation Kit

4 AWG Complete Installation Kit

RFK4X
read more...
Front View of Inline Audio Signal Level Control installed on Panel Mount

Universal Punch Level Control

PLC-U
read more...
Three Quarter Beauty Shot of High-to-Low Converter

4-Channel High-to-Low Converter

RF-HLC4
read more...
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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Complete Your System

Rockford Fosgate products are built to work together seamlessly for the ultimate experience.

Prime Marine 400 Watt Full-Range Class-D 4-Chanel Amplifier +

Prime Marine 6.5" Full Range Speakers - Black

RM1652B

The RM1652B Prime 6.5" is a 2-way component system with a coaxially integrated tweeter featuring marine grade weather proofing technologies. Supplied in all black with matching grille.

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  • RM1652B

Prime Marine 6.5" Full Range Speakers - Black

The RM1652B Prime 6.5" is a 2-way component system with a coaxially integrated tweeter featuring marine grade weather proofing technologies. Supplied in all black with matching grille.

View Product

Click to explore some of the products that work best.

RM1652B

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