--- product_id: 12515188 title: "GRS 12PR-8 12\" Poly Cone Rubber Surround Woofer" brand: "grs" price: "Rp2110405" currency: IDR in_stock: true reviews_count: 6 category: "Grs" url: https://www.desertcart.id/products/12515188-grs-12pr-8-12-poly-cone-rubber-surround-woofer store_origin: ID region: Indonesia --- # 12-inch dynamic driver High-energy ceramic ferrite magnet Butyl rubber surround for durability GRS 12PR-8 12" Poly Cone Rubber Surround Woofer **Brand:** grs **Price:** Rp2110405 **Availability:** ✅ In Stock ## Summary > 🎶 Upgrade your sound, own the room — bass that commands attention! ## Quick Answers - **What is this?** GRS 12PR-8 12" Poly Cone Rubber Surround Woofer by grs - **How much does it cost?** Rp2110405 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/12515188-grs-12pr-8-12-poly-cone-rubber-surround-woofer) ## Best For - grs enthusiasts ## Why This Product - Trusted grs brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Robust Stamped Steel Frame:** Keeps all components perfectly aligned, guaranteeing consistent sound quality and easy installation. - • **Optimized High-Energy Motor:** Features a ceramic ferrite magnet and vented pole piece for enhanced magnetic flux and superior bass response. - • **Precision Polypropylene Cone:** Engineered for the perfect balance of stiffness, mass, and self-damping to deliver crisp, distortion-free sound. - • **Durable Butyl Rubber Surround:** Ensures high excursion and long-lasting performance, so your bass stays tight and powerful session after session. - • **Versatile Compatibility & Easy Upgrade:** Fits most 12-inch speaker cabinets with minor adjustments, making it the go-to choice for upgrading vintage or worn-out woofers. ## Overview The GRS 12PR-8 is a 12-inch dynamic woofer featuring a polypropylene cone and butyl rubber surround for durability and sound precision. Its stamped steel frame and high-energy ceramic ferrite magnet motor deliver powerful, distortion-free bass. Ideal for upgrading vintage speaker cabinets, it offers reliable performance and easy installation for home entertainment and surround sound systems. ## Description GRS 12PR-8 12" Poly Cone Rubber Surround Woofer Review: Great replacement speakers for your old school cabinets - Edited - I bought a pair of these to replace the woofers in my old (1996 made) Sony SS-U6033 3 way fronts. The old ones foam had rotted away.... (on the woofers) and since I rarely take the fabric grills off, I only noticed when the sound became distorted. Then whoa, pile of foam! These are great speakers for the price. My installation was a bit more involved - they did not drop right into the old Sony cabinet hole - Those old Sony woofers are actually around 11" , so I had to cut a little of the cabinet hole for this to fit. YMMV. (and that is actually a thing - Sony had some oddball dimensions back then. A little bit of jigsaw work, and I got one done today. Sound is nice, low and mid tones come through where they should - using the little cap crossover that was in the stock cabinet, I'm impressed. My old drivers had the small and standard connector - so I did have to snip one off, and solder on the proper terminal for these. (which is no fault of this manufacturer.... old stuff sometimes is that way.) These are good. One more to do, and I'll crank it up. ------ Edit: Got the other cabinet cut today, and installed the speaker. Real quick run of some test tones on the pair, and some level adjustments on the 4.1 system I have, sounds great. Review: Killer Price, Easy Install and Great Results - I love these woofers! Summary: - Used in Pioneer CS-G303 cabinet (replaced original woofer, but still using original midrange and tweeter) - see photo - A Sony STRDH130 2 Channel Stereo Receiver is being used to drive them I bought these woofers to replace my aging and deteriorating Pioneer ones, which were approaching 30 years old. Not a bad run, but they were showing their age. These GRS (Parts Express) woofers didn't exactly fit in the Pioneer cabinets due to the inner bevel - the cut-out needed to be enlarged about 1/16th of an inch. Once that was set, they fit perfectly. These speakers are used in my garage, so they're purely for casual listening. With that said, I was kind of shocked at just how good they sounded. They have a tighter feel along with a slight bump in the low end compared to the old ones. Using a sample tone album I found on Spotify (search for the album "Audio Test Tones") I was able to get a great response down to 40Hz, but once I got below that it drops off quickly. 30Hz barely registered. Your mileage may vary depending on the enclosure you install these in and the amp you use. I use these speakers only for music, so this is more than good enough. I've listened to these for about 10 hours and they had no issue playing loud for long periods (3 or 4 straight hours). Spending a little money on these woofers I'm hopeful I've extended the lifespan of these old Pioneer speakers for many more years to come. Highly recommended! ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00454YEWW | | Audio Driver Size | 12 Inches | | Audio Driver Type | Dynamic Driver | | Best Sellers Rank | #62,923 in Electronics ( See Top 100 in Electronics ) #229 in Car Component Subwoofers | | Compatible Devices | Desktop, Laptop, Television | | Control Method | Touch | | Customer Reviews | 4.3 4.3 out of 5 stars (335) | | Date First Available | September 29, 2010 | | Is Waterproof | FALSE | | Item Weight | 5 pounds | | Item model number | 12PR-8 | | Manufacturer | GRS | | Material | Polypropylene, Butyl Rubber | | Model Name | 12PR-8 | | Number of Items | 1 | | Power Source | Corded Electric | | Product Dimensions | 12 x 12 x 12 inches | | Recommended Uses For Product | For Music Players, For Surround Sound Systems, For Gaming Consoles, For DVD Players | | Shape | circular | | Speaker Size | 12 Inches | | Speaker Type | Woofer | | Special Feature | Bluetooth | | Specific Uses For Product | Home Entertainment Systems | | Subwoofer Connectivity Technology | Wireless | | Subwoofer Diameter | 12 Inches | | Surround Sound Channel Configuration | 2.1 | | UPC | 844632088544 | | Warranty Type | Limited | | Wireless Communication Technology | Bluetooth | | Woofer Diameter | 12 Inches | ## Product Details - **Audio Output Mode:** Stereo - **Brand:** GRS - **Connectivity Technology:** Bluetooth - **Mounting Type:** Flush Mount - **Speaker Maximum Output Power:** 600 Watts ## Images ![GRS 12PR-8 12" Poly Cone Rubber Surround Woofer - Image 1](https://m.media-amazon.com/images/I/61PNkGRWSNL.jpg) ## Questions & Answers **Q: How deep is the speaker? from the front to the end of the magnet.** A: Overall Outside Diameter - 12"Baffle Cutout Diameter - 11.0625"Depth - 4.6875"# Mounting Holes - 8 **Q: Will this work okay with just a 30Watt amp?** A: I have it hooked up to a 50watt receiver and I haven't had any crackling or distortion and I get really loud when I'm listening to loud, heavy bass movies or music. Haven't had any over heating problems either during heavy use. Overall it does a great job in my living room. I wouldn't go trying to power a concert hall or an outside event. This is strictly close quarters, home situation, small back yard stuff. **Q: Does anyone know if/think that this would be a good replacement for a blown 12-inch subwoofer (8 ohm 12w3) from a cerwin vega ls-12 3-way home setup?** A: I have 3-way jenson 12s and i used them for a replacement and i think they sound great!! I power them with a 550w optimus stereo **Q: My infinity's have a cardboard gasket between the 12pr-8 and the cabinet. I assume for dampening. Any way to get one for this speaker?** A: Amazon,…. Type in 12” Speaker gasket in the search on Amazon . ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great replacement speakers for your old school cabinets *by H***N on May 3, 2025* Edited - I bought a pair of these to replace the woofers in my old (1996 made) Sony SS-U6033 3 way fronts. The old ones foam had rotted away.... (on the woofers) and since I rarely take the fabric grills off, I only noticed when the sound became distorted. Then whoa, pile of foam! These are great speakers for the price. My installation was a bit more involved - they did not drop right into the old Sony cabinet hole - Those old Sony woofers are actually around 11" , so I had to cut a little of the cabinet hole for this to fit. YMMV. (and that is actually a thing - Sony had some oddball dimensions back then. A little bit of jigsaw work, and I got one done today. Sound is nice, low and mid tones come through where they should - using the little cap crossover that was in the stock cabinet, I'm impressed. My old drivers had the small and standard connector - so I did have to snip one off, and solder on the proper terminal for these. (which is no fault of this manufacturer.... old stuff sometimes is that way.) These are good. One more to do, and I'll crank it up. ------ Edit: Got the other cabinet cut today, and installed the speaker. Real quick run of some test tones on the pair, and some level adjustments on the 4.1 system I have, sounds great. ### ⭐⭐⭐⭐⭐ Killer Price, Easy Install and Great Results *by T***I on October 27, 2021* I love these woofers! Summary: - Used in Pioneer CS-G303 cabinet (replaced original woofer, but still using original midrange and tweeter) - see photo - A Sony STRDH130 2 Channel Stereo Receiver is being used to drive them I bought these woofers to replace my aging and deteriorating Pioneer ones, which were approaching 30 years old. Not a bad run, but they were showing their age. These GRS (Parts Express) woofers didn't exactly fit in the Pioneer cabinets due to the inner bevel - the cut-out needed to be enlarged about 1/16th of an inch. Once that was set, they fit perfectly. These speakers are used in my garage, so they're purely for casual listening. With that said, I was kind of shocked at just how good they sounded. They have a tighter feel along with a slight bump in the low end compared to the old ones. Using a sample tone album I found on Spotify (search for the album "Audio Test Tones") I was able to get a great response down to 40Hz, but once I got below that it drops off quickly. 30Hz barely registered. Your mileage may vary depending on the enclosure you install these in and the amp you use. I use these speakers only for music, so this is more than good enough. I've listened to these for about 10 hours and they had no issue playing loud for long periods (3 or 4 straight hours). Spending a little money on these woofers I'm hopeful I've extended the lifespan of these old Pioneer speakers for many more years to come. Highly recommended! ### ⭐⭐⭐⭐⭐ Great sound and value *by B***. on June 18, 2025* I bought these to replace the completely blown out woofers in my 1978 Cerwin Vega cabinet speakers from college. They dropped right in and ready to go in 10 minutes. Put the bassiest CD on and what a pleasant surprise! No more rattle! Great value and fast shipping. ## Frequently Bought Together - GRS 12PR-8 12" Poly Cone Rubber Surround Woofer - GRS 10PR-8 10" Poly Cone Rubber Surround Woofer --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.id/products/12515188-grs-12pr-8-12-poly-cone-rubber-surround-woofer](https://www.desertcart.id/products/12515188-grs-12pr-8-12-poly-cone-rubber-surround-woofer) --- *Product available on Desertcart Indonesia* *Store origin: ID* *Last updated: 2026-05-13*