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Polk Audio MM842SVC MM1 Series 8″ 900W 4-ohm Single Voice Coil Subwoofer with Ultra-Marine Certification

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$229.00 $214.00

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Polk Audio MM1 Series 8″ 900W 4-ohm Single Voice Coil Subwoofer with Ultra-Marine Certification: Polk MM1 Series – Crafted for Full-On Powerful Sound, No Matter What Vehicle Their Mounted In


Polk Audio MM842SVC Features:

  • Premium upgrade tuned for the total sonic accuracy found in a studio subwoofer
  • Marine certified with IP65 rating (water- and dirt-resistant) and tested for salt-fog, UV and humidity
  • Meticulously conceived, designed and engineered for advanced high performance bass
  • Dynamic Balance technology provides rich, clean, full-range sound by eliminating distortion and unwanted resonant frequencies
  • High excursion bump stack motor structure provides more audible throw
  • Titanium-plated composite cone
  • Butyl rubber surround
  • Fiberglass-reinforced ABS basket
  • Peak Power – 900W (300W RMS)
  • Single Voice Coil 4-ohm

Advanced High-Performance Sound

Every element of the MM1 Series is meticulously engineered for high-performance sound—Dynamic Balance technology, a 1” Terylene tweeter, UV tolerant titanium plated composite cones, lightweight neodymium motor structure—plus, glass fiber formers, oversized voice coils and high-temp Conex spiders for increased power handling.

Dynamic Balance Technology

Enjoy a rich, clean, full-range sound with our patented Dynamic Balance technology engineered into every MM1 speaker. Rigorously tested and developed by our talented Polk Audio engineers, whose passion rests in the principles of great sound, Dynamic Balance technology features non-resonant materials so you get extremely clear highs, mids and lows no matter what you’re listening to.

Neodymium Motor Structure

Compact lightweight neodymium motor structure provides more output with less power and overall higher efficiency—plus easier drop-in installation.

Glass Fiber Formers, Oversized Voice Coils and High Temperature Conex Spiders

All three combine to create a high efficiency driver, for elevated sound, increased power handling, better linearity, lower distortion and greater durability.

Non-corrosive Fiberglass Reinforced Baskets

Offers heavy-duty protection for back half of the speaker, which helps prevent corrosion and general wear and tear.

Integrated Epoxy Coated Crossovers

With its second order high/low pass system, you’re ensured the right frequencies reach the right speakers in your setup for optimal system blending regardless of the vehicle you’re in or the elements you encounter.

Polk Audio MM842SVC Specs

Weight 3.63 kg
Model Name

MM1 Series 8" 900W 4-ohm Single Voice Coil Subwoofer with Ultra-Marine Certification




Polk Audio

Total Pieces


Drivers Warranty

1 years

Original Purchaser Only


Qty Included


Driver Enclosure Type

Ultra-Marine Certified

Driver Complement

• (1) 8" (20.32 cm) d (Round) – Subwoofer




7.28" (18.49 cm)

Full-Range Mounting Depth - Top Mount

4.13" (10.49 cm)

Full-Range Mounting Depth - Bottom Mount

4.69" (11.91 cm)

Total Frequency Response

30 Hz → 200 Hz

Nominal Impedance

4 ohms

Sensitivity (1 watt @ 1 meter)

85 dB

Continuous Power Handling


Peak Power Handling


Polk Audio in Australia: Innovating Car Audio Experiences

Polk Audio is an established name in the world of sound technology, known for its commitment to innovation, sound quality, and durability. The brand has made significant inroads into the Australian market, becoming a popular choice among audio enthusiasts, especially in the car audio segment.

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