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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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Description
Massive Audio GTR84 8” GTR Series 600W RMS | 1000W Max Car Subwoofer Dual 4-Ohm w/ GrillMassive Audio GTR84 8 GTR Series Subwoofer 600 W RMS 800 W Peak Dual 4 (2 Hi Temp Voice Coil) Compact yet powerful, the GTR84 delivers bold bass performance in tight spaces. Built with a robust dual 4 voice coil, rugged textured cone, and strontium ferrite magnet, this subwoofer offers clean, reliable low frequency output. Key Features Power Handling (RMS): 600 W (500 W ideal) Peak Power Handling: 800 W 2 dual 4 high temp voice coils (Made in USA)
Massive Audio GTR84 – 8″ GTR Series Subwoofer – 600 W RMS / 800 W Peak – Dual 4 Ω (2″ Hi-Temp Voice Coil)Compact yet powerful, the GTR84 delivers bold bass performance in tight spaces. Built with a robust dual 4 Ω voice coil, rugged textured cone, and strontium ferrite magnet, this subwoofer offers clean, reliable low-frequency output.
Key Features
- Power Handling (RMS): 600 W (500 W ideal)
- Peak Power Handling: 800 W
- 2″ dual 4 Ω high-temp voice coils (Made in USA)
- Heavy-gauge steel basket with industrial texture
- Textured non-pressed pulp cone with resin reinforcement and dual red stitching
- Custom high-roll foam surround with MASSIVE logo
- Terminal case with flexible copper wiring and woven tinsel leads
- X-Max: 12.5 mm; Sensitivity: ~82.5 dB SPL; Fs: ~39.9 Hz
- Recommended sealed enclosure: ~0.5 ft³
- Recommended ported enclosure: 9.6″H × 15″D × 10.8″W (2″ × 8″ port)
- Mounting Depth: ~5.79″; Outer Diameter: ~8.66″; Cutout: ~7.17″; Weight: ~15 lb
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 1584 reviews
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Product Reviews
★★★★★ 5
Works wonders
Size: M (up to size 9)-Beige
Works wonders for dry feet, like really dry, hard feet.
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Reviewed in the United States on February 23, 2026
★★★★★ 4
EXCELLENT FEET MOISTURE PROTECTION
Size: S (up to size 7)-Beige, Size: S (up to size 7)-Beige
Why did you pick this product vs others?:
I have burns on my feet and needed something that I could put burn creme on and still walk around in with. I tried other silicone footsie but they would teae really easily. So far these are doing really well for this purpose. They are holding their shape too. The only caution I have is the same with all silicone footsies: They can be slippery on wet floors, so also wear with socks over them.
The biggest issues is when they say a size they mean it. The silicone used in these have little give in them, so they won't stretch out and loose their shape. That can be a good thing, or not so good, depending on how well they fit your feet and what your intent is with wearing these. The other issue is if they fit snug around those toes, that tends to be where the first tear in the material will happen. Because of how these are made, the tear is actually more like cracking in the material and once it occurs you won't be able to get much use out of the sock after that. If you are planning to wear them around the house or for long term use, I suggest going up a size or look for the toeless options.
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Reviewed in the United States on July 5, 2025
★★★★★ 3
Silicone socks
Size: M (up to size 9)-Beige
The socks are sized large. The quality of the silicone is good. But they slide around on your feet if you try to walk, making them difficult to use and a bit uncomfortable. Unless you are able to sit for long periods of time the likely will not work well. Recommend looking for a better value.
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Reviewed in the United States on October 27, 2024
★★★★★ 5
Effective
Size: L (up to size 11)-Pink
Fantastic. I put lotion on my feet & wear them when I go to sleep. I often wake up during the night and will remove them to find my feet soft and smooth. They are strong and fit my size 10 womens’ size.
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Reviewed in the United States on March 27, 2026
★★★★★ 1
The shoe size should be smaller 9 is the max and it is still to tight
Size: M (up to size 9)-Beige, Size: M (up to size 9)-Beige
Very tight had to take off my feet in the middle of the night they were cutting off my circulation.
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Reviewed in the United States on February 17, 2026