GRS 8PR-8 8" Polycone Rubber Surround Woofer

GRS 8PR-8 8" Polycone Rubber Surround Woofer

Q: If I'm planning to wire this with a tweeter, do I need to buy a crossover?

The crossover would really be for the tweeter. It protects the tweeter from low frequencies. The woofer doesn't need a crossover.

Q: Are they made with plastic or paper material? And do they distort at high volumes?

They are a silicon type material and they seem to hold up at higher volumes. Keep in mind that these are low cost speakers, they may not hold up in a high performance sound system. They are definitely an improvement over stock speakers in an old Sony cabinet.

Q: What is the mounting bolt circle diameter? Or what is the distance between the mounting holes (either diagonally or on one side)?

These replaced my woofers in my Advent II speakers from the 1990s. They sound great. Diagonally is 7.75". Side to side (and up down) is 5.5". Ned Chatt Jr.

Product ID: 754564033

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Details

Brand
GRS
Speaker Maximum Output Power
600 Watts
Audio Output Mode
Surround
Mounting Type
Flush Mount
Material
Polypropylene

🔊8-inch precision polycone

⚙️high-energy ceramic magnet

🛡️durable butyl rubber surround

Frequently Bought Together

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

Pyle 5 Inch Woofer Driver-Upgraded 200 Watt Peak High Performance Mid-Bass Mid-Range Car Speaker 450Hz-7kHz Frequency Response 15 Oz Magnet Structure 8 Ohm w/ 92dB and Paper Coating Cone-PDMR5 Black

Description

🎶 Elevate your sound game with bass that commands attention!

SEALED BOX READY - Designed for seamless integration in sealed speaker enclosures for tight bass response.
ROCK SOLID STABILITY - Stamped steel frame maintains perfect alignment under heavy use.
POWERFUL MAGNETIC DRIVE - Optimized motor with ceramic ferrite magnet delivers punchy, consistent output.
CRYSTAL CLEAR BASS PRECISION - Polypropylene cone balances hardness and mass for rich, distortion-free lows.
BUILT TO LAST BUILT TO PERFORM - Butyl rubber surround ensures high excursion capacity and long-term durability.

The GRS 8PR-8 is an 8-inch polycone woofer engineered for superior bass clarity and durability. Featuring a polypropylene cone for optimal sound balance, a butyl rubber surround for extended excursion and longevity, and a stamped steel frame for structural integrity, it delivers 65 watts of powerful output. Ideal for sealed box speaker systems, this woofer is a must-have for audiophiles seeking precise, punchy low frequencies.

Specifications

Model Name	8PR 8
Speaker Type	Woofer
Recommended Uses For Product	For Speaker Systems
Subwoofer Diameter	8 Inches
Item Weight	1.36 kg
Is Waterproof	False
Number of Items	1
Control Method	App
Wireless Communication Technology	Bluetooth
Speaker Size	8 Inches
Power Source	Corded Electric
Batteries Required	No
Manufacturer	GRS
Item Model Number	4333165296
Output Wattage	65 Watts
Product Dimensions	22 x 21.31 x 11.2 cm; 1.36 kg

Have a Question? See What Others Asked

If I'm planning to wire this with a tweeter, do I need to buy a crossover?

Are they made with plastic or paper material? And do they distort at high volumes?

What would you recommend as the high pass cross-over point on these speakers? i.e. frequencies below this point should go to a dedicated sub-woofer?

What is the mounting bolt circle diameter? Or what is the distance between the mounting holes (either diagonally or on one side)?

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