5 out of 5
GRS 12PR-8 12" Poly Cone Rubber Surround Woofer
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Pricing Note
Product Description
Manufacturer Part Number: 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.
Key Features:
Overview:
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.
Specification:
Manuals & Resources:
A GRS 12PR-8 12" 8 ohm polypropylene cone woofer is a good, economical way to repair older speaker systems or create new projects.
Key Features:
- 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
Overview:
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.
Specification:
Product Details | |
|---|---|
| Brand | GRS |
| Model | 12PR-8 |
| Part Number | 292-422 |
| UPC | 844632088544 |
| Unit of Measure | Each |
| Weight | 5.55 |
Product Specifications | |
|---|---|
| Nominal Diameter | 12" |
| Power Handling (RMS) | 100 Watts |
| Power Handling (MAX) | 200 Watts |
| Impedance | 8Ω |
| Frequency Response | 30 to 3,000Hz |
| Sensitivity | 85dB 2.83V/1m |
| Voice Coil Diameter | 2" |
Thiele-Small Parameters | |
|---|---|
| Resonant Frequency (Fs) | 30Hz |
| DC Resistance (Re) | 7.2Ω |
| Voice Coil Inductance (Le) | 1.4mH |
| Mechanical Q (Qms) | 3.18 |
| Electromagnetic Q (Qes) | 1.58 |
| Total Q (Qts) | 1.06 |
| Compliance Equivalent Volume (Vas) | 3.98ft³ |
| Mechanical Compliance of Suspension (Cms) | 0.29mm/N |
| BL Product (BL) | 9.2T·m |
| Diaphragm Mass Inc. Airload (Mms) | 100g |
| Maximum Linear Excursion (Xmax) | 3.5mm |
Materials of Construction | |
|---|---|
| Cone Material | Poly |
| Magnet Material | Ferrite |
Mounting Information | |
|---|---|
| Overall Outside Diameter | 12" |
| Baffle Cutout Diameter | 11.0625" |
| Depth | 4.6875" |
| # Mounting Holes | 8 |
Parts Express Staff Recommended Enclosure Volume | |
|---|---|
| Sealed Volume | 2ft³ |
| Sealed F3 | 36.4Hz |
Manuals & Resources:
Attention CA Residents: Prop 65 Warning
WARNING:
This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.
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Customer Reviews
By Brandon G
Date: March 08, 2025
This speaker is great! I used it to replace and old Crate PA speaker. It brought the PA back to life. Overall this is not a bad deal at all for the price point. I couldn't be happier. I definitely recommend this to anyone who needs to do a replacement for cheap.
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
By TechReview
Date: March 08, 2025
Rocking with the sound, very well made, sounds great....
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Colin C. Calkins
Date: September 22, 2024
This speaker lived for one month. Wasn't abused. Played pretty low. Turned up high once. That's all it took. If you're replacing a speaker and keeping things mild, this might be ok. You get what you pay for.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Boo Boo Kitty
Date: August 31, 2024
I put it in an old JBL PA Subwoofer box and it sounds great as the woofer for my center channel speaker system in my surround setup.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By MatO
Date: June 12, 2024
Great sound quality.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Danny Fickle
Date: April 30, 2024
They Will Really Crank !!
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]