POLK

MM-842


8" Single Voice Coil Subwoofer with Ultra Marine Certification

MM1 is the next generation of our highly-acclaimed Mobile Monitor
series—conceived, designed and engineered to deliver premium
audio with thunderous bass, enhanced sonic detail and ultra-durable
construction. It’s the one crafted for full-on powerful sound, no
matter what vehicle you’re in.

The Premium Upgrade
Tuned for the total sonic accuracy you get in a studio subwoofer,
the MM1 Series reconfigures this kind of high-quality deep bass
impact for an on-the-go listening experience that totally outperforms
your OEM factory setup.
Advanced High-Performance Bass
Every element of the MM1 Series is meticulously engineered for
thunderous bass, enhanced sonic detail and ultra-durable
construction—Dynamic Balance technology, a high excursion
bump stack motor structure, glass fiber formers, multilayered
and oversized voice coils, high-temp Conex spiders, a vented
pole and basket structure, and integrated fuses.
Ultra-Marine Certified
Featuring an IP56 rating that includes a non-corrosive fiberglass
reinforced ABS basket, a water-proof surround, weep holes for
proper drainage and a polypropylene cone, you get extra,
long-lasting protection—that’s all salt-fog and UV tested.
Dynamic Balance Technology
Patented process that guides material selection through
rigorous testing that identifies and cancels out unwanted
resonant frequencies.

IP56 rating (water- and dirt-resistant)
Non-corrosive PA66 polyamide nylon basket
Waterproof santoprene surround keeps the elements out—and
combats harsh effects of boat cleaning agents
UV tolerant composite cone
Weep holes for tough marine and outdoor applications
Tested for salt-fog, UV and humidity