Polk's Ultramarine speakers are designed to deliver maximum sound in marine applications. Their design features "air suspension" technology and high-temperature voice coils, providing up to 250 watts.

These 8.8-inch speakers feature durable, removable sport grilles that withstand sunlight and moisture.

The Polk UMS88S speaker uses air suspension technology to deliver 200 watts of power in a sleek, waterproof, and corrosion-resistant package, ideal for water-based installations.

• Anthracite enclosure and grille
• Air suspension design
• Aluminum chassis
• High-temperature voice coil
• Snap On Grille installation option
• Silver cone
• Tinsel Leads wire insulation
• Sensitivity: 89.4dB
• Frequency response: 50 Hz – 20KHz
• Nominal impedance: 4 Ohms
• Maximum power 250 watts
• Mounting depth: 30.31 cm
• Magnet weight: 1142.5 gr