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Description
Polk Audio MM 842DVC 8" 300W RMS MM1 Series Dual 4-Ohm SubwooferPolk Audio MM842 DVC 8 Dual 4 Ultra Marine Subwoofer 300 W RMS 900 W Peak Polks MM842 DVC is an 8 dual 4 ohm subwoofer designed for marine and automotive use. Rated at 300 W RMS 900 W Peak, it combines titanium plated composite cones, Santoprene surrounds, and IP56 certification for durability in harsh conditions. Dual 4 ohm voice coils provide flexible wiring for compact yet powerful bass installs. Key Features Single unit Power Handling (RMS): 300 W
Polk Audio MM842 DVC – 8″ Dual 4 Ω Ultra-Marine Subwoofer – 300 W RMS / 900 W PeakPolk’s MM842 DVC is an 8″ dual 4-ohm subwoofer designed for marine and automotive use. Rated at 300 W RMS / 900 W Peak, it combines titanium-plated composite cones, Santoprene surrounds, and IP56 certification for durability in harsh conditions. Dual 4-ohm voice coils provide flexible wiring for compact yet powerful bass installs.
Key Features
- Single unit
- Power Handling (RMS): 300 W
- Power Handling (Peak): 900 W
- Impedance: Dual 4 Ω voice coils (DVC)
- Sensitivity: 84 dB @ 1 W / 1 m
- Frequency Response: 30 – 200 Hz
- Top Mount Depth: ~4.76″
- Cutout Diameter: ~7.2″
- Titanium-plated composite cone with Santoprene surround
- Fiberglass-reinforced ABS basket with drainage weep holes
- Ultra-Marine Certified (IP56): waterproof surrounds, UV & salt-fog tested
- Recommended sealed box: 0.35 – 0.85 cu ft; ported box: 0.35 – 0.85 cu ft
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
4.7 ★★★★★
Based on 20 reviews
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Product Reviews
★★★★★ 5
Good for the price
Color: Black, Color: Black
Very cute, well made, it is plastic but it’s durable. Better than the higher priced item I was considering.
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Reviewed in the United States on November 5, 2025
★★★★★ 2
Check the measurements
Color: Black
Looked cool but it was the wrong size. It was too big.
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Useful
Color: Black
It works for a key holder, but if the keys are heavy, you may have a problem.
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Novelty quality plastic, gorgeous color, and sturdy
Color: Purple
I was a little surprised when I took it out of the pkg. It seemed flimsy. It holds whatever I put in any position, perfectly balanced.
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Reviewed in the United States on January 12, 2026
★★★★★ 4
Plastic key holder
Color: Black
A little light as it is plastic, but it does the job
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Reviewed in the United States on March 16, 2026