what is the outer diameter of the outer most edge of this woofer? please be exact. I'm designing a box.

I know some 6.5" speakers are not 6.5", but these are. Replaced the woofers in my Dayton B652's (which are 6.5" outside diameter) and they went right in.

Could I use this as a car subwoofer if I put it in a box?

This will give you better bass than most car 6.5's, but it's a replacement woofer for bpokshelf speakers mainly, but home stereo component 6.5's definitely perform better than car ones, some are even 4ohm.

For those who purchased the speaker as a replacement sub for the Klipsch Promedia, how is the fit and does the amp power the sub as well as the OEM?

They fit perfect except the grill covers do not "push" back into place. Also you have to change the leads on the wiring because the connectors on these speakers are smaller. Really easy to do and they sound great. And yes the amp powers the sub and the OEM.. Super cheap fix, highly recommend.

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

Product ID: 3906362

Details

Audio Output Mode
Surround
Brand
GRS
Connectivity Technology
3.5mm or RCA
Mounting Type
Flush Mount
Speaker Maximum Output Power
100 Watts

🔊6.5" dynamic woofer size

⚙️High-energy ceramic ferrite magnet

🛡️Butyl rubber surround for durability

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NZ$108

Duties & taxes included

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Description

🎶 Elevate your bass game — don’t just hear it, feel it!

SEAMLESS COMPATIBILITY - Plug-and-play with RCA and 3.5mm aux inputs, ideal for upgrading car or desktop audio systems effortlessly.
ROBUST STAMPED STEEL FRAME - Keeps all components perfectly aligned for consistent, reliable audio output.
OPTIMIZED HIGH ENERGY MOTOR - Features a ceramic ferrite magnet and vented pole piece for powerful, deep bass that fills your space.
PRECISION POLYPROPYLENE CONE - Engineered for the perfect balance of stiffness and self-damping, delivering crisp, distortion-free bass.
DURABLE BUTYL RUBBER SURROUND - Ensures high excursion and long-lasting performance, so your sound stays flawless over time.

The GRS 6PR-8 is a 6.5-inch polypropylene cone woofer with a butyl rubber surround and a stamped steel frame, designed for high excursion and durability. Featuring a high-energy ceramic ferrite magnet and vented pole piece, it delivers powerful, clean bass. Compatible with RCA and 3.5mm aux inputs, it’s a perfect upgrade for car and desktop audio systems seeking rich, resonant low frequencies.

Specifications

ASIN	B0045506LE
Antenna Location	Car audio systems
Audio Driver Size	6.5 Inches
Audio Driver Type	Dynamic Driver
Audio Output Mode	Surround
Best Sellers Rank	#30,653 in Musical Instruments ( See Top 100 in Musical Instruments ) #109 in Monitor, Speaker & Subwoofer Parts #9,858 in Music Recording Equipment
Brand	GRS
Built-In Media	1 x Speaker
Color	Black
Compatible Devices	Smartphone, Tablet, MP3 Player, Desktop, Laptop
Compatible with Vehicle Type	Car
Connectivity Protocol	RCA, aux
Connectivity Technology	3.5mm auxiliary or RCA
Control Method	Touch
Customer Reviews	4.3 4.3 out of 5 stars (461)
Enclosure Material	polypropylene, butyl rubber, stamped steel
Is Waterproof	FALSE
Item Weight	2.9 Pounds
MP3 player	No
Manufacturer	GRS
Model Name	6PR-8
Model Number	6PR 8
Mounting Type	Flush Mount
Number of Audio Channels	2.0
Number of Items	1
Power Source	Corded Electric
Series Number	8
Speaker Maximum Output Power	100 Watts
Speaker Size	6.5 Inches
Speaker Type	Woofer
Specific Uses For Product	In-car audio systems
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	6.5 Inches
UPC	844632088513
Unit Count	1 Count
Warranty Type	Limited
Woofer Diameter	6.5 Inches

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NZ$108

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Imran F.

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