AES New York 2018
Applications in Audio Session Details
Wednesday, October 17, 11:30 am — 12:00 pm (1E10)
AA01 - Vacuum Tube Electronics for Solid State Engineers
Presenters:Scott Dorsey, Kludge Audio - Williamsburg, VA, USA
David Hill, Crane Song Inc. - Superior, WI, USA; Dave Hill Designs - Superior, WI, USA
David Josephson, Josephson Engineering, Inc. - Santa Cruz, CA, USA
Vacuum tube electronics is conceptually different than solid state devices, in part because the size of each stage requires minimizing the number of stages of electronics, in part because the high impedances involved almost always require the use of matching transformers. All of these changes have severe consequences for the designer in how circuits are laid out, how feedback is used, and in fundamental circuit and system design. Younger engineers who grew up with solid state theory would benefit from an understanding of the constraints on vacuum tube systems and the consequent decisions and compromises to be made in their design.
Saturday, October 20, 10:45 am — 12:15 pm (1E12)
AA02 - The Ravages of Time
Presenter:Bruce Black, MediaRooms Technology LLC - Ventura, CA, USA
It's easy to think that once we've tuned a room, all it's acoustic issues have been dealt with, and it will provide an honest and correct listening environment. Unfortunately, this is not necessarily the case.
This tutorial shows how Real Time Analyzers leave out critical information that can lead to a classic Dr. Richard Heyser situation, where the RTA measurements look good but the room sounds terrible. Unless we are aware of what an RTA DOES NOT tell us, as well as what it DOES, it's easy to get confused when the room sound does not correlate to what the RTA display says it should be. This can leave us confused and unable to make the proper corrections to our rooms.
This presentation includes actual case histories where causes and remedies are explored in detail.