GRS 8PF-8 8" Paper Cone Foam Surround Woofer

Brand:| Model: 8PF-8
If you are looking for a low-cost, high-performance 8" replacement speaker, check out the GRS 8PF-8!
  • Perfect for use in sealed-box home theater and music systems
  • Poly-laminated paper cone, treated foam surround, and polymer dust cap
  • Smooth frequency response with minimal cone breakup
Part # 
Weight: 2.95 lbs.  
List Price$13.99
You Save20%
Your Price
Buy 4-up$9.00
Part # 292-408
Qty:  EA
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Product Details

GRS 8PF-8 8" Paper Cone Foam Surround Woofer

If you are looking for a low-cost, high-performance 8" replacement speaker, check out the GRS 8PF-8! Thanks to their carefully optimized parameters, GRS 8PF-8 8" poly-laminated paper cone woofers offer a high degree of compatibility when used as replacement speakers—they also provide excellent performance in new projects, too.

Product Specifications
  • Nominal Diameter8"
  • Power Handling (RMS)100 Watts
  • Power Handling (max)200 Watts
  • Impedance8 ohms
  • Frequency Response55 to 6,000 Hz
  • Sensitivity87 dB 1W/1m
  • Voice Coil Diameter1.5"
Thiele-Small Parameters
  • Resonant Frequency (Fs)51 Hz
  • DC Resistance (Re)7.59 ohms
  • Voice Coil Inductance (Le)1.11 mH
  • Mechanical Q (Qms)4.58
  • Electromagnetic Q (Qes)1.17
  • Total Q (Qts)0.93
  • Compliance Equivalent Volume (Vas)0.95 ft.³
  • Maximum Linear Excursion (Xmax)3 mm
Materials of Construction
  • Cone MaterialPaper
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter8"
  • Baffle Cutout Diameter7.32"
  • Depth3.44"
  • # Mounting Holes4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume1.3 ft.³
  • Sealed F354 Hz
  • Vented Volume4.91 ft.³
  • Vented F330 Hz
GRS 8PF-8 8" Paper Cone Foam Surround Woofer
  • BrandGRS
  • Model8PF-8
  • Part Number292-408
  • UPC844632088476
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (26 Reviews)
  • Weight2.95 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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GRS 8PF-8 8" Paper Cone Foam Surround Woofer
GRS 8PF-8 8" Paper Cone Foam Surround Woofer is rated 4.5 out of 5 by 26.
Rated 5 out of 5 by from great sound for the costI bought this as a replacement woofer, I like it so well I am going to replace the other one as well
Date published: 2015-03-10
Rated 5 out of 5 by from Great value, great soundOrdered a pair of these to refurb a pair of Studio Master cabinets on the cheap for a pair of garage speakers. Got them put together tonight, and couldn't believe the sound and power handling capability vs. the price.
Date published: 2015-01-08
Rated 1 out of 5 by from cheapo wooferVery quiet. Can talk over it at its loudest volume. Breaks up and cuts out before getting 50 watts. Won't buy again
Date published: 2014-08-11
Rated 4 out of 5 by from great mid rangeI put a set of these in some old tower speakers and they really brought the mid range to where it needed to be. The grs 8pf-8 wont go crazy low or super high so keep that in mind.
Date published: 2014-08-05
Rated 5 out of 5 by from Good Sound / EPI 201The original woofers in my EPI 201s finally gave up. I could not find the specs for that woofer and decided to try these. The 201 has 2 woofers per cabinet but I bought only 1 each in order to give them a try. The second failed woofer was left in place.Very happy with the sound after using them for 3 months. Great mid-bass as others have noted but they may not extend quite as low as the originals on material such as organ pedal notes. We'll see when I install 2 more, as I intend to do given the sound quality and price.Will be making adjustments to account for the 1.8 kHz crossover point.Build quality was fine on the 2 I have now... Great deal!Will be loo
Date published: 2014-04-30
Rated 5 out of 5 by from Excellent replacement speakers!GRS 8PF... excellent product, excellent price, excellent sound!! Re-fitted some MicroAcoustic speakers (Bose 301 copies) circa 1979, they sound awesome with good bass response and full midrange. Simple installation as well.
Date published: 2014-04-14
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Product Q&A

Get your questions answered from other customers
who own this product or have experience with it.
If your question requires design or troubleshooting information,
please email tech@parts-expresss.com  for a prompt reply.
GRS 8PF-8 8" Paper Cone Foam Surround Woofer

Need 4 ohm load in an OB project. Would 2 of these work paralleled to get my desired load? Tweeter offset between the two. Desired range is about 80Hz -- 5K. The 4ohm Goldwood doesn't seem to be reviewed with quite the enthusiasm.

Asked by: ibroke
These will work well OB down to 80 Hz, although 5k is a stretch for any 8" woofer. I would recommend using a tweeter that can cross lower (maybe 1,800-2kHz), or adding a midrange.
Answered by: MattP
Date published: 2015-02-18

are the grs-8PF-8 8 inch speakers good for a small pa speaker replacement

Asked by: corny
Probably not. PA and musical instrument speakers have a higher SPL rating than home audio speakers such as the GRS. This means that it will not play nearly as loud as the original speaker, possibly making the high frequency speaker sound over-bearing. Not what you want! Go with a pro-audio type woofer.
Answered by: Eric Chandler
Date published: 2014-06-03

How would this woofer perform as mid duty? I have a 12" goldwood woofer that I was planning on using for the lows and I have a few of these sitting around and was wondering if they would work.

Asked by: Jinonyx
Usually an 8" speaker will only play conservatively up to about 2,000 Hz before it starts to beam. If you pick a tweeter that will safely cross this low it should not be a problem.
Answered by: MattP
Date published: 2014-01-28

Would these work in an open baffle situation? The q values tell me it would, and Im not very concerned with the Xmax because they'll be used with a bandpass

Asked by: dkward00
Yes these will work for an open baffle application.
Answered by: MattP
Date published: 2014-01-17

Could these work in a 2-way system

I would like to build some budget speakers for my garage and I was wondering if these would work in a woofer/tweeter type system, if so, what would be the x-over point for the tweeter?
Asked by: safeTguy
These could work as a two way assuming your tweeter can cross over low enough. I cannot recommend a crossover point without knowing which tweeter you plan on using.
Answered by: MattP
Date published: 2013-10-29

How about 2 per 1.77 cu.ft. sealed enclosure?

My woofer airspace is 1.77 cu.ft. Sealed box not including the woofers themselves or "stuffing".I Was considering these or the Dayton classic 8" 295-310 for sealed double woofer duty? Thanks.
Asked by: Doofus
The GRS would be better suited for a sealed enclosure. You can expect in room response into the upper 30's/lower 40's relatively easily.
Answered by: MattP
Date published: 2014-08-26
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