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Manuals & Resources

GRS 12PR-8 12" Poly Cone Rubber Surround Woofer

Brand:|Model: 12PR-8
A GRS 12PR-8 12" 8 ohm polypropylene cone woofer is a good, economical way to repair older speaker systems or create new projects.
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List Price$24.99
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Part # 292-422
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Highlights
  • Polypropylene cone for perfect balance of stiffness, mass, and self-damping
  • Butyl rubber surround ensures high excursion and long term durability
  • Stamped steel frame keeps components in perfect alignment
  • Optimized motor features high-energy ceramic ferrite magnet, vented pole piece

Product Details

GRS 12PR-8 12" Poly Cone Rubber Surround Woofer

A GRS 12PR-8 12" 8 ohm polypropylene cone woofer is a good, economical way to repair older speaker systems or create new projects.



Product Specifications
  • Nominal Diameter12"
  • Power Handling (RMS)100 Watts
  • Power Handling (max)140 Watts
  • Impedance8 ohms
  • Frequency Response30 to 3,000 Hz
  • Sensitivity84 dB 1W/1m
  • Voice Coil Diameter2"
Thiele-Small Parameters
  • Resonant Frequency (Fs)32 Hz
  • DC Resistance (Re)7.59 ohms
  • Voice Coil Inductance (Le)1.4 mH
  • Mechanical Q (Qms)4.13
  • Electromagnetic Q (Qes)1.82
  • Total Q (Qts)1.26
  • Compliance Equivalent Volume (Vas)3.36 ft.³
  • Maximum Linear Excursion (Xmax)3.5 mm
Materials of Construction
  • Cone MaterialPoly
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter12"
  • Baffle Cutout Diameter11.0625"
  • Depth4.6875"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume2.72 ft.³
  • Sealed F334 Hz
  • Vented Volume31 ft.³
  • Vented F318 Hz
GRS 12PR-8 12" Poly Cone Rubber Surround Woofer
  • BrandGRS
  • Model12PR-8
  • Part Number292-422
  • UPC844632088544
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (37 Reviews)
  • Weight5.55 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.

View similar products to the GRS 12PR-8 12" Poly Cone Rubber Surround Woofer
in the Woofers product category.

Reviews

GRS 12PR-8 12" Poly Cone Rubber Surround Woofer
GRS 12PR-8 12" Poly Cone Rubber Surround Woofer is rated 4.4595 out of 5 by 37.
Rated 5 out of 5 by from good woofersI had gotten these woofers to replace 2 woofers that had gotten blown. I but hem in and that sounded great. they have lots of bass and can really shack you house.
Date published: 2015-06-12
Rated 5 out of 5 by from Great ReplacementThis woofer was an EXCELLENT replacement in our SUNN wedge monitor.It actually ended up being a total "upgrade" over the original, with much better performance and sound, especially for the price.
Date published: 2015-02-22
Rated 4 out of 5 by from seem to be good quality replacements.The bass isn't as I expected but these are still good replacement speakers.
Date published: 2014-10-21
Rated 5 out of 5 by from More than what I expected!I purchased these to replace the woofers in a set of Pioneer CS-G301WAII 3-way bookshelf speakers. These are a serious upgrade to these relatively low-end bookshelf speakers. I couldn't be happier. I'm not sure anything could have been a better replacement at any price for these particular speakers. No modification required at all. Balanced response with plenty of very low frequency bass extension when the music requires it. Highly recommended!
Date published: 2014-10-18
Rated 5 out of 5 by from Just RightPerfectly suited my small venue setup. Almost plug and play. Up and running in less than an hour.
Date published: 2014-10-11
Rated 5 out of 5 by from cant be beat for the priceI asked about putting this in a maxima as infinite baffle, partsexpress said it would work well and would sound similar to the old bose sub, so i figured since these things are super cheep i would get 2, and I think one would have been more than adequate, muuuuch better than the stock bose, really shakes things up. Its not the loudest but it is alot louder than stock even with the amp turned down, and the bass is surprisingly smooth, i expected the highs to be good but the lows really came through nicely. Im just blown away at how great they are for how little i paid. I plan on buying more just to have and eventually finding a use for it
Date published: 2014-08-13
  • 2015-08-31T07:04CST
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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 12PR-8 12" Poly Cone Rubber Surround Woofer

what is the qtc of this driver

Asked by: Mark Bethel
Qtc is actually a box specification and would depend on the cabinet itself. The closest related specification would be the Qts which is 1.26
Answered by: Chrisf
Date published: 2015-08-11

I put in the drivers info into winisd and I got a box volume of 14.ft3 can anyone tell me what is going on. Why is there such a big difference in our calculations?

Asked by: Mark Bethel
Not only are we using a different program, we use numbers that are practical for most applications. These drivers will require huge volumes if you are looking for "ideal" numbers, but will work perfectly fine in much smaller volumes as well.
Answered by: MattP
Date published: 2015-08-12

Diameter is stated as "12 inch nominal". I'm replacing woofers in a 1970's Pioneer system, in which the original woofer is exactly 12 inches in diameter. Is this woofer exactly 12 inches (vs. 12-1/8 or 12-1/4)? Thank you.

Asked by: Dave S
This woofer measures exactly 12" across the frame.
Answered by: MattP
Date published: 2015-07-08

Hi, I have a pair of Carver Silver Amazing Speakers - Open Baffle / Early Series (Not MK IV), Any suggestions for a replacement 12" Driver (3 Each / Speaker) for these from previous experience or Customers ??

Asked by: Erasmuss
We do not have a cross reference available for this type of thing. 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: 2015-06-17

Will these be good replacements woofers for UA 300 Series?

Asked by: Will509
We do not have a cross reference available for this type of thing. 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: 2015-06-08

Are these a suitable drop-in replacement for pioneer cs-g301waII?thanx.

Asked by: jason7639
We do not have a cross reference available for this type of thing. 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: 2015-06-05
  • 2015-08-31T07:43CST
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