R400-4D 400 Watt Full-Range Class-D 4-Channel Amplifier

The PRIME R400-4D is an ultra-efficient 4-channel amplifier producing 100 Watts into four channels at 2-Ohms. Run a 4-way full-range system or use it with components on the front channels with subwoofers on the rear.

  • 12dB/octave Butterworth crossover
  • RCA pass-thru outputs
  • Tri-stage protection covers thermal, over-current and short circuits.
  • On-board Punch EQ with +18dB boost @ 45Hz.
  • 2/4 channel input switch
  • 4 Gauge power/ground connectors
  • Cast aluminum heatsink
  • Top mounted controls
  • 1 Year Standard Warranty warranty info
Full Range Class-D
Class-D

R400-4D

The Prime R400-4D amplifier offers high efficiency through the implementation of its Class-D circuitry while being able to power a full-range system. This amplifier is optimized for 4-channel front/rear systems so you can run midrange/tweeters in the front doors/dash while running midrange/tweeters in the rear doors/deck. Match with a mono amplifier for subwoofers and you'll have a Rockford Fosgate system that any Car Audio Fanatic will envy.


Full Range Class-D

Full Range Class-D

A full-range version of the Class-D topology which is a high efficiency amplifier design that...
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CEA-2006 Compliant

CEA-2006 Compliant

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These...
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P.O.W.E.R.

P.O.W.E.R.

Power supply and output design that allows the amplifier to increase power output as voltage...
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Class-D

Class-D

High efficiency amplifier design that reduces current consumption from the charging system.
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CEA-2006 Compliant:
Number of Channels: 4
Rated Power
(RMS Continuous Power):
75 Watts x 4 @ 4-Ohm
100 Watts x 4 @ 2-Ohm
200 Watts x 2 @ 4-Ohm Bridged
Total Power
(Sum of Rated Power):
400 Watts RMS
Dynamic Power
(PVC/PowerCube® Measurement):
80 Watts x 4 @ 4-Ohms 0° Res
145 Watts x 4 @ 2-Ohms 0° Res
Bridgeable: Yes
Frequency Response: 20Hz to 20kHz +/-1dB
Efficiency (average): 80% @ 4-Ohm
75% @ 2-Ohm
Total Harmonic Distortion (THD+Noise): 4-Ohm: <1.0%
2-Ohm: <1.0%
Crossover Controls: Front: Variable 50Hz - 500Hz @ 12dB/Octave
Rear: Variable 50Hz - 500Hz @ 12dB/Octave
Tone Controls: 0dB to +18dB @ 45Hz
Input Sensitivity: 150 mV to 4 V
Signal Input: Low Level: 2 RCA Pair
Signal Output: Low Level: 1 RCA Pair
Power Input Connector: Block
Power Wire Gauge: 4 AWG
Speaker Output Connector: Block
Speaker Wire Gauge: 12 AWG
Heat Sink Type: Cast aluminum
Cooling: Convection
Remote Controls: -
Visual Indicators: Power
Protect
Circuit Topology Class: Full Range Class-D
Operating Voltage: 9 - 16 VDC
Recommended Fuse
(not included):
50 A
Max. Current Draw (13.8V Sinewave): 50 A
Average Current Draw (13.8V Music): 25 A
Suggested Alternator: 75 A
Shipping Weight: 5.863 Lbs. (2.65 Kg.)
Dimensions (HxWxL): 1.97" x 6.77" x 9.10"
(5cm x 17.20cm x 23.10cm)
Dimensional Diagram:

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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.

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