5 out of 5
GRS 8PR-8 8" Poly Cone Rubber Surround Woofer
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Product Description
Manufacturer Part Number: 8PR-8
The GRS 8PR-8 8" woofer features a polypropylene cone and a rubber surround. It performs admirably in sealed-box speaker applications.
Key Features:
GRS 8PR-8 8" Poly Cone Rubber Surround Woofer
The GRS 8PR-8 8" woofer features a polypropylene cone and a rubber surround to produce smooth response with outstanding damping. Thanks to its carefully optimized parameters, this driver is ideal for use in sealed-box speaker applications giving it a high degree of compatibility when used as a replacement speaker-it provides excellent performance in new designs, as well.
The GRS 8PR-8 8" woofer features a polypropylene cone and a rubber surround. It performs admirably in sealed-box speaker applications.
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
GRS 8PR-8 8" Poly Cone Rubber Surround Woofer
The GRS 8PR-8 8" woofer features a polypropylene cone and a rubber surround to produce smooth response with outstanding damping. Thanks to its carefully optimized parameters, this driver is ideal for use in sealed-box speaker applications giving it a high degree of compatibility when used as a replacement speaker-it provides excellent performance in new designs, as well.
Product Details | |
|---|---|
| Brand | GRS |
| Model | 8PR-8 |
| Part Number | 292-428 |
| UPC | 844632088520 |
| Unit of Measure | Each |
| Weight | 3 |
Product Specifications | |
|---|---|
| Nominal Diameter | 8" |
| Power Handling (RMS) | 65 Watts |
| Power Handling (MAX) | 90 Watts |
| Impedance | 8Ω |
| Frequency Response | 40 to 5,000Hz |
| Sensitivity | 85dB 2.83V/1m |
| Voice Coil Diameter | 1.5" |
Thiele-Small Parameters | |
|---|---|
| Resonant Frequency (Fs) | 52Hz |
| DC Resistance (Re) | 7.58Ω |
| Voice Coil Inductance (Le) | 1.09mH |
| Mechanical Q (Qms) | 4.77 |
| Electromagnetic Q (Qes) | 1.45 |
| Total Q (Qts) | 1.11 |
| Compliance Equivalent Volume (Vas) | 0.76ft³ |
| Maximum Linear Excursion (Xmax) | 3mm |
Materials of Construction | |
|---|---|
| Cone Material | Poly |
| Surround Material | Rubber |
| Magnet Material | Ferrite |
Mounting Information | |
|---|---|
| Overall Outside Diameter | 8" |
| Baffle Cutout Diameter | 7.32" |
| Depth | 3.44" |
| # Mounting Holes | 4 |
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion) | |
|---|---|
| Sealed Volume | 0.81ft³ |
| Sealed F3 | 54Hz |
| Vented Volume | 5.54ft³ |
| Vented F3 | 29Hz |
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 Mary
Date: October 06, 2023
Me agrado q mi esposo esta muy contento llego rpido gracias
Rating: 
[5 of 5 Stars!]
[5 of 5 Stars!]
By TH
Date: June 25, 2023
This 3 speaker performance is great when powered, wired mounted in correct encloser. Ordered a second.
Rating: 
[4 of 5 Stars!]
[4 of 5 Stars!]
By BOlson
Date: February 16, 2023
I'm using the speakers in my R2 D2 build. They are very sturdy and very loud. I would highly recommend.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By A Customer
Date: February 14, 2023
Like others of said, I'm not sure the speakers are full range. They are loud and sound good, however, the speakers that I was replacing were much more crisp and hit the high frequencies better. However, these speakers are very well-built, with a heavy magnet and a high quality cone. Two of these and a tweeter sounds great for small applications.
Rating: [4 of 5 Stars!]
[4 of 5 Stars!]
By by Kathleen (Your signature)
Date: November 17, 2022
Sounds better than before. Sound profile hits nice for full range. Would recommend. Easy swap.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]
By Mike
Date: October 04, 2022
I have a Boss sound bar . I blew three speakers over the last two years . These work great as replacements . Little soldering knowledge is needed.
Rating: [5 of 5 Stars!]
[5 of 5 Stars!]