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Manuals & Resources

GRS 6PR-8 6-1/2" Poly Cone Rubber Surround Woofer

Brand:|Model: 6PR-8
GRS 6PR-8 6-1/2" polypropylene cone woofers with butyl rubber surrounds are great replacement speakers, but also provide excellent performance in new projects.
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List Price$18.99
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Part # 292-426
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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 6PR-8 6-1/2" Poly Cone Rubber Surround Woofer

GRS 6PR-8 6-1/2" polypropylene cone woofers with butyl rubber surrounds are great replacement speakers, but also provide excellent performance in new projects.



Product Specifications
  • Nominal Diameter6-1/2"
  • Power Handling (RMS)60 Watts
  • Power Handling (max)85 Watts
  • Impedance8 ohms
  • Frequency Response60 to 8,000 Hz
  • Sensitivity85 dB 1W/1m
  • Voice Coil Diameter1.5"
Thiele-Small Parameters
  • Resonant Frequency (Fs)75 Hz
  • DC Resistance (Re)7.55 ohms
  • Voice Coil Inductance (Le)1.11 mH
  • Mechanical Q (Qms)4.32
  • Electromagnetic Q (Qes)1.34
  • Total Q (Qts)1.02
  • Compliance Equivalent Volume (Vas)0.24 ft.³
  • Maximum Linear Excursion (Xmax)3 mm
Materials of Construction
  • Cone MaterialPoly
  • Surround MaterialRubber
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter6.5"
  • Baffle Cutout Diameter5.625"
  • Depth3.0625"
  • # Mounting Holes4
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.29 ft.³
  • Sealed F378 Hz
  • Vented Volume1.48 ft.³
  • Vented F343 Hz
GRS 6PR-8 6-1/2" Poly Cone Rubber Surround Woofer
  • BrandGRS
  • Model6PR-8
  • Part Number292-426
  • UPC844632088513
  • Product CategoryWoofers
  • Unit of MeasureEA
  • Product Rating
    (53 Reviews)
  • Weight2.85 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.

View similar products to the GRS 6PR-8 6-1/2" Poly Cone Rubber Surround Woofer
in the Woofers product category.

Reviews

GRS 6PR-8 6-1/2" Poly Cone Rubber Surround Woofer
GRS 6PR-8 6-1/2" Poly Cone Rubber Surround Woofer is rated 4.6792 out of 5 by 53.
Rated 5 out of 5 by from OHM CAM 16's are alive again!!I found a pair of Ohm CAM 16's at a yard sale. For $5/pair, I didn't even check the drivers. I just wanted a pair of decent bookshelf speaker for the basement. The 6.5 inch woofer on one had bad rubber, so I looked up the spec's and went looking for a suitable replacement. The GRS 6pr-8 fit the bill on size and, even more, cost. I bought two of the GRS 6pr-8. After a little break in period, I can still tell which side is which (I only replaced one woofer). That is only because the side with the new woofer is slightly brighter than its' 30 year old brother. Now I hate this site because I can't decide if I should just replace the other woofer or BUY BETTER ONES. Arrrgh.
Date published: 2015-08-23
Rated 5 out of 5 by from Can't beat the quality for the price.I did not have a lot of hope for woofers this...let's be honest - cheap. I ordered four of them to rebuild a set of Sony floor speakers that had long since rotted out. They arrived quickly, well packaged and in perfect condition. 10 minutes of swapping speakers around, they're up and running and sound surprisingly tight and clear. They distort at high volume, but it's well beyond comfortable home listening levels. I have to say, A+ for these little woofers, especially at the bargain price of 10 bucks a pop.
Date published: 2015-07-25
Rated 4 out of 5 by from A good value !I bought two of these to replace the woofers in a pair of Baby Advents. They were not a "drop in" replacement, I had to use my Dremmel tool to adjust the cut out...like 5 minutes worth of effort. Other than that pretty easy. Nice tight bass, listening to The Pretenders as I write this and Chrissie Hynde's voice really comes out. A really good speaker for the price and cheaper than re-foaming the originals.
Date published: 2015-05-23
Rated 5 out of 5 by from Good qualityPurchased two of these as a replacement for my Klipsch ProMedia 4.1 system. Although they are not rated for quite as many watts as the originals, the sound quality is near original. I have yet to crank up the volume to really test the power handling capabilities, but satisfied just the same.
Date published: 2015-05-09
Rated 5 out of 5 by from Exactly what I wantedthis woofer works perfectly in my bookshelf speakers. They are the right price, delivered fast, work as intended.
Date published: 2015-04-01
Rated 4 out of 5 by from work well in infinity cresendo seriesNot as much mid from these since its a paper cone but solid bottom end and have held up well to any music i have tossed at them.
Date published: 2015-03-28
  • 2015-08-28T22:22CST
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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 6PR-8 6-1/2" Poly Cone Rubber Surround Woofer

What is the mounting depth?

Asked by: Tsa1980
This has a mounting depth of 3-1/16".
Answered by: MattP
Date published: 2015-06-15

is the GRS 6PR-8 6.5 inch woofer a good choice as a replacement for the woofers found on the Pinnacle PN7+ 2-way ported loudspeaker? My original woofers appear to have poly cones but the rubber surround deteriorated after 15 years.

Asked by: nspfc
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: 2015-02-03

With its poly cone and rubber surround, it has me wondering if it would make a good outdoor speaker, and if so what tweeter would pair well, hmmmm . . .

Asked by: 1gepetto
This would work well as an outdoor speaker. Usually a metal or mylar dome tweeter would be a good choice for outdoor use as well.
Answered by: MattP
Date published: 2015-01-30

Will this work for the klipsch pro media 2.1 driver?

Asked by: NikkoA
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: 2015-01-27

I would like to replace the 2 speakers in my Klipsch promedia subwoofer. I noticed that the GRS speakers have equal width connectors while the Klipsch speakers have a narrow and a wide connector. How are these compatible?

Asked by: rammulay
Chatted with Matt from Parts Express and he explained to me that I can use part no# 095-282‏ (.205" (16-14) Female Disconnect Crimp) to make the 2 connectors compatible. I have placed an order for these speakers. We'll see how it goes.
Answered by: rammulay
Date published: 2014-12-21

I ordered two GRS 6PR-8 6-1/2" Poly Cone Rubber Surround Woofers! I'm gonna put them in some Bazooka tubes. What size amp should I put on them?

Asked by: timmy35
An amplifier that provides 50-60 watts RMS into 8 ohms will be plenty for each woofer.
Answered by: MattP
Date published: 2014-10-20
  • 2015-08-28T22:32CST
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