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Description
Rockford Fosgate PM212S4XFeatures: 12" Single 4 ohm Punch M2 Marine Subwoofer Power Handling: Peak: 600 watts RMS: 300 watts CEA 2031 Compliant Subwoofer Klippel Verified Subwoofer Meets or exceeds ASTM test standards for Marine Outdoor use 100% UV stable Centrex injection molded plastic parts UV and Salt Fog resistant TPE (Thermo Plastic Elastomer) surround Injection molded mineral filled polypropylene cone body with UV inhibitors 18 gauge corrosion resistant removable
Features:
- 12" Single 4-ohm Punch M2 Marine Subwoofer
- Power Handling:
- Peak: 600 watts
- RMS: 300 watts
- CEA-2031 Compliant Subwoofer
- Klippel Verified Subwoofer
- Meets or exceeds ASTM test standards for Marine/Outdoor use
- 100% UV stable Centrex® injection molded plastic parts
- UV and Salt-Fog resistant TPE (Thermo-Plastic Elastomer) surround
- Injection molded mineral filled polypropylene cone body with UV inhibitors
- 18 gauge corrosion resistant removable Stainless Steel grille cover insert
- Ultra-flexible fully insulated silicone lead wire
- 2.0" 4-layer 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 8 AWG compression speaker terminals
- FlexFit slot mounted frame pattern basket
- Anodized aluminum voice coil former
- Internal magnetic shielding
- User-removable trim ring/grille
- Top-mount depth: 6.60"
- Cutout Diameter: 10.9"
- Frequency Response: 30 - 250 Hz
- Sensitivity: 87.0 dB
- Xmax: 12 mm
- Resonance Frequency (Fs): 25.5 Hz
- Optimum Sealed Enclosure: 1.0 ft² (28.33L)
- Optimum Vented Enclosure: 1.5 ft² (42.50L)
- Also Optimized for Infinite Baffle (Free Air) Applications
Specifications:
- Subwoofer Size: 12"
- Subwoofer Design: Round / Circle
- Main Cone Color: Black
- Voice Coil(s): Single
- Impedance (Per Voice Coil): 4 ohms
- Peak Power Handling: 600 watts
- RMS Power Handling: 300 watts
- Woofer Surround: Thermo-Plastic Elastomer
- Woofer Composition: Mineral-Filled Polypropylene
- Minimum Sealed Box Volume: 0.70 cubic feet
- Maximum Sealed Box Volume: 1.80 cubic feet
- Minimum Ported Box Volume: 1.50 cubic feet
- Maximum Ported Box Volume: 1.50 cubic feet
- Sensitivity: 87 dB
- Xmax (millimeters): 12 mm
- Top-Mount Depth: 6.60"
- Shallow Mount Installation: No
- Cutout Diameter: 10.90"
- Recommended Enclosure Type: Ported / Vented, Sealed
- Subwoofer Grille: Yes - Included
- Re-Cone Kit Available: No
- Amplified or Non-Amplified: Non-Amplified
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
4.6 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Great product will reorder
Size: 180 Count (Pack of 1)
Easy to take a great product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
★★★★★ 5
High quality supplement
Size: 180 Count (Pack of 1)
My doctor recommended a high quality calcium capsule because I am at risk for osteoporosis. The magnesium enhances calcium absorption and helps with my insomnia. I take one capsule daily along with a diet of mostly whole foods. I am 50 years old and have taken this supplement for several years now and my annual lab tests for calcium are always in the desired range.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 23, 2021
★★★★★ 5
Good calcium and magnesium together
Size: 180 Count (Pack of 1)
Size is easy to take
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Works great
Size: 180 Count (Pack of 1)
Excellent
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Truly Pure
Size: 180 Count (Pack of 1)
It’s often difficult to find a supplement that only contains the supplement of interest. So many supplements on the market have other additives. I appreciate that this supplement only has what I’m looking for.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026