Prophet 5 Under the Hood w/ Rob Rosen-Clip

We move on to the Prophet 5 which is the first fully programable synthesizer created by Dave Smith by instituting the Z80 chip. Rob Rosen from Rosen Sound gives us a close look at his REV 1 instrument signed by Dave Smith (that was most likely made in his garage). Dave Smith was the first to create a micro controller based instrument that essentially replaced a lot of the complexity in the CS-80. We’ll see the innovative part of the Prophet 5 where the software lives and learn how it controls and interfaces with the sound producing components such as keyboard scanning, voice assigning and sound parameters. We’ll see an early DAC that converts digital into analog and discover temperature compensating resistors. Ribbon cables replace much of the miles of wiring in the CS-80.  We isolate on the Oscillator envelope chips and Rob compares the sound of the REV 1, REV 2 and REV 3 versions. We view the keyboard mechanism with J-wires, a bus bar, and how voices are assigned via a myriad of computerized decision making options.  Rob and I agree that by understanding the way things work on the inside, it can affect the way we play the instrument.

00:00 Prophet 5 History
01:00 Introduction to Prophet 5 Rev 1
02:43 Dave Smith Innovations
03:36 Inside the Prophet 5
08:52 Rev1 vs Rev2 vs Rev3
09:50 Z80 Microprocessor and signal path
12:11 The Keyboard and Computer Calculations
15:23 Why understand how it works?
17:10 From Analog to AI

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Anthony's musical touch as both composer and performer is connected with some of the most influential creative minds over the last 40 years. He’s composed and conducted original orchestral scores for over 80 feature films including Young Guns, Internal Affairs, The Man From Elysian Fields, 15 Minutes and Planes, Trains & Automobiles, been commissioned by the Los Angeles Philharmonic for his symphonic work "In the Family Way", written over one thousand TV commercials in a myriad of musical styles, co-founded Levels Audio Post (LA's premiere post production facility) and performed and arranged on big-box-office films and influential hit records such as Michael Jackson's Thriller.

His extensive work as a young arranger, orchestrator and performer for Quincy Jones, Jack Nitzsche, Lamont Dozier, Arthur Rubenstein and Giorgio Moroder was vital in launching his own career. His early years pioneering modular analog synthesizers along with his wide-ranging music scholarship positioned Anthony at the center of the music technology revolution. He attended the University of Southern California School of Music as a piano and composition major.

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