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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
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Description
Rockford Fosgate RM18D4BGeneral Features: 8" Dual 4 ohm Prime R1 Marine Subwoofer Power Handling: Peak: 300 watts RMS: 150 watts Recommended Power Range: 75 200 watts RMS CEA 2031 Compliant Subwoofer Klippel Verified Subwoofer Meets or exceeds ASTM test standards for Marine Outdoor use 100% UV stable ASA injection molded plastic parts UV and salt fog resistant Santoprene surround Injection molded mineral filled polypropylene cone body with UV inhibitors Removable grille
General Features:
- 8" Dual 4-ohm Prime R1 Marine Subwoofer
- Power Handling:
- Peak: 300 watts
- RMS: 150 watts
- Recommended Power Range: 75 - 200 watts RMS
- CEA-2031 Compliant Subwoofer
- Klippel Verified Subwoofer
- Meets or exceeds ASTM test standards for Marine/Outdoor use
- 100% UV stable ASA injection molded plastic parts
- UV and salt fog resistant Santoprene surround
- Injection molded mineral filled polypropylene cone body with UV inhibitors
- Removable grille cover insert
- Ultra-flexible fully insulated silicone lead wire
- 1.5" aluminum voice coil diameter
- Proprietary corrosion resistant spring loaded push terminals
- Moisture, tear and fatigue resistant Aramid fiber spider
- Linear, high excursion matched motor magnetics and suspension design
- VAST Surround, provides up to a 25% more cone area
- Protected against Dust, UV, Water, Corrosion
- Dual 12 AWG compression speaker terminals
- FlexFit slot mounted frame pattern basket
- Top-mount depth: 3.60"
- Cutout Diameter: 7"
- Frequency Response: 31 - 250 Hz
- Sensitivity: 85 dB
- Xmax: 7 mm
- Resonance Frequency (Fs): 41.5 Hz
- Optimum Sealed Enclosure: 0.55 ft² (15.62)
- Optimum Vented Enclosure: 1.10 ft² (31.15)
- Also Optimized for Infinite Baffle (Free Air) Applications
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
4.2 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Polyglo mit
Exact polyglo applicator mit. Works perfect!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
The Mitt is it.
I ordered the applicator because the Poli Glow Kit on hand was ordered and received a couple of years ago and it had the old chamois covered rectangular applicator. I could tell by looking that the mitt was the better solution. Also, the mitt was described well in an online video, so using it was easy to learn. The results were fantastic and I am very pleased with it.
The only thing I would change is to add some more information on how often to replenish the mitt and with how much Poli Glow liquid. I wasn't sure if I was skimping or wasting the material. As I approached halfway, I couldn't tell if I was going to run out before I finished, so I tried to be as frugal as possible. Turns out, I had liquid left over.
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Reviewed in the United States on September 13, 2016
★★★★★ 5
Work perfect
Work real good
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Reviewed in the United States on June 11, 2026
★★★★★ 5
Didnt need
Great product
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Reviewed in the United States on June 5, 2026
★★★★★ 4
Works much better than the original applicator which left streaks and overlaps
Works much better than the original applicator which left streaks and overlaps. Much easier to use on contours and crevices.
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Reviewed in the United States on October 14, 2014