The 600B Altec Lansing Corporation Vintage Model 600 B Speaker Driver is a sought-after vintage audio part that is 8 Ohms in impedance. This driver, made by Altec Lansing Corporation, is known for its high-quality construction and performance. Perfect for restoring or repairing vintage audio equipment, this speaker driver is a rare find for audio enthusiasts looking to maintain the authentic sound of classic audio systems. This is being sold as is for parts. The basket and magnet are in almost perfect condition, especially for a speaker that is 75 years old. Needs reconed to be enjoyed again. Wish I had the time myself. Great find for anyone looking to build an A.L. system.