
Alpine Marine products combine superb performance and maximum power efficiency, and are outstandingly robust and uncompromisingly suitable for marine use. Rigorous UV-light, salt-water and water intrusion protection is applied to the units ensuring a durable, long-lasting marine system. Alpine Marine products meet the ASTM guidelines for salt fog testing as well as ASTM UV-weathering testing. Speakers, subwoofers and controls units also meet the NEMA water and dust intrusion ratings on a high level, all electronics are water-repellent coated.
All Alpine Marine Speakers, Subwoofer and Remote Control solutions are IP (Intrusion Protection) rated by the US-American Electronics Manufacturer Association (NEMA) in the category water-rigidity. Two numerals added to the acronym “IP” inform about the protection level of a device. The first numeral is the IP code indicating the degree of protection from solid foreign objects. The second numeral is the IP code indicating the degree of protection from moisture intrusion.
Testing The NEMA IPx5 water intrusion test requires a product to remain watertight for three minutes after enduring water spray from a 1/4” diameter nozzle or powerful jets of 12.5 liters water per minute from a distance of 3 meters. The test parameters for IPx6 rating require a product to remain watertight for three minutes after enduring water spray from a 1/2” diameter nozzle or powerful jets of 100 liters water per minute from a distance of 3 meters.
(As an indication: A typical garden hose flows about 30 liters per minute)
All Alpine Marine SPR/SPS Speakers as well as the SWR Subwoofer are NEMA-rated on level IPx5 which means they safely resist the intrusion of jetting water.
MC-10/MC-1 Commander is 100% water proof and the MC-1 Wireless Controller's water resistance is NEMA-rated IPx6 which means it even withstands powerful jetting water.
Alpine's Marine Head units and the Amplifiers mainly used inboard are only coated with a water repellent Marine Coating System but conform to the ATSM salt fog and UV Marine specifications.