Rockford Fosgate Punch Marine 400 Watt 4-Channel Amplifier - PM400X4
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The PM400X4 is a 400 Watt 4-channel amplifier with high dynamic power using Class-a/b technology and a conformal coated pc board designed for motorsport and marine applications.

Overview

The PM400X4 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 PM400X4 is an excellent amplifier choice for virtually any vehicle.

  • High level input capable with Auto Turn-On circuit
  • Features C.L.E.A.N. Set-up
  • 12dB/octave Butterworth crossover
  • On-board Punch EQ with +18dB boost @ 45Hz
  • Muted turn on
  • Stealth top mounted control panel
  • Cast aluminum heatsink
  • Short circuit protection
  • Over current protection
  • Marine grade two part epoxy coating on circuit boards
  • Marine grade stainless steel hardware
  • 2-Year Warranty

Technologies

Element Ready™ - Amps

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

CE Compliant

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

CEA-2006 Compliant

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.

Balanced Differential Inputs

Differential inputs eliminate noise picked up by signal cables.

TRANS•ana

Trans•ana is a Class A/B topology that simplifies the signal path of the amplifier allowing the signal to travel through the amplifier at a lower voltage. The result is greater reliability and exceptional sound quality.

DTM

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

DSM

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

MEHSA3

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

NOMAD

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

C.L.E.A.N. Set-Up

C.L.E.A.N. (Calibrated Level Eliminates Audible Noise) is a patented circuit with in/out clip LEDs to help match a source to amp and optimize output.

Specifications
Recommended Fuse (not included)60 A
Max. Current Draw (13.8V Sinewave)60 A
Average Current Draw (13.8V Music)30 A
Total Harmonic Distortion (THD+Noise)4-Ohm: <1.0%
2-Ohm: <1.0%
Efficiency (average)67% @ 4-Ohm
Dynamic Power (PVC/PowerCube®)82 Watts x 4 @ 4-Ohm
137 Watts x 4 @ 2-Ohm
266 Watts x 2 @ 4-Ohm Bridged
Shipping Weight10.8 Lbs. (4.89 Kg.)
Operating Voltage9 - 16 VDC
Number of Channels4
Crossover ControlsFront High-Pass/Low-Pass (HP/LP): 50Hz-250Hz @ 12dB/octave Butterworth
Rear High-Pass/Low-Pass (HP/LP): 50Hz-250Hz @ 12dB/octave Butterworth
All-Pass: Yes
Suggested Alternator75 A
Input Sensitivity150 mV - 12 V
Rated Power (RMS Continuous Power)50 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
Tone ControlsFront Punch EQ2 Bass: 0dB to +18dB @ 45Hz and/or
Front Punch EQ2 Treble: 0dB to +12dB @ 12.5kHz
Rear Punch EQ2 Bass: 0dB to +18dB @ 45Hz and/or
Rear Punch EQ2 Treble: 0dB to +12dB @ 12.5kHz
Function depends upon LP/AP/HP switch position
BridgeableYes
Signal InputHi/Low level: 2 RCA pair
Signal Output-
Speaker Wire Gauge8 AWG to 18 AWG
Speaker Output ConnectorCaptive C-Clamp
Power Wire Gauge8 AWG to 4 AWG
Power Input ConnectorCaptive C-Clamp
Heat Sink TypeCast aluminum
Remote Controls-
CoolingConvection
Visual IndicatorsPower/Protect/Thermal LED
Input Clip LED3
Output Clip LED1,2,3
LED Color Legend:
1BLUE: <0.5% THD
2VIOLET: 1% THD
3RED: 10%+ THD
Circuit Topology ClassClass A/B
Frequency Response20Hz to 20kHz +/- 1.0dB
Dimensions (H x W x D)2.38 x 7.76 x 11.03 (in)
6.05 x 19.71 x 28.02 (cm)

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