VINTAGE!  Sparkomatic Amplidyne 4030 80 Watt High-Performance Subwoofer Speaker! I have dismantled the unit and cleaned it. All drivers are intact! (Please see photos) Tested and in good working order. Nostalgic performance consistent with a speaker from the 70’s! Sounds great; would sound even better in a proper installation like the rear deck of your favorite vintage car from the 70's! This is a rare item! My father used to sell Sparkomatic back in the 70s. Ships with all items pictured including the all-important instruction manual.