Polk Audio MM572 5x7 Marine Coaxial Speaker – Ultra-Marine IP56, 300W Peak

Overview

Meet the Polk Audio MM572, a rugged 5x7-inch 2‑way coaxial speaker designed for both boats and cars. With a titanium-coated woofer cone, a 1-inch Terylene tweeter, and a Santoprene surround, it’s built to withstand tough environments while delivering clear, wide‑range sound that can elevate everyday drives or harbor cruises.

Why it stands out

Durability meets performance. The MM572 carries IP56 Ultra‑Marine certification and uses waterproof surrounds, a corrosion‑resistant fiberglass‑reinforced ABS basket, stainless mounting hardware, and a 4‑ohm impedance. Polk’s Dynamic Balance technology helps minimize distortion and optimize dispersion for a broader listening sweet spot.

• 300W peak power and 100W RMS provide confident output for on‑the‑water vibes or road playlists.
• 35–40 kHz frequency response supports crisp highs and detailed top‑end tones.
• 5x7‑inch titanium‑coated woofer with 6x8 compatibility expands installation options.
• Terylene dome tweeter delivers smooth, clear highs with wide coverage.

Sound in real life

Imagine cruising with bass that feels tight and mids that stay articulate, whether you’re navigating coastal coves or highway routes. The MM572 is designed to deliver a balanced listening experience across seating areas, with minimal distortion at higher volumes when mounted correctly.

• Dynamic Balance tuning uses laser‑assisted material selection for consistent performance.
• Epoxy‑coated crossover and rust‑resistant components help preserve reliability in salty air and humidity.

Easy installation and maintenance

Includes mounting hardware and a grille option to match your vehicle interior or boat cabin aesthetic. Its water‑resistant design and lightweight ABS basket simplify installation and upkeep in marine or automotive environments.

What you might expect

Results vary by vehicle and setup, but many listeners report strong midbass, clear vocals, and a wide listening field with proper mounting. Pair with a compatible head unit or amp to explore additional dynamics.