Memphis Audio MM603 6.5" MM Series Marine A.T.A.C. Speakers

The Memphis Audio MM603 is a 6.5" marine-grade speaker built around Memphis Audio's proprietary A.T.A.C.™ (Array Tweeter Acoustic Concept) technology. Engineered specifically for the marine environment, these speakers are designed to deliver powerful, clear sound while standing up to the moisture, UV exposure, and vibration of on-water use.

Memphis Audio's A.T.A.C. design replaces the traditional center-mounted compression horn with a bridged tweeter array. This approach frees up significant surface area on the woofer cone, reduces weight at the cone's center, and results in a measurable boost in SPL and a more balanced frequency response. The array's curved layout also broadens the dispersion angle, ensuring consistent sound quality from multiple listening positions.

Key Features:

• A.T.A.C.™ Tweeter Array — bridged tweeter array design for improved output and frequency response over conventional compression horn designs
• Marine-Grade Construction — built to withstand water, UV rays, salt air, and the demands of powersports and marine environments
• 6.5" Woofer — full-range marine coaxial speaker configuration
• MM Series Platform — part of Memphis Audio's dedicated marine audio MM product family, designed and developed in the United States
• Enhanced Dispersion — curved tweeter array broadens the listening angle for better sound coverage on the water

The MM603 is a strong upgrade option for boat owners, PWC riders, and powersports enthusiasts looking to replace factory speakers with a purpose-built marine audio solution backed by Memphis Audio's reputation for performance and durability.