M400-4D

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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Discontinued
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.

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

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

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CE Compliant

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

Element Ready™ - Amps

These amplifiers are protected against Dust, UV, Corrosion, and feature Stainless hardware.

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Element Ready™ - Amps

These amplifiers are protected against Dust, UV, Corrosion, and feature Stainless hardware.

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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Full Range Class-D

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

CEA-2006

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

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CEA-2006

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These guidelines mean your amplifier's output power ratings are REAL POWER numbers, not inflated marketing ratings.

Specifications
CEA-2006 Compliant
CEA-2006 Guidelines CEA-2006 Power Rating
75W x 4 @ 4Ω
≤1.0% THD+N
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
Dimensional Diagram
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

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.


View Process

Accessories Wiring Wizard

Available Wiring Diagrams

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



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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