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Rockford Fosgate Punch HE RFP3812

12" 8-ohm Component Subwoofer

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Item #: 575RFP3812
 
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Our take on the Rockford Fosgate Punch HE RFP3812

by Steven Johnson
Rockford Fosgate

What's a component sub and why would I want one?

A component sub is simply a speaker that's designed to reproduce bass once it's installed in a compatible enclosure. Think about the impact of a movie soundtrack in a big theater or even in your own home HDTV setup. A component sub can add the same kind of power to the music in your car. And a car sub is not all about the boom that you hear on a street corner (although that's cool too) - you can pair a component sub with your choice of enclosure to get bass just the way you like it, from tight and punchy to fat and loose. And once you experience music in your car with a well-tuned subwoofer, you'll never go back.

Watch the competition quiver in the wake of your sonic quake! The Punch HE RFP3812 12" subwoofer delivers the latest in ground-rumbling bass from Rockford Fosgate — and its 8-ohm impedance makes it a great candidate for multiple woofer setups.

Its innovative FIBERlock cone (chemically-bonded, industrial-strength paper) is sturdy and light for powerful low-frequency reproduction. The treated foam surround has a large roll to maximize cone excursion even as it resists water and climatic extremes.

The Punch LXcursion basket is stepped to keep the woofer from bottoming out — that means you can crank up your lows without worrying about the spider hitting the basket. Add a four-layer, 2-1/2" voice coil for powerful sound, and you're ready to slam.

Details:
  • FIBERLock woofer cone
  • large roll foam surround
  • CONsealer gasket hides mounting screws and provides an airtight seal
  • frequency response 28-200 Hz
  • power range 50-200 watts RMS
  • peak power handling 400 watts
  • sensitivity 87.6 dB SPL
  • 8-ohm impedance
  • top-mount depth 5-3/4"
  • sealed box volume 0.9-1.75 cubic feet (1.25 cu. ft. recommended)
  • ported box volume 1.5-2.75 cubic feet (2.0 cu. ft. recommended)
  • Recommended Q-Logic Box Type: 2, 3
  • 1-year warranty
See more info on this item

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

Features and Specs
Size
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12 -inch
Impedance
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8 ohms
Cone Material
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FIBERLock
Surround Material
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Foam
Ideal Sealed Box Volume (cubic feet)
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1.25
Ideal Ported Box Volume (cubic feet)
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2
Port diameter (inches)
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4
Port length (inches)
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10.75
Free-Air
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No
Dual Voice Coil
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No
Sensitivity
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87.6 dB at 1 watt
Frequency Response
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28 - 200 Hz
RMS Power Range (Watts)
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50-200
Peak Power Handling (Watts)
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400
Top Mount Depth (inches)
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5 3/4
Bottom Mount Depth (inches)
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N/A
Cutout Diameter or Length (inches)
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11 1/8
Vas (liters)
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86.4
Fs (Hz)
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29
Qts
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0.533
Xmax (millimeters)
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13
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

  • 12" Woofer
  • Installation and Operation manual (English/Spanish/French/German/Italian)
  • "Team RF" window sticker

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
Enclosure Compatibility

Features

FIBERLock Cone: This high performance paper stock is a combination of natural and regenerated cellulose fibers interlaced with a third, longer fiber. The three natural fibers are chemically fused together with a blend of three interactive binding agents. The extremely high fibril strength and toughness comes from the combination of all six of these component layers. FIBERLock is light, tough and it's proven to have superior sound quality and incredible durability. The cone is then treated with a Thermally Cured Acrylic Emulsion that seals the cone body for exceptional damping and even greater rigidity, resulting in industrial strength power handling.

BART Foam Surround: The BART surround has a large roll to assure maximum cone travel. By increasing cone travel, the BART surround allows the woofer to produce more bass.

Dual Laminated Progressive Flat Spider: The dual laminated progressive flat spider provides a very strong suspension for the woofer. A secondary spider is fused to the primary spider near the critical voice coil bonding point. The combination of the two spiders, in addition to the progressive rolls in the spiders, provides the ultimate in linear control for high excursion capability.

Aluminum Voice Coil Formers: The voice coil formers are aluminum for highly efficient heat transfer. This allows the use of multiple layers of high temperature copper windings for improved efficiency, and it improves power handling by effectively dissipating heat away from the voice coil windings.

LXcursion Stamped Basket: The Punch woofers use a durable and lightweight stamped cold rolled steel basket. To help prevent the spider from hitting the bottom of the basket ("soft bottoming"), the LXcursion basket features a deep step that moves the physical boundaries of the basket further away from the spider; this allows the cone far greater travel and, therefore more bass, without soft bottoming.

Hyper-Extended Pole Piece: The pole piece is extended in length to lower distortion and provide better low frequency response by operating the voice coil in a linear fashion throughout its travel in the magnetic field.

Vented Bumped Back Plate: The back plate has been bumped to allow the woofer more room for excursion without bottoming out. Additionally, "Aerovent" cooling efficiently and quietly circulates cool air around the voice coil using a back plate that is vented with a radiused aerodynamic back vent. By keeping the voice coil cooler, power handling is improved.

CONsealer Gasket: A newly designed front gasket conceals mounting screws and provides an airtight seal between the woofer frame and the mounting surface. A better seal increases the amount of bass due to the elimination of air leaks.

Rubber Magnet Boot: A black rubber boot covers the exposed edge of the magnet structure to improve the cosmetics of the woofer and protect the magnet during installation. The rubber boot looks great when the woofer is mounted in an enclosure with a window that allows you to see the back of the woofer. 

Enclosure Compatibility

Recommended Sealed Box Volume: The sealed box volume range recommended by Rockford Fosgate is 0.9 cu/ft to 1.75 cu/ft. Within this range, the ideal size recommended by Rockford Fosgate is 1.25 cu/ft.

Recommended Ported Box Volume: The ported box volume range recommended by Rockford Fosgate is 1.5 cu/ft to 2.75 cu/ft. Within this range, the ideal size recommended by Rockford Fosgate is 2.0 cu/ft. One 4" diameter x 10-3/4" long port, tuned at 35Hz, should be used with a 2.0 cu/ft enclosure.

 
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