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Rockford Fosgate Punch P8004

4-channel car amplifier
100 watts RMS x 4 (New Stock)

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  • Rockford Fosgate Punch P8004

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  • Rockford Fosgate Punch P8004

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Item# 575P8004
 

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Our take on the Rockford Fosgate Punch P8004

by Tim Sprinkle
Rockford Fosgate

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Don't let your sound system dance around the ring; fire up a 4-channel Punch series amplifier from Rockford Fosgate and enjoy a knockout performance every time! These amps will sting your speakers with plenty of clean power, while serving up the sound-shaping controls and high-quality components you need to create a heavyweight audio system.

Slam your component speakers with a one-two combination of power and control with the Punch P8004 amplifier! With its innovative circuit design, MOSFET output stages, and proprietary technology, the P8004 will bring out extraordinary detail in your music, with ultra-clean power you just can't get from a lesser amp. You get 100 watts RMS per channel x 4 (plenty for 2 sets of even the most power-hungry component speakers), or you can bridge the P8004 for 400 watts RMS x 2!

The pros at Rockford Fosgate know that it takes more than just muscle to create a prize-winning car audio system. That's why the P8004 is equipped with variable high- and low-pass crossovers — which minimize distortion by sending your speakers only the frequencies that they can handle — and a Punch bass boost (0-18 dB at 45 Hz) with wired remote for hands-on control. You choose the right settings for your car, your speakers, and your ears.

Highlights:

  • 4-channel car amplifier
  • 100 watts RMS x 4 at 4 ohms (200 watts RMS x 4 at 2 ohms)
  • 400 watts RMS x 2 at 4 ohms (4-ohm stable in bridged mode)
  • 2-, 3-, or 4-channel output
  • CEA-2006 compliant
  • Tri-way capable (Tri-Way crossover required)
  • requires a 4-gauge wiring kit and a 150-amp fuse — wiring and hardware not included with amplifier
  • MOSFET power supplies and output stages
  • MEHSA transfers heat efficiently from the MOSFET devices to the heat sink for high performance
  • TOPAZ eliminates ground loop noise
  • trans-ANA circuitry keeps preamp signal clean
  • NOMAD "intelligent" protection circuitry
  • preamp inputs and outputs
  • variable high-pass/low-pass crossover (40-400 Hz, 12 dB/octave)
  • variable Punch Bass boost (0-18 dB at 45 Hz) with remote
  • 17-5/8"W x 2-3/8"H x 11-1/4"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
 

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
Performance
RMS Power Output (Watts x Channels)
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100 x 4
Peak Power Output (Watts x Channels)
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800 x 4
Power at 2 Ohms (Watts x Channels)
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200 x 4
Bridged Power (Watts x Channels)
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400 x 2
Minimum Impedance Bridged
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4
Minimum Impedance Unbridged
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2
Best Frequency Response
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20-200k Hz
THD at Rated RMS Power
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0.05%
Signal to Noise Ratio
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80 dB
Input Voltage
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14.4v
Features
Amplifier Class
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AB
Low-Pass Crossover Frequency
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40-400 Hz
Low-Pass Slope (dB/octave)
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12 dB
High-Pass Crossover Frequency
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40-400 Hz
High-Pass Slope (dB/octave)
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12 dB
Bass Boost
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0-18 dB
Bass Boost Frequency
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45 Hz
Fan Cooled
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No
Fuse Rating
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40 x 3
Speaker Level Inputs
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No
Preamp Outputs
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1 pair
Width (inches)
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17-5/8
Height (inches)
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2-3/8
Depth (inches)
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11-1/4
Parts Warranty
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1 Year
Labor Warranty
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1 Year
Product Research
What's in the box?

Download owner's manual

  • 4-Channel amplifier with 2 removable chrome covers
  • 4 Allen-head screws (installed)
  • 3mm Allen wrench
  • 4 Self-tapping screws (M4 x 20mm)
  • Remote Punch Bass controller
  • Remote controller mounting bracket
  • 3 Self-tapping screws (2.5mm diameter x 10mm)
  • 16.25' Flat remote cable (with RJ-45 plugs on both ends)
  • Installation & Operation manual (English/French/Spanish/German/Italian)
  • Punch Amplifier Performance Verification Certificate

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features
Inputs and Outputs Notes
Specifications
Wiring Recommendation

Features

Removable Chrome Covers: The Rockford Fosgate Punch P8004 amplifier features dual removable chrome covers. One of the covers conceals all speaker, signal, remote, power and ground connections, as well as the gain and crossover frequency controls for a cleaner installation.

Cast Aluminum Heatsink: The cast aluminum heatsink dissipates heat generated by the amplifier's circuitry. The inherent advantage of casting provides a 30% improvement of cooling over conventional extrusion heatsink designs.

MEHSA (Maximum Efficiency Heat Sink Application): MEHSA is a Rockford Fosgate proprietary process that increases the heat transfer from the MOSFET devices to the heatsink. The multi-layer insulated metal MEHSA substrate operates with minimal thermal resistance, spreading heat both downward and outward to quickly dissipate heat from each device across the heatsink. This allows greater power output, enhanced thermal stability, and maximum reliability.

TOPAZ (Tracking Operation Pre-Amplifier Zone): TOPAZ is a circuit that simply eliminates noise. The TOPAZ circuit allows the amplifier ground to move with the source unit ground, creating a "noise elimination" zone just before the preamp section. If there is any noise in the ground coming down the RCA line to the amplifier, TOPAZ amazingly tracks it down and eliminates it. The result is a 30-40dB improvement of the isolation between input ground and chassis ground. 

Trans-ANA (TRANSconductance Active Nodal Amplifier): Trans-ANA is a circuit that allows the audio signal to pass through the amplifier at low voltage. The signal is directly level-shifted to the fixed high voltage rails via a pair of drive transistors. Signal linearity is assured by an active node formed  by the drive transistors at ultrasonic frequencies. The result is crystal clear sound quality.

NOMAD (NOn-Multiplying Advanced Decision): NOMAD is an intelligent protection circuit that uses an analog computer to make real time decisions regarding temperature, voltage, current and impedance. The unit is protected without limiting sound output unless needed.

DSM (Discrete Surface Mount): In the manufacturing process high speed robotics are used to place 0% tolerance resistors and large board traces providing greater reliability and efficiency.

TO-247 MOSFET: The Punch P8004 utilizes ultra high performance MOSFET output devices, giving the amplifier more power handling capability as well as lower thermal impedance for more reliable operation, even under the harshest load conditions.

2/4-Channel Switch: The P8004 can be switched from a 4-channel mode to a 2-channel mode by pressing in the 2/4-channel switch. When operating in the 2-channel mode, the amplifier produces 4-channels of output with connections to only the front channel inputs.

Internal Crossovers: The amplifier's internal front and rear crossovers are 12dB/octave Butterworth filters, independently selectable for high-pass, all-pass (full range) or low-pass operation variable from 40Hz to 400Hz.

Remote Punch Bass: The Punch Bass helps correct for acoustical deficiencies in the listening environment by helping reproduce full range sound without adding excessive boost. The Punch Bass control has a narrow band adjustment centered at 45Hz, variable from 0dB to +18dB. Using the mounting bracket, the supplied Punch Bass wired remote can be mounted in any convenient location. The module's case can be configured with the bracket above or below the module, or, without the case, mounted flush in your vehicle's dash (requires a 2" x 7/8" cutout with a maximum thickness of 3/8"). The wired remote is 2.281" wide, 1.214" tall and 1.509" deep (2.471" including the knob and cable connection). The included cable is 16.25' in length.

RCA Pass-Thru Jacks: The pass-thru jacks provide a convenient source for daisy-chaining an additional amplifier without running an extra set of RCA cables from the front of the vehicle to the amplifier location. The pass-thru jacks output a full-range signal.

Power Indicator and Protection LEDs: The RF logo, located on the top left of the amplifier, illuminates when the unit is turned on. The "Swirl" portion of the logo illuminates with the output signal level. A yellow "Protect" LED, located next to the RF logo, illuminates if a short circuit or too low of an impedance is detected at the speaker connections. Another yellow LED, labeled "Thermal", illuminates if the amplifier overheats. The amplifier will automatically shut down if either of the two LEDs indicate amplifier trouble.

Inputs and Outputs Notes

Power Connections: The power and ground terminals are nickel-plated captive c-clamp wire connectors and will accommodate up to 4-gauge wire. The remote turn-on terminal will accept wire sizes of 12- to 24-gauge. A Phillips-head or slotted screwdriver (not supplied) is required to tighten/loosen the terminals.

Speaker Connections: The 4-channel nickel-plated clamp wire connectors will accept wire sizes of 8- to 18-gauge. A Phillips-head or slotted screwdriver (not supplied) is required to tighten/loosen the terminals.

Remote Punch Bass Connection: An RJ-45 jack is provided for connecting the supplied Remote Punch Bass cable.

Specifications

CEA-2006 Compliance: The specifications given by Rockford Fosgate for the Punch P8004 amplifier comply with the new CEA-2006 Amplifier Power Standard from the CEA (Consumer Electronics Association). All manufacturers who comply with the standard can display the CEA-2006 logo on their product.

Performance Verification Certificate: Each amplifier comes with a Performance Verification Certificate which lists the results of a 10-point performance inspection as well as measure the actual power output. The actual amplifier reviewed by Crutchfield produced 122 watts RMS per channel at 4 ohms, and 979 total watts at 2 ohms. The amplifier is rated at 100 watts RMS per channel at 4 ohms and 800 total watts at 2 ohms.

Dimensions: 

  • Without Covers: Width=17.625", Height=2.419", Depth=10.898"
  • With Covers Installed: Width=17.625", Height=2.363, Depth=11.228"

Wiring Recommendation

Amplifier Wiring: The Punch P8004 amplifier uses three 40-amp fuses, so its total fuse rating is 120 amps. Since pre-packaged 4-gauge amplifier wiring kits normally have 60-amp or 80-amp fuses, you will need to replace the fuse and fuse holder in the kit with a 150-amp ANL fuse (item # 211ANL150) and ANL fuse holder (211FH4ANL).

 
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Rockford Fosgate Punch P8004 Reviews

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5 out of 5

AMP WORTH THE MONEY

Written By Alejandro, TEXAS on Saturday, August 26, 2006
Crutchfield Customer Review (What's this?)
 
I BOUGHT THIS AMP ABOUT ONE MONTH AGO TO POWER MY POLK MOMO COMPONENT SPEAKERS. WHAT A DIFFERENCE I NOTICED WHEN I INSTALLED THIS AMP. MY OLD AMP MADE THAT ANNOYING HUMMING NOISE AND WASN'T PUSHING ENOUGH POWER TO MY COMPONENTS. NOW MY COMPONENTS SOUND CRYSYAL CLEAR AND ARE LOUD. NO MORE NOISES FROM MY AMP. I RECOMEND THIS AMP IF YOU HAVE A SET OF COMPONENT SPEAKERS.
11 out of 13 people found this helpful
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