11. Rick Perrotta went on to found " Royer Labs ", a company that manufactures ribbon microphones . 12. The R-121 Ribbon microphone contained two innovations that delivered the performance levels necessary for professional studio use. 13. Ribbon microphones are similar to moving coil microphones in the sense that both produce sound by means of magnetic induction.14. Ribbon microphones are typically bidirectional, meaning that they pick up sounds equally well from either side of the microphone.15. David Royer designed his first ribbon microphone in 1997 and started the company that bears his name one year later. 16. There is a common belief that connecting a dynamic or ribbon microphone to a phantom-powered input will damage it. 17. Due to their bidirectional pick-up pattern, ribbon microphones are often used in pairs to produce the Blumlein Pair recording array. 18. In addition to the usual choices, Kramer used Beyer M1 60 ribbon microphones , which were typically not used to record loud music. 19. If the ribbon microphone is improperly wired, which is not unheard of with older microphones, this capacity can damage some ribbon elements; 20. In the late 1920s, Dr . Harry F . Olson of RCA began development of the ribbon microphone , eventually using permanent magnets.
