Rudy Bozak Loudspeakers 1963-1979

The speaker that most interest me is the famous Big Bertha or Thumper. This was built for the auto industry to test for noise and rattles in the car. Allegedly this is the first case of the brown tone. You can read about that in the link below.


For some insight into Bozak you can read about the company here. http://www.bobsamerica.com/bozak.html

Here is some insight from Roger Russell himself. http://www.roger-russell.com/columns/columns.htm#bozak