Polk Audio UMS108B Ultramarine 10.8" Marine Subwoofer with RGB LED Lighting Black

The Polk Audio UMS108B Ultramarine is a premium 10.8-inch marine subwoofer engineered to deliver powerful, deep bass in the harshest marine environments. Built to withstand the challenges of life on the water, this subwoofer combines robust construction with impressive audio performance and eye-catching RGB LED lighting.

Marine-Grade Construction:

• Mica-reinforced polypropylene cone for durability and performance
• Cast aluminum basket provides structural rigidity and corrosion resistance
• ASTM B117 salt fog and ASTM D4329 UV exposure tested to meet marine industry standards
• Waterproof and UV/corrosion resistant design for long-lasting reliability

Power and Performance:

• 350 watts RMS / 700 watts maximum power handling
• 4-ohm impedance for efficient power delivery
• Air-suspension design allows installation in any panel without requiring an enclosure
• Delivers clean, hard-hitting bass even under challenging marine conditions

RGB LED Lighting:

• Multi-color LEDs mounted in the fixed spoke-style grille create a stunning glow on the woofer cone
• Compatible with XKGlow Bluetooth controller and XKChrome smartphone app for custom lighting displays
• Can be wired directly to 12-volt power supply for manual control
• Multiple color options including red, green, blue, yellow, pink, aqua, and white

Installation Specifications:

• Cutout diameter: 8.8 inches
• Mounting depth: 5.71 inches
• Includes grille, snap-on trim rings, grille covers, mounting hardware, and installation manual

The UMS108B in black finish combines Polk Audio's decades of speaker engineering expertise with purpose-built marine features, making it the ideal choice for boaters who demand exceptional sound quality without compromising on durability.