Profile: Minneapolis Speaker Co., Inc. specializes in providing a range of loudspeaker types & sizes for all application. Our products include tweeters, mid ranges, woofers, sub woofers & full-range speakers, plus crossovers, ports and passive radiators. Our aerospace products include cockpit and passenger cabin speakers. The EN4FR-1000A is a speaker used in planes. It is light weight, 4 inch speaker with an aluminum basket and high energy neodymium magnet. Its circuit board design allows the speaker to be used in a 70 volt system without the need for a heavy transformer. Our loudspeakers provide intelligibility during voice communications via paging or through microphones. The brands we offer include Misco™ and Redline™.