GRS 12PF-8 12" Paper Cone Foam Surround Woofer

Brand:| Model: 12PF-8
GRS 12PF-8 12" poly-laminated paper cone woofers are perfect for use in sealed-box home theater and music systems.
  • 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: 3.85 lbs.  
List Price$19.99
You Save20%
Your Price
Buy 4-up$12.70
Part # 292-412
Qty:  EA
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Product Details

GRS 12PF-8 12" Paper Cone Foam Surround Woofer

GRS 12PF-8 12" poly-laminated paper cone woofers are perfect for use in sealed-box home theater and music systems. Thanks to their carefully optimized parameters, GRS 12PF-8 12" 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 Diameter12"
  • Power Handling (RMS)120 Watts
  • Power Handling (max)240 Watts
  • Impedance8 ohms
  • Frequency Response35 to 5,000 Hz
  • Sensitivity87 dB 1W/1m
  • Voice Coil Diameter1.5"
Thiele-Small Parameters
  • Resonant Frequency (Fs)35 Hz
  • DC Resistance (Re)7.56 ohms
  • Voice Coil Inductance (Le)1.15 mH
  • Mechanical Q (Qms)5.97
  • Electromagnetic Q (Qes)2.08
  • Total Q (Qts)1.54
  • Compliance Equivalent Volume (Vas)5.28 ft.³
  • Maximum Linear Excursion (Xmax)3.5 mm
Materials of Construction
  • Cone MaterialTreated Paper
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter12"
  • Baffle Cutout Diameter11.0625"
  • Depth4.69"
  • # Mounting Holes6
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume2.92 ft.³
  • Sealed F340 Hz
  • Vented Volume73 ft.³
  • Vented F319 Hz
GRS 12PF-8 12" Paper Cone Foam Surround Woofer
  • BrandGRS
  • Model12PF-8
  • Part Number292-412
  • UPC844632088490
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (21 Reviews)
  • Weight3.85 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 12PF-8 12" Paper Cone Foam Surround Woofer
GRS 12PF-8 12" Paper Cone Foam Surround Woofer is rated 4.381 out of 5 by 21.
Rated 5 out of 5 by from Solid purchaseThese are a great pair of speakers for the price. Just updated my old Cerwin-Vegas and they make an excellent upgrade to the old woofers that were falling apart.
Date published: 2014-09-02
Rated 5 out of 5 by from Great sound at a great price!I have a pair of Kenwood JL955WAV speakers. When I got them, the speakers had the foam rubber completely deteriorated around the cones. It would have cost me more to have those speakers repaired. So, I purchased a pair of new speakers. When I installed them and hooked them up to my stereo system, the sound was mind-blowing. I would highly recommend these speakers to anyone. You cannot beat the sound or the price!
Date published: 2014-05-05
Rated 4 out of 5 by from Fixing up an old friendI purchased these woofers to rebuild a set of KLH cabs that I picked up on the side of the road. There were no drivers in them, and still need a little bit of work, but along with some new mids to go in as well they are turning out well.These woofers sound great, a lot better than the DVC subs I had in them before.
Date published: 2014-03-04
Rated 3 out of 5 by from You get with what you pay for.I'd figure these would replace the old ones I had with a lot more boom, but they can only handle so much power for what I do. They're pretty good, I'm not gonna lie, but up to a certain volume of sound.
Date published: 2014-01-30
Rated 4 out of 5 by from Good value for the moneyI recently bought 2 of these speakers to replace a pair of broken subwoofers. These are fairly inexpensive subs. but the bass produced by them is very good and loud.They are definitely worth the money.
Date published: 2013-09-25
Rated 3 out of 5 by from They work well in my homemade garage stereoBuilt a set of speakers about 3 years ago using Birch with 12" woofers from a set of B&W loud speakers. The boxes are garage quality and were built solid. Needless to say the 30+ year old foam surrounds on the woofers crumbled to dust under heavy use from a 500 watt 40 year old JVC amp that was imported from Germany. Condition as arived was good on one woofer and less than par on the other woofer with a bent basket that i had to straighten out to mount. Overall sound quality is way better than i originally thought. Very punchy and not alot of boom. With my soft dome RS midranges and a set of P-E blowout 1" softdome tweeters, these added new life to a set of garage speakers that get a pounding on a regular basis. Sad thing is I want to swap them with my home speakers...
Date published: 2013-08-17

Product Q&A

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who own this product or have experience with it.
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GRS 12PF-8 12" Paper Cone Foam Surround Woofer

GRS 12PF-8 12" woofer. Will it be a good replacement for Kenwood JL 750W system woofer?

Asked by: Mojonm
Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-08-04

I need to replace a 12" subwoofer in a infinite 3000p speaker. Would this work? If not, what would be a better, price efficient option?

Asked by: easymachtdas
The best option for that speaker would be our Dayton Classic 12" which you can see below.http://www.parts-express.com/dayton-audio-dc300-8-12-classic-woofer--295-320
Answered by: MattP
Date published: 2014-08-04


Asked by: JARON
The best woofer for these cabinets would be our Dayton Series II 12" woofers which you can see below.http://www.parts-express.com/dayton-audio-st305-8-12-series-ii-woofer--295-120
Answered by: MattP
Date published: 2014-04-17

Ordered 4 of these to replace 4-12's in my "91" Sony 270 watt max speaker box with a tweeter and mid range up top.Pulled  2-12" woofers out of 1st box, realized the bottom 12" woofer was not wired and are no more than a baffle of sort. Wire both in ? or ?

Asked by: Smythe
It sounds like Sony used a single woofer and passive radiator design. In order to wire both together, you would have to make sure your amplifier can handle a 4 ohm load. If it can, Wiring both together will give you smoother bass response but if it cannot handle a 4 ohm load you will have to leave one unhooked.
Answered by: MattP
Date published: 2014-03-27

how good or bad would this work in my tower that has 2.239 Ft3 even though the woofer optimum sealed volume is  2.92 ft.³? my tower has a 2 inch tweeter and a 4 inch mid range if that will effect anything . 

Asked by: Crazzed335
Yes this will still work in that volume as long as it is sealed.
Answered by: MattP
Date published: 2013-12-02

subwoofer use?

can this be used as a subwoofer and be loud with 80W?
Asked by: speaker freack
This would not be ideal as a subwoofer with that much power. You would be better off using something like the DCS305-4 below.
Answered by: MattP
Date published: 2013-09-12

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